JP2011156116A - Method of manufacturing tissue product applied with chemical solution - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing secondary whole rolls for tissue products capable of spraying chemical solution at low cost and easily switching between spraying and non-spraying of the chemical solution. <P>SOLUTION: The method of manufacturing secondary whole rolls for tissue products includes: a superposing step (51) for forming superposed continuous sheets S2 by superposing primary continuous sheets S11 and S12 fed from a plurality of primary whole rolls JR, along the continuation direction thereof; a chemical solution spraying step (53) for applying sprayed chemical solution to the superposed continuous sheets S2; a slitting step (55) for slitting the superposed continuous sheets S2 into sheets having a width or a multiple-fold width of a tissue product; and a winding step (56) for forming a plurality of secondary whole rolls R having the width or the multiple-fold width of the tissue product by coaxially winding each of the slit superposed continuous sheets S2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a secondary paper roll for tissue paper products used in a multi-stand type interfolder and a method for manufacturing tissue paper products.

A box of tissue paper is generally obtained by stacking multiple tissue papers by folding them with an interfolder (folding equipment) and cutting them into a predetermined length to obtain a tissue paper bundle. It is manufactured by storing in a storage box (tissue carton).
Examples of such interfolders include multi-stand type (multiple type) interfolders as disclosed in Patent Documents 1 and 2 below, and rotary interfolders as disclosed in Patent Documents 3 and 4 below. It has been known.
The following is a conventional example of a manufacturing method using a multi-stand type interfolder. That is, a primary web roll (generally also called a jumbo roll) is manufactured by making a thin paper in a papermaking facility and winding it. Then, this primary web roll is set on a ply machine, and a plurality of primary webs are produced. The primary continuous sheet fed from the roll is overlapped and wound and slit (divided into the product width of the tissue paper product or a multiple of the width of the tissue paper product in the width direction) to produce a secondary raw roll made of a plurality of plies.
After the secondary roll manufactured by the ply machine is taken out from the ply machine, the necessary number of rolls are set in the multi-stand type interfolder. Next, the secondary continuous sheet is fed out from the secondary web roll and fed to the folding mechanism, where it is stacked while being folded, and then cut into a predetermined length to form a tissue paper bundle, which is stored in a storage box. .
A manufacturing method using such a multi-stand type interfolder has a higher number of folding mechanisms (usually 80 to 100) than a manufacturing method using other folding equipment, and is therefore highly productive. Has advantages.

  By the way, in recent years, there has been an increasing demand for tissue paper products coated with chemicals such as moisturizers and fragrances (usually also referred to as “lotion chemicals”). Various manufacturing methods and equipment have been proposed. In general, tissue paper products containing such a lotion chemical are mainly manufactured by a rotary interfolder (for example, Patent Document 5 below). However, the rotary type interfolder has a drawback in that productivity is low because folding and cutting are simultaneously performed in the direction perpendicular to the processing direction.

US Patent No. 4052048 (Japanese Patent Publication No. 55-1215) JP 2006-240750 A JP 61-37668 A Japanese Patent Laid-Open No. 5-124770 Japanese Patent Application Laid-Open No. 2004-332034 Special table 2008-525103 gazette JP 2008-264564 A

Therefore, the present inventors have considered manufacturing tissue paper products to which a chemical solution has been applied by a manufacturing method using a multi-stand type interfolder that is more productive than a rotary interfolder.
However, when manufacturing by a manufacturing method using a multi-stand type interfolder, if a chemical solution application step is provided separately from the ply machine or the multi-stand type interfolder, it takes time and labor to transfer the raw material and a large equipment cost. There is a problem. Further, when the chemical solution application step is provided in the multi-stand type interfolder, it is necessary to separately provide a line for manufacturing a tissue paper product to which a chemical solution is applied and a line for manufacturing a tissue paper product to which no chemical solution is applied.

Therefore, the main problem of the present invention is that, in producing a secondary roll for tissue paper products used in a multi-stand type interfolder, a minor modification of existing equipment is sufficient without requiring a major equipment modification. In addition, while using a single multi-stand type interfolder, it is easy to switch between tissue paper products with chemicals and tissue paper products without chemicals. It is to provide a method for manufacturing a roll.
On the other hand, mixing of paper dust is suppressed, so that a chemical solution can be stably applied.

Means for solving the above problems and their effects are as follows.
[Invention of Claim 1]
A method for producing a secondary web roll for tissue paper products, wherein a plurality of secondary web rolls for tissue paper products are continuously produced from the primary web roll,
A lamination step in which a primary continuous sheet fed from a plurality of primary fabric rolls is laminated along the continuous direction to form a laminated continuous sheet;
A chemical spraying step for applying a chemical to the laminated continuous sheet in a sprayed state;
A slitting process for slitting the laminated continuous sheet so as to have a product width of tissue paper products or a multiple of the width,
A tissue paper product comprising: a winding step of winding each slit continuous sheet coaxially to form a plurality of secondary rolls having a product width of the tissue paper product or a multiple of the width of the tissue paper product. Manufacturing method for secondary raw fabric rolls.

(Function and effect)
In the present invention, a secondary raw roll for tissue paper products for continuously supplying a multi-stand type interfolder from a primary raw roll that has been made and wound is manufactured in a so-called ply machine. In addition, a chemical solution spraying step is incorporated to apply the chemical solution to the sheet.
Therefore, a minor modification of the existing ply machine is sufficient without requiring a large facility modification, and there is an advantage that a small investment facility cost is sufficient.
In addition, since the chemical spraying process is incorporated in the ply machine instead of providing the chemical spraying process in the multi-stand type interfolder, the tissue paper product to which the chemical liquid is applied and the tissue paper product to which the chemical liquid is not applied are provided. This switching is simply performed depending on whether or not a chemical solution is applied to the secondary raw roll for tissue paper products, and is excellent in productivity.

  In addition, when a chemical spraying process is provided in a multi-stand type interfolder, for example, it is conceivable to provide a large number of chemical spraying apparatuses for the laminated sheet layer, but this not only increases the equipment cost but also the installation space. In addition, it is difficult to ensure the accuracy, and it is practically impossible to accurately manage the applied amount in each device. Compared with this embodiment, the manufacturing method of the present invention provides advantages such as equipment cost and amount management.

On the other hand, in the case of a rotary type interfolder, its processing speed (sheet traveling speed) is low, so that a wide sheet (for example, 2) is used in a rotary cylinder type processing machine as described in JP-A-2008-245780. It is possible to apply a chemical in the process of supplying (about 3 m).
However, it is conceivable that the tissue paper production line using the multi-stand type interfolder is set to a high speed of, for example, 700 to 1400 m / min. In that case, it is necessary to perform the ply processing at the same speed in the ply machine in order to match the production speed. In such a high-speed ply machine, for example, when a chemical solution is applied by a method such as gravure, flexo, or roll coating, a large amount of paper dust is generated mainly due to friction between the sheet running at high speed and the coating roll. It mixes in the chemical solution and its concentration changes, resulting in variations in coating amount. On the other hand, in this invention, since chemical | medical solution is provided by spraying, it is freed from the trouble accompanying generation | occurrence | production of paper dust.

  Furthermore, when the chemical solution is applied by spraying according to the present invention, the fiber layer is not crimped between the rolls in the state of containing the chemical solution, as seen in systems such as gravure, flexo, and roll coating. Thus, a thicker or thicker tissue paper can be obtained.

[Invention of Claim 2]
The manufacturing method of the secondary raw material roll for tissue paper products of Claim 1 with which the said chemical | medical solution spraying process is performed after the said lamination | stacking process and before the said slit process.

[Invention of Claim 3]
The manufacturing method of the secondary raw material roll for tissue paper products of Claim 2 which has the smoothing process of smoothing with a calender between the said lamination process and the said chemical | medical solution spraying process.

[Invention of Claim 4]
The secondary for tissue paper products of Claim 2 which has the contact embossing process which performs the line-shaped contact embossing which prevents delamination with respect to the said lamination | stacking continuous sheet between the said chemical | medical solution spraying process and the said slit process. A method for producing a raw roll.

[Invention of Claim 5]
The manufacturing method of the secondary raw material roll for tissue paper products of Claim 1 whose provision of the said chemical | medical solution is based on a nozzle type spray system.

[Invention of Claim 6]
The manufacturing method of the secondary raw material roll for tissue paper products of Claim 1 whose provision of the said chemical | medical solution is based on a rotor dampening spray system.

[Invention of Claim 7]
A large number of the secondary web rolls obtained by the claims of any one of the above-mentioned claims are prepared, and these are arranged along the line direction in a multi-stand type interfolder and fed out from each secondary web roll. A plurality of secondary continuous sheets are transported along the continuous direction, stacked while being folded in the transport process, and then a predetermined number of laminated sheets are cut to a predetermined length to form a tissue paper bundle, and this stack is stored in a storage box A method for producing tissue paper products, wherein the tissue paper products are housed in the inside.

  A number of secondary rolls for tissue paper products manufactured so as to have a product width of tissue paper products or multiple times the width of tissue paper products in the slit process in the manufacturing method according to the present invention are set in a multi-stand type interfolder at this latter stage. The Next, the secondary continuous sheet is fed out from the secondary raw roll set in the multi-stand type interfolder, sent to the folding mechanism, stacked while being folded, and then cut into a predetermined length and the tissue paper Make a bundle and store it in a storage box.

In this invention, a chemical | medical solution is provided with the spray system with respect to the lamination | stacking continuous sheet in the manufacturing method of the secondary raw material roll for tissue paper products. For this reason, when providing a chemical | medical solution provision process separately from a ply machine and a multi-stand type | system | group interfolder, the effort of the original fabric transfer and a great installation cost do not start.
In addition, when manufacturing tissue paper products that do not apply chemicals, it is only necessary to manufacture without applying chemicals in the process of manufacturing secondary rolls for tissue paper products. .

  In the manufacturing method of the secondary raw material roll for tissue paper products which concerns on this invention, it is preferable that a chemical | medical solution spraying process is performed after a lamination process and before a slit process. If the chemical spraying process is before the laminating process, it is necessary to provide equipment for spraying the chemical liquid on each primary continuous sheet. Since the chemical solution is sprayed and applied to the divided laminated continuous sheet, the chemical solution leaks from the slit, causing roll dirt and paper breakage. When the chemical spraying process is performed between the laminating process and the slitting process, it is sufficient to prepare equipment for spraying the chemical only on the laminated continuous sheet that is not divided by the slitting process. There is little, and there is little paper break and operation is stable.

In the manufacturing method of the secondary raw material roll for tissue paper products which concerns on this invention, it is preferable to have a smoothing process of smoothing by a calendar | calender etc. By having a smoothing process, the secondary raw material roll for tissue paper products with a smooth surface can be manufactured.
In addition, it is preferable that a smoothing process is performed between a lamination process and a chemical | medical solution spray provision process. If the smoothing step is before the laminating step and there are at least two facilities for smoothing the outer surface of the outer sheet of the laminated sheet, the same effect as the one smoothing step after the laminating step is obtained. In addition, when the same smoothness is obtained with two calenders on the surface of two sheets as outer layers, the paper thickness tends to be impaired.

In the manufacturing method of the secondary raw material roll for tissue paper products which concerns on this invention, it is preferable to have a contact embossing process which performs the line-shaped contact embossing which prevents delamination with respect to a lamination | stacking continuous sheet.
This contact embossing process is preferably performed before the slitting process. If the contact embossing process is after the slitting process, contact embossing will be applied to the laminated continuous sheet with slits in the product width, and there will be two locations (two lines) at the end of the laminated sheet having a continuous product width. Since contact embossing is performed, it becomes easier to cut the paper than contact embossing at the full width.

  In the method for producing a secondary paper roll for tissue paper products according to the present invention, any known spraying method such as a nozzle spraying method or a rotor dampening spraying method can be used as the chemical spraying method.

It is the schematic which shows the manufacturing equipment and manufacturing method of a primary web roll. It is the schematic which shows an example of a multi stand type inter folder, and has shown the state seen from the front. It is the schematic which shows an example of a multi stand type inter folder, and has shown the state seen from the side. It is the schematic which shows an example of a multi stand type inter folder, and has shown the state seen from the front. It is a longitudinal cross-sectional view of the folded tissue paper. (A) It is a figure which shows a mode that the tissue paper bundle is accommodated in the storage box. (B) It is a partially broken figure which shows a mode that the tissue paper accommodated in the storage box is taken out. It is a principal part expansion perspective view of the site | part regarding a folding plate. It is a principal part expansion perspective view which shows how to fold a secondary continuous sheet (tissue paper). It is a principal part expansion perspective view which shows how to fold a secondary continuous sheet (tissue paper). It is a principal part expansion perspective view which shows how to fold a secondary continuous sheet (tissue paper). It is the schematic which shows the manufacturing equipment and manufacturing method of a secondary web roll. It is a principal part enlarged view of the periphery of the chemical | medical solution spraying means shown in FIG. It is a figure which shows a mode that the contact embossing is provided to the lamination | stacking continuous sheet by the contact embossing means. It is a schematic block diagram which shows the other example of a chemical | medical solution spraying means. It is a schematic block diagram which shows the example of another chemical | medical solution spraying means. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is a schematic diagram which shows the structure of a lamination | stacking continuous sheet (tissue paper). (A) MD direction sectional drawing before chemical | medical solution spraying, (B) Top view before chemical | medical solution osmosis | permeation process, (C) II arrow directional view. It is a schematic diagram which shows the surface uneven structure of a lamination | stacking continuous sheet (tissue paper). (A) Before chemical solution spraying, (B) After chemical solution spraying. It is a schematic diagram which shows a chemical | medical solution penetration process. It is a figure which shows the measuring method of the MMD value of tissue paper.

Next, an embodiment of the present invention will be described. In the figure, the arrow HD indicates the horizontal direction, and the arrow LD indicates the vertical direction.
[Manufacture of primary rolls]
An example of the manufacturing method of a primary fabric roll is demonstrated referring FIG.
As shown in FIG. 1, the wet paper W that has passed through the wire part is placed on the bottom felt 111 and transferred, and thereafter, sandwiched between the top felt 110 and the bottom felt 111, between the top roll 112 and the bottom roll 113. Passed and squeezed. Thereafter, the wet paper web W squeezed is attached to the surface of the Yankee dryer 115 via the touch roll 116 while being placed on the top felt 110. Then, the wet paper W is dried by the Yankee dryer 115, peeled off by the doctor blade 117, and then wound up to be a primary raw roll JR.
In this papermaking, for example, dispersants, dry paper strength enhancers, wet paper strength enhancers, softeners, release agents, adhesives, pH adjusters such as caustic soda, antifoaming agents, preservatives, slime control agents, dyes , Etc. can be added as appropriate chemicals.
In the method of manufacturing the primary raw roll, the smoothing process can be performed by the calendar means 118 after being peeled off by the doctor blade 117.

[Manufacture of secondary rolls for tissue paper products]
A plurality of secondary web rolls for tissue paper products are continuously produced from the primary web roll JR produced in the above example. For example, as shown in FIG. 11, the production facility X1 (ply machine X1) for the secondary paper roll for tissue paper products can set at least two or more primary raw material rolls JR manufactured in the above example. A primary continuous sheet (S11, S12 in the illustrated example) fed from the primary raw roll JR is laminated along the continuous direction to form a laminated continuous sheet S2 (plying step). is doing.

  A pair of chemical solution spraying means 53 for spraying a chemical solution onto the laminated continuous sheet S <b> 2 flowing from the ply means 51 is provided at the subsequent stage of the ply means 51. The slit means 55 (slit process) which consists of a plurality of cutters and slits the laminated continuous sheet S2 transferred from the chemical spray means 53 so as to have a product width of tissue paper products or a multiple of the width of the tissue paper product is arranged. ing. Then, at the subsequent stage of the slit means 55, the laminated continuous sheet S2 slit by the slit means 55 is coaxially wound to form a plurality of secondary raw rolls R having a product width of tissue paper products or a multiple of the width. Winding means 56 is provided. Here, the winding means 56 has two winding drums 56A for guiding each slit continuous sheet S2 to the secondary raw roll R, and these two winding drums 56A are secondary. The laminated continuous sheet S2 is guided in contact with the outer peripheral surface of the raw roll R.

  In the production of the secondary raw material roll for tissue paper products according to this embodiment, the processing speed (also the traveling speed of the sheet in chemical spray application) is 100 to 1100 m / min, preferably 350 to 1050 m / min. More preferably, it is 450 to 1000 m / min. If it is less than 100 m / min, the productivity is low. On the other hand, if it exceeds 1100 m / min, there is a possibility that the frequency of cutting the laminated continuous sheet S2 is increased.

[Processing with multi-stand type inter folder]
A large number of secondary rolls R for tissue paper products thus obtained are set in a multi-stand type interfolder in the line direction (for example, half the number of sets of products), and the secondary rolls are set. From R, the secondary continuous sheet is fed out and transferred along the continuous direction, and a tissue paper bundle is manufactured by stacking while folding in the transfer process, and then a predetermined number of laminated sheets are cut to a predetermined length. A tissue paper product is manufactured by forming a tissue paper bundle and storing this stack in a storage box.

Hereinafter, an example of the multi-stand type interfolder and the packaging form will be described.
2 and 3 show an example of a multi-stand type interfolder. Reference numeral 2 in the figure denotes secondary raw rolls R, R... Set on a secondary raw roll support portion (not shown) of the multi-stand type interfolder 1. The secondary raw rolls R, R... Are set side by side in a direction (the horizontal direction in FIG. 2 and the front-to-back direction in FIG. 3) perpendicular to the illustrated plane. Each secondary roll R is slit in the tissue paper product width in the manufacturing process of the above-described secondary roll for tissue paper products. Rolled up and set.

  The continuous belt-like secondary continuous sheets 3 </ b> A and 3 </ b> B unwound from the secondary raw roll R are guided by guide means such as guide rollers G <b> 1 and G <b> 1 and sent to the folding mechanism unit 20. Moreover, the folding mechanism part 20 is provided with the folding plate group 21 in which the required number of folding plates P, P ... are arranged in parallel as shown in FIG. For each folded plate P, guide rollers G2, G2 and guide round bar members G3, G3 for guiding a pair of continuous secondary continuous sheets 3A or 3B are respectively provided at appropriate positions. Further, below the folded plates P, P..., A conveyor 22 is provided that receives and conveys the laminated band 30 that is stacked while being folded.

  A folding mechanism using this type of folded plates P, P... Is a known mechanism, for example, from US Pat. As shown in FIG. 5, this type of folding mechanism folds each continuous secondary continuous sheet 3A, 3B... In the Z-shape and is adjacent to the adjacent secondary continuous sheet 3A, 3B. Stack the ends together.

  FIGS. 7 to 10 show in detail the portions of the folding mechanism 20 that are particularly related to the folded plate P. FIG. In the folding mechanism unit 20, a pair of continuous secondary continuous sheets 3A and 3B are guided for each folded plate P. At this time, the continuous secondary continuous sheets 3A and 3B are guided by the guide round bar members G3 and G3 while being shifted in position so that the side end portions do not overlap each other.

  A continuous secondary continuous sheet that is overlapped on the lower side when guided by the folded plate P is defined as a first continuous secondary continuous sheet 3A, and a continuous secondary continuous sheet that is overlapped on the upper side is a second continuous sheet. As shown in FIGS. 5 and 8, these continuous secondary sheets 3A and 3B are second continuous secondary sheets of the first continuous secondary continuous sheet 3A. The side end e1 that does not overlap the sheet 3B is folded back to the upper side of the second continuous secondary continuous sheet 3B by the side plate P1 of the folded plate P, and as shown in FIGS. The side end e2 of the continuous secondary continuous sheet 3B that does not overlap with the first continuous secondary continuous sheet 3A is folded downward so as to be drawn under the folded plate P from the slit P2 of the folded plate P. . At this time, as shown in FIGS. 5 and 10, the side end portion e3 (e1) of the continuous secondary continuous sheet 3A stacked while being folded in the upstream folded plate P is second from the slit P2 of the folded plate P. Are guided between the folded portions of the continuous secondary sheet 3B. In this way, each continuous secondary continuous sheet 3A, 3B... Is folded into a Z-shape and the side edges of adjacent continuous secondary continuous sheets 3A and 3B are crossed together. In some cases, when the top tissue paper is pulled out, the side edge of the next tissue paper is pulled out.

  As shown in FIG. 2, the laminated band 30 obtained by the multi-stand type interfolder 1 as described above is cut (cut) at a predetermined interval in the flow direction FL by the subsequent cutting means 41, and the tissue is cut. The tissue paper bundle 30a is stored in the storage box B in the subsequent equipment as shown in FIG. 6A. In the multi-stand type interfolder 1 as described above, the paper direction of the laminated strip 30 is the vertical direction (MD direction) along the flow direction FL, and the horizontal direction along the direction orthogonal to the flow direction. Direction (CD direction). For this reason, the direction of the paper of the tissue paper constituting the tissue paper bundle 30a obtained by cutting the laminated band 30 into a predetermined length is the extension of the folded portion of the tissue paper as shown in FIG. The vertical direction (MD direction) is along the existing direction, and the horizontal direction (CD direction) is along the direction orthogonal to the extending direction of the folded portion of the tissue paper.

FIG. 6B shows an example of a product in which the tissue paper bundle 30a is stored in the storage box B. A perforation M is provided on the upper surface of the storage box B, and a part of the upper surface of the storage box B is broken by the perforation M so that the upper surface of the storage box B is opened. The opening is covered with a film F having a slit at the center, and the tissue paper T can be taken out through the slit provided in the film F.
By the way, as described above, the direction of the paper of the tissue paper constituting the tissue paper bundle 30a is the horizontal direction (CD direction) along the direction orthogonal to the extending direction of the folded portion of the tissue paper. As shown in (b), when pulling out the tissue paper T from the storage box B, the pulling direction is along the lateral direction (CD direction) of the tissue paper T.

(Calendar means)
By the way, one or more calendar means 52 for calendering the laminated continuous sheet S2 can be provided in the production facility X1 for the secondary raw material roll for tissue paper products described above.
The type of calendar in the calendar means 52 is not particularly limited, but is preferably a soft calendar or a chilled calendar for the purpose of improving the smoothness of the surface and adjusting the paper thickness. The soft calendar is a calendar using a roll coated with an elastic material such as urethane rubber, and the chilled calendar is a calendar made of a metal roll.

The number of calendar means 52 can be changed as appropriate. If there is a plurality of installations, it has the advantage that it can be sufficiently smoothed even if the processing speed is high.
When two or more calendar means 52 are installed, they can be arranged side by side in the horizontal direction, the up-down direction, or the diagonal direction, and these installation directions may be combined. When arranged side by side in the horizontal direction, the holding angle becomes smaller, so the processing speed can be increased, and when arranged side by side in the vertical direction, the installation space can be reduced. Here, the holding angle means an angle while the sheet is in contact as viewed from the roll axis center (a part of a circular arc of a cross section perpendicular to the axis) (hereinafter the same).
Paper making is also performed as control factors such as calendar type, nip line pressure, and number of nips in the calendar processing conditions, and these control factors are preferably changed as appropriate depending on the quality of tissue paper to be obtained, that is, paper thickness and surface properties.
Further, the installation position of the calendar means 52 is not particularly limited. However, it is located after the ply means 51 and before the chemical spray means 53, after the chemical spray means 53 and before the contact emboss means 54. Can do.

(Contact embossing means)
The production facility X1 for the secondary paper roll for tissue paper products can be provided with contact embossing means 54 for imparting contact embossing to the laminated continuous sheet S2.

  Here, as shown in FIG. 13, in the contact embossing means 54, a receiving roll 54B, which is a metal roll or an elastic roll, and a metal, hard roller 54A having a fine convex portion 54C on the surface have a predetermined pressure. The outer peripheral surfaces are in contact with each other, and are installed so as to be rotatable. Then, with respect to the portion corresponding to the center in the width direction of the tissue paper product in the laminated continuous sheet S2, the laminated continuous sheet S2 is conveyed while sandwiching the laminated continuous sheet S2 between the convex portion 54C and the receiving roll 54B. Thus, line-shaped contact embossing CE for preventing delamination along the continuous direction of the laminated continuous sheet S2 is applied to the laminated continuous sheet S2.

  In addition, the winding means 56 mentioned above winds up the lamination | stacking continuous sheet S2 by making the surface on the side facing the roller 54A which performs this contact embossing CE into an outer peripheral side.

By providing the contact embossing CE in this manner, delamination of the laminated continuous sheet S2 formed by laminating a plurality of primary continuous sheets (S11 and S12 in the illustrated example) is prevented. In addition, it is preferable that the contact embossing CE is formed so as to be positioned on both sides in the width direction of the tissue paper product so that the end portion of the tissue paper product is hardly delaminated.
The location where the contact embossing means 54 is installed is not particularly limited, but it is a stage subsequent to the chemical solution applying means 53 and preceding the slit means 55, and a stage subsequent to the calendar means 52 and preceding the chemical solution applying means 53. But you can. That is, it suffices if it is at a position after the calendar means 52 and before the slit means 55.

  When the contact embossing means 54 is applied by the contact embossing means 54, the contact embossing CE is applied within 0.3 to 2.5 seconds, preferably within 0.3 to 1.0 seconds after the chemical solution is applied to the laminated continuous sheet S2. It is also proposed to give If the time is less than 0.3 seconds, the chemical solution is not sufficiently absorbed by the base paper, so that the chemical solution adheres to the receiving roll 54B and the roller 54A and the paper is cut off, or dirt is attached to the receiving roll 54B and the roller 54A. If it exceeds 2.5 seconds, the laminated continuous sheet S2 to which the chemical solution has been applied stretches, so that subsequent process wrinkles are less likely to occur, making it difficult to obtain a bulky tissue paper product. In addition, when the laminated continuous sheet S2 is fully stretched, there is no stretch that can cope with draw fluctuations, and the tensile strength is reduced due to moisture absorption and water absorption.

Further, in this joining process, in the present embodiment, a metal and hard roller 54A having a fine convex portion 54C on the surface is used as a roller, but a line-shaped joint that prevents delamination from the laminated continuous sheet S2. For example, instead of the roller 54A, a roller having a fine needle-like member on the surface can be used as the roller.
Furthermore, the means for joining is not limited to the above example, and the tip shape of the convex portion may be a point, square, rectangular, circular, elliptical shape, etc. A tip having a slender linear shape or a thin and slanting linear shape may be used as the roller.

  On the other hand, the arrangement of the protrusions may be equally spaced, but may not be staggered or evenly spaced. In addition to arranging the protrusions in a row and providing contact embossing continuously, It is also conceivable to arrange the parts in two or more rows. Then, a plurality of groups in which convex portions are arranged so as to provide a plurality of rows of contact embossing closely may be arranged to provide a plurality of contact embossing groups. In addition, as a joining process, you may join by other means, such as an ultrasonic wave, besides joining by applying a pressure mechanically as mentioned above.

(Medication spraying means)
In the manufacture of the secondary raw material roll for tissue paper products according to the present embodiment, it is applied to the laminated continuous sheet S2 while spraying a chemical solution.
Although it does not specifically limit as the chemical | medical solution spraying means 53, In addition to the case of a nozzle type spray system, you may use a rotor dampening spray system.

  Among these, the types of spray nozzles in the nozzle spray device include an empty conical nozzle that sprays in an annular shape, a full conical nozzle that sprays in a circular shape, a full pyramid that sprays in a square shape, a full nozzle and a fan Type nozzles, etc., so that the chemical solution is sprayed uniformly in the width direction of the sheet, the nozzle diameter, the number of nozzles, the nozzle arrangement pattern, the number of nozzles, or the spray distance, spray pressure, spray angle, and spray The concentration and viscosity of the liquid can be appropriately selected and used.

  Moreover, about the method of atomizing in a nozzle type spraying apparatus, it can select and use two types, a 1 fluid system or a 2 fluid system. Of these, the one-fluid spraying method applies pressure directly to the chemical liquid to be sprayed using compressed air and sprays mist droplets from the nozzle, or blows air into the nozzle from a fine hole opened on the side of the nozzle near the jet outlet. This is a method of sucking and spraying mist. In addition, the two-fluid spraying method is mixed with a liquid sprayed with compressed air inside the nozzle, an internal mixing type that atomizes, mixed with a liquid sprayed with compressed air outside the nozzle, an external mixing type that atomizes, and atomized Examples include a collision type system in which mist droplet particles collide with each other to further homogenize and atomize the mist droplet particles.

On the other hand, the rotor dampening coating device is a device that sends out the liquid to be sprayed onto a disk that rotates at high speed, and makes the liquid atomized by the centrifugal force of the disk, and controls the particle size of the droplets by changing the rotational speed of the disk. The amount of spray liquid (applied amount) is controlled by changing the amount of liquid fed onto the disk. Is. Rotor dampening applicator can apply a small amount of spray liquid evenly on the surface of pigment coated paper while suppressing spraying of mist droplets, and it is easy to adjust the spraying speed and the particle size of mist. There are certain advantages.
In order to spray the chemical solution uniformly on the sheet surface, the atomized particle size of the atomized chemical solution is preferably as small as possible. However, if the mist droplets become too fine, the mist droplets will be swept away by the rebound of the sprayed air or the air accompanying the sheet surface, and the mist droplets will not easily adhere to the sheet surface, especially when the traveling speed of the sheet is high. Become. For this reason, in the spray application system, the spray distance, spray pressure, spray angle, spray speed, and in the case of the two-fluid system, the mixing ratio of the chemical liquid for spraying and the compressed air, the concentration and viscosity of the chemical liquid, etc. It can be adjusted appropriately to adjust the particle size to suit the application conditions. If the influence of the accompanying air is large during spraying, installation of a suction device or baffle plate (rectifying plate) to remove the accompanying air, Further, a charged electrode (electrostatic spraying method) or the like may be added to apply high voltage to the tip of the spray nozzle to charge the mist droplet particles to improve the appropriate adhesion of the mist to the pigment coated paper.
The mist droplets floating as mist without being applied to the sheet surface can be sucked and collected and sprayed again.

  FIG. 12 shows an example of a nozzle type spray method, particularly a two-fluid type chemical spray device 53A (53B). This device 53A has a chemical liquid passage 53a at its center and an air passage 53b around it, and atomizes the chemical liquid ejected from the tip of the chemical liquid passage 53a with the air discharged from the air passage 53b. The chemical solution is sprayed in a substantially conical shape. Reference numeral 53c denotes an external protective casing that protects the nozzle from paper dust and the like, and can clean the nozzle with air that passes through the purge air passage 53d if necessary. This kind of chemical spraying device 53A (53B) can be provided at one or more intervals in the width direction of the sheet.

  As described above, the mist droplets are washed away by the rebound of the sprayed chemical liquid or the air accompanying the surface of the sheet, and particularly when the traveling speed of the sheet is high, the mist droplet is difficult to adhere to the sheet surface. Therefore, if necessary, as shown in FIG.

When the sprayed chemical liquid from the chemical liquid spraying means (spray nozzle) is surrounded by the air sprayed from the air supply path 53f formed in the casing 53e from around the chemical liquid spraying means (spray nozzle) 53, the chemical liquid is suitably applied to the sheet S2. be able to.

  FIG. 15 shows an example of a rotor dampening coating device 53X. In this case, a rotating rotor 53o is provided in a cover housing chamber 53p provided as necessary, and a chemical solution is sprayed onto the sheet S2 from an ejection port 53q of the rotating rotor 53o.

  By the way, it is preferable that the means (calendar means 52 and contact embossing means 54 in the example of FIG. 11) arranged before and after the chemical solution spraying means 53 are arranged close to each other. By doing so, when manufacturing a tissue paper product to which no chemical liquid is applied, the laminated continuous sheet S2 is directly transferred from the front stage to the rear stage of the chemical liquid spraying means 53, and the laminated continuous sheet S2 is not passed through the chemical liquid spraying means 53. Since it only has to pass through, it is possible to easily switch the presence or absence of chemical application. For example, in the manufacturing equipment X1 for the secondary paper roll for tissue paper products shown in FIG. 11, when manufacturing the tissue paper products to which no chemical solution is applied, as shown by the two-dot chain line in FIG. It is only necessary to transfer directly from the means 52 to the contact embossing means 54 and to flow the laminated continuous sheet S2 without passing through the chemical solution spraying means 53.

When imparting chemical on both surfaces of the laminated continuous sheet S2, chemical application amount of the double-sided total is a 1.5~5.0g / m ^2, is preferably a 2.0 to 4.5 g / m ^2, More preferably, it is 2.5 to 4.0 g / m ² . If it exceeds 5.0 g / m ² , the paper may be cut due to a decrease in paper strength or elongation, winding may occur when winding with a winding drum, or the quality may be too sticky. . If it is less than 1.5 g / m ² , it will not be possible to feel the quality difference from the unassigned product such as smoothness and moist feeling.
In addition, when there is a difference in the application amount to both application surfaces, since both application surfaces are in contact with each other during the time (8 hours or more) from being stored in the ply original fabric to being folded after spray application, Gradually, the amounts of both chemicals are equalized, and the difference between the two sides becomes smaller.

When applying a chemical | medical solution only to the single side | surface of lamination | stacking continuous sheet S2, the application | coating surface of a chemical | medical solution is to the surface (surface at the side of primary continuous sheet S11) located in the outer side of the secondary original fabric roll R in lamination | stacking continuous sheet S2. Grant is good. In this way, there is a difference between the front and the back of the product, but it is difficult to cause winding slip. In this case, the applied amount is 1.5 to 5.0 g / m ² , preferably 2.0 to 4.5 g / m ² , more preferably 2.5 to 4.0 g / m ^2. .

  Moreover, when providing a difference in the crepe rate of each primary continuous sheet constituting the laminated continuous sheet S2, more chemical solution is applied to the primary continuous sheet side having the higher crepe rate (primary continuous sheet S11 side in the illustrated example). Is also proposed. For example, in the example shown in FIG. 11 and FIG. 20, out of the two chemical spraying means 53, the chemical spraying means 53B that directly applies the chemical liquid to the primary continuous sheet S11 is more than the other chemical spraying means 53A. The chemical solution shall be applied. In this case, the ratio of the applied amount of the chemicals on both sides is 100: 0 to 60:40, preferably 75:25 to 60:40.

  FIG. 20A is a cross-sectional view of the laminated continuous sheet S2 laminated on the two plies before applying the chemical solution (cross-sectional view cut in parallel with the MD direction). In applying the chemical solution to both surfaces of the laminated continuous sheet S2 laminated in two plies, a difference is provided in the amount of the chemical solution on both surfaces, and in the drawing, a large amount of chemical solution is applied to the primary continuous sheet S11 side. After the chemical solution is applied, before the laminated continuous sheet S2 is fully extended, the laminated layers are integrated by the contact embossing CE, and cut into the product width by the slit means 55 (FIG. 20B). Thereafter, the laminated continuous sheet S2 is taken up by the take-up means 56 and is left to stand for infiltration of the chemical solution. The primary continuous sheets S11 and S12 constituting the laminated continuous sheet S2 to which the chemical solution is applied by the chemical solution spraying means 53 mainly extend in the MD direction. At that time, the primary continuous sheet S11 to which more chemical solution is applied has a higher elongation rate than the other primary continuous sheet S12, but the primary continuous sheets S11 and S12 are fixed to each other by the contact embossing CE. Wrinkles occur on the surface of the extended primary continuous sheet S11 (20 (C)). A difference is also provided in the crepe rate of the laminated continuous sheet S2 to be laminated, and if a base paper having a high crepe rate is used for the primary continuous sheet S11, a difference may be caused in the elongation rate between the primary continuous sheet S11 and the primary continuous sheet S12. it can.

  In the example of FIG. 1, the crepe is formed by the difference between the dryer speed and the winding speed after the base paper is dried by the Yankee dryer 115 and then peeled off from the Yankee dryer 115 by the doctor blade 117. The shape of this crepe is adjusted by sticking the paper to the Yankee dryer 115, but since there is some variation in this sticking and the fiber raw material is not evenly distributed, There is some variation in the three-dimensional crepe shape. This variation becomes more prominent as the crepe rate increases.

  Along with the variation in the crepe, there is also a variation in the elongation when the chemical solution is applied, which is formed as a three-dimensional fine wave. This wave does not become apparent during the seasoning of the original fabric because tension is applied, but it is restored and becomes apparent after processing and cutting into a product. The greater the amount of chemical applied to the sheet, the greater the crepe, the greater the change in the crepe shape, the greater the corrugation of the sheet, and the smaller the amount of chemical applied to the sheet, the smaller the crepe, the smaller the crepe shape, The undulation is small. For this reason, a bulky effect can be synergized by changing not only the applied amount but also the crepe rate.

  In addition, regarding the quality, when the primary continuous sheets S11 and S12 having different crepe rates are laminated to produce a product, the tissue paper, which is a product, has a different bulk feeling unless the chemical solution is applied (FIG. 21 ( A)). However, by applying more chemical solution to the primary continuous sheet S11 having a larger surface irregularity (high crepe rate), the primary continuous sheet S11 extends at a higher elongation rate than the primary continuous sheet S12. Since it is fixed in parallel with the MD direction (not shown), the primary continuous sheet S11 corrugates and the bulk of the laminated sheet increases. (FIG. 21B)).

  By providing a difference in the amount of chemical applied, there is a concern that the touch on both sides of the product and the feeling of use will be different, but in the state of the roll before subjecting the secondary roll R to the next step (folding etc.) Since the surfaces of the primary continuous sheets S11 and S12 having different chemical application amounts are kept opposite to each other by being left standing (chemical solution infiltration process, FIG. 22), the chemical components between the continuous sheets are transferred little by little ( The difference is gradually reduced during seasoning. In addition, the white arrow in FIG. 22 shows the osmosis | permeation direction of a chemical | medical solution component.

(Medical solution)
About the chemical | medical solution to provide, a viscosity shall be 1-700 mPa * s at 40 degreeC from a viewpoint of performing high-speed processing. More preferably, it is set to 50 to 400 mPa · s (40 ° C.). If it is less than 1 mPa · s, the chemical solution is likely to be scattered on rolls such as anilox roll, printing plate roll, and gravure roll, and conversely if it is more than 700 mPa · s, it is difficult to control the amount applied to each roll or continuous sheet. Ingredients include 70-90% polyol, 1-15% moisture, and 0.01-22% functional chemicals.
The polyol includes polyhydric alcohols such as glycerin, diglycerin, propylene glycol, 1,3-butylene glycol, polyethylene glycol, and derivatives thereof, and saccharides such as sorbitol, glucose, xylitol, maltose, maltitol, mannitol, and trehalose.
Functional agents include softeners, surfactants, inorganic and organic fine particle powders, oily components, and the like. Softeners and surfactants have the effect of imparting flexibility to the tissue and smoothing the surface, and anionic surfactants, cationic surfactants and zwitterionic surfactants are applied. Inorganic and organic fine particle powders have a smooth surface. The oil component has a function of improving lubricity, and higher alcohols such as liquid paraffin, cetanol, stearyl alcohol, and oleyl alcohol can be used.
In addition, as a functional agent, one of a hydrophilic polymer gelling agent, collagen, hydrolyzed collagen, hydrolyzed keratin, hydrolyzed silk, hyaluronic acid or a salt thereof, ceramide, etc. A moisturizing agent such as any combination can be added.
Deodorants such as flavors, emollients such as various natural extracts, vitamins, emulsifiers that stabilize compounding ingredients, antifoaming agents, antifungal agents, organic acids, etc. An agent can be appropriately blended. Furthermore, you may contain the antioxidant of vitamin C and vitamin E.
Among the above components, it is preferable to use a polyhydric alcohol such as glycerin or propylene glycol as a main component in order to stabilize the viscosity and applied amount of the chemical.
The temperature at the time of chemical solution application is preferably 30 ° C to 60 ° C, preferably 35 ° C to 55 ° C.

(Primary continuous sheet)
The raw material pulp of primary continuous sheet S11, S12 is not specifically limited, According to the use of tissue paper products, an appropriate raw material pulp can be selected and used. As raw material pulp, for example, wood pulp, non-wood pulp, synthetic pulp, waste paper pulp, and the like, more specifically, groundwood pulp (GP), stone ground pulp (SGP), refiner ground pulp (RGP), pressure type Mechanical pulp (MP), chemical mechanical pulp (CGP), semi-chemical pulp (such as ground pulp (PGW), thermomechanical pulp (TMP), chemithermomechanical pulp (CTMP), bleach chemithermomechanical pulp (BCTMP) Chemical pulp (SCP), kraft pulp (KP) such as hardwood bleached kraft pulp (LBKP), softwood bleached kraft pulp (NBKP), soda pulp (AP), sulfite pulp (SP), dissolved pulp (DP), etc. CP), nylon, rayon, polyester, polyvinyl alcohol Synthetic pulp made from (PVA) etc., deinked pulp (DIP), waste paper pulp such as waist pulp (WP), waste pulp (TP), cotton, flax, hemp, jute, manila hemp, ramie etc. One or several kinds of rag pulp, straw pulp, esparto pulp, bagasse pulp, bamboo pulp, kenaf pulp, and other auxiliary pulps such as bast pulp can be appropriately selected and used.

  In particular, the raw material pulp is preferably a blend of NBKP and LBKP. Waste paper pulp may be blended as appropriate, but in terms of texture and the like, it may be composed only of NBKP and LBKP, and the blending ratio (JIS P 8120) in that case is NBKP: LBKP = 20: 80-80: 20 is good, and NBKP: LBKP = 30: 70-60: 40 is particularly desirable.

The primary continuous sheets S11 and S12 have a basis weight according to JIS P 8124 of 10 to 25 g / m ² , preferably 12 to 20 g / m ^2, and more preferably 13 to 16 g / m ² . When the basis weight is less than 10 g / m ² , it is preferable in terms of softness, but an appropriate strength cannot be ensured. On the other hand, when the basis weight exceeds 25 g / m ² , it becomes too hard and the touch is deteriorated.
Further, the paper thickness (measured with a Peacock manufactured by Ozaki Seisakusho) is 80 to 250 μm, preferably 100 to 200 μm, more preferably 130 to 180 μm per ply.

  The primary continuous sheets S11 and S12 preferably have a crepe rate of 10 to 30%, more preferably 12 to 25%, and particularly preferably 13 to 20%. When the crepe rate is less than 10%, it becomes a tissue paper product that is easy to break during processing and has little stretch and is not stiff. On the other hand, if the crepe rate is more than 30%, it is difficult to control the tension of the sheet at the time of processing, and the paper tends to be cut off, and wrinkles occur after production, resulting in a poor-looking tissue paper product.

  The primary continuous sheets S11 and S12 have a dry tensile strength (hereinafter also referred to as dry paper strength) specified in JIS P 8113 of 2 to 200 p-200 cN / 25 mm, preferably 250 to 600 cN / 25 mm. The lateral direction is preferably 300 to 600 cN / 25 mm, and the lateral direction is 100 to 300 cN / 25 mm, preferably 130 to 270 cN / 25 mm, particularly preferably 150 to 250 cN / 25 mm. If the dry tensile strength of the base paper is too low, troubles such as paper breakage and elongation at the time of production and use are likely to occur, and if it is too high, the touch becomes stiff when used.

  These paper strengths can be adjusted by a known method. For example, a dry paper strength enhancer is internally added (added to a stage before the dryer part, for example, pulp slurry), and the freeness of pulp is reduced (for example, about 30 to 40 ml). A method of increasing (for example, 50% or more) the NBKP compounding ratio can be appropriately combined.

  As the dry paper strength agent, starch, polyacrylamide, CMC (carboxymethyl cellulose) or a salt thereof such as sodium carboxymethyl cellulose, carboxymethyl cellulose calcium, carboxymethyl cellulose zinc and the like can be used. As the wet paper strength agent, polyamide polyamine epichlorohydrin resin, urea resin, acid colloid / melamine resin, thermal crosslinkability imparting PAM and the like can be used. When the wet paper strength agent is internally added, the addition amount can be about 5 to 20 kg / t in weight ratio to the pulp slurry. In addition, when the dry paper strength agent is internally added, the addition amount can be about 0.5 to 1.0 kg / t by weight ratio to the pulp slurry.

Next, the other form of the manufacturing equipment and manufacturing method of the secondary raw material roll for tissue paper products is demonstrated.
[Production equipment and production method for secondary roll for second tissue paper product]
For example, as shown in FIG. 16, tension control means 57 for controlling the tension of the laminated continuous sheet S2 may be provided between the chemical spray means 53 and the contact embossing means 54. The tension control means 57 is formed of a cylindrical roll, and can be moved up and down in accordance with the bending state of the laminated continuous sheet S2.
In addition, when the tension control means 57 is provided as in the form shown in FIG. In this case, in the calendar means 52 arranged at the subsequent stage of the tension control means 57, when applying the chemical solution, the calendar roll 52A is separated from the receiving roll 52B by a distance equal to or greater than the paper thickness of the laminated continuous sheet S2 to form the laminated continuous sheet S2. On the other hand, it is also proposed to let the user pass through without performing the smoothing process.

[Production equipment and production method for secondary roll for third tissue paper product]
As shown in FIG. 17, the contact embossing means 54 can be installed between the calendar means 52 and the chemical solution spraying means 53. The manufacturing method of the secondary raw material roll for tissue paper products using such manufacturing equipment X3 of the secondary raw material roll for tissue paper products is as follows.
As shown in FIG. 17, in the manufacturing method of the secondary paper roll for tissue paper products which concerns on this form, the primary continuous sheet (S11, S12 in the example of illustration) which is drawn | fed out from the several primary raw material roll by the ply means 51. Are laminated along the continuous direction to form a laminated continuous sheet S2 (lamination step), and the laminated continuous sheet S2 is smoothed by a pair of calendar means 52 (smoothing step), and the smoothed lamination is performed. Contact embossing is applied to the continuous sheet S2 by the contact embossing means 54 (contact embossing process), and a chemical solution is applied to the laminated continuous sheet S2 provided with the contact embossing by the pair of chemical liquid spraying means 53 (chemical solution applying process) ), And the slitting means 55 causes the laminated continuous sheet S2 to have a product width of the tissue paper product or a multiple of the product width. Next, the laminated continuous sheet S2 slit in the slitting process is wound up coaxially to wind up the product width of the tissue paper product or a plurality of secondary raw rolls R having a multiple of the width. Formed by means 56.
In addition, when manufacturing the tissue paper product to which the chemical solution is not applied at the manufacturing facility X3 of the secondary paper roll for tissue paper product, the laminated continuous sheet S2 is removed from the contact embossing means 54 as shown by a two-dot chain line in FIG. It is only necessary to directly transfer to the slit means 55 and flow the laminated continuous sheet S2 without passing through the chemical spray means 53.

[Fourth Raw Material Roll Production Equipment and Method for Tissue Paper Products]
As shown in FIG. 18, in the chemical application step 53, the contact embossing means 54 is installed between the ply means 51 and the calendar means 52, and the chemical spraying means 53 and the contact embossing means 54 are arranged with the calendar means 52 as one stage. It can also be installed in between. The manufacturing method of the secondary raw material roll for tissue paper products using such manufacturing equipment X4 of the secondary raw material roll for tissue paper products is as follows.
As shown in FIG. 18, in the manufacturing method of the secondary paper roll for tissue paper products which concerns on this form, the primary continuous sheet (S11, S12 in the example of illustration) which is drawn | fed out from several primary raw material rolls by the ply means 51. Are laminated in the continuous direction to form a laminated continuous sheet S2 (laminating step), and a chemical solution is applied by a pair of chemical spraying means 53 arranged in parallel in the vertical direction with respect to the laminated continuous sheet S2 (chemical solution applying step) ), Smoothing process is performed by a pair of calendar means 52 (smoothing process), contact embossing is applied to the smoothed laminated continuous sheet S2 by the contact embossing means 54 (contact embossing process), and the slit means 55 The laminated continuous sheet S2 is slit so as to have a product width of tissue paper products or a multiple of the width (slit process), and then A laminated continuous sheet S2, which is slit in slit step is wound coaxially a plurality of secondary master roll R of product width or a multiple width of tissue paper products are formed by the winding means 56.
In addition, when manufacturing the tissue paper product to which the chemical solution is not applied at the manufacturing facility X4 of the secondary paper roll for tissue paper product, the laminated continuous sheet S2 is contacted from the calendar means 52 as shown by a two-dot chain line in FIG. It is only necessary to transfer to the embossing means 54 and flow the laminated continuous sheet S2 without passing through the chemical spray means 53.

[Fifth tissue paper product secondary roll production equipment and production method]
As shown in FIG. 19, a pair of calendar means 52 can be arranged along the vertical direction, and a pair of chemical spraying means 53 can be arranged along the vertical direction.
The manufacturing method of the secondary raw material roll for tissue paper products using such manufacturing equipment X5 of the secondary raw material roll for tissue paper products is as follows.
As shown in FIG. 19, in the manufacturing method of the secondary raw material roll for tissue paper products which concerns on this form, the primary continuous sheet (S11, S12 in the example of illustration) which is drawn | fed out from a several primary raw material roll by the ply means 51. Is laminated along the continuous direction to form a laminated continuous sheet S2 (lamination step), and the laminated continuous sheet S2 is smoothed by a pair of calendar means 52 (smoothing step), and the laminated continuous sheet S2 Then, a chemical solution is applied by a pair of chemical spraying means 53 (chemical solution applying process), contact embossing is applied by the contact embossing means 54 to the laminated continuous sheet S2 (contact embossing process), and the laminated continuous sheet S2 is applied by the slit means 55. Slit to make the product width of tissue paper product or multiple times the width (slit process), then slit work In a plurality of secondary master roll R of the slit has been product width or a multiple width of wound to tissue paper products layered continuous sheet S2 coaxial, formed by winding means 56.
In addition, when manufacturing the tissue paper product to which no chemical solution is applied at the manufacturing facility X5 for the secondary paper roll for tissue paper product, the laminated continuous sheet S2 is contacted from the calendar means 52 as shown by a two-dot chain line in FIG. It is only necessary to transfer directly to the embossing means 54 and flow the laminated continuous sheet S2 without passing through the chemical spraying means 53.

  Next, a tissue paper product (Example) is manufactured with the above-mentioned multi-stand type interfolder using the secondary material roll manufactured by the manufacturing method of the secondary material roll X1 for tissue paper products shown in FIG. The comparison was made with a reference example and a comparative example using the flexo transfer method.

<Base paper>
In Examples 1-6, the pulp which comprises a base paper was NBKP30% and LBKP70%. Further, a crepe rate of 19% was used. About Examples 1-6, the chemical | medical solution of the same composition as the comparative example 2 was prepared so that a viscosity might be set to 110 mPa * s (40 degreeC).
Examples 1-3 are based on the spray form by the rotor dampening system shown in FIG. 15, and Examples 4-6 are based on the spray form by the nozzle system shown in FIG.
The comparative examples in Table 2 are all commercially available products, Comparative Example 1 is a non-humidifying general-purpose tissue paper marketed by the applicant, and Comparative Examples 2 to 2 are moisturizing lotion type tissue papers. Comparative Example 2 is a lotion type tissue paper marketed by the applicant, but since Comparative Examples 3 and 4 are commercial products of other companies, they contain unknown contents.

Each parameter shown in Table 1 and Table 2 is as follows.
Measured according to JIS P 8124 (1998). In the case of a two-ply tissue product, the average weight of a 2-ply sheet is listed.
Paper thickness: Measured under the condition of JIS P 8111 (1998) using a dial thickness gauge (thickness measuring instrument) “PEACOCK G type” (manufactured by Ozaki Seisakusho) (JIS P 8118 (1998)) According to the above).
Product density: The product density is the paper (2 ply) of tissue paper by “PEACOCK G type”, which is a doubled value (C) of the tissue paper product tsubo conditioned under JIS P 8111 conditions. The value is divided by the thickness (D), and the unit is expressed in g / cm ³ and three decimal places.
Dry tensile strength: Measured according to the tensile test method of JIS P 8113 (1998).
Wet tensile strength: Measured according to JIS P 8135 (1998).
Elongation rate: Measured using Minebea Co., Ltd. “Universal Tensile and Compression Tester TG-200N”.
Softness: Measured based on the handle ohm method according to JIS L1096 E method. However, the test piece was 100 mm × 100 mm in size, and the clearance was 5 mm. The measurement was performed 5 times each in the vertical direction and the horizontal direction with 1 ply, and the average value of all 10 times was defined as one decimal point and expressed in units of cN / 100 mm.
Coefficient of static friction: Measured by the following method according to JIS P 8147 (1998). Stick the tissue paper peeled on one ply to the acrylic plate so that the front side of the paper is on the outside. Wrap tissue paper around a 100 g weight with 2 plies and place it on the tissue on the acrylic plate. Tilt the acrylic plate and measure the angle at which the weight slides down. The angle is measured 8 times, the average angle is calculated, and the tangent value is taken as the static friction coefficient.
MMD is an average deviation MMD of the static friction coefficient. MMD is one of the indices of smoothness. The smaller the numerical value, the smoother, and the larger the numerical value, the less smooth. As a method for measuring the MMD value, as shown in FIG. 23A, a tension of 20 g / cm is applied to the contact surface of the friction element 212 in a predetermined direction (downward and rightward in FIG. 23A). While being brought into contact with the surface of the tissue paper 211, which is the measured sample, at a contact pressure of 25 g, it is moved 2 cm at a speed of 0.1 cm / s in the same direction as the direction in which the tension is applied. The friction coefficient at this time was measured using a friction feeling tester KES-SE (manufactured by Kato Tech Co., Ltd.), and the value obtained by dividing the friction coefficient by the friction distance (movement distance = 2 cm) was defined as the MMD value. The friction element 212 includes 20 piano wires P having a diameter of 0.5 mm adjacent to each other, and has a contact surface formed so that the length and the width are both 10 mm. The contact surface is formed with a unit bulging portion whose tip is formed of 20 piano wires P (curvature radius 0.25 mm). FIG. 23 (a) schematically shows the friction element 212, and FIG. 23 (b) shows an enlarged view of a portion surrounded by a dashed line in FIG. 23 (a).
Moisture content: Measured according to JIS P 8111 (1998).
Chemical solution content: The chemical solution application amount indicates the content of the chemical component in a dry state (absolutely dry) included in the unit area of tissue paper in the standard state of JIS P 8111. The content of components other than moisture in the chemical solution shall be indicated. The unit area of the tissue paper is an area of the plyed sheet viewed from a viewpoint perpendicular to the plane, and does not mean the total area of each plyed sheet and its front and back surfaces.
Chemical solution content ratio: Chemical solution application rate means that the tissue paper product with a predetermined mass conditioned under JIS P 8111 conditions is the denominator (A) (g), and the chemical solution contained in the tissue paper product with the predetermined mass The ratio of (B) divided by (A) is expressed as (%), with the mass (B) (g) excluding the moisture of (b) as a molecule. (Chemical solution content%) = (B) ÷ (A) × 100 (%)
Sensory evaluation: For Examples 1 to 6, Reference Examples 1 and 3, and Comparative Examples 1 and 2, targeting 87 consumers, softness, smoothness, thickness, moistness based on the following criteria Evaluation was performed. Moreover, about the comparative examples 3 and 4, sensory evaluation was performed for 12 different persons with different dates.
The evaluation criteria are “3” for all the results of the non-humidifying general-purpose tissue paper (Comparative Example 1) to which no chemical solution is applied, and “5”, “ “4” for those who felt “excellent”, “3” for those who felt “equivalent to the standard”, “2” for those who felt “inferior”, “notably inferior” The thing was set to “1”. In addition, the tissue-coated tissue paper is also evaluated for the presence or absence of a sticky feeling, and the evaluation criteria are “○” for “less sticky” and “×” for “obviously sticky”. did.

As can be seen from the results in Table 1 and Table 2, the secondary roll roll manufactured by the method for manufacturing a secondary roll for tissue paper products according to the present invention is used to manufacture the multi-stand type interfolder. In addition, the chemical-containing tissue paper product has a high ratio of the paper thickness (2P: 2 ply) to the rice tsubo, and the sensory evaluation is particularly high in “thickness”.
Moreover, although not described in the table, in any of Examples 1 to 5, compared with the flexo method of Reference Examples 1 to 3 and the gravure transfer method of Comparative Example 2 at the manufacturing site, the paper It was found that there was very little generation of powder and stable production was possible.

As is apparent from the above description, the present specification and drawings also disclose the following invention.
[Invention A]
An apparatus for producing a secondary web roll for tissue paper products that continuously produces a plurality of secondary web rolls for tissue paper products from a primary web roll,
Laminating means for laminating a primary continuous sheet fed from a plurality of primary raw rolls along the continuous direction to form a laminated continuous sheet;
A chemical spraying means for applying a chemical in a sprayed state to the laminated continuous sheet;
Slitting means for slitting the laminated continuous sheet so as to be a product width of tissue paper products or a multiple of the width,
Tissue paper product comprising winding means for winding each slit continuous sheet coaxially to form a product width of the tissue paper product or a plurality of secondary raw rolls of multiple widths thereof. Secondary roll roll manufacturing equipment.

[Invention B]
The manufacturing apparatus of the secondary raw material roll for tissue paper products of the invention A in which the said chemical | medical solution spraying means is performed after the said lamination | stacking means and before the said slit means.

[Invention C]
The manufacturing apparatus of the secondary raw material roll for tissue paper products of the invention B which has a smoothing process of smoothing with a calender between the said lamination | stacking means and the said chemical | medical solution spraying means.

[Invention D]
The secondary raw material for tissue paper products according to the invention B, further comprising contact embossing means for applying line-shaped contact embossing for preventing delamination on the laminated continuous sheet between the chemical spraying means and the slit means. Anti-roll manufacturing equipment.

[Invention E]
The apparatus for producing a secondary paper roll for tissue paper products according to Invention A, wherein the chemical solution is applied by a nozzle spray method.

[Invention F]
The manufacturing apparatus of the secondary raw material roll for tissue paper products of Claim 1 whose provision of the said chemical | medical solution is based on a rotor dampening spray system.

[Invention G]
A large number of the secondary web rolls obtained by the invention of any one of the above-mentioned inventions are prepared, arranged in the line direction in a multi-stand type interfolder, and a plurality of secondary web rolls fed out from each secondary web roll The secondary continuous sheet is transported along the continuous direction and stacked while being folded in the transport process. After that, a predetermined number of laminated sheets are cut to a predetermined length to form a tissue paper bundle, and this stack is stored in a storage box. An apparatus for manufacturing tissue paper products, characterized in that:

  The present invention can be applied to the production of a secondary roll for tissue paper products used in a multi-stand type interfolder.

51 ... Ply process (lamination means)
52 ... Calendar means (smoothing process)
53 ... Chemical solution spraying means (chemical solution applying step)
54 ... Contact embossing means (contact embossing process)
55 ... Slit means (slit process)
56 ... Winding means (winding process)
S11, S12 ... primary continuous sheet S2 ... laminated continuous sheet JR ... primary raw roll R ... secondary raw roll

  The present invention relates to a method for manufacturing a secondary paper roll for tissue paper products used in a multi-stand type interfolder and a method for manufacturing tissue paper products.

A box of tissue paper is generally obtained by stacking multiple tissue papers by folding them with an interfolder (folding equipment) and cutting them into a predetermined length to obtain a tissue paper bundle. It is manufactured by storing in a storage box (tissue carton).
Examples of such interfolders include multi-stand type (multiple type) interfolders as disclosed in Patent Documents 1 and 2 below, and rotary interfolders as disclosed in Patent Documents 3 and 4 below. It has been known.
The following is a conventional example of a manufacturing method using a multi-stand type interfolder. That is, a primary web roll (generally also called a jumbo roll) is manufactured by making a thin paper in a papermaking facility and winding it. Then, this primary web roll is set on a ply machine, and a plurality of primary webs are produced. The primary continuous sheet fed from the roll is overlapped and wound and slit (divided into the product width of the tissue paper product or a multiple of the width of the tissue paper product in the width direction) to produce a secondary raw roll made of a plurality of plies.
After the secondary roll manufactured by the ply machine is taken out from the ply machine, the necessary number of rolls are set in the multi-stand type interfolder. Next, the secondary continuous sheet is fed out from the secondary web roll and fed to the folding mechanism, where it is stacked while being folded, and then cut into a predetermined length to form a tissue paper bundle, which is stored in a storage box. .
A manufacturing method using such a multi-stand type interfolder has a higher number of folding mechanisms (usually 80 to 100) than a manufacturing method using other folding equipment, and is therefore highly productive. Has advantages.

In recent years, the manufacturing method as demand but coated moisturizing agents which chemical to tissue paper products (also commonly referred to as "lotion chemical") is disclosed is expanding, for example, in Patent Document 5-7 Various facilities have been proposed. In general, tissue paper products containing such a lotion chemical are mainly manufactured by a rotary interfolder (for example, Patent Document 5 below). However, the rotary type interfolder has a drawback in that productivity is low because folding and cutting are simultaneously performed in the direction perpendicular to the processing direction.

US Patent No. 4052048 (Japanese Patent Publication No. 55-1215) JP 2006-240750 A JP 61-37668 A Japanese Patent Laid-Open No. 5-124770 Japanese Patent Application Laid-Open No. 2004-332034 Special table 2008-525103 gazette JP 2008-264564 A

Therefore, the present inventors have considered manufacturing tissue paper products to which a chemical solution has been applied by a manufacturing method using a multi-stand type interfolder that is more productive than a rotary interfolder.
However, when manufacturing by a manufacturing method using a multi-stand type interfolder, if a chemical solution application step is provided separately from the ply machine or the multi-stand type interfolder, it takes time and labor to transfer the raw material and a large equipment cost. There is a problem. Further, when the chemical solution application step is provided in the multi-stand type interfolder, it is necessary to separately provide a line for manufacturing a tissue paper product to which a chemical solution is applied and a line for manufacturing a tissue paper product to which no chemical solution is applied.

Therefore, the main problem of the present invention is that, in producing a secondary roll for tissue paper products used in a multi-stand type interfolder, a minor modification of existing equipment is sufficient without requiring a major equipment modification. In addition, while using a single multi-stand type interfolder, it is easy to switch between tissue paper products with chemicals and tissue paper products without chemicals. It is to provide a method for manufacturing a roll.
On the other hand, mixing of paper dust is suppressed, so that a chemical solution can be stably applied.

Means for solving the above problems and their effects are as follows.
[Invention of Claim 1]
A method for producing a secondary web roll for tissue paper products, wherein a plurality of secondary web rolls for tissue paper products are continuously produced from the primary web roll,
A lamination step in which a primary continuous sheet fed from a plurality of primary fabric rolls is laminated along the continuous direction to form a laminated continuous sheet;
A chemical spraying step for applying a chemical to the laminated continuous sheet in a sprayed state;
A slitting process for slitting the laminated continuous sheet so as to have a product width of tissue paper products or a multiple of the width,
A tissue paper product comprising: a winding step of winding each slit continuous sheet coaxially to form a plurality of secondary rolls having a product width of the tissue paper product or a multiple of the width of the tissue paper product. Manufacturing method for secondary raw fabric rolls.

(Function and effect)
In the present invention, a secondary raw roll for tissue paper products for continuously supplying a multi-stand type interfolder from a primary raw roll that has been made and wound is manufactured in a so-called ply machine. In addition, a chemical solution spraying step is incorporated to apply the chemical solution to the sheet.
Therefore, a minor modification of the existing ply machine is sufficient without requiring a large facility modification, and there is an advantage that a small investment facility cost is sufficient.
In addition, since the chemical spraying process is incorporated in the ply machine instead of providing the chemical spraying process in the multi-stand type interfolder, the tissue paper product to which the chemical liquid is applied and the tissue paper product to which the chemical liquid is not applied are provided. This switching is simply performed depending on whether or not a chemical solution is applied to the secondary raw roll for tissue paper products, and is excellent in productivity.

  In addition, when a chemical spraying process is provided in a multi-stand type interfolder, for example, it is conceivable to provide a large number of chemical spraying apparatuses for the laminated sheet layer, but this not only increases the equipment cost but also the installation space. In addition, it is difficult to ensure the accuracy, and it is practically impossible to accurately manage the applied amount in each device. Compared with this embodiment, the manufacturing method of the present invention provides advantages such as equipment cost and amount management.

On the other hand, in the case of a rotary type interfolder, its processing speed (sheet traveling speed) is low, so that a wide sheet (for example, 2) is used in a rotary cylinder type processing machine as described in JP-A-2008-245780. It is possible to apply a chemical in the process of supplying (about 3 m).
However, it is conceivable that the tissue paper production line using the multi-stand type interfolder is set to a high speed of, for example, 700 to 1400 m / min. In that case, it is necessary to perform the ply processing at the same speed in the ply machine in order to match the production speed. In such a high-speed ply machine, for example, when a chemical solution is applied by a method such as gravure, flexo, or roll coating, a large amount of paper dust is generated mainly due to friction between the sheet running at high speed and the coating roll. It mixes in the chemical solution and its concentration changes, resulting in variations in coating amount. On the other hand, in this invention, since chemical | medical solution is provided by spraying, it is freed from the trouble accompanying generation | occurrence | production of paper dust.

  Furthermore, when the chemical solution is applied by spraying according to the present invention, the fiber layer is not crimped between the rolls in the state of containing the chemical solution, as seen in systems such as gravure, flexo, and roll coating. Thus, a thicker or thicker tissue paper can be obtained.

[Invention of Claim 2]
The manufacturing method of the secondary raw material roll for tissue paper products of Claim 1 with which the said chemical | medical solution spraying process is performed after the said lamination | stacking process and before the said slit process.

[Invention of Claim 3]
The manufacturing method of the secondary raw material roll for tissue paper products of Claim 2 which has the smoothing process of smoothing with a calender between the said lamination process and the said chemical | medical solution spraying process.

[Invention of Claim 4]
The secondary for tissue paper products of Claim 2 which has the contact embossing process which performs the line-shaped contact embossing which prevents delamination with respect to the said lamination | stacking continuous sheet between the said chemical | medical solution spraying process and the said slit process. A method for producing a raw roll.

[Invention of Claim 5]
The manufacturing method of the secondary raw material roll for tissue paper products of Claim 1 whose provision of the said chemical | medical solution is based on a nozzle type spray system.

[Invention of Claim 6]
The manufacturing method of the secondary raw material roll for tissue paper products of Claim 1 whose provision of the said chemical | medical solution is based on a rotor dampening spray system.

[Invention of Claim 7]
A large number of the secondary web rolls obtained by the claims of any one of the above-mentioned claims are prepared, and these are arranged along the line direction in a multi-stand type interfolder and fed out from each secondary web roll. A plurality of secondary continuous sheets are transported along the continuous direction, stacked while being folded in the transport process, and then a predetermined number of laminated sheets are cut to a predetermined length to form a tissue paper bundle, and this stack is stored in a storage box A method for producing tissue paper products, wherein the tissue paper products are housed in the inside.

  A number of secondary rolls for tissue paper products manufactured so as to have a product width of tissue paper products or multiple times the width of tissue paper products in the slit process in the manufacturing method according to the present invention are set in a multi-stand type interfolder at this latter stage. The Next, the secondary continuous sheet is fed out from the secondary raw roll set in the multi-stand type interfolder, sent to the folding mechanism, stacked while being folded, and then cut into a predetermined length and the tissue paper Make a bundle and store it in a storage box.

In this invention, a chemical | medical solution is provided with the spray system with respect to the lamination | stacking continuous sheet in the manufacturing method of the secondary raw material roll for tissue paper products. For this reason, when providing a chemical | medical solution provision process separately from a ply machine and a multi-stand type | system | group interfolder, the effort of the original fabric transfer and a great installation cost do not start.
In addition, when manufacturing tissue paper products that do not apply chemicals, it is only necessary to manufacture without applying chemicals in the process of manufacturing secondary rolls for tissue paper products. .

  In the manufacturing method of the secondary raw material roll for tissue paper products which concerns on this invention, it is preferable that a chemical | medical solution spraying process is performed after a lamination process and before a slit process. If the chemical spraying process is before the laminating process, it is necessary to provide equipment for spraying the chemical liquid on each primary continuous sheet. Since the chemical solution is sprayed and applied to the divided laminated continuous sheet, the chemical solution leaks from the slit, causing roll dirt and paper breakage. When the chemical spraying process is performed between the laminating process and the slitting process, it is sufficient to prepare equipment for spraying the chemical only on the laminated continuous sheet that is not divided by the slitting process. There is little, and there is little paper break and operation is stable.

In the manufacturing method of the secondary raw material roll for tissue paper products which concerns on this invention, it is preferable to have a smoothing process of smoothing by a calendar | calender etc. By having a smoothing process, the secondary raw material roll for tissue paper products with a smooth surface can be manufactured.
In addition, it is preferable that a smoothing process is performed between a lamination process and a chemical | medical solution spray provision process. If the smoothing step is before the laminating step and there are at least two facilities for smoothing the outer surface of the outer sheet of the laminated sheet, the same effect as the one smoothing step after the laminating step is obtained. In addition, when the same smoothness is obtained with two calenders on the surface of two sheets as outer layers, the paper thickness tends to be impaired.

In the manufacturing method of the secondary raw material roll for tissue paper products which concerns on this invention, it is preferable to have a contact embossing process which performs the line-shaped contact embossing which prevents delamination with respect to a lamination | stacking continuous sheet.
This contact embossing process is preferably performed before the slitting process. If the contact embossing process is after the slitting process, contact embossing will be applied to the laminated continuous sheet with slits in the product width, and there will be two locations (two lines) at the end of the laminated sheet having a continuous product width. Since contact embossing is performed, it becomes easier to cut the paper than contact embossing at the full width.

  In the method for producing a secondary paper roll for tissue paper products according to the present invention, any known spraying method such as a nozzle spraying method or a rotor dampening spraying method can be used as the chemical spraying method.

It is the schematic which shows the manufacturing equipment and manufacturing method of a primary web roll. It is the schematic which shows an example of a multi stand type inter folder, and has shown the state seen from the front. It is the schematic which shows an example of a multi stand type inter folder, and has shown the state seen from the side. It is the schematic which shows an example of a multi stand type inter folder, and has shown the state seen from the front. It is a longitudinal cross-sectional view of the folded tissue paper. (A) It is a figure which shows a mode that the tissue paper bundle is accommodated in the storage box. (B) It is a partially broken figure which shows a mode that the tissue paper accommodated in the storage box is taken out. It is a principal part expansion perspective view of the site | part regarding a folding plate. It is a principal part expansion perspective view which shows how to fold a secondary continuous sheet (tissue paper). It is a principal part expansion perspective view which shows how to fold a secondary continuous sheet (tissue paper). It is a principal part expansion perspective view which shows how to fold a secondary continuous sheet (tissue paper). It is the schematic which shows the manufacturing equipment and manufacturing method of a secondary web roll. It is a principal part enlarged view of the periphery of the chemical | medical solution spraying means shown in FIG. It is a figure which shows a mode that the contact embossing is provided to the lamination | stacking continuous sheet by the contact embossing means. It is a schematic block diagram which shows the other example of a chemical | medical solution spraying means. It is a schematic block diagram which shows the example of another chemical | medical solution spraying means. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is a schematic diagram which shows the structure of a lamination | stacking continuous sheet (tissue paper). (A) MD direction sectional drawing before chemical | medical solution spraying, (B) Top view before chemical | medical solution osmosis | permeation process, (C) II arrow directional view. It is a schematic diagram which shows the surface uneven structure of a lamination | stacking continuous sheet (tissue paper). (A) Before chemical solution spraying, (B) After chemical solution spraying. It is a schematic diagram which shows a chemical | medical solution penetration process. It is a figure which shows the measuring method of the MMD value of tissue paper.

Next, an embodiment of the present invention will be described. In the figure, the arrow HD indicates the horizontal direction, and the arrow LD indicates the vertical direction.
[Manufacture of primary rolls]
An example of the manufacturing method of a primary fabric roll is demonstrated referring FIG.
As shown in FIG. 1, the wet paper W that has passed through the wire part is placed on the bottom felt 111 and transferred, and thereafter, sandwiched between the top felt 110 and the bottom felt 111, between the top roll 112 and the bottom roll 113. Passed and squeezed. Thereafter, the wet paper web W squeezed is attached to the surface of the Yankee dryer 115 via the touch roll 116 while being placed on the top felt 110. Then, the wet paper W is dried by the Yankee dryer 115, peeled off by the doctor blade 117, and then wound up to be a primary raw roll JR.
In this papermaking, for example, dispersants, dry paper strength enhancers, wet paper strength enhancers, softeners, release agents, adhesives, pH adjusters such as caustic soda, antifoaming agents, preservatives, slime control agents, dyes , Etc. can be added as appropriate chemicals.
In the method of manufacturing the primary raw roll, the smoothing process can be performed by the calendar means 118 after being peeled off by the doctor blade 117.

[Manufacture of secondary rolls for tissue paper products]
A plurality of secondary web rolls for tissue paper products are continuously produced from the primary web roll JR produced in the above example. For example, as shown in FIG. 11, the production facility X1 (ply machine X1) for the secondary paper roll for tissue paper products can set at least two or more primary raw material rolls JR manufactured in the above example. A primary continuous sheet (S11, S12 in the illustrated example) fed from the primary raw roll JR is laminated along the continuous direction to form a laminated continuous sheet S2 (plying step). is doing.

  A pair of chemical solution spraying means 53 for spraying a chemical solution onto the laminated continuous sheet S <b> 2 flowing from the ply means 51 is provided at the subsequent stage of the ply means 51. The slit means 55 (slit process) which consists of a plurality of cutters and slits the laminated continuous sheet S2 transferred from the chemical spray means 53 so as to have a product width of tissue paper products or a multiple of the width of the tissue paper product is arranged. ing. Then, at the subsequent stage of the slit means 55, the laminated continuous sheet S2 slit by the slit means 55 is coaxially wound to form a plurality of secondary raw rolls R having a product width of tissue paper products or a multiple of the width. Winding means 56 is provided. Here, the winding means 56 has two winding drums 56A for guiding each slit continuous sheet S2 to the secondary raw roll R, and these two winding drums 56A are secondary. The laminated continuous sheet S2 is guided in contact with the outer peripheral surface of the raw roll R.

  In the production of the secondary raw material roll for tissue paper products according to this embodiment, the processing speed (also the traveling speed of the sheet in chemical spray application) is 100 to 1100 m / min, preferably 350 to 1050 m / min. More preferably, it is 450 to 1000 m / min. If it is less than 100 m / min, the productivity is low. On the other hand, if it exceeds 1100 m / min, there is a possibility that the frequency of cutting the laminated continuous sheet S2 is increased.

[Processing with multi-stand type inter folder]
A large number of secondary rolls R for tissue paper products thus obtained are set in a multi-stand type interfolder in the line direction (for example, half the number of sets of products), and the secondary rolls are set. From R, the secondary continuous sheet is fed out and transferred along the continuous direction, and a tissue paper bundle is manufactured by stacking while folding in the transfer process, and then a predetermined number of laminated sheets are cut to a predetermined length. A tissue paper product is manufactured by forming a tissue paper bundle and storing this stack in a storage box.

Hereinafter, an example of the multi-stand type interfolder and the packaging form will be described.
2 and 3 show an example of a multi-stand type interfolder. Reference numeral 2 in the figure denotes secondary raw rolls R, R... Set on a secondary raw roll support portion (not shown) of the multi-stand type interfolder 1. The secondary raw rolls R, R... Are set side by side in a direction (the horizontal direction in FIG. 2 and the front-to-back direction in FIG. 3) perpendicular to the illustrated plane. Each secondary roll R is slit in the tissue paper product width in the manufacturing process of the above-described secondary roll for tissue paper products. Rolled up and set.

  The continuous belt-like secondary continuous sheets 3 </ b> A and 3 </ b> B unwound from the secondary raw roll R are guided by guide means such as guide rollers G <b> 1 and G <b> 1 and sent to the folding mechanism unit 20. Moreover, the folding mechanism part 20 is provided with the folding plate group 21 in which the required number of folding plates P, P ... are arranged in parallel as shown in FIG. For each folded plate P, guide rollers G2, G2 and guide round bar members G3, G3 for guiding a pair of continuous secondary continuous sheets 3A or 3B are respectively provided at appropriate positions. Further, below the folded plates P, P..., A conveyor 22 is provided that receives and conveys the laminated band 30 that is stacked while being folded.

  A folding mechanism using this type of folded plates P, P... Is a known mechanism, for example, from US Pat. As shown in FIG. 5, this type of folding mechanism folds each continuous secondary continuous sheet 3A, 3B... In the Z-shape and is adjacent to the adjacent secondary continuous sheet 3A, 3B. Stack the ends together.

  FIGS. 7 to 10 show in detail the portions of the folding mechanism 20 that are particularly related to the folded plate P. FIG. In the folding mechanism unit 20, a pair of continuous secondary continuous sheets 3A and 3B are guided for each folded plate P. At this time, the continuous secondary continuous sheets 3A and 3B are guided by the guide round bar members G3 and G3 while being shifted in position so that the side end portions do not overlap each other.

  A continuous secondary continuous sheet that is overlapped on the lower side when guided by the folded plate P is defined as a first continuous secondary continuous sheet 3A, and a continuous secondary continuous sheet that is overlapped on the upper side is a second continuous sheet. As shown in FIGS. 5 and 8, these continuous secondary sheets 3A and 3B are second continuous secondary sheets of the first continuous secondary continuous sheet 3A. The side end e1 that does not overlap the sheet 3B is folded back to the upper side of the second continuous secondary continuous sheet 3B by the side plate P1 of the folded plate P, and as shown in FIGS. The side end e2 of the continuous secondary continuous sheet 3B that does not overlap with the first continuous secondary continuous sheet 3A is folded downward so as to be drawn under the folded plate P from the slit P2 of the folded plate P. . At this time, as shown in FIGS. 5 and 10, the side end portion e3 (e1) of the continuous secondary continuous sheet 3A stacked while being folded in the upstream folded plate P is second from the slit P2 of the folded plate P. Are guided between the folded portions of the continuous secondary sheet 3B. In this way, each continuous secondary continuous sheet 3A, 3B... Is folded into a Z-shape and the side edges of adjacent continuous secondary continuous sheets 3A and 3B are crossed together. In some cases, when the top tissue paper is pulled out, the side edge of the next tissue paper is pulled out.

  As shown in FIG. 2, the laminated band 30 obtained by the multi-stand type interfolder 1 as described above is cut (cut) at a predetermined interval in the flow direction FL by the subsequent cutting means 41, and the tissue is cut. The tissue paper bundle 30a is stored in the storage box B in the subsequent equipment as shown in FIG. 6A. In the multi-stand type interfolder 1 as described above, the paper direction of the laminated strip 30 is the vertical direction (MD direction) along the flow direction FL, and the horizontal direction along the direction orthogonal to the flow direction. Direction (CD direction). For this reason, the direction of the paper of the tissue paper constituting the tissue paper bundle 30a obtained by cutting the laminated band 30 into a predetermined length is the extension of the folded portion of the tissue paper as shown in FIG. The vertical direction (MD direction) is along the existing direction, and the horizontal direction (CD direction) is along the direction orthogonal to the extending direction of the folded portion of the tissue paper.

FIG. 6B shows an example of a product in which the tissue paper bundle 30a is stored in the storage box B. A perforation M is provided on the upper surface of the storage box B, and a part of the upper surface of the storage box B is broken by the perforation M so that the upper surface of the storage box B is opened. The opening is covered with a film F having a slit at the center, and the tissue paper T can be taken out through the slit provided in the film F.
By the way, as described above, the direction of the paper of the tissue paper constituting the tissue paper bundle 30a is the horizontal direction (CD direction) along the direction orthogonal to the extending direction of the folded portion of the tissue paper. As shown in (b), when pulling out the tissue paper T from the storage box B, the pulling direction is along the lateral direction (CD direction) of the tissue paper T.

(Calendar means)
By the way, one or more calendar means 52 for calendering the laminated continuous sheet S2 can be provided in the production facility X1 for the secondary raw material roll for tissue paper products described above.
The type of calendar in the calendar means 52 is not particularly limited, but is preferably a soft calendar or a chilled calendar for the purpose of improving the smoothness of the surface and adjusting the paper thickness. The soft calendar is a calendar using a roll coated with an elastic material such as urethane rubber, and the chilled calendar is a calendar made of a metal roll.

The number of calendar means 52 can be changed as appropriate. If there is a plurality of installations, it has the advantage that it can be sufficiently smoothed even if the processing speed is high.
When two or more calendar means 52 are installed, they can be arranged side by side in the horizontal direction, the up-down direction, or the diagonal direction, and these installation directions may be combined. When arranged side by side in the horizontal direction, the holding angle becomes smaller, so the processing speed can be increased, and when arranged side by side in the vertical direction, the installation space can be reduced. Here, the holding angle means an angle while the sheet is in contact as viewed from the roll axis center (a part of a circular arc of a cross section perpendicular to the axis) (hereinafter the same).
Paper making is also performed as control factors such as calendar type, nip line pressure, and number of nips in the calendar processing conditions, and these control factors are preferably changed as appropriate depending on the quality of tissue paper to be obtained, that is, paper thickness and surface properties.
Further, the installation position of the calendar means 52 is not particularly limited. However, it is located after the ply means 51 and before the chemical spray means 53, after the chemical spray means 53 and before the contact emboss means 54. Can do.

(Contact embossing means)
The production facility X1 for the secondary paper roll for tissue paper products can be provided with contact embossing means 54 for imparting contact embossing to the laminated continuous sheet S2.

  Here, as shown in FIG. 13, in the contact embossing means 54, a receiving roll 54B, which is a metal roll or an elastic roll, and a metal, hard roller 54A having a fine convex portion 54C on the surface have a predetermined pressure. The outer peripheral surfaces are in contact with each other, and are installed so as to be rotatable. Then, with respect to the portion corresponding to the center in the width direction of the tissue paper product in the laminated continuous sheet S2, the laminated continuous sheet S2 is conveyed while sandwiching the laminated continuous sheet S2 between the convex portion 54C and the receiving roll 54B. Thus, line-shaped contact embossing CE for preventing delamination along the continuous direction of the laminated continuous sheet S2 is applied to the laminated continuous sheet S2.

  In addition, the winding means 56 mentioned above winds up the lamination | stacking continuous sheet S2 by making the surface on the side facing the roller 54A which performs this contact embossing CE into an outer peripheral side.

By providing the contact embossing CE in this manner, delamination of the laminated continuous sheet S2 formed by laminating a plurality of primary continuous sheets (S11 and S12 in the illustrated example) is prevented. In addition, it is preferable that the contact embossing CE is formed so as to be positioned on both sides in the width direction of the tissue paper product so that the end portion of the tissue paper product is hardly delaminated.
The location where the contact embossing means 54 is installed is not particularly limited, but it is a stage subsequent to the chemical solution applying means 53 and preceding the slit means 55, and a stage subsequent to the calendar means 52 and preceding the chemical solution applying means 53. But you can. That is, it suffices if it is at a position after the calendar means 52 and before the slit means 55.

  When the contact embossing means 54 is applied by the contact embossing means 54, the contact embossing CE is applied within 0.3 to 2.5 seconds, preferably within 0.3 to 1.0 seconds after the chemical solution is applied to the laminated continuous sheet S2. It is also proposed to give If the time is less than 0.3 seconds, the chemical solution is not sufficiently absorbed by the base paper, so that the chemical solution adheres to the receiving roll 54B and the roller 54A and the paper is cut off, or dirt is attached to the receiving roll 54B and the roller 54A. If it exceeds 2.5 seconds, the laminated continuous sheet S2 to which the chemical solution has been applied stretches, so that subsequent process wrinkles are less likely to occur, making it difficult to obtain a bulky tissue paper product. In addition, when the laminated continuous sheet S2 is fully stretched, there is no stretch that can cope with draw fluctuations, and the tensile strength is reduced due to moisture absorption and water absorption.

Further, in this joining process, in the present embodiment, a metal and hard roller 54A having a fine convex portion 54C on the surface is used as a roller, but a line-shaped joint that prevents delamination from the laminated continuous sheet S2. For example, instead of the roller 54A, a roller having a fine needle-like member on the surface can be used as the roller.
Furthermore, the means for joining is not limited to the above example, and the tip shape of the convex portion may be a point, square, rectangular, circular, elliptical shape, etc. A tip having a slender linear shape or a thin and slanting linear shape may be used as the roller.

  On the other hand, the arrangement of the protrusions may be equally spaced, but may not be staggered or evenly spaced. In addition to arranging the protrusions in a row and providing contact embossing continuously, It is also conceivable to arrange the parts in two or more rows. Then, a plurality of groups in which convex portions are arranged so as to provide a plurality of rows of contact embossing closely may be arranged to provide a plurality of contact embossing groups. In addition, as a joining process, you may join by other means, such as an ultrasonic wave, besides joining by applying a pressure mechanically as mentioned above.

(Medication spraying means)
In the manufacture of the secondary raw material roll for tissue paper products according to the present embodiment, it is applied to the laminated continuous sheet S2 while spraying a chemical solution.
Although it does not specifically limit as the chemical | medical solution spraying means 53, In addition to the case of a nozzle type spray system, you may use a rotor dampening spray system.

  Among these, the types of spray nozzles in the nozzle spray device include an empty conical nozzle that sprays in an annular shape, a full conical nozzle that sprays in a circular shape, a full pyramid that sprays in a square shape, a full nozzle and a fan Type nozzles, etc., so that the chemical solution is sprayed uniformly in the width direction of the sheet, the nozzle diameter, the number of nozzles, the nozzle arrangement pattern, the number of nozzles, or the spray distance, spray pressure, spray angle, and spray The concentration and viscosity of the liquid can be appropriately selected and used.

  Moreover, about the method of atomizing in a nozzle type spraying apparatus, it can select and use two types, a 1 fluid system or a 2 fluid system. Of these, the one-fluid spraying method applies pressure directly to the chemical liquid to be sprayed using compressed air and sprays mist droplets from the nozzle, or blows air into the nozzle from a fine hole opened on the side of the nozzle near the jet outlet. This is a method of sucking and spraying mist. In addition, the two-fluid spraying method is mixed with a liquid sprayed with compressed air inside the nozzle, an internal mixing type that atomizes, mixed with a liquid sprayed with compressed air outside the nozzle, an external mixing type that atomizes, and atomized Examples include a collision type system in which mist droplet particles collide with each other to further homogenize and atomize the mist droplet particles.

On the other hand, the rotor dampening coating device is a device that sends out the liquid to be sprayed onto a disk that rotates at high speed, and makes the liquid atomized by the centrifugal force of the disk, and controls the particle size of the droplets by changing the rotational speed of the disk. The amount of spray liquid (applied amount) is controlled by changing the amount of liquid fed onto the disk. Is. Rotor dampening applicator can apply a small amount of spray liquid evenly on the surface of pigment coated paper while suppressing spraying of mist droplets, and it is easy to adjust the spraying speed and the particle size of mist. There are certain advantages.
In order to spray the chemical solution uniformly on the sheet surface, the atomized particle size of the atomized chemical solution is preferably as small as possible. However, if the mist droplets become too fine, the mist droplets will be swept away by the rebound of the sprayed air or the air accompanying the sheet surface, and the mist droplets will not easily adhere to the sheet surface, especially when the traveling speed of the sheet is high. Become. For this reason, in the spray application system, the spray distance, spray pressure, spray angle, spray speed, and in the case of the two-fluid system, the mixing ratio of the chemical liquid for spraying and the compressed air, the concentration and viscosity of the chemical liquid, etc. It can be adjusted appropriately to adjust the particle size to suit the application conditions. If the influence of the accompanying air is large during spraying, installation of a suction device or baffle plate (rectifying plate) to remove the accompanying air, Further, a charged electrode (electrostatic spraying method) or the like may be added to apply high voltage to the tip of the spray nozzle to charge the mist droplet particles to improve the appropriate adhesion of the mist to the pigment coated paper.
The mist droplets floating as mist without being applied to the sheet surface can be sucked and collected and sprayed again.

  FIG. 12 shows an example of a nozzle type spray method, particularly a two-fluid type chemical spray device 53A (53B). This device 53A has a chemical liquid passage 53a at its center and an air passage 53b around it, and atomizes the chemical liquid ejected from the tip of the chemical liquid passage 53a with the air discharged from the air passage 53b. The chemical solution is sprayed in a substantially conical shape. Reference numeral 53c denotes an external protective casing that protects the nozzle from paper dust and the like, and can clean the nozzle with air that passes through the purge air passage 53d if necessary. This kind of chemical spraying device 53A (53B) can be provided at one or more intervals in the width direction of the sheet.

  As described above, the mist droplets are washed away by the rebound of the sprayed chemical liquid or the air accompanying the surface of the sheet, and particularly when the traveling speed of the sheet is high, the mist droplet is difficult to adhere to the sheet surface. Therefore, if necessary, as shown in FIG.

When the sprayed chemical liquid from the chemical liquid spraying means (spray nozzle) is surrounded by the air sprayed from the air supply path 53f formed in the casing 53e from around the chemical liquid spraying means (spray nozzle) 53, the chemical liquid is suitably applied to the sheet S2. be able to.

  FIG. 15 shows an example of a rotor dampening coating device 53X. In this case, a rotating rotor 53o is provided in a cover housing chamber 53p provided as necessary, and a chemical solution is sprayed onto the sheet S2 from an ejection port 53q of the rotating rotor 53o.

  By the way, it is preferable that the means (calendar means 52 and contact embossing means 54 in the example of FIG. 11) arranged before and after the chemical solution spraying means 53 are arranged close to each other. By doing so, when manufacturing a tissue paper product to which no chemical liquid is applied, the laminated continuous sheet S2 is directly transferred from the front stage to the rear stage of the chemical liquid spraying means 53, and the laminated continuous sheet S2 is not passed through the chemical liquid spraying means 53. Since it only has to pass through, it is possible to easily switch the presence or absence of chemical application. For example, in the manufacturing equipment X1 for the secondary paper roll for tissue paper products shown in FIG. 11, when manufacturing the tissue paper products to which no chemical solution is applied, as shown by the two-dot chain line in FIG. It is only necessary to transfer directly from the means 52 to the contact embossing means 54 and to flow the laminated continuous sheet S2 without passing through the chemical solution spraying means 53.

When imparting chemical on both surfaces of the laminated continuous sheet S2, chemical application amount of the double-sided total is a 1.5~5.0g / m ^2, is preferably a 2.0 to 4.5 g / m ^2, More preferably, it is 2.5 to 4.0 g / m ² . If it exceeds 5.0 g / m ² , the paper may be cut due to a decrease in paper strength or elongation, winding may occur when winding with a winding drum, or the quality may be too sticky. . If it is less than 1.5 g / m ² , it will not be possible to feel the quality difference from the unassigned product such as smoothness and moist feeling.
In addition, when there is a difference in the application amount to both application surfaces, since both application surfaces are in contact with each other during the time (8 hours or more) from being stored in the ply original fabric to being folded after spray application, Gradually, the amounts of both chemicals are equalized, and the difference between the two sides becomes smaller.

When applying a chemical | medical solution only to the single side | surface of lamination | stacking continuous sheet S2, the application | coating surface of a chemical | medical solution is to the surface (surface at the side of primary continuous sheet S11) located in the outer side of the secondary original fabric roll R in lamination | stacking continuous sheet S2. Grant is good. In this way, there is a difference between the front and the back of the product, but it is difficult to cause winding slip. In this case, the applied amount is 1.5 to 5.0 g / m ² , preferably 2.0 to 4.5 g / m ² , more preferably 2.5 to 4.0 g / m ^2. .

  Moreover, when providing a difference in the crepe rate of each primary continuous sheet constituting the laminated continuous sheet S2, more chemical solution is applied to the primary continuous sheet side having the higher crepe rate (primary continuous sheet S11 side in the illustrated example). Is also proposed. For example, in the example shown in FIG. 11 and FIG. 20, out of the two chemical spraying means 53, the chemical spraying means 53B that directly applies the chemical liquid to the primary continuous sheet S11 is more than the other chemical spraying means 53A. The chemical solution shall be applied. In this case, the ratio of the applied amount of the chemicals on both sides is 100: 0 to 60:40, preferably 75:25 to 60:40.

FIG. 20A is a cross-sectional view of the laminated continuous sheet S2 laminated on the two plies before applying the chemical solution (cross-sectional view cut in parallel with the MD direction). In applying the chemical solution to both surfaces of the laminated continuous sheet S2 laminated in two plies, a difference is provided in the amount of the chemical solution on both surfaces, and in the drawing, a large amount of chemical solution is applied to the primary continuous sheet S11 side. After the chemical solution is applied, before the laminated continuous sheet S2 is fully extended, the laminated layers are integrated by the contact embossing CE, and cut into the product width by the slit means 55 (FIG. 20B). Thereafter, the laminated continuous sheet S2 is taken up by the take-up means 56 and is left to stand for infiltration of the chemical solution. The primary continuous sheets S11 and S12 constituting the laminated continuous sheet S2 to which the chemical solution is applied by the chemical solution spraying means 53 mainly extend in the MD direction. At that time, the primary continuous sheet S11 to which more chemical solution is applied has a higher elongation rate than the other primary continuous sheet S12, but the primary continuous sheets S11 and S12 are fixed to each other by the contact embossing CE. Wrinkles occur on the surface of the extended primary continuous sheet S11 ( FIG. 20C ). A difference is also provided in the crepe rate of the laminated continuous sheet S2 to be laminated, and if a base paper having a high crepe rate is used for the primary continuous sheet S11, a difference may be caused in the elongation rate between the primary continuous sheet S11 and the primary continuous sheet S12. it can.

  In the example of FIG. 1, the crepe is formed by the difference between the dryer speed and the winding speed after the base paper is dried by the Yankee dryer 115 and then peeled off from the Yankee dryer 115 by the doctor blade 117. The shape of this crepe is adjusted by sticking the paper to the Yankee dryer 115, but since there is some variation in this sticking and the fiber raw material is not evenly distributed, There is some variation in the three-dimensional crepe shape. This variation becomes more prominent as the crepe rate increases.

  Along with the variation in the crepe, there is also a variation in the elongation when the chemical solution is applied, which is formed as a three-dimensional fine wave. This wave does not become apparent during the seasoning of the original fabric because tension is applied, but it is restored and becomes apparent after processing and cutting into a product. The greater the amount of chemical applied to the sheet, the greater the crepe, the greater the change in the crepe shape, the greater the corrugation of the sheet, and the smaller the amount of chemical applied to the sheet, the smaller the crepe, the smaller the crepe shape, The undulation is small. For this reason, a bulky effect can be synergized by changing not only the applied amount but also the crepe rate.

  In addition, regarding the quality, when the primary continuous sheets S11 and S12 having different crepe rates are laminated to produce a product, the tissue paper, which is a product, has a different bulk feeling unless the chemical solution is applied (FIG. 21 ( A)). However, by applying more chemical solution to the primary continuous sheet S11 having a larger surface irregularity (high crepe rate), the primary continuous sheet S11 extends at a higher elongation rate than the primary continuous sheet S12. Since it is fixed in parallel with the MD direction (not shown), the primary continuous sheet S11 corrugates and the bulk of the laminated sheet increases. (FIG. 21B)).

  By providing a difference in the amount of chemical applied, there is a concern that the touch on both sides of the product and the feeling of use will be different, but in the state of the roll before subjecting the secondary roll R to the next step (folding etc.) Since the surfaces of the primary continuous sheets S11 and S12 having different chemical application amounts are kept opposite to each other by being left standing (chemical solution infiltration process, FIG. 22), the chemical components between the continuous sheets are transferred little by little ( The difference is gradually reduced during seasoning. In addition, the white arrow in FIG. 22 shows the osmosis | permeation direction of a chemical | medical solution component.

(Medical solution)
About the chemical | medical solution to provide, a viscosity shall be 1-700 mPa * s at 40 degreeC from a viewpoint of performing high-speed processing. More preferably, it is set to 50 to 400 mPa · s (40 ° C.). If it is less than 1 mPa · s, the chemical solution is likely to be scattered on rolls such as anilox roll, printing plate roll, and gravure roll, and conversely if it is more than 700 mPa · s, it is difficult to control the amount applied to each roll or continuous sheet. Ingredients include 70-90% polyol, 1-15% moisture, and 0.01-22% functional chemicals.
The polyol includes polyhydric alcohols such as glycerin, diglycerin, propylene glycol, 1,3-butylene glycol, polyethylene glycol, and derivatives thereof, and saccharides such as sorbitol, glucose, xylitol, maltose, maltitol, mannitol, and trehalose.
Functional agents include softeners, surfactants, inorganic and organic fine particle powders, oily components, and the like. Softeners and surfactants have the effect of imparting flexibility to the tissue and smoothing the surface, and anionic surfactants, cationic surfactants and zwitterionic surfactants are applied. Inorganic and organic fine particle powders have a smooth surface. The oil component has a function of improving lubricity, and higher alcohols such as liquid paraffin, cetanol, stearyl alcohol, and oleyl alcohol can be used.
In addition, as a functional agent, one of a hydrophilic polymer gelling agent, collagen, hydrolyzed collagen, hydrolyzed keratin, hydrolyzed silk, hyaluronic acid or a salt thereof, ceramide, etc. A moisturizing agent such as any combination can be added.
Deodorants such as flavors, emollients such as various natural extracts, vitamins, emulsifiers that stabilize compounding ingredients, antifoaming agents, antifungal agents, organic acids, etc. An agent can be appropriately blended. Furthermore, you may contain the antioxidant of vitamin C and vitamin E.
Among the above components, it is preferable to use a polyhydric alcohol such as glycerin or propylene glycol as a main component in order to stabilize the viscosity and applied amount of the chemical.
The temperature at the time of chemical solution application is preferably 30 ° C to 60 ° C, preferably 35 ° C to 55 ° C.

(Primary continuous sheet)
The raw material pulp of primary continuous sheet S11, S12 is not specifically limited, According to the use of tissue paper products, an appropriate raw material pulp can be selected and used. As raw material pulp, for example, wood pulp, non-wood pulp, synthetic pulp, waste paper pulp, and the like, more specifically, groundwood pulp (GP), stone ground pulp (SGP), refiner ground pulp (RGP), pressure type Mechanical pulp (MP), chemical mechanical pulp (CGP), semi-chemical pulp (such as ground pulp (PGW), thermomechanical pulp (TMP), chemithermomechanical pulp (CTMP), bleach chemithermomechanical pulp (BCTMP) Chemical pulp (SCP), kraft pulp (KP) such as hardwood bleached kraft pulp (LBKP), softwood bleached kraft pulp (NBKP), soda pulp (AP), sulfite pulp (SP), dissolved pulp (DP), etc. CP), nylon, rayon, polyester, polyvinyl alcohol Synthetic pulp made from (PVA) etc., deinked pulp (DIP), waste paper pulp such as waist pulp (WP), waste pulp (TP), cotton, flax, hemp, jute, manila hemp, ramie etc. One or several kinds of rag pulp, straw pulp, esparto pulp, bagasse pulp, bamboo pulp, kenaf pulp, and other auxiliary pulps such as bast pulp can be appropriately selected and used.

  In particular, the raw material pulp is preferably a blend of NBKP and LBKP. Waste paper pulp may be blended as appropriate, but in terms of texture and the like, it may be composed only of NBKP and LBKP, and the blending ratio (JIS P 8120) in that case is NBKP: LBKP = 20: 80-80: 20 is good, and NBKP: LBKP = 30: 70-60: 40 is particularly desirable.

The primary continuous sheets S11 and S12 have a basis weight according to JIS P 8124 of 10 to 25 g / m ² , preferably 12 to 20 g / m ^2, and more preferably 13 to 16 g / m ² . When the basis weight is less than 10 g / m ² , it is preferable in terms of softness, but an appropriate strength cannot be ensured. On the other hand, when the basis weight exceeds 25 g / m ² , it becomes too hard and the touch is deteriorated.
Further, the paper thickness (measured with a Peacock manufactured by Ozaki Seisakusho) is 80 to 250 μm, preferably 100 to 200 μm, more preferably 130 to 180 μm per ply.

The primary continuous sheets S11 and S12 preferably have a crepe rate of 10 to 30%, more preferably 12 to 25%, and particularly preferably 13 to 20%. When the crepe rate is less than 10%, it becomes a tissue paper product that is easy to break during processing and has little stretch and is not stiff. On the other hand, if the crepe rate is more than 30%, it is difficult to control the tension of the sheet during processing, and the paper tends to be cut off.
Here, the crepe rate is expressed by the following equation.
Crepe rate: {(peripheral speed of the dryer during papermaking)-(peripheral speed of the reel)} / (peripheral speed of the dryer during papermaking) × 100.

  The primary continuous sheets S11 and S12 have a dry tensile strength (hereinafter also referred to as dry paper strength) specified in JIS P 8113 of 2 to 200 p-200 cN / 25 mm, preferably 250 to 600 cN / 25 mm. The lateral direction is preferably 300 to 600 cN / 25 mm, and the lateral direction is 100 to 300 cN / 25 mm, preferably 130 to 270 cN / 25 mm, particularly preferably 150 to 250 cN / 25 mm. If the dry tensile strength of the base paper is too low, troubles such as paper breakage and elongation at the time of production and use are likely to occur, and if it is too high, the touch becomes stiff when used.

  These paper strengths can be adjusted by a known method. For example, a dry paper strength enhancer is internally added (added to a stage before the dryer part, for example, pulp slurry), and the freeness of pulp is reduced (for example, about 30 to 40 ml). A method of increasing (for example, 50% or more) the NBKP compounding ratio can be appropriately combined.

  As the dry paper strength agent, starch, polyacrylamide, CMC (carboxymethyl cellulose) or a salt thereof such as sodium carboxymethyl cellulose, carboxymethyl cellulose calcium, carboxymethyl cellulose zinc and the like can be used. As the wet paper strength agent, polyamide polyamine epichlorohydrin resin, urea resin, acid colloid / melamine resin, thermal crosslinkability imparting PAM and the like can be used. When the wet paper strength agent is internally added, the addition amount can be about 5 to 20 kg / t in weight ratio to the pulp slurry. In addition, when the dry paper strength agent is internally added, the addition amount can be about 0.5 to 1.0 kg / t by weight ratio to the pulp slurry.

Next, the other form of the manufacturing equipment and manufacturing method of the secondary raw material roll for tissue paper products is demonstrated.
[Production equipment and production method for secondary roll for second tissue paper product]
For example, as shown in FIG. 16, tension control means 57 for controlling the tension of the laminated continuous sheet S2 may be provided between the chemical spray means 53 and the contact embossing means 54. The tension control means 57 is formed of a cylindrical roll, and can be moved up and down in accordance with the bending state of the laminated continuous sheet S2.
In addition, when the tension control means 57 is provided as in the form shown in FIG. In this case, in the calendar means 52 arranged at the subsequent stage of the tension control means 57, when applying the chemical solution, the calendar roll 52A is separated from the receiving roll 52B by a distance equal to or greater than the paper thickness of the laminated continuous sheet S2 to form the laminated continuous sheet S2. On the other hand, it is also proposed to let the user pass through without performing the smoothing process.

[Production equipment and production method for secondary roll for third tissue paper product]
As shown in FIG. 17, the contact embossing means 54 can be installed between the calendar means 52 and the chemical solution spraying means 53. The manufacturing method of the secondary raw material roll for tissue paper products using such manufacturing equipment X3 of the secondary raw material roll for tissue paper products is as follows.
As shown in FIG. 17, in the manufacturing method of the secondary paper roll for tissue paper products which concerns on this form, the primary continuous sheet (S11, S12 in the example of illustration) which is drawn | fed out from the several primary raw material roll by the ply means 51. Are laminated along the continuous direction to form a laminated continuous sheet S2 (lamination step), and the laminated continuous sheet S2 is smoothed by a pair of calendar means 52 (smoothing step), and the smoothed lamination is performed. Contact embossing is applied to the continuous sheet S2 by the contact embossing means 54 (contact embossing process), and a chemical solution is applied to the laminated continuous sheet S2 provided with the contact embossing by the pair of chemical liquid spraying means 53 (chemical solution applying process) ), And the slitting means 55 causes the laminated continuous sheet S2 to have a product width of the tissue paper product or a multiple of the product width. Next, the laminated continuous sheet S2 slit in the slitting process is wound up coaxially to wind up the product width of the tissue paper product or a plurality of secondary raw rolls R having a multiple of the width. Formed by means 56.
In addition, when manufacturing the tissue paper product to which the chemical solution is not applied at the manufacturing facility X3 of the secondary paper roll for tissue paper product, the laminated continuous sheet S2 is removed from the contact embossing means 54 as shown by a two-dot chain line in FIG. It is only necessary to directly transfer to the slit means 55 and flow the laminated continuous sheet S2 without passing through the chemical spray means 53.

[Fourth Raw Material Roll Production Equipment and Method for Tissue Paper Products]
As shown in FIG. 18, in the chemical application step 53, the contact embossing means 54 is installed between the ply means 51 and the calendar means 52, and the chemical spraying means 53 and the contact embossing means 54 are arranged with the calendar means 52 as one stage. It can also be installed in between. The manufacturing method of the secondary raw material roll for tissue paper products using such manufacturing equipment X4 of the secondary raw material roll for tissue paper products is as follows.
As shown in FIG. 18, in the manufacturing method of the secondary paper roll for tissue paper products which concerns on this form, the primary continuous sheet (S11, S12 in the example of illustration) which is drawn | fed out from several primary raw material rolls by the ply means 51. Are laminated in the continuous direction to form a laminated continuous sheet S2 (laminating step), and a chemical solution is applied by a pair of chemical spraying means 53 arranged in parallel in the vertical direction with respect to the laminated continuous sheet S2 (chemical solution applying step) ), Smoothing process is performed by a pair of calendar means 52 (smoothing process), contact embossing is applied to the smoothed laminated continuous sheet S2 by the contact embossing means 54 (contact embossing process), and the slit means 55 The laminated continuous sheet S2 is slit so as to have a product width of tissue paper products or a multiple of the width (slit process), and then A laminated continuous sheet S2, which is slit in slit step is wound coaxially a plurality of secondary master roll R of product width or a multiple width of tissue paper products are formed by the winding means 56.
In addition, when manufacturing the tissue paper product to which the chemical solution is not applied at the manufacturing facility X4 of the secondary paper roll for tissue paper product, the laminated continuous sheet S2 is contacted from the calendar means 52 as shown by a two-dot chain line in FIG. It is only necessary to transfer to the embossing means 54 and flow the laminated continuous sheet S2 without passing through the chemical spray means 53.

[Fifth tissue paper product secondary roll production equipment and production method]
As shown in FIG. 19, a pair of calendar means 52 can be arranged along the vertical direction, and a pair of chemical spraying means 53 can be arranged along the vertical direction.
The manufacturing method of the secondary raw material roll for tissue paper products using such manufacturing equipment X5 of the secondary raw material roll for tissue paper products is as follows.
As shown in FIG. 19, in the manufacturing method of the secondary raw material roll for tissue paper products which concerns on this form, the primary continuous sheet (S11, S12 in the example of illustration) which is drawn | fed out from a several primary raw material roll by the ply means 51. Is laminated along the continuous direction to form a laminated continuous sheet S2 (lamination step), and the laminated continuous sheet S2 is smoothed by a pair of calendar means 52 (smoothing step), and the laminated continuous sheet S2 Then, a chemical solution is applied by a pair of chemical spraying means 53 (chemical solution applying process), contact embossing is applied by the contact embossing means 54 to the laminated continuous sheet S2 (contact embossing process), and the laminated continuous sheet S2 is applied by the slit means 55. Slit to make the product width of tissue paper product or multiple times the width (slit process), then slit work In a plurality of secondary master roll R of the slit has been product width or a multiple width of wound to tissue paper products layered continuous sheet S2 coaxial, formed by winding means 56.
In addition, when manufacturing the tissue paper product to which no chemical solution is applied at the manufacturing facility X5 for the secondary paper roll for tissue paper product, the laminated continuous sheet S2 is contacted from the calendar means 52 as shown by a two-dot chain line in FIG. It is only necessary to transfer directly to the embossing means 54 and flow the laminated continuous sheet S2 without passing through the chemical spraying means 53.

  Next, a tissue paper product (Example) is manufactured with the above-mentioned multi-stand type interfolder using the secondary material roll manufactured by the manufacturing method of the secondary material roll X1 for tissue paper products shown in FIG. The comparison was made with a reference example and a comparative example using the flexo transfer method.

<Base paper>
In Examples 1-6, the pulp which comprises a base paper was NBKP30% and LBKP70%. Further, a crepe rate of 19% was used. About Examples 1-6, the chemical | medical solution of the same composition as the comparative example 2 was prepared so that a viscosity might be set to 110 mPa * s (40 degreeC).
Examples 1-3 are based on the spray form by the rotor dampening system shown in FIG. 15, and Examples 4-6 are based on the spray form by the nozzle system shown in FIG.
The comparative examples in Table 2 are all commercially available products, Comparative Example 1 is a non-humidifying general-purpose tissue paper marketed by the applicant, and Comparative Examples 2 to 2 are moisturizing lotion type tissue papers. Comparative Example 2 is a lotion type tissue paper marketed by the applicant, but since Comparative Examples 3 and 4 are commercial products of other companies, they contain unknown contents.

Each parameter shown in Table 1 and Table 2 is as follows.
Rice tsubo (basis weight): Measured according to JIS P 8124 (1998). In the case of a two-ply tissue product, the average weight of a 2-ply sheet is listed.
Under the conditions of the paper thickness ··· JIS P 8111 (1998), Ru der shall be measured using a dial thickness gauge (thickness measuring instrument) "PEACOCK G type" (manufactured by Ozaki Seisakusho). Specifically, confirm that there is no dust, dust, etc. between the plunger and the measuring table, lower the plunger on the measuring table, move the memory of the dial thickness gauge to adjust the zero point, and then Raise the plunger, place the sample on the test bench, slowly lower the plunger and read the gauge at that time. At this time, only the plunger is placed. The terminal of the plunger is made of metal so that a circular plane having a diameter of 10 mm is perpendicular to the plane of the paper, and the load at the time of measuring the paper thickness is about 70 gf. The paper thickness is an average value obtained by performing measurement 10 times.
Product density: The product density is the paper (2 ply) of tissue paper by “PEACOCK G type”, which is a doubled value (C) of the tissue paper product tsubo conditioned under JIS P 8111 conditions. The value is divided by the thickness (D), and the unit is expressed in g / cm ³ and three decimal places.
Dry tensile strength: Measured according to the tensile test method of JIS P 8113 (1998).
Wet tensile strength: Measured according to JIS P 8135 (1998).
Elongation rate: Measured using Minebea Co., Ltd. “Universal Tensile and Compression Tester TG-200N”.
Softness: Measured based on the handle ohm method according to JIS L1096 E method. However, the test piece was 100 mm × 100 mm in size, and the clearance was 5 mm. The measurement was performed 5 times each in the vertical direction and the horizontal direction with 1 ply, and the average value of all 10 times was defined as one decimal point and expressed in units of cN / 100 mm.
Coefficient of static friction: Measured by the following method according to JIS P 8147 (1998). Stick the tissue paper peeled on one ply to the acrylic plate so that the front side of the paper is on the outside. Wrap tissue paper around a 100 g weight with 2 plies and place it on the tissue on the acrylic plate. Tilt the acrylic plate and measure the angle at which the weight slides down. The angle measurement is performed four times in the vertical direction and four times in the horizontal direction for a total of eight times, the average angle is calculated, and the tangent value is taken as the static friction coefficient.
MMD is an average deviation MMD of the static friction coefficient. MMD is one of the indices of smoothness. The smaller the numerical value, the smoother, and the larger the numerical value, the less smooth. As a method for measuring the MMD value, as shown in FIG. 23A, a tension of 20 g / cm is applied to the contact surface of the friction element 212 in a predetermined direction (downward and rightward in FIG. 23A). While being brought into contact with the surface of the tissue paper 211, which is the measured sample, at a contact pressure of 25 g, it is moved 2 cm at a speed of 0.1 cm / s in the same direction as the direction in which the tension is applied. The friction coefficient at this time was measured using a friction feeling tester KES-SE (manufactured by Kato Tech Co., Ltd.), and the value obtained by dividing the friction coefficient by the friction distance (movement distance = 2 cm) was defined as the MMD value. The friction element 212 includes 20 piano wires P having a diameter of 0.5 mm adjacent to each other, and has a contact surface formed so that the length and the width are both 10 mm. The contact surface is formed with a unit bulging portion whose tip is formed of 20 piano wires P (curvature radius 0.25 mm). FIG. 23 (a) schematically shows the friction element 212, and FIG. 23 (b) shows an enlarged view of a portion surrounded by a dashed line in FIG. 23 (a).
Moisture content: Measured according to JIS P 8111 (1998).
Chemical solution content: The chemical solution application amount indicates the content of the chemical component in a dry state (absolutely dry) included in the unit area of tissue paper in the standard state of JIS P 8111. The content of components other than moisture in the chemical solution shall be indicated. The unit area of the tissue paper is an area of the plyed sheet viewed from a viewpoint perpendicular to the plane, and does not mean the total area of each plyed sheet and its front and back surfaces.
Chemical solution content ratio: Chemical solution application rate means that the tissue paper product with a predetermined mass conditioned under JIS P 8111 conditions is the denominator (A) (g), and the chemical solution contained in the tissue paper product with the predetermined mass The ratio of (B) divided by (A) is expressed as (%), with the mass (B) (g) excluding the moisture of (b) as a molecule. (Chemical solution content%) = (B) ÷ (A) × 100 (%)
Sensory evaluation: For Examples 1 to 6, Reference Examples 1 and 3, and Comparative Examples 1 and 2, targeting 87 consumers, softness, smoothness, thickness, moistness based on the following criteria Evaluation was performed. Moreover, about the comparative examples 3 and 4, sensory evaluation was performed for 12 different persons with different dates.
The evaluation criteria are “3” for all the results of the non-humidifying general-purpose tissue paper (Comparative Example 1) to which no chemical solution is applied, and “5”, “ “4” for those who felt “excellent”, “3” for those who felt “equivalent to the standard”, “2” for those who felt “inferior”, “notably inferior” The thing was set to “1”. In addition, the tissue-coated tissue paper is also evaluated for the presence or absence of a sticky feeling, and the evaluation criteria are “○” for “less sticky” and “×” for “obviously sticky”. did.

As can be seen from the results in Table 1 and Table 2, the secondary roll roll manufactured by the method for manufacturing a secondary roll for tissue paper products according to the present invention is used to manufacture the multi-stand type interfolder. In addition, the chemical-containing tissue paper product has a high ratio of the paper thickness (2P: 2 ply) to the rice tsubo, and the sensory evaluation is particularly high in “thickness”.
Moreover, although not described in the table, in any of Examples 1 to 5, compared with the flexo method of Reference Examples 1 to 3 and the gravure transfer method of Comparative Example 2 at the manufacturing site, the paper It was found that there was very little generation of powder and stable production was possible.

As is apparent from the above description, the present specification and drawings also disclose the following invention.
[Invention A]
An apparatus for producing a secondary web roll for tissue paper products that continuously produces a plurality of secondary web rolls for tissue paper products from a primary web roll,
Laminating means for laminating a primary continuous sheet fed from a plurality of primary raw rolls along the continuous direction to form a laminated continuous sheet;
A chemical spraying means for applying a chemical in a sprayed state to the laminated continuous sheet;
Slitting means for slitting the laminated continuous sheet so as to be a product width of tissue paper products or a multiple of the width,
Tissue paper product comprising winding means for winding each slit continuous sheet coaxially to form a product width of the tissue paper product or a plurality of secondary raw rolls of multiple widths thereof. Secondary roll roll manufacturing equipment.

[Invention B]
The manufacturing apparatus of the secondary raw material roll for tissue paper products of the invention A in which the said chemical | medical solution spraying means is performed after the said lamination | stacking means and before the said slit means.

[Invention C]
The manufacturing apparatus of the secondary raw material roll for tissue paper products of the invention B which has a smoothing process of smoothing with a calender between the said lamination | stacking means and the said chemical | medical solution spraying means.

[Invention D]
The secondary raw material for tissue paper products according to the invention B, further comprising contact embossing means for applying line-shaped contact embossing for preventing delamination on the laminated continuous sheet between the chemical spraying means and the slit means. Anti-roll manufacturing equipment.

[Invention E]
The apparatus for producing a secondary paper roll for tissue paper products according to Invention A, wherein the chemical solution is applied by a nozzle spray method.

[Invention F]
The manufacturing apparatus of the secondary raw material roll for tissue paper products of Claim 1 whose provision of the said chemical | medical solution is based on a rotor dampening spray system.

[Invention G]
A large number of the secondary web rolls obtained by the invention of any one of the above-mentioned inventions are prepared, arranged in the line direction in a multi-stand type interfolder, and a plurality of secondary web rolls fed out from each secondary web roll The secondary continuous sheet is transported along the continuous direction and stacked while being folded in the transport process. After that, a predetermined number of laminated sheets are cut to a predetermined length to form a tissue paper bundle, and this stack is stored in a storage box. An apparatus for manufacturing tissue paper products, characterized in that:

  The present invention can be applied to the production of a secondary roll for tissue paper products used in a multi-stand type interfolder.

51 ... Ply process (lamination means)
52 ... Calendar means (smoothing process)
53 ... Chemical solution spraying means (chemical solution applying step)
54 ... Contact embossing means (contact embossing process)
55 ... Slit means (slit process)
56 ... Winding means (winding process)
S11, S12 ... primary continuous sheet S2 ... laminated continuous sheet JR ... primary raw roll R ... secondary raw roll

  The present invention relates to a method for manufacturing a secondary paper roll for tissue paper products used in a multi-stand type interfolder and a method for manufacturing tissue paper products.

A box of tissue paper is generally obtained by stacking multiple tissue papers by folding them with an interfolder (folding equipment) and cutting them into a predetermined length to obtain a tissue paper bundle. It is manufactured by storing in a storage box (tissue carton).
Examples of such interfolders include multi-stand type (multiple type) interfolders as disclosed in Patent Documents 1 and 2 below, and rotary interfolders as disclosed in Patent Documents 3 and 4 below. It has been known.
The following is a conventional example of a manufacturing method using a multi-stand type interfolder. That is, a primary web roll (generally also called a jumbo roll) is manufactured by making a thin paper in a papermaking facility and winding it. Then, this primary web roll is set on a ply machine, and a plurality of primary webs are produced. The primary continuous sheet fed from the roll is overlapped and wound and slit (divided into the product width of the tissue paper product or a multiple of the width of the tissue paper product in the width direction) to produce a secondary raw roll made of a plurality of plies.
After the secondary roll manufactured by the ply machine is taken out from the ply machine, the necessary number of rolls are set in the multi-stand type interfolder. Next, the secondary continuous sheet is fed out from the secondary web roll and fed to the folding mechanism, where it is stacked while being folded, and then cut into a predetermined length to form a tissue paper bundle, which is stored in a storage box. .
A manufacturing method using such a multi-stand type interfolder has a higher number of folding mechanisms (usually 80 to 100) than a manufacturing method using other folding equipment, and is therefore highly productive. Has advantages.

  By the way, in recent years, the demand for a tissue paper product coated with a chemical such as a moisturizer (usually also referred to as “lotion chemical”) has increased, and for example, a manufacturing method as disclosed in Patent Documents 5 to 7 below Various facilities have been proposed. In general, tissue paper products containing such a lotion chemical are mainly manufactured by a rotary interfolder (for example, Patent Document 5 below). However, the rotary type interfolder has a drawback in that productivity is low because folding and cutting are simultaneously performed in the direction perpendicular to the processing direction.

US Patent No. 4052048 (Japanese Patent Publication No. 55-1215) JP 2006-240750 A JP 61-37668 A Japanese Patent Laid-Open No. 5-124770 Japanese Patent Application Laid-Open No. 2004-332034 Special table 2008-525103 gazette JP 2008-264564 A

Therefore, the present inventors have considered manufacturing tissue paper products to which a chemical solution has been applied by a manufacturing method using a multi-stand type interfolder that is more productive than a rotary interfolder.
However, when manufacturing by a manufacturing method using a multi-stand type interfolder, if a chemical solution application step is provided separately from the ply machine or the multi-stand type interfolder, it takes time and labor to transfer the raw material and a large equipment cost. There is a problem. Further, when the chemical solution application step is provided in the multi-stand type interfolder, it is necessary to separately provide a line for manufacturing a tissue paper product to which a chemical solution is applied and a line for manufacturing a tissue paper product to which no chemical solution is applied.

Therefore, the main problem of the present invention is that, in producing a secondary roll for tissue paper products used in a multi-stand type interfolder, a minor modification of existing equipment is sufficient without requiring a major equipment modification. In addition, while using a single multi-stand type interfolder, it is easy to switch between tissue paper products with chemicals and tissue paper products without chemicals. It is to provide a method for manufacturing a roll.
On the other hand, mixing of paper dust is suppressed, so that a chemical solution can be stably applied.

Means for solving the above problems and their effects are as follows.
[Invention of Claim 1]
Two tissue paper rolls for producing a plurality of secondary paper rolls for tissue paper products to be used by being set on each roll roll support portion of the multi-stand type interfolder continuously from the primary roll by a ply machine. A method for producing a second raw roll,
A laminating step in which a primary continuous sheet fed from a plurality of primary raw rolls made and wound by a papermaking facility is laminated along the continuous direction to form a laminated continuous sheet;
A chemical spraying process for applying a lotion chemical in a sprayed state to the laminated continuous sheet;
A contact embossing step for applying line-shaped contact embossing to prevent delamination on the laminated continuous sheet to which the chemical solution is applied ;
A slitting process for slitting the laminated continuous sheet to which the chemical solution is applied and the contact embossing is performed so as to be the product width of the tissue paper product or a multiple of the width,
A tissue paper product comprising: a winding step of winding each slit continuous sheet coaxially to form a plurality of secondary rolls having a product width of the tissue paper product or a multiple of the width of the tissue paper product. Manufacturing method for secondary raw fabric rolls.

(Function and effect)
In the present invention, a secondary raw roll for tissue paper products for continuously supplying a multi-stand type interfolder from a primary raw roll that has been made and wound is manufactured in a so-called ply machine. In addition, a chemical solution spraying step is incorporated to apply the chemical solution to the sheet.
Therefore, a minor modification of the existing ply machine is sufficient without requiring a large facility modification, and there is an advantage that a small investment facility cost is sufficient.
In addition, since the chemical spraying process is incorporated in the ply machine instead of providing the chemical spraying process in the multi-stand type interfolder, the tissue paper product to which the chemical liquid is applied and the tissue paper product to which the chemical liquid is not applied are provided. This switching is simply performed depending on whether or not a chemical solution is applied to the secondary raw roll for tissue paper products, and is excellent in productivity.

  In addition, when a chemical spraying process is provided in a multi-stand type interfolder, for example, it is conceivable to provide a large number of chemical spraying apparatuses for the laminated sheet layer, but this not only increases the equipment cost but also the installation space. In addition, it is difficult to ensure the accuracy, and it is practically impossible to accurately manage the applied amount in each device. Compared with this embodiment, the manufacturing method of the present invention provides advantages such as equipment cost and amount management.

On the other hand, in the case of a rotary type interfolder, its processing speed (sheet traveling speed) is low, so that a wide sheet (for example, 2) is used in a rotary cylinder type processing machine as described in JP-A-2008-245780. It is possible to apply a chemical in the process of supplying (about 3 m).
However, it is conceivable that the tissue paper production line using the multi-stand type interfolder is set to a high speed of, for example, 700 to 1400 m / min. In that case, it is necessary to perform the ply processing at the same speed in the ply machine in order to match the production speed. In such a high-speed ply machine, for example, when a chemical solution is applied by a method such as gravure, flexo, or roll coating, a large amount of paper dust is generated mainly due to friction between the sheet running at high speed and the coating roll. It mixes in the chemical solution and its concentration changes, resulting in variations in coating amount. On the other hand, in this invention, since chemical | medical solution is provided by spraying, it is freed from the trouble accompanying generation | occurrence | production of paper dust.

  Furthermore, when the chemical solution is applied by spraying according to the present invention, the fiber layer is not crimped between the rolls in the state of containing the chemical solution, as seen in systems such as gravure, flexo, and roll coating. Thus, a thicker or thicker tissue paper can be obtained.

[Invention of Claim 2 ]
The manufacturing method of the secondary raw material roll for tissue paper products of Claim 1 which has the smoothing process of smoothing with a calender between the said lamination process and the said chemical | medical solution spraying process.

[Invention of Claim 3 ]
The manufacturing method of the secondary raw material roll for tissue paper products of Claim 1 whose provision of the said chemical | medical solution is based on a nozzle type spray system.

[Invention of Claim 4 ]
The manufacturing method of the secondary raw material roll for tissue paper products of Claim 1 whose provision of the said chemical | medical solution is based on a rotor dampening spray system.

[Invention of Claim 5 ]
A large number of the secondary web rolls obtained by the claims of any one of the above-mentioned claims are prepared, and these are arranged along the line direction in a multi-stand type interfolder and fed out from each secondary web roll. A plurality of secondary continuous sheets are transported along the continuous direction, stacked while being folded in the transport process, and then a predetermined number of laminated sheets are cut to a predetermined length to form a tissue paper bundle, and this stack is stored in a storage box A method for producing tissue paper products, wherein the tissue paper products are housed in the inside.

  A number of secondary rolls for tissue paper products manufactured so as to have a product width of tissue paper products or multiple times the width of tissue paper products in the slit process in the manufacturing method according to the present invention are set in a multi-stand type interfolder at this latter stage. The Next, the secondary continuous sheet is fed out from the secondary raw roll set in the multi-stand type interfolder, sent to the folding mechanism, stacked while being folded, and then cut into a predetermined length and the tissue paper Make a bundle and store it in a storage box.

In this invention, a chemical | medical solution is provided with the spray system with respect to the lamination | stacking continuous sheet in the manufacturing method of the secondary raw material roll for tissue paper products. For this reason, when providing a chemical | medical solution provision process separately from a ply machine and a multi-stand type | system | group interfolder, the effort of the original fabric transfer and a great installation cost do not start.
In addition, when manufacturing tissue paper products that do not apply chemicals, it is only necessary to manufacture without applying chemicals in the process of manufacturing secondary rolls for tissue paper products. .

  In the manufacturing method of the secondary raw material roll for tissue paper products which concerns on this invention, it is preferable that a chemical | medical solution spraying process is performed after a lamination process and before a slit process. If the chemical spraying process is before the laminating process, it is necessary to provide equipment for spraying the chemical liquid on each primary continuous sheet. Since the chemical solution is sprayed and applied to the divided laminated continuous sheet, the chemical solution leaks from the slit, causing roll dirt and paper breakage. When the chemical spraying process is performed between the laminating process and the slitting process, it is sufficient to prepare equipment for spraying the chemical only on the laminated continuous sheet that is not divided by the slitting process. There is little, and there is little paper break and operation is stable.

In the manufacturing method of the secondary raw material roll for tissue paper products which concerns on this invention, it is preferable to have a smoothing process of smoothing by a calendar | calender etc. By having a smoothing process, the secondary raw material roll for tissue paper products with a smooth surface can be manufactured.
In addition, it is preferable that a smoothing process is performed between a lamination process and a chemical | medical solution spray provision process. If the smoothing step is before the laminating step and there are at least two facilities for smoothing the outer surface of the outer sheet of the laminated sheet, the same effect as the one smoothing step after the laminating step is obtained. In addition, when the same smoothness is obtained with two calenders on the surface of two sheets as outer layers, the paper thickness tends to be impaired.

In the manufacturing method of the secondary raw material roll for tissue paper products which concerns on this invention, it is preferable to have a contact embossing process which performs the line-shaped contact embossing which prevents delamination with respect to a lamination | stacking continuous sheet.
This contact embossing process is preferably performed before the slitting process. If the contact embossing process is after the slitting process, contact embossing will be applied to the laminated continuous sheet with slits in the product width, and there will be two locations (two lines) at the end of the laminated sheet having a continuous product width. Since contact embossing is performed, it becomes easier to cut the paper than contact embossing at the full width.

  In the method for producing a secondary paper roll for tissue paper products according to the present invention, any known spraying method such as a nozzle spraying method or a rotor dampening spraying method can be used as the chemical spraying method.

It is the schematic which shows the manufacturing equipment and manufacturing method of a primary web roll. It is the schematic which shows an example of a multi stand type inter folder, and has shown the state seen from the front. It is the schematic which shows an example of a multi stand type inter folder, and has shown the state seen from the side. It is the schematic which shows an example of a multi stand type inter folder, and has shown the state seen from the front. It is a longitudinal cross-sectional view of the folded tissue paper. (A) It is a figure which shows a mode that the tissue paper bundle is accommodated in the storage box. (B) It is a partially broken figure which shows a mode that the tissue paper accommodated in the storage box is taken out. It is a principal part expansion perspective view of the site | part regarding a folding plate. It is a principal part expansion perspective view which shows how to fold a secondary continuous sheet (tissue paper). It is a principal part expansion perspective view which shows how to fold a secondary continuous sheet (tissue paper). It is a principal part expansion perspective view which shows how to fold a secondary continuous sheet (tissue paper). It is the schematic which shows the manufacturing equipment and manufacturing method of a secondary web roll. It is a principal part enlarged view of the periphery of the chemical | medical solution spraying means shown in FIG. It is a figure which shows a mode that the contact embossing is provided to the lamination | stacking continuous sheet by the contact embossing means. It is a schematic block diagram which shows the other example of a chemical | medical solution spraying means. It is a schematic block diagram which shows the example of another chemical | medical solution spraying means. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is a schematic diagram which shows the structure of a lamination | stacking continuous sheet (tissue paper). (A) MD direction sectional drawing before chemical | medical solution spraying, (B) Top view before chemical | medical solution osmosis | permeation process, (C) II arrow directional view. It is a schematic diagram which shows the surface uneven structure of a lamination | stacking continuous sheet (tissue paper). (A) Before chemical solution spraying, (B) After chemical solution spraying. It is a schematic diagram which shows a chemical | medical solution penetration process. It is a figure which shows the measuring method of the MMD value of tissue paper.

Next, an embodiment of the present invention will be described. In the figure, the arrow HD indicates the horizontal direction, and the arrow LD indicates the vertical direction.
[Manufacture of primary rolls]
An example of the manufacturing method of a primary fabric roll is demonstrated referring FIG.
As shown in FIG. 1, the wet paper W that has passed through the wire part is placed on the bottom felt 111 and transferred, and thereafter, sandwiched between the top felt 110 and the bottom felt 111, between the top roll 112 and the bottom roll 113. Passed and squeezed. Thereafter, the wet paper web W squeezed is attached to the surface of the Yankee dryer 115 via the touch roll 116 while being placed on the top felt 110. Then, the wet paper W is dried by the Yankee dryer 115, peeled off by the doctor blade 117, and then wound up to be a primary raw roll JR.
In this papermaking, for example, dispersants, dry paper strength enhancers, wet paper strength enhancers, softeners, release agents, adhesives, pH adjusters such as caustic soda, antifoaming agents, preservatives, slime control agents, dyes , Etc. can be added as appropriate chemicals.
In the method of manufacturing the primary raw roll, the smoothing process can be performed by the calendar means 118 after being peeled off by the doctor blade 117.

[Manufacture of secondary rolls for tissue paper products]
A plurality of secondary web rolls for tissue paper products are continuously produced from the primary web roll JR produced in the above example. For example, as shown in FIG. 11, the production facility X1 (ply machine X1) for the secondary paper roll for tissue paper products can set at least two or more primary raw material rolls JR manufactured in the above example. A primary continuous sheet (S11, S12 in the illustrated example) fed from the primary raw roll JR is laminated along the continuous direction to form a laminated continuous sheet S2 (plying step). is doing.

  A pair of chemical solution spraying means 53 for spraying a chemical solution onto the laminated continuous sheet S <b> 2 flowing from the ply means 51 is provided at the subsequent stage of the ply means 51. The slit means 55 (slit process) which consists of a plurality of cutters and slits the laminated continuous sheet S2 transferred from the chemical spray means 53 so as to have a product width of tissue paper products or a multiple of the width of the tissue paper product is arranged. ing. Then, at the subsequent stage of the slit means 55, the laminated continuous sheet S2 slit by the slit means 55 is coaxially wound to form a plurality of secondary raw rolls R having a product width of tissue paper products or a multiple of the width. Winding means 56 is provided. Here, the winding means 56 has two winding drums 56A for guiding each slit continuous sheet S2 to the secondary raw roll R, and these two winding drums 56A are secondary. The laminated continuous sheet S2 is guided in contact with the outer peripheral surface of the raw roll R.

  In the production of the secondary raw material roll for tissue paper products according to this embodiment, the processing speed (also the traveling speed of the sheet in chemical spray application) is 100 to 1100 m / min, preferably 350 to 1050 m / min. More preferably, it is 450 to 1000 m / min. If it is less than 100 m / min, the productivity is low. On the other hand, if it exceeds 1100 m / min, there is a possibility that the frequency of cutting the laminated continuous sheet S2 is increased.

[Processing with multi-stand type inter folder]
A large number of secondary rolls R for tissue paper products thus obtained are set in a multi-stand type interfolder in the line direction (for example, half the number of sets of products), and the secondary rolls are set. From R, the secondary continuous sheet is fed out and transferred along the continuous direction, and a tissue paper bundle is manufactured by stacking while folding in the transfer process, and then a predetermined number of laminated sheets are cut to a predetermined length. A tissue paper product is manufactured by forming a tissue paper bundle and storing this stack in a storage box.

Hereinafter, an example of the multi-stand type interfolder and the packaging form will be described.
2 and 3 show an example of a multi-stand type interfolder. Reference numeral 2 in the figure denotes secondary raw rolls R, R... Set on a secondary raw roll support portion (not shown) of the multi-stand type interfolder 1. The secondary raw rolls R, R... Are set side by side in a direction (the horizontal direction in FIG. 2 and the front-to-back direction in FIG. 3) perpendicular to the illustrated plane. Each secondary roll R is slit in the tissue paper product width in the manufacturing process of the above-described secondary roll for tissue paper products. Rolled up and set.

  The continuous belt-like secondary continuous sheets 3 </ b> A and 3 </ b> B unwound from the secondary raw roll R are guided by guide means such as guide rollers G <b> 1 and G <b> 1 and sent to the folding mechanism unit 20. Moreover, the folding mechanism part 20 is provided with the folding plate group 21 in which the required number of folding plates P, P ... are arranged in parallel as shown in FIG. For each folded plate P, guide rollers G2, G2 and guide round bar members G3, G3 for guiding a pair of continuous secondary continuous sheets 3A or 3B are respectively provided at appropriate positions. Further, below the folded plates P, P..., A conveyor 22 is provided that receives and conveys the laminated band 30 that is stacked while being folded.

  A folding mechanism using this type of folded plates P, P... Is a known mechanism, for example, from US Pat. As shown in FIG. 5, this type of folding mechanism folds each continuous secondary continuous sheet 3A, 3B... In the Z-shape and is adjacent to the adjacent secondary continuous sheet 3A, 3B. Stack the ends together.

  FIGS. 7 to 10 show in detail the portions of the folding mechanism 20 that are particularly related to the folded plate P. FIG. In the folding mechanism unit 20, a pair of continuous secondary continuous sheets 3A and 3B are guided for each folded plate P. At this time, the continuous secondary continuous sheets 3A and 3B are guided by the guide round bar members G3 and G3 while being shifted in position so that the side end portions do not overlap each other.

  A continuous secondary continuous sheet that is overlapped on the lower side when guided by the folded plate P is defined as a first continuous secondary continuous sheet 3A, and a continuous secondary continuous sheet that is overlapped on the upper side is a second continuous sheet. As shown in FIGS. 5 and 8, these continuous secondary sheets 3A and 3B are second continuous secondary sheets of the first continuous secondary continuous sheet 3A. The side end e1 that does not overlap the sheet 3B is folded back to the upper side of the second continuous secondary continuous sheet 3B by the side plate P1 of the folded plate P, and as shown in FIGS. The side end e2 of the continuous secondary continuous sheet 3B that does not overlap with the first continuous secondary continuous sheet 3A is folded downward so as to be drawn under the folded plate P from the slit P2 of the folded plate P. . At this time, as shown in FIGS. 5 and 10, the side end portion e3 (e1) of the continuous secondary continuous sheet 3A stacked while being folded in the upstream folded plate P is second from the slit P2 of the folded plate P. Are guided between the folded portions of the continuous secondary sheet 3B. In this way, each continuous secondary continuous sheet 3A, 3B... Is folded into a Z-shape and the side edges of adjacent continuous secondary continuous sheets 3A and 3B are crossed together. In some cases, when the top tissue paper is pulled out, the side edge of the next tissue paper is pulled out.

  As shown in FIG. 2, the laminated band 30 obtained by the multi-stand type interfolder 1 as described above is cut (cut) at a predetermined interval in the flow direction FL by the subsequent cutting means 41, and the tissue is cut. The tissue paper bundle 30a is stored in the storage box B in the subsequent equipment as shown in FIG. 6A. In the multi-stand type interfolder 1 as described above, the paper direction of the laminated strip 30 is the vertical direction (MD direction) along the flow direction FL, and the horizontal direction along the direction orthogonal to the flow direction. Direction (CD direction). For this reason, the direction of the paper of the tissue paper constituting the tissue paper bundle 30a obtained by cutting the laminated band 30 into a predetermined length is the extension of the folded portion of the tissue paper as shown in FIG. The vertical direction (MD direction) is along the existing direction, and the horizontal direction (CD direction) is along the direction orthogonal to the extending direction of the folded portion of the tissue paper.

FIG. 6B shows an example of a product in which the tissue paper bundle 30a is stored in the storage box B. A perforation M is provided on the upper surface of the storage box B, and a part of the upper surface of the storage box B is broken by the perforation M so that the upper surface of the storage box B is opened. The opening is covered with a film F having a slit at the center, and the tissue paper T can be taken out through the slit provided in the film F.
By the way, as described above, the direction of the paper of the tissue paper constituting the tissue paper bundle 30a is the horizontal direction (CD direction) along the direction orthogonal to the extending direction of the folded portion of the tissue paper. As shown in (b), when pulling out the tissue paper T from the storage box B, the pulling direction is along the lateral direction (CD direction) of the tissue paper T.

(Calendar means)
By the way, one or more calendar means 52 for calendering the laminated continuous sheet S2 can be provided in the production facility X1 for the secondary raw material roll for tissue paper products described above.
The type of calendar in the calendar means 52 is not particularly limited, but is preferably a soft calendar or a chilled calendar for the purpose of improving the smoothness of the surface and adjusting the paper thickness. The soft calendar is a calendar using a roll coated with an elastic material such as urethane rubber, and the chilled calendar is a calendar made of a metal roll.

The number of calendar means 52 can be changed as appropriate. If there is a plurality of installations, it has the advantage that it can be sufficiently smoothed even if the processing speed is high.
When two or more calendar means 52 are installed, they can be arranged side by side in the horizontal direction, the up-down direction, or the diagonal direction, and these installation directions may be combined. When arranged side by side in the horizontal direction, the holding angle becomes smaller, so the processing speed can be increased, and when arranged side by side in the vertical direction, the installation space can be reduced. Here, the holding angle means an angle while the sheet is in contact as viewed from the roll axis center (a part of a circular arc of a cross section perpendicular to the axis) (hereinafter the same).
Paper making is also performed as control factors such as calendar type, nip line pressure, and number of nips in the calendar processing conditions, and these control factors are preferably changed as appropriate depending on the quality of tissue paper to be obtained, that is, paper thickness and surface properties.
Further, the installation position of the calendar means 52 is not particularly limited. However, it is located after the ply means 51 and before the chemical spray means 53, after the chemical spray means 53 and before the contact emboss means 54. Can do.

(Contact embossing means)
The production facility X1 for the secondary paper roll for tissue paper products can be provided with contact embossing means 54 for imparting contact embossing to the laminated continuous sheet S2.

  Here, as shown in FIG. 13, in the contact embossing means 54, a receiving roll 54B, which is a metal roll or an elastic roll, and a metal, hard roller 54A having a fine convex portion 54C on the surface have a predetermined pressure. The outer peripheral surfaces are in contact with each other, and are installed so as to be rotatable. Then, with respect to the portion corresponding to the center in the width direction of the tissue paper product in the laminated continuous sheet S2, the laminated continuous sheet S2 is conveyed while sandwiching the laminated continuous sheet S2 between the convex portion 54C and the receiving roll 54B. Thus, line-shaped contact embossing CE for preventing delamination along the continuous direction of the laminated continuous sheet S2 is applied to the laminated continuous sheet S2.

  In addition, the winding means 56 mentioned above winds up the lamination | stacking continuous sheet S2 by making the surface on the side facing the roller 54A which performs this contact embossing CE into an outer peripheral side.

By providing the contact embossing CE in this manner, delamination of the laminated continuous sheet S2 formed by laminating a plurality of primary continuous sheets (S11 and S12 in the illustrated example) is prevented. In addition, it is preferable that the contact embossing CE is formed so as to be positioned on both sides in the width direction of the tissue paper product so that the end portion of the tissue paper product is hardly delaminated.
The location where the contact embossing means 54 is installed is not particularly limited, but it is a stage subsequent to the chemical solution applying means 53 and preceding the slit means 55, and a stage subsequent to the calendar means 52 and preceding the chemical solution applying means 53. But you can. That is, it suffices if it is at a position after the calendar means 52 and before the slit means 55.

  When the contact embossing means 54 is applied by the contact embossing means 54, the contact embossing CE is applied within 0.3 to 2.5 seconds, preferably within 0.3 to 1.0 seconds after the chemical solution is applied to the laminated continuous sheet S2. It is also proposed to give If the time is less than 0.3 seconds, the chemical solution is not sufficiently absorbed by the base paper, so that the chemical solution adheres to the receiving roll 54B and the roller 54A and the paper is cut off, or dirt is attached to the receiving roll 54B and the roller 54A. If it exceeds 2.5 seconds, the laminated continuous sheet S2 to which the chemical solution has been applied stretches, so that subsequent process wrinkles are less likely to occur, making it difficult to obtain a bulky tissue paper product. In addition, when the laminated continuous sheet S2 is fully stretched, there is no stretch that can cope with draw fluctuations, and the tensile strength is reduced due to moisture absorption and water absorption.

Further, in this joining process, in the present embodiment, a metal and hard roller 54A having a fine convex portion 54C on the surface is used as a roller, but a line-shaped joint that prevents delamination from the laminated continuous sheet S2. For example, instead of the roller 54A, a roller having a fine needle-like member on the surface can be used as the roller.
Furthermore, the means for joining is not limited to the above example, and the tip shape of the convex portion may be a point, square, rectangular, circular, elliptical shape, etc. A tip having a slender linear shape or a thin and slanting linear shape may be used as the roller.

  On the other hand, the arrangement of the protrusions may be equally spaced, but may not be staggered or evenly spaced. In addition to arranging the protrusions in a row and providing contact embossing continuously, It is also conceivable to arrange the parts in two or more rows. Then, a plurality of groups in which convex portions are arranged so as to provide a plurality of rows of contact embossing closely may be arranged to provide a plurality of contact embossing groups. In addition, as a joining process, you may join by other means, such as an ultrasonic wave, besides joining by applying a pressure mechanically as mentioned above.

(Medication spraying means)
In the manufacture of the secondary raw material roll for tissue paper products according to the present embodiment, it is applied to the laminated continuous sheet S2 while spraying a chemical solution.
Although it does not specifically limit as the chemical | medical solution spraying means 53, In addition to the case of a nozzle type spray system, you may use a rotor dampening spray system.

  Among these, the types of spray nozzles in the nozzle spray device include an empty conical nozzle that sprays in an annular shape, a full conical nozzle that sprays in a circular shape, a full pyramid that sprays in a square shape, a full nozzle and a fan Type nozzles, etc., so that the chemical solution is sprayed uniformly in the width direction of the sheet, the nozzle diameter, the number of nozzles, the nozzle arrangement pattern, the number of nozzles, or the spray distance, spray pressure, spray angle, and spray The concentration and viscosity of the liquid can be appropriately selected and used.

  Moreover, about the method of atomizing in a nozzle type spraying apparatus, it can select and use two types, a 1 fluid system or a 2 fluid system. Of these, the one-fluid spraying method applies pressure directly to the chemical liquid to be sprayed using compressed air and sprays mist droplets from the nozzle, or blows air into the nozzle from a fine hole opened on the side of the nozzle near the jet outlet. This is a method of sucking and spraying mist. In addition, the two-fluid spraying method is mixed with a liquid sprayed with compressed air inside the nozzle, an internal mixing type that atomizes, mixed with a liquid sprayed with compressed air outside the nozzle, an external mixing type that atomizes, and atomized Examples include a collision type system in which mist droplet particles collide with each other to further homogenize and atomize the mist droplet particles.

On the other hand, the rotor dampening coating device is a device that sends out the liquid to be sprayed onto a disk that rotates at high speed, and makes the liquid atomized by the centrifugal force of the disk, and controls the particle size of the droplets by changing the rotational speed of the disk. The amount of spray liquid (applied amount) is controlled by changing the amount of liquid fed onto the disk. Is. Rotor dampening applicator can apply a small amount of spray liquid evenly on the surface of pigment coated paper while suppressing spraying of mist droplets, and it is easy to adjust the spraying speed and the particle size of mist. There are certain advantages.
In order to spray the chemical solution uniformly on the sheet surface, the atomized particle size of the atomized chemical solution is preferably as small as possible. However, if the mist droplets become too fine, the mist droplets will be swept away by the rebound of the sprayed air or the air accompanying the sheet surface, and the mist droplets will not easily adhere to the sheet surface, especially when the traveling speed of the sheet is high. Become. For this reason, in the spray application system, the spray distance, spray pressure, spray angle, spray speed, and in the case of the two-fluid system, the mixing ratio of the chemical liquid for spraying and the compressed air, the concentration and viscosity of the chemical liquid, etc. It can be adjusted appropriately to adjust the particle size to suit the application conditions. If the influence of the accompanying air is large during spraying, installation of a suction device or baffle plate (rectifying plate) to remove the accompanying air, Further, a charged electrode (electrostatic spraying method) or the like may be added to apply high voltage to the tip of the spray nozzle to charge the mist droplet particles to improve the appropriate adhesion of the mist to the pigment coated paper.
The mist droplets floating as mist without being applied to the sheet surface can be sucked and collected and sprayed again.

  FIG. 12 shows an example of a nozzle type spray method, particularly a two-fluid type chemical spray device 53A (53B). This device 53A has a chemical liquid passage 53a at its center and an air passage 53b around it, and atomizes the chemical liquid ejected from the tip of the chemical liquid passage 53a with the air discharged from the air passage 53b. The chemical solution is sprayed in a substantially conical shape. Reference numeral 53c denotes an external protective casing that protects the nozzle from paper dust and the like, and can clean the nozzle with air that passes through the purge air passage 53d if necessary. This kind of chemical spraying device 53A (53B) can be provided at one or more intervals in the width direction of the sheet.

  As described above, the mist droplets are washed away by the rebound of the sprayed chemical liquid or the air accompanying the surface of the sheet, and particularly when the traveling speed of the sheet is high, the mist droplet is difficult to adhere to the sheet surface. Therefore, if necessary, as shown in FIG.

When the sprayed chemical liquid from the chemical liquid spraying means (spray nozzle) is surrounded by the air sprayed from the air supply path 53f formed in the casing 53e from around the chemical liquid spraying means (spray nozzle) 53, the chemical liquid is suitably applied to the sheet S2. be able to.

  FIG. 15 shows an example of a rotor dampening coating device 53X. In this case, a rotating rotor 53o is provided in a cover housing chamber 53p provided as necessary, and a chemical solution is sprayed onto the sheet S2 from an ejection port 53q of the rotating rotor 53o.

  By the way, it is preferable that the means (calendar means 52 and contact embossing means 54 in the example of FIG. 11) arranged before and after the chemical solution spraying means 53 are arranged close to each other. By doing so, when manufacturing a tissue paper product to which no chemical liquid is applied, the laminated continuous sheet S2 is directly transferred from the front stage to the rear stage of the chemical liquid spraying means 53, and the laminated continuous sheet S2 is not passed through the chemical liquid spraying means 53. Since it only has to pass through, it is possible to easily switch the presence or absence of chemical application. For example, in the manufacturing equipment X1 for the secondary paper roll for tissue paper products shown in FIG. 11, when manufacturing the tissue paper products to which no chemical solution is applied, as shown by the two-dot chain line in FIG. It is only necessary to transfer directly from the means 52 to the contact embossing means 54 and to flow the laminated continuous sheet S2 without passing through the chemical solution spraying means 53.

When imparting chemical on both surfaces of the laminated continuous sheet S2, chemical application amount of the double-sided total is a 1.5~5.0g / m ^2, is preferably a 2.0 to 4.5 g / m ^2, More preferably, it is 2.5 to 4.0 g / m ² . If it exceeds 5.0 g / m ² , the paper may be cut due to a decrease in paper strength or elongation, winding may occur when winding with a winding drum, or the quality may be too sticky. . If it is less than 1.5 g / m ² , it will not be possible to feel the quality difference from the unassigned product such as smoothness and moist feeling.
In addition, when there is a difference in the application amount to both application surfaces, since both application surfaces are in contact with each other during the time (8 hours or more) from being stored in the ply original fabric to being folded after spray application, Gradually, the amounts of both chemicals are equalized, and the difference between the two sides becomes smaller.

When applying a chemical | medical solution only to the single side | surface of lamination | stacking continuous sheet S2, the application | coating surface of a chemical | medical solution is to the surface (surface at the side of primary continuous sheet S11) located in the outer side of the secondary original fabric roll R in lamination | stacking continuous sheet S2. Grant is good. In this way, there is a difference between the front and the back of the product, but it is difficult to cause winding slip. In this case, the applied amount is 1.5 to 5.0 g / m ² , preferably 2.0 to 4.5 g / m ² , more preferably 2.5 to 4.0 g / m ^2. .

  Moreover, when providing a difference in the crepe rate of each primary continuous sheet constituting the laminated continuous sheet S2, more chemical solution is applied to the primary continuous sheet side having the higher crepe rate (primary continuous sheet S11 side in the illustrated example). Is also proposed. For example, in the example shown in FIG. 11 and FIG. 20, out of the two chemical spraying means 53, the chemical spraying means 53B that directly applies the chemical liquid to the primary continuous sheet S11 is more than the other chemical spraying means 53A. The chemical solution shall be applied. In this case, the ratio of the applied amount of the chemicals on both sides is 100: 0 to 60:40, preferably 75:25 to 60:40.

  FIG. 20A is a cross-sectional view of the laminated continuous sheet S2 laminated on the two plies before applying the chemical solution (cross-sectional view cut in parallel with the MD direction). In applying the chemical solution to both surfaces of the laminated continuous sheet S2 laminated in two plies, a difference is provided in the amount of the chemical solution on both surfaces, and in the drawing, a large amount of chemical solution is applied to the primary continuous sheet S11 side. After the chemical solution is applied, before the laminated continuous sheet S2 is fully extended, the laminated layers are integrated by the contact embossing CE, and cut into the product width by the slit means 55 (FIG. 20B). Thereafter, the laminated continuous sheet S2 is taken up by the take-up means 56 and is left to stand for infiltration of the chemical solution. The primary continuous sheets S11 and S12 constituting the laminated continuous sheet S2 to which the chemical solution is applied by the chemical solution spraying means 53 mainly extend in the MD direction. At that time, the primary continuous sheet S11 to which more chemical solution is applied has a higher elongation rate than the other primary continuous sheet S12. Wrinkles occur on the surface of the extended primary continuous sheet S11 (FIG. 20C). A difference is also provided in the crepe rate of the laminated continuous sheet S2 to be laminated, and if a base paper having a high crepe rate is used for the primary continuous sheet S11, a difference may be caused in the elongation rate between the primary continuous sheet S11 and the primary continuous sheet S12. it can.

  In the example of FIG. 1, the crepe is formed by the difference between the dryer speed and the winding speed after the base paper is dried by the Yankee dryer 115 and then peeled off from the Yankee dryer 115 by the doctor blade 117. The shape of this crepe is adjusted by sticking the paper to the Yankee dryer 115, but since there is some variation in this sticking and the fiber raw material is not evenly distributed, There is some variation in the three-dimensional crepe shape. This variation becomes more prominent as the crepe rate increases.

  Along with the variation in the crepe, there is also a variation in the elongation when the chemical solution is applied, which is formed as a three-dimensional fine wave. This wave does not become apparent during the seasoning of the original fabric because tension is applied, but it is restored and becomes apparent after processing and cutting into a product. The greater the amount of chemical applied to the sheet, the greater the crepe, the greater the change in the crepe shape, the greater the corrugation of the sheet, and the smaller the amount of chemical applied to the sheet, the smaller the crepe, the smaller the crepe shape, The undulation is small. For this reason, a bulky effect can be synergized by changing not only the applied amount but also the crepe rate.

  In addition, regarding the quality, when the primary continuous sheets S11 and S12 having different crepe rates are laminated to produce a product, the tissue paper, which is a product, has a different bulk feeling unless the chemical solution is applied (FIG. 21 ( A)). However, by applying more chemical solution to the primary continuous sheet S11 having a larger surface irregularity (high crepe rate), the primary continuous sheet S11 extends at a higher elongation rate than the primary continuous sheet S12. Since it is fixed in parallel with the MD direction (not shown), the primary continuous sheet S11 corrugates and the bulk of the laminated sheet increases. (FIG. 21B)).

  By providing a difference in the amount of chemical applied, there is a concern that the touch on both sides of the product and the feeling of use will be different, but in the state of the roll before subjecting the secondary roll R to the next step (folding etc.) Since the surfaces of the primary continuous sheets S11 and S12 having different chemical application amounts are kept opposite to each other by being left standing (chemical solution infiltration process, FIG. 22), the chemical components between the continuous sheets are transferred little by little ( The difference is gradually reduced during seasoning. In addition, the white arrow in FIG. 22 shows the osmosis | permeation direction of a chemical | medical solution component.

(Medical solution)
About the chemical | medical solution to provide, a viscosity shall be 1-700 mPa * s at 40 degreeC from a viewpoint of performing high-speed processing. More preferably, it is set to 50 to 400 mPa · s (40 ° C.). If it is less than 1 mPa · s, the chemical solution is likely to be scattered on rolls such as anilox roll, printing plate roll, and gravure roll, and conversely if it is more than 700 mPa · s, it is difficult to control the amount applied to each roll or continuous sheet. Ingredients include 70-90% polyol, 1-15% moisture, and 0.01-22% functional chemicals.
The polyol includes polyhydric alcohols such as glycerin, diglycerin, propylene glycol, 1,3-butylene glycol, polyethylene glycol, and derivatives thereof, and saccharides such as sorbitol, glucose, xylitol, maltose, maltitol, mannitol, and trehalose.
Functional agents include softeners, surfactants, inorganic and organic fine particle powders, oily components, and the like. Softeners and surfactants have the effect of imparting flexibility to the tissue and smoothing the surface, and anionic surfactants, cationic surfactants and zwitterionic surfactants are applied. Inorganic and organic fine particle powders have a smooth surface. The oil component has a function of improving lubricity, and higher alcohols such as liquid paraffin, cetanol, stearyl alcohol, and oleyl alcohol can be used.
In addition, as a functional agent, one of a hydrophilic polymer gelling agent, collagen, hydrolyzed collagen, hydrolyzed keratin, hydrolyzed silk, hyaluronic acid or a salt thereof, ceramide, etc. A moisturizing agent such as any combination can be added.
Deodorants such as flavors, emollients such as various natural extracts, vitamins, emulsifiers that stabilize compounding ingredients, antifoaming agents, antifungal agents, organic acids, etc. An agent can be appropriately blended. Furthermore, you may contain the antioxidant of vitamin C and vitamin E.
Among the above components, it is preferable to use a polyhydric alcohol such as glycerin or propylene glycol as a main component in order to stabilize the viscosity and applied amount of the chemical.
The temperature at the time of chemical solution application is preferably 30 ° C to 60 ° C, preferably 35 ° C to 55 ° C.

(Primary continuous sheet)
The raw material pulp of primary continuous sheet S11, S12 is not specifically limited, According to the use of tissue paper products, an appropriate raw material pulp can be selected and used. As raw material pulp, for example, wood pulp, non-wood pulp, synthetic pulp, waste paper pulp, and the like, more specifically, groundwood pulp (GP), stone ground pulp (SGP), refiner ground pulp (RGP), pressure type Mechanical pulp (MP), chemical mechanical pulp (CGP), semi-chemical pulp (such as ground pulp (PGW), thermomechanical pulp (TMP), chemithermomechanical pulp (CTMP), bleach chemithermomechanical pulp (BCTMP) Chemical pulp (SCP), kraft pulp (KP) such as hardwood bleached kraft pulp (LBKP), softwood bleached kraft pulp (NBKP), soda pulp (AP), sulfite pulp (SP), dissolved pulp (DP), etc. CP), nylon, rayon, polyester, polyvinyl alcohol Synthetic pulp made from (PVA) etc., deinked pulp (DIP), waste paper pulp such as waist pulp (WP), waste pulp (TP), cotton, flax, hemp, jute, manila hemp, ramie etc. One or several kinds of rag pulp, straw pulp, esparto pulp, bagasse pulp, bamboo pulp, kenaf pulp, and other auxiliary pulps such as bast pulp can be appropriately selected and used.

  In particular, the raw material pulp is preferably a blend of NBKP and LBKP. Waste paper pulp may be blended as appropriate, but in terms of texture and the like, it may be composed only of NBKP and LBKP, and the blending ratio (JIS P 8120) in that case is NBKP: LBKP = 20: 80-80: 20 is good, and NBKP: LBKP = 30: 70-60: 40 is particularly desirable.

The primary continuous sheets S11 and S12 have a basis weight according to JIS P 8124 of 10 to 25 g / m ² , preferably 12 to 20 g / m ^2, and more preferably 13 to 16 g / m ² . When the basis weight is less than 10 g / m ² , it is preferable in terms of softness, but an appropriate strength cannot be ensured. On the other hand, when the basis weight exceeds 25 g / m ² , it becomes too hard and the touch is deteriorated.
Further, the paper thickness (measured with a Peacock manufactured by Ozaki Seisakusho) is 80 to 250 μm, preferably 100 to 200 μm, more preferably 130 to 180 μm per ply.

The primary continuous sheets S11 and S12 preferably have a crepe rate of 10 to 30%, more preferably 12 to 25%, and particularly preferably 13 to 20%. When the crepe rate is less than 10%, it becomes a tissue paper product that is easy to break during processing and has little stretch and is not stiff. On the other hand, if the crepe rate is more than 30%, it is difficult to control the tension of the sheet during processing, and the paper tends to be cut off.
Here, the crepe rate is expressed by the following equation.
Crepe rate: {(peripheral speed of the dryer during papermaking)-(peripheral speed of the reel)} / (peripheral speed of the dryer during papermaking) × 100.

  The primary continuous sheets S11 and S12 have a dry tensile strength (hereinafter also referred to as dry paper strength) specified in JIS P 8113 of 2 to 200 p-200 cN / 25 mm, preferably 250 to 600 cN / 25 mm. The lateral direction is preferably 300 to 600 cN / 25 mm, and the lateral direction is 100 to 300 cN / 25 mm, preferably 130 to 270 cN / 25 mm, particularly preferably 150 to 250 cN / 25 mm. If the dry tensile strength of the base paper is too low, troubles such as paper breakage and elongation at the time of production and use are likely to occur, and if it is too high, the touch becomes stiff when used.

  These paper strengths can be adjusted by a known method. For example, a dry paper strength enhancer is internally added (added to a stage before the dryer part, for example, pulp slurry), and the freeness of pulp is reduced (for example, about 30 to 40 ml). A method of increasing (for example, 50% or more) the NBKP compounding ratio can be appropriately combined.

  As the dry paper strength agent, starch, polyacrylamide, CMC (carboxymethyl cellulose) or a salt thereof such as sodium carboxymethyl cellulose, carboxymethyl cellulose calcium, carboxymethyl cellulose zinc and the like can be used. As the wet paper strength agent, polyamide polyamine epichlorohydrin resin, urea resin, acid colloid / melamine resin, thermal crosslinkability imparting PAM and the like can be used. When the wet paper strength agent is internally added, the addition amount can be about 5 to 20 kg / t in weight ratio to the pulp slurry. In addition, when the dry paper strength agent is internally added, the addition amount can be about 0.5 to 1.0 kg / t by weight ratio to the pulp slurry.

Next, the other form of the manufacturing equipment and manufacturing method of the secondary raw material roll for tissue paper products is demonstrated.
[Production equipment and production method for secondary roll for second tissue paper product]
For example, as shown in FIG. 16, tension control means 57 for controlling the tension of the laminated continuous sheet S2 may be provided between the chemical spray means 53 and the contact embossing means 54. The tension control means 57 is formed of a cylindrical roll, and can be moved up and down in accordance with the bending state of the laminated continuous sheet S2.
In addition, when the tension control means 57 is provided as in the form shown in FIG. In this case, in the calendar means 52 arranged at the subsequent stage of the tension control means 57, when applying the chemical solution, the calendar roll 52A is separated from the receiving roll 52B by a distance equal to or greater than the paper thickness of the laminated continuous sheet S2 to form the laminated continuous sheet S2. On the other hand, it is also proposed to let the user pass through without performing the smoothing process.

[ Reference form of manufacturing equipment and manufacturing method for secondary roll for tissue paper products ]
As shown in FIG. 17, the contact embossing means 54 can be installed between the calendar means 52 and the chemical solution spraying means 53. The manufacturing method of the secondary raw material roll for tissue paper products using such manufacturing equipment X3 of the secondary raw material roll for tissue paper products is as follows.
As shown in FIG. 17, in the manufacturing method of the secondary paper roll for tissue paper products which concerns on this form, the primary continuous sheet (S11, S12 in the example of illustration) which is drawn | fed out from the several primary raw material roll by the ply means 51. Are laminated along the continuous direction to form a laminated continuous sheet S2 (lamination step), and the laminated continuous sheet S2 is smoothed by a pair of calendar means 52 (smoothing step), and the smoothed lamination is performed. Contact embossing is applied to the continuous sheet S2 by the contact embossing means 54 (contact embossing process), and a chemical solution is applied to the laminated continuous sheet S2 provided with the contact embossing by the pair of chemical liquid spraying means 53 (chemical solution applying process) ), And the slitting means 55 causes the laminated continuous sheet S2 to have a product width of the tissue paper product or a multiple of the product width. Next, the laminated continuous sheet S2 slit in the slitting process is wound up coaxially to wind up the product width of the tissue paper product or a plurality of secondary raw rolls R having a multiple of the width. Formed by means 56.
In addition, when manufacturing the tissue paper product to which the chemical solution is not applied at the manufacturing facility X3 of the secondary paper roll for tissue paper product, the laminated continuous sheet S2 is removed from the contact embossing means 54 as shown by a two-dot chain line in FIG. It is only necessary to directly transfer to the slit means 55 and flow the laminated continuous sheet S2 without passing through the chemical spray means 53.

[Production equipment and production method for secondary roll for third tissue paper product]
As shown in FIG. 18, in the chemical application step 53, the contact embossing means 54 is installed between the ply means 51 and the calendar means 52, and the chemical spraying means 53 and the contact embossing means 54 are arranged with the calendar means 52 as one stage. It can also be installed in between. The manufacturing method of the secondary raw material roll for tissue paper products using such manufacturing equipment X4 of the secondary raw material roll for tissue paper products is as follows.
As shown in FIG. 18, in the manufacturing method of the secondary paper roll for tissue paper products which concerns on this form, the primary continuous sheet (S11, S12 in the example of illustration) which is drawn | fed out from several primary raw material rolls by the ply means 51. Are laminated in the continuous direction to form a laminated continuous sheet S2 (laminating step), and a chemical solution is applied by a pair of chemical spraying means 53 arranged in parallel in the vertical direction with respect to the laminated continuous sheet S2 (chemical solution applying step) ), Smoothing process is performed by a pair of calendar means 52 (smoothing process), contact embossing is applied to the smoothed laminated continuous sheet S2 by the contact embossing means 54 (contact embossing process), and the slit means 55 The laminated continuous sheet S2 is slit so as to have a product width of tissue paper products or a multiple of the width (slit process), and then A laminated continuous sheet S2, which is slit in slit step is wound coaxially a plurality of secondary master roll R of product width or a multiple width of tissue paper products are formed by the winding means 56.
In addition, when manufacturing the tissue paper product to which the chemical solution is not applied at the manufacturing facility X4 of the secondary paper roll for tissue paper product, the laminated continuous sheet S2 is contacted from the calendar means 52 as shown by a two-dot chain line in FIG. It is only necessary to transfer to the embossing means 54 and flow the laminated continuous sheet S2 without passing through the chemical spray means 53.

[ Fourth Raw Material Roll Production Equipment and Method for Tissue Paper Products]
As shown in FIG. 19, a pair of calendar means 52 can be arranged along the vertical direction, and a pair of chemical spraying means 53 can be arranged along the vertical direction.
The manufacturing method of the secondary raw material roll for tissue paper products using such manufacturing equipment X5 of the secondary raw material roll for tissue paper products is as follows.
As shown in FIG. 19, in the manufacturing method of the secondary raw material roll for tissue paper products which concerns on this form, the primary continuous sheet (S11, S12 in the example of illustration) which is drawn | fed out from a several primary raw material roll by the ply means 51. Is laminated along the continuous direction to form a laminated continuous sheet S2 (lamination step), and the laminated continuous sheet S2 is smoothed by a pair of calendar means 52 (smoothing step), and the laminated continuous sheet S2 Then, a chemical solution is applied by a pair of chemical spraying means 53 (chemical solution applying process), contact embossing is applied by the contact embossing means 54 to the laminated continuous sheet S2 (contact embossing process), and the laminated continuous sheet S2 is applied by the slit means 55. Slit to make the product width of tissue paper product or multiple times the width (slit process), then slit work In a plurality of secondary master roll R of the slit has been product width or a multiple width of wound to tissue paper products layered continuous sheet S2 coaxial, formed by winding means 56.
In addition, when manufacturing the tissue paper product to which no chemical solution is applied at the manufacturing facility X5 for the secondary paper roll for tissue paper product, the laminated continuous sheet S2 is contacted from the calendar means 52 as shown by a two-dot chain line in FIG. It is only necessary to transfer directly to the embossing means 54 and flow the laminated continuous sheet S2 without passing through the chemical spraying means 53.

  Next, a tissue paper product (Example) is manufactured with the above-mentioned multi-stand type interfolder using the secondary material roll manufactured by the manufacturing method of the secondary material roll X1 for tissue paper products shown in FIG. The comparison was made with a reference example and a comparative example using the flexo transfer method.

<Base paper>
In Examples 1-6, the pulp which comprises a base paper was NBKP30% and LBKP70%. Further, a crepe rate of 19% was used. About Examples 1-6, the chemical | medical solution of the same composition as the comparative example 2 was prepared so that a viscosity might be set to 110 mPa * s (40 degreeC).
Examples 1-3 are based on the spray form by the rotor dampening system shown in FIG. 15, and Examples 4-6 are based on the spray form by the nozzle system shown in FIG.
The comparative examples in Table 2 are all commercially available products, Comparative Example 1 is a non-humidifying general-purpose tissue paper marketed by the applicant, and Comparative Examples 2 to 2 are moisturizing lotion type tissue papers. Comparative Example 2 is a lotion type tissue paper marketed by the applicant, but since Comparative Examples 3 and 4 are commercial products of other companies, they contain unknown contents.

Each parameter shown in Table 1 and Table 2 is as follows.
Rice tsubo (basis weight): Measured according to JIS P 8124 (1998). In the case of a two-ply tissue product, the average weight of a 2-ply sheet is listed.
Paper thickness: Measured using a dial thickness gauge (thickness measuring instrument) “PEACOCK G type” (manufactured by Ozaki Seisakusho) under the conditions of JIS P 8111 (1998). Specifically, confirm that there is no dust, dust, etc. between the plunger and the measuring table, lower the plunger on the measuring table, move the memory of the dial thickness gauge to adjust the zero point, and then Raise the plunger, place the sample on the test bench, slowly lower the plunger and read the gauge at that time. At this time, only the plunger is placed. The terminal of the plunger is made of metal so that a circular plane having a diameter of 10 mm is perpendicular to the plane of the paper, and the load at the time of measuring the paper thickness is about 70 gf. The paper thickness is an average value obtained by performing measurement 10 times.
Product density: The product density is the paper (2 ply) of tissue paper by “PEACOCK G type”, which is a doubled value (C) of the tissue paper product tsubo conditioned under JIS P 8111 conditions. The value is divided by the thickness (D), and the unit is expressed in g / cm ³ and three decimal places.
Dry tensile strength: Measured according to the tensile test method of JIS P 8113 (1998).
Wet tensile strength: Measured according to JIS P 8135 (1998).
Elongation rate: Measured using Minebea Co., Ltd. “Universal Tensile and Compression Tester TG-200N”.
Softness: Measured based on the handle ohm method according to JIS L1096 E method. However, the test piece was 100 mm × 100 mm in size, and the clearance was 5 mm. The measurement was performed 5 times each in the vertical direction and the horizontal direction with 1 ply, and the average value of all 10 times was defined as one decimal point and expressed in units of cN / 100 mm.
Coefficient of static friction: Measured by the following method according to JIS P 8147 (1998). Stick the tissue paper peeled on one ply to the acrylic plate so that the front side of the paper is on the outside. Wrap tissue paper around a 100 g weight with 2 plies and place it on the tissue on the acrylic plate. Tilt the acrylic plate and measure the angle at which the weight slides down. The angle measurement is performed four times in the vertical direction and four times in the horizontal direction for a total of eight times, the average angle is calculated, and the tangent value is taken as the static friction coefficient.
MMD is an average deviation MMD of the static friction coefficient. MMD is one of the indices of smoothness. The smaller the numerical value, the smoother, and the larger the numerical value, the less smooth. As a method for measuring the MMD value, as shown in FIG. 23A, a tension of 20 g / cm is applied to the contact surface of the friction element 212 in a predetermined direction (downward and rightward in FIG. 23A). While being brought into contact with the surface of the tissue paper 211, which is the measured sample, at a contact pressure of 25 g, it is moved 2 cm at a speed of 0.1 cm / s in the same direction as the direction in which the tension is applied. The friction coefficient at this time was measured using a friction feeling tester KES-SE (manufactured by Kato Tech Co., Ltd.), and the value obtained by dividing the friction coefficient by the friction distance (movement distance = 2 cm) was defined as the MMD value. The friction element 212 includes 20 piano wires P having a diameter of 0.5 mm adjacent to each other, and has a contact surface formed so that the length and the width are both 10 mm. The contact surface is formed with a unit bulging portion whose tip is formed of 20 piano wires P (curvature radius 0.25 mm). FIG. 23 (a) schematically shows the friction element 212, and FIG. 23 (b) shows an enlarged view of a portion surrounded by a dashed line in FIG. 23 (a).
Moisture content: Measured according to JIS P 8111 (1998).
Chemical solution content: The chemical solution application amount indicates the content of the chemical component in a dry state (absolutely dry) included in the unit area of tissue paper in the standard state of JIS P 8111. The content of components other than moisture in the chemical solution shall be indicated. The unit area of the tissue paper is an area of the plyed sheet viewed from a viewpoint perpendicular to the plane, and does not mean the total area of each plyed sheet and its front and back surfaces.
Chemical solution content ratio: Chemical solution application rate means that the tissue paper product with a predetermined mass conditioned under JIS P 8111 conditions is the denominator (A) (g), and the chemical solution contained in the tissue paper product with the predetermined mass The ratio of (B) divided by (A) is expressed as (%), with the mass (B) (g) excluding the moisture of (b) as a molecule. (Chemical solution content%) = (B) ÷ (A) × 100 (%)
Sensory evaluation: For Examples 1 to 6, Reference Examples 1 and 3, and Comparative Examples 1 and 2, targeting 87 consumers, softness, smoothness, thickness, moistness based on the following criteria Evaluation was performed. Moreover, about the comparative examples 3 and 4, sensory evaluation was performed for 12 different persons with different dates.
The evaluation criteria are “3” for all the results of the non-humidifying general-purpose tissue paper (Comparative Example 1) to which no chemical solution is applied, and “5”, “ “4” for those who felt “excellent”, “3” for those who felt “equivalent to the standard”, “2” for those who felt “inferior”, “notably inferior” The thing was set to “1”. In addition, the tissue-coated tissue paper is also evaluated for the presence or absence of a sticky feeling, and the evaluation criteria are “○” for “less sticky” and “×” for “obviously sticky”. did.

As can be seen from the results in Table 1 and Table 2, the secondary roll roll manufactured by the method for manufacturing a secondary roll for tissue paper products according to the present invention is used to manufacture the multi-stand type interfolder. In addition, the chemical-containing tissue paper product has a high ratio of the paper thickness (2P: 2 ply) to the rice tsubo, and the sensory evaluation is particularly high in “thickness”.
Moreover, although not described in the table, in any of Examples 1 to 5, compared with the flexo method of Reference Examples 1 to 3 and the gravure transfer method of Comparative Example 2 at the manufacturing site, the paper It was found that there was very little generation of powder and stable production was possible.

As is apparent from the above description, the present specification and drawings also disclose the following invention.
[Invention A]
An apparatus for producing a secondary web roll for tissue paper products that continuously produces a plurality of secondary web rolls for tissue paper products from a primary web roll,
Laminating means for laminating a primary continuous sheet fed from a plurality of primary raw rolls along the continuous direction to form a laminated continuous sheet;
A chemical spraying means for applying a chemical in a sprayed state to the laminated continuous sheet;
Slitting means for slitting the laminated continuous sheet so as to be a product width of tissue paper products or a multiple of the width,
Tissue paper product comprising winding means for winding each slit continuous sheet coaxially to form a product width of the tissue paper product or a plurality of secondary raw rolls of multiple widths thereof. Secondary roll roll manufacturing equipment.

[Invention B]
The manufacturing apparatus of the secondary raw material roll for tissue paper products of the invention A in which the said chemical | medical solution spraying means is performed after the said lamination | stacking means and before the said slit means.

[Invention C]
The manufacturing apparatus of the secondary raw material roll for tissue paper products of the invention B which has a smoothing process of smoothing with a calender between the said lamination | stacking means and the said chemical | medical solution spraying means.

[Invention D]
The secondary raw material for tissue paper products according to the invention B, further comprising contact embossing means for applying line-shaped contact embossing for preventing delamination on the laminated continuous sheet between the chemical spraying means and the slit means. Anti-roll manufacturing equipment.

[Invention E]
The apparatus for producing a secondary paper roll for tissue paper products according to Invention A, wherein the chemical solution is applied by a nozzle spray method.

[Invention F]
The manufacturing apparatus of the secondary raw material roll for tissue paper products of Claim 1 whose provision of the said chemical | medical solution is based on a rotor dampening spray system.

[Invention G]
A large number of the secondary web rolls obtained by the invention of any one of the above-mentioned inventions are prepared, arranged in the line direction in a multi-stand type interfolder, and a plurality of secondary web rolls fed out from each secondary web roll The secondary continuous sheet is transported along the continuous direction and stacked while being folded in the transport process. After that, a predetermined number of laminated sheets are cut to a predetermined length to form a tissue paper bundle, and this stack is stored in a storage box. An apparatus for manufacturing tissue paper products, characterized in that:

  The present invention can be applied to the production of a secondary roll for tissue paper products used in a multi-stand type interfolder.

51 ... Ply process (lamination means)
52 ... Calendar means (smoothing process)
53 ... Chemical solution spraying means (chemical solution applying step)
54 ... Contact embossing means (contact embossing process)
55 ... Slit means (slit process)
56 ... Winding means (winding process)
S11, S12 ... primary continuous sheet S2 ... laminated continuous sheet JR ... primary raw roll R ... secondary raw roll

The present invention relates to a method for manufacturing a tissue paper product coated with a chemical solution using a multi-stand type interfolder.

A box of tissue paper is generally obtained by stacking multiple tissue papers by folding them with an interfolder (folding equipment) and cutting them into a predetermined length to obtain a tissue paper bundle. It is manufactured by storing in a storage box (tissue carton).
Examples of such interfolders include multi-stand type (multiple type) interfolders as disclosed in Patent Documents 1 and 2 below, and rotary interfolders as disclosed in Patent Documents 3 and 4 below. It has been known.
The following is a conventional example of a manufacturing method using a multi-stand type interfolder. That is, a primary web roll (generally also called a jumbo roll) is manufactured by making a thin paper in a papermaking facility and winding it. Then, this primary web roll is set on a ply machine, and a plurality of primary webs are produced. The primary continuous sheet fed from the roll is overlapped and wound and slit (divided into the product width of the tissue paper product or a multiple of the width of the tissue paper product in the width direction) to produce a secondary raw roll made of a plurality of plies.
After the secondary roll manufactured by the ply machine is taken out from the ply machine, the necessary number of rolls are set in the multi-stand type interfolder. Next, the secondary continuous sheet is fed out from the secondary web roll and fed to the folding mechanism, where it is stacked while being folded, and then cut into a predetermined length to form a tissue paper bundle, which is stored in a storage box. .
A manufacturing method using such a multi-stand type interfolder has a higher number of folding mechanisms (usually 80 to 100) than a manufacturing method using other folding equipment, and is therefore highly productive. Has advantages.

  By the way, in recent years, the demand for a tissue paper product coated with a chemical such as a moisturizer (usually also referred to as “lotion chemical”) has increased, and for example, a manufacturing method as disclosed in Patent Documents 5 to 7 below Various facilities have been proposed. In general, tissue paper products containing such a lotion chemical are mainly manufactured by a rotary interfolder (for example, Patent Document 5 below). However, the rotary type interfolder has a drawback in that productivity is low because folding and cutting are simultaneously performed in the direction perpendicular to the processing direction.

US Patent No. 4052048 (Japanese Patent Publication No. 55-1215) JP 2006-240750 A JP 61-37668 A Japanese Patent Laid-Open No. 5-124770 Japanese Patent Application Laid-Open No. 2004-332034 Special table 2008-525103 gazette JP 2008-264564 A

Therefore, the present inventors have considered manufacturing tissue paper products to which a chemical solution has been applied by a manufacturing method using a multi-stand type interfolder that is more productive than a rotary interfolder.
However, when manufacturing by a manufacturing method using a multi-stand type interfolder, if a chemical solution application step is provided separately from the ply machine or the multi-stand type interfolder, it takes time and labor to transfer the raw material and a large equipment cost. There is a problem. Further, when the chemical solution application step is provided in the multi-stand type interfolder, it is necessary to separately provide a line for manufacturing a tissue paper product to which a chemical solution is applied and a line for manufacturing a tissue paper product to which no chemical solution is applied.

Therefore, the main problem of the present invention is that, in producing a tissue paper product coated with a chemical using a multi-stand type interfolder , a minor modification of the existing equipment is sufficient without requiring significant equipment modification, Manufacture of tissue paper products coated with a highly productive chemical solution that uses a single multi-stand type interfolder, but is easy to switch between tissue paper products with chemicals and those without chemicals. It is to provide a method.
On the other hand, mixing of paper dust is suppressed, so that a chemical solution can be stably applied.

Means for solving the above problems and their effects are as follows.
[Invention of Claim 1]
A method for producing tissue paper products coated with a chemical solution,
By a ply machine that continuously produces a secondary roll for tissue paper products from a primary roll that has been made and wound by a papermaking facility ;
A lamination step in which a primary continuous sheet fed from a plurality of primary fabric rolls is laminated along the continuous direction to form a laminated continuous sheet;
A chemical spraying process for applying a lotion chemical in a sprayed state to the laminated continuous sheet;
A contact embossing step for applying line-shaped contact embossing to prevent delamination on the laminated continuous sheet to which the chemical solution is applied;
A slitting process for slitting the laminated continuous sheet to which the chemical solution is applied and the contact embossing is performed so as to be the product width of the tissue paper product or a multiple of the width,
Winding each slit continuous laminated sheet coaxially to form a product width of the tissue paper product or a plurality of secondary raw rolls of multiple times the width,
A large number of secondary fabric rolls coated with chemicals obtained by the ply machine are set corresponding to the folding mechanism part of the multi-stand type interfolder. Each of the secondary continuous sheets from the anti-roll is fed into the folding mechanism part, the secondary continuous sheet is folded to obtain a laminated band stacked while crossing the side edges of each secondary continuous sheet,
Thereafter, the tissue paper bundle is cut by cutting at a predetermined interval in the flow direction, and the tissue paper bundle is stored in a storage box to obtain a tissue paper product.
A method for producing a tissue paper product to which a chemical solution is applied .

(Function and effect)
In the present invention, a secondary raw roll for tissue paper products for continuously supplying a multi-stand type interfolder from a primary raw roll that has been made and wound is manufactured in a so-called ply machine. In addition, a chemical solution spraying step is incorporated to apply the chemical solution to the sheet.
Therefore, a minor modification of the existing ply machine is sufficient without requiring a large facility modification, and there is an advantage that a small investment facility cost is sufficient.
In addition, since the chemical spraying process is incorporated in the ply machine instead of providing the chemical spraying process in the multi-stand type interfolder, the tissue paper product to which the chemical liquid is applied and the tissue paper product to which the chemical liquid is not applied are provided. This switching is simply performed depending on whether or not a chemical solution is applied to the secondary raw roll for tissue paper products, and is excellent in productivity.

  In addition, when a chemical spraying process is provided in a multi-stand type interfolder, for example, it is conceivable to provide a large number of chemical spraying apparatuses for the laminated sheet layer, but this not only increases the equipment cost but also the installation space. In addition, it is difficult to ensure the accuracy, and it is practically impossible to accurately manage the applied amount in each device. Compared with this embodiment, the manufacturing method of the present invention provides advantages such as equipment cost and amount management.

On the other hand, in the case of a rotary type interfolder, its processing speed (sheet traveling speed) is low, so that a wide sheet (for example, 2) is used in a rotary cylinder type processing machine as described in JP-A-2008-245780. It is possible to apply a chemical in the process of supplying (about 3 m).
However, it is conceivable that the tissue paper production line using the multi-stand type interfolder is set to a high speed of, for example, 700 to 1400 m / min. In that case, it is necessary to perform the ply processing at the same speed in the ply machine in order to match the production speed. In such a high-speed ply machine, for example, when a chemical solution is applied by a method such as gravure, flexo, or roll coating, a large amount of paper dust is generated mainly due to friction between the sheet running at high speed and the coating roll. It mixes in the chemical solution and its concentration changes, resulting in variations in coating amount. On the other hand, in this invention, since chemical | medical solution is provided by spraying, it is freed from the trouble accompanying generation | occurrence | production of paper dust.

  Furthermore, when the chemical solution is applied by spraying according to the present invention, the fiber layer is not crimped between the rolls in the state of containing the chemical solution, as seen in systems such as gravure, flexo, and roll coating. Thus, a thicker or thicker tissue paper can be obtained.

[Invention of Claim 2]
The manufacturing method of the tissue paper product with which the chemical | medical solution was apply | coated of Claim 1 which has the smoothing process of smoothing with a calender between the said lamination | stacking process and the said chemical | medical solution spraying process.

[Invention of Claim 3]
The manufacturing method of the tissue paper product with which the chemical | medical solution was apply | coated of Claim 1 with which the provision of the said chemical | medical solution is based on a nozzle type spray system.

[Invention of Claim 4]
The manufacturing method of the tissue paper product with which the chemical | medical solution was apply | coated of Claim 1 whose provision of the said chemical | medical solution is based on a rotor dampening spray system.

  A number of secondary rolls for tissue paper products manufactured so as to have a product width of tissue paper products or multiple times the width of tissue paper products in the slit process in the manufacturing method according to the present invention are set in a multi-stand type interfolder at this latter stage. The Next, the secondary continuous sheet is fed out from the secondary raw roll set in the multi-stand type interfolder, sent to the folding mechanism, stacked while being folded, and then cut into a predetermined length and the tissue paper Make a bundle and store it in a storage box.

In this invention, in the manufacturing method of the tissue paper product with which the chemical | medical solution was apply | coated , a chemical | medical solution is provided with a spray system with respect to a lamination | stacking continuous sheet. For this reason, when providing a chemical | medical solution provision process separately from a ply machine and a multi-stand type | system | group interfolder, the effort of the original fabric transfer and a great installation cost do not start.
In addition, when manufacturing tissue paper products that do not apply chemicals, it is only necessary to manufacture without applying chemicals in the process of manufacturing secondary rolls for tissue paper products. .

In the method for manufacturing a tissue paper product to which the chemical solution according to the present invention is applied , the chemical solution spraying step is preferably performed after the laminating step and before the slitting step. If the chemical spraying process is before the laminating process, it is necessary to provide equipment for spraying the chemical liquid on each primary continuous sheet. Since the chemical solution is sprayed and applied to the divided laminated continuous sheet, the chemical solution leaks from the slit, causing roll dirt and paper breakage. When the chemical spraying process is performed between the laminating process and the slitting process, it is sufficient to prepare equipment for spraying the chemical only on the laminated continuous sheet that is not divided by the slitting process. There is little, and there is little paper break and operation is stable.

In the manufacturing method of the tissue paper product to which the chemical | medical solution concerning this invention was apply | coated, it is preferable to have the smoothing process of smoothing by a calendar | calender etc. By having a smoothing process, the secondary raw material roll for tissue paper products with a smooth surface can be manufactured.
In addition, it is preferable that a smoothing process is performed between a lamination process and a chemical | medical solution spray provision process. If the smoothing step is before the laminating step and there are at least two facilities for smoothing the outer surface of the outer sheet of the laminated sheet, the same effect as the one smoothing step after the laminating step is obtained. In addition, when the same smoothness is obtained with two calenders on the surface of two sheets as outer layers, the paper thickness tends to be impaired.

In the manufacturing method of the tissue paper product to which the chemical | medical solution concerning this invention was apply | coated, it is preferable to have a contact embossing process which performs the line-shaped contact embossing which prevents delamination with respect to a lamination | stacking continuous sheet.
This contact embossing process is preferably performed before the slitting process. If the contact embossing process is after the slitting process, contact embossing will be applied to the laminated continuous sheet with slits in the product width, and there will be two locations (two lines) at the end of the laminated sheet having a continuous product width. Since contact embossing is performed, it becomes easier to cut the paper than contact embossing at the full width.

In the method for producing a tissue paper product to which the chemical solution according to the present invention is applied , any known spraying method such as a nozzle spraying method or a rotor dampening spraying method can be used as the chemical spraying method.

It is the schematic which shows the manufacturing equipment and manufacturing method of a primary web roll. It is the schematic which shows an example of a multi stand type inter folder, and has shown the state seen from the front. It is the schematic which shows an example of a multi stand type inter folder, and has shown the state seen from the side. It is the schematic which shows an example of a multi stand type inter folder, and has shown the state seen from the front. It is a longitudinal cross-sectional view of the folded tissue paper. (A) It is a figure which shows a mode that the tissue paper bundle is accommodated in the storage box. (B) It is a partially broken figure which shows a mode that the tissue paper accommodated in the storage box is taken out. It is a principal part expansion perspective view of the site | part regarding a folding plate. It is a principal part expansion perspective view which shows how to fold a secondary continuous sheet (tissue paper). It is a principal part expansion perspective view which shows how to fold a secondary continuous sheet (tissue paper). It is a principal part expansion perspective view which shows how to fold a secondary continuous sheet (tissue paper). It is the schematic which shows the manufacturing equipment and manufacturing method of a secondary web roll. It is a principal part enlarged view of the periphery of the chemical | medical solution spraying means shown in FIG. It is a figure which shows a mode that the contact embossing is provided to the lamination | stacking continuous sheet by the contact embossing means. It is a schematic block diagram which shows the other example of a chemical | medical solution spraying means. It is a schematic block diagram which shows the example of another chemical | medical solution spraying means. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is the schematic which shows the manufacturing equipment and manufacturing method of another secondary raw fabric roll. It is a schematic diagram which shows the structure of a lamination | stacking continuous sheet (tissue paper). (A) MD direction sectional drawing before chemical | medical solution spraying, (B) Top view before chemical | medical solution osmosis | permeation process, (C) II arrow directional view. It is a schematic diagram which shows the surface uneven structure of a lamination | stacking continuous sheet (tissue paper). (A) Before chemical solution spraying, (B) After chemical solution spraying. It is a schematic diagram which shows a chemical | medical solution penetration process. It is a figure which shows the measuring method of the MMD value of tissue paper.

Next, an embodiment of the present invention will be described. In the figure, the arrow HD indicates the horizontal direction, and the arrow LD indicates the vertical direction.
[Manufacture of primary rolls]
An example of the manufacturing method of a primary fabric roll is demonstrated referring FIG.
As shown in FIG. 1, the wet paper W that has passed through the wire part is placed on the bottom felt 111 and transferred, and thereafter, sandwiched between the top felt 110 and the bottom felt 111, between the top roll 112 and the bottom roll 113. Passed and squeezed. Thereafter, the wet paper web W squeezed is attached to the surface of the Yankee dryer 115 via the touch roll 116 while being placed on the top felt 110. Then, the wet paper W is dried by the Yankee dryer 115, peeled off by the doctor blade 117, and then wound up to be a primary raw roll JR.
In this papermaking, for example, dispersants, dry paper strength enhancers, wet paper strength enhancers, softeners, release agents, adhesives, pH adjusters such as caustic soda, antifoaming agents, preservatives, slime control agents, dyes , Etc. can be added as appropriate chemicals.
In the method of manufacturing the primary raw roll, the smoothing process can be performed by the calendar means 118 after being peeled off by the doctor blade 117.

[Manufacture of secondary rolls for tissue paper products]
A plurality of secondary web rolls for tissue paper products are continuously produced from the primary web roll JR produced in the above example. For example, as shown in FIG. 11, the production facility X1 (ply machine X1) for the secondary paper roll for tissue paper products can set at least two or more primary raw material rolls JR manufactured in the above example. A primary continuous sheet (S11, S12 in the illustrated example) fed from the primary raw roll JR is laminated along the continuous direction to form a laminated continuous sheet S2 (plying step). is doing.

  A pair of chemical solution spraying means 53 for spraying a chemical solution onto the laminated continuous sheet S <b> 2 flowing from the ply means 51 is provided at the subsequent stage of the ply means 51. The slit means 55 (slit process) which consists of a plurality of cutters and slits the laminated continuous sheet S2 transferred from the chemical spray means 53 so as to have a product width of tissue paper products or a multiple of the width of the tissue paper product is arranged. ing. Then, at the subsequent stage of the slit means 55, the laminated continuous sheet S2 slit by the slit means 55 is coaxially wound to form a plurality of secondary raw rolls R having a product width of tissue paper products or a multiple of the width. Winding means 56 is provided. Here, the winding means 56 has two winding drums 56A for guiding each slit continuous sheet S2 to the secondary raw roll R, and these two winding drums 56A are secondary. The laminated continuous sheet S2 is guided in contact with the outer peripheral surface of the raw roll R.

  In the production of the secondary raw material roll for tissue paper products according to this embodiment, the processing speed (also the traveling speed of the sheet in chemical spray application) is 100 to 1100 m / min, preferably 350 to 1050 m / min. More preferably, it is 450 to 1000 m / min. If it is less than 100 m / min, the productivity is low. On the other hand, if it exceeds 1100 m / min, there is a possibility that the frequency of cutting the laminated continuous sheet S2 is increased.

[Processing with multi-stand type inter folder]
A large number of secondary rolls R for tissue paper products thus obtained are set in a multi-stand type interfolder in the line direction (for example, half the number of sets of products), and the secondary rolls are set. From R, the secondary continuous sheet is fed out and transferred along the continuous direction, and a tissue paper bundle is manufactured by stacking while folding in the transfer process, and then a predetermined number of laminated sheets are cut to a predetermined length. A tissue paper product is manufactured by forming a tissue paper bundle and storing this stack in a storage box.

Hereinafter, an example of the multi-stand type interfolder and the packaging form will be described.
2 and 3 show an example of a multi-stand type interfolder. Reference numeral 2 in the figure denotes secondary raw rolls R, R... Set on a secondary raw roll support portion (not shown) of the multi-stand type interfolder 1. The secondary raw rolls R, R... Are set side by side in a direction (the horizontal direction in FIG. 2 and the front-to-back direction in FIG. 3) perpendicular to the illustrated plane. Each secondary roll R is slit in the tissue paper product width in the manufacturing process of the above-described secondary roll for tissue paper products. Rolled up and set.

  The continuous belt-like secondary continuous sheets 3 </ b> A and 3 </ b> B unwound from the secondary raw roll R are guided by guide means such as guide rollers G <b> 1 and G <b> 1 and sent to the folding mechanism unit 20. Moreover, the folding mechanism part 20 is provided with the folding plate group 21 in which the required number of folding plates P, P ... are arranged in parallel as shown in FIG. For each folded plate P, guide rollers G2, G2 and guide round bar members G3, G3 for guiding a pair of continuous secondary continuous sheets 3A or 3B are respectively provided at appropriate positions. Further, below the folded plates P, P..., A conveyor 22 is provided that receives and conveys the laminated band 30 that is stacked while being folded.

  A folding mechanism using this type of folded plates P, P... Is a known mechanism, for example, from US Pat. As shown in FIG. 5, this type of folding mechanism folds each continuous secondary continuous sheet 3A, 3B... In the Z-shape and is adjacent to the adjacent secondary continuous sheet 3A, 3B. Stack the ends together.

  FIGS. 7 to 10 show in detail the portions of the folding mechanism 20 that are particularly related to the folded plate P. FIG. In the folding mechanism unit 20, a pair of continuous secondary continuous sheets 3A and 3B are guided for each folded plate P. At this time, the continuous secondary continuous sheets 3A and 3B are guided by the guide round bar members G3 and G3 while being shifted in position so that the side end portions do not overlap each other.

  A continuous secondary continuous sheet that is overlapped on the lower side when guided by the folded plate P is defined as a first continuous secondary continuous sheet 3A, and a continuous secondary continuous sheet that is overlapped on the upper side is a second continuous sheet. As shown in FIGS. 5 and 8, these continuous secondary sheets 3A and 3B are second continuous secondary sheets of the first continuous secondary continuous sheet 3A. The side end e1 that does not overlap the sheet 3B is folded back to the upper side of the second continuous secondary continuous sheet 3B by the side plate P1 of the folded plate P, and as shown in FIGS. The side end e2 of the continuous secondary continuous sheet 3B that does not overlap with the first continuous secondary continuous sheet 3A is folded downward so as to be drawn under the folded plate P from the slit P2 of the folded plate P. . At this time, as shown in FIGS. 5 and 10, the side end portion e3 (e1) of the continuous secondary continuous sheet 3A stacked while being folded in the upstream folded plate P is second from the slit P2 of the folded plate P. Are guided between the folded portions of the continuous secondary sheet 3B. In this way, each continuous secondary continuous sheet 3A, 3B... Is folded into a Z-shape and the side edges of adjacent continuous secondary continuous sheets 3A and 3B are crossed together. In some cases, when the top tissue paper is pulled out, the side edge of the next tissue paper is pulled out.

  As shown in FIG. 2, the laminated band 30 obtained by the multi-stand type interfolder 1 as described above is cut (cut) at a predetermined interval in the flow direction FL by the subsequent cutting means 41, and the tissue is cut. The tissue paper bundle 30a is stored in the storage box B in the subsequent equipment as shown in FIG. 6A. In the multi-stand type interfolder 1 as described above, the paper direction of the laminated strip 30 is the vertical direction (MD direction) along the flow direction FL, and the horizontal direction along the direction orthogonal to the flow direction. Direction (CD direction). For this reason, the direction of the paper of the tissue paper constituting the tissue paper bundle 30a obtained by cutting the laminated band 30 into a predetermined length is the extension of the folded portion of the tissue paper as shown in FIG. The vertical direction (MD direction) is along the existing direction, and the horizontal direction (CD direction) is along the direction orthogonal to the extending direction of the folded portion of the tissue paper.

FIG. 6B shows an example of a product in which the tissue paper bundle 30a is stored in the storage box B. A perforation M is provided on the upper surface of the storage box B, and a part of the upper surface of the storage box B is broken by the perforation M so that the upper surface of the storage box B is opened. The opening is covered with a film F having a slit at the center, and the tissue paper T can be taken out through the slit provided in the film F.
By the way, as described above, the direction of the paper of the tissue paper constituting the tissue paper bundle 30a is the horizontal direction (CD direction) along the direction orthogonal to the extending direction of the folded portion of the tissue paper. As shown in (b), when pulling out the tissue paper T from the storage box B, the pulling direction is along the lateral direction (CD direction) of the tissue paper T.

(Calendar means)
By the way, one or more calendar means 52 for calendering the laminated continuous sheet S2 can be provided in the production facility X1 for the secondary raw material roll for tissue paper products described above.
The type of calendar in the calendar means 52 is not particularly limited, but is preferably a soft calendar or a chilled calendar for the purpose of improving the smoothness of the surface and adjusting the paper thickness. The soft calendar is a calendar using a roll coated with an elastic material such as urethane rubber, and the chilled calendar is a calendar made of a metal roll.

The number of calendar means 52 can be changed as appropriate. If there is a plurality of installations, it has the advantage that it can be sufficiently smoothed even if the processing speed is high.
When two or more calendar means 52 are installed, they can be arranged side by side in the horizontal direction, the up-down direction, or the diagonal direction, and these installation directions may be combined. When arranged side by side in the horizontal direction, the holding angle becomes smaller, so the processing speed can be increased, and when arranged side by side in the vertical direction, the installation space can be reduced. Here, the holding angle means an angle while the sheet is in contact as viewed from the roll axis center (a part of a circular arc of a cross section perpendicular to the axis) (hereinafter the same).
Paper making is also performed as control factors such as calendar type, nip line pressure, and number of nips in the calendar processing conditions, and these control factors are preferably changed as appropriate depending on the quality of tissue paper to be obtained, that is, paper thickness and surface properties.
Further, the installation position of the calendar means 52 is not particularly limited. However, it is located after the ply means 51 and before the chemical spray means 53, after the chemical spray means 53 and before the contact emboss means 54. Can do.

(Contact embossing means)
The production facility X1 for the secondary paper roll for tissue paper products can be provided with contact embossing means 54 for imparting contact embossing to the laminated continuous sheet S2.

  Here, as shown in FIG. 13, in the contact embossing means 54, a receiving roll 54B, which is a metal roll or an elastic roll, and a metal, hard roller 54A having a fine convex portion 54C on the surface have a predetermined pressure. The outer peripheral surfaces are in contact with each other, and are installed so as to be rotatable. Then, with respect to the portion corresponding to the center in the width direction of the tissue paper product in the laminated continuous sheet S2, the laminated continuous sheet S2 is conveyed while sandwiching the laminated continuous sheet S2 between the convex portion 54C and the receiving roll 54B. Thus, line-shaped contact embossing CE for preventing delamination along the continuous direction of the laminated continuous sheet S2 is applied to the laminated continuous sheet S2.

  In addition, the winding means 56 mentioned above winds up the lamination | stacking continuous sheet S2 by making the surface on the side facing the roller 54A which performs this contact embossing CE into an outer peripheral side.

By providing the contact embossing CE in this manner, delamination of the laminated continuous sheet S2 formed by laminating a plurality of primary continuous sheets (S11 and S12 in the illustrated example) is prevented. In addition, it is preferable that the contact embossing CE is formed so as to be positioned on both sides in the width direction of the tissue paper product so that the end portion of the tissue paper product is hardly delaminated.
The location where the contact embossing means 54 is installed is not particularly limited, but it is a stage subsequent to the chemical solution applying means 53 and preceding the slit means 55, and a stage subsequent to the calendar means 52 and preceding the chemical solution applying means 53. But you can. That is, it suffices if it is at a position after the calendar means 52 and before the slit means 55.

  When the contact embossing means 54 is applied by the contact embossing means 54, the contact embossing CE is applied within 0.3 to 2.5 seconds, preferably within 0.3 to 1.0 seconds after the chemical solution is applied to the laminated continuous sheet S2. It is also proposed to give If the time is less than 0.3 seconds, the chemical solution is not sufficiently absorbed by the base paper, so that the chemical solution adheres to the receiving roll 54B and the roller 54A and the paper is cut off, or dirt is attached to the receiving roll 54B and the roller 54A. If it exceeds 2.5 seconds, the laminated continuous sheet S2 to which the chemical solution has been applied stretches, so that subsequent process wrinkles are less likely to occur, making it difficult to obtain a bulky tissue paper product. In addition, when the laminated continuous sheet S2 is fully stretched, there is no stretch that can cope with draw fluctuations, and the tensile strength is reduced due to moisture absorption and water absorption.

Further, in this joining process, in the present embodiment, a metal and hard roller 54A having a fine convex portion 54C on the surface is used as a roller, but a line-shaped joint that prevents delamination from the laminated continuous sheet S2. For example, instead of the roller 54A, a roller having a fine needle-like member on the surface can be used as the roller.
Furthermore, the means for joining is not limited to the above example, and the tip shape of the convex portion may be a point, square, rectangular, circular, elliptical shape, etc. A tip having a slender linear shape or a thin and slanting linear shape may be used as the roller.

  On the other hand, the arrangement of the protrusions may be equally spaced, but may not be staggered or evenly spaced. In addition to arranging the protrusions in a row and providing contact embossing continuously, It is also conceivable to arrange the parts in two or more rows. Then, a plurality of groups in which convex portions are arranged so as to provide a plurality of rows of contact embossing closely may be arranged to provide a plurality of contact embossing groups. In addition, as a joining process, you may join by other means, such as an ultrasonic wave, besides joining by applying a pressure mechanically as mentioned above.

(Medication spraying means)
In the manufacture of the secondary raw material roll for tissue paper products according to the present embodiment, it is applied to the laminated continuous sheet S2 while spraying a chemical solution.
Although it does not specifically limit as the chemical | medical solution spraying means 53, In addition to the case of a nozzle type spray system, you may use a rotor dampening spray system.

  Among these, the types of spray nozzles in the nozzle spray device include an empty conical nozzle that sprays in an annular shape, a full conical nozzle that sprays in a circular shape, a full pyramid that sprays in a square shape, a full nozzle and a fan Type nozzles, etc., so that the chemical solution is sprayed uniformly in the width direction of the sheet, the nozzle diameter, the number of nozzles, the nozzle arrangement pattern, the number of nozzles, or the spray distance, spray pressure, spray angle, and spray The concentration and viscosity of the liquid can be appropriately selected and used.

  Moreover, about the method of atomizing in a nozzle type spraying apparatus, it can select and use two types, a 1 fluid system or a 2 fluid system. Of these, the one-fluid spraying method applies pressure directly to the chemical liquid to be sprayed using compressed air and sprays mist droplets from the nozzle, or blows air into the nozzle from a fine hole opened on the side of the nozzle near the jet outlet. This is a method of sucking and spraying mist. In addition, the two-fluid spraying method is mixed with a liquid sprayed with compressed air inside the nozzle, an internal mixing type that atomizes, mixed with a liquid sprayed with compressed air outside the nozzle, an external mixing type that atomizes, and atomized Examples include a collision type system in which mist droplet particles collide with each other to further homogenize and atomize the mist droplet particles.

On the other hand, the rotor dampening coating device is a device that sends out the liquid to be sprayed onto a disk that rotates at high speed, and makes the liquid atomized by the centrifugal force of the disk, and controls the particle size of the droplets by changing the rotational speed of the disk. The amount of spray liquid (applied amount) is controlled by changing the amount of liquid fed onto the disk. Is. Rotor dampening applicator can apply a small amount of spray liquid evenly on the surface of pigment coated paper while suppressing spraying of mist droplets, and it is easy to adjust the spraying speed and the particle size of mist. There are certain advantages.
In order to spray the chemical solution uniformly on the sheet surface, the atomized particle size of the atomized chemical solution is preferably as small as possible. However, if the mist droplets become too fine, the mist droplets will be swept away by the rebound of the sprayed air or the air accompanying the sheet surface, and the mist droplets will not easily adhere to the sheet surface, especially when the traveling speed of the sheet is high. Become. For this reason, in the spray application system, the spray distance, spray pressure, spray angle, spray speed, and in the case of the two-fluid system, the mixing ratio of the chemical liquid for spraying and the compressed air, the concentration and viscosity of the chemical liquid, etc. It can be adjusted appropriately to adjust the particle size to suit the application conditions. If the influence of the accompanying air is large during spraying, installation of a suction device or baffle plate (rectifying plate) to remove the accompanying air, Further, a charged electrode (electrostatic spraying method) or the like may be added to apply high voltage to the tip of the spray nozzle to charge the mist droplet particles to improve the appropriate adhesion of the mist to the pigment coated paper.
The mist droplets floating as mist without being applied to the sheet surface can be sucked and collected and sprayed again.

  FIG. 12 shows an example of a nozzle type spray method, particularly a two-fluid type chemical spray device 53A (53B). This device 53A has a chemical liquid passage 53a at its center and an air passage 53b around it, and atomizes the chemical liquid ejected from the tip of the chemical liquid passage 53a with the air discharged from the air passage 53b. The chemical solution is sprayed in a substantially conical shape. Reference numeral 53c denotes an external protective casing that protects the nozzle from paper dust and the like, and can clean the nozzle with air that passes through the purge air passage 53d if necessary. This kind of chemical spraying device 53A (53B) can be provided at one or more intervals in the width direction of the sheet.

  As described above, the mist droplets are washed away by the rebound of the sprayed chemical liquid or the air accompanying the surface of the sheet, and particularly when the traveling speed of the sheet is high, the mist droplet is difficult to adhere to the sheet surface. Therefore, if necessary, as shown in FIG.

When the sprayed chemical liquid from the chemical liquid spraying means (spray nozzle) is surrounded by the air sprayed from the air supply path 53f formed in the casing 53e from around the chemical liquid spraying means (spray nozzle) 53, the chemical liquid is suitably applied to the sheet S2. be able to.

  FIG. 15 shows an example of a rotor dampening coating device 53X. In this case, a rotating rotor 53o is provided in a cover housing chamber 53p provided as necessary, and a chemical solution is sprayed onto the sheet S2 from an ejection port 53q of the rotating rotor 53o.

  By the way, it is preferable that the means (calendar means 52 and contact embossing means 54 in the example of FIG. 11) arranged before and after the chemical solution spraying means 53 are arranged close to each other. By doing so, when manufacturing a tissue paper product to which no chemical liquid is applied, the laminated continuous sheet S2 is directly transferred from the front stage to the rear stage of the chemical liquid spraying means 53, and the laminated continuous sheet S2 is not passed through the chemical liquid spraying means 53. Since it only has to pass through, it is possible to easily switch the presence or absence of chemical application. For example, in the manufacturing equipment X1 for the secondary paper roll for tissue paper products shown in FIG. 11, when manufacturing the tissue paper products to which no chemical solution is applied, as shown by the two-dot chain line in FIG. It is only necessary to transfer directly from the means 52 to the contact embossing means 54 and to flow the laminated continuous sheet S2 without passing through the chemical solution spraying means 53.

When imparting chemical on both surfaces of the laminated continuous sheet S2, chemical application amount of the double-sided total is a 1.5~5.0g / m ^2, is preferably a 2.0 to 4.5 g / m ^2, More preferably, it is 2.5 to 4.0 g / m ² . If it exceeds 5.0 g / m ² , the paper may be cut due to a decrease in paper strength or elongation, winding may occur when winding with a winding drum, or the quality may be too sticky. . If it is less than 1.5 g / m ² , it will not be possible to feel the quality difference from the unassigned product such as smoothness and moist feeling.
In addition, when there is a difference in the application amount to both application surfaces, since both application surfaces are in contact with each other during the time (8 hours or more) from being stored in the ply original fabric to being folded after spray application, Gradually, the amounts of both chemicals are equalized, and the difference between the two sides becomes smaller.

When applying a chemical | medical solution only to the single side | surface of lamination | stacking continuous sheet S2, the application | coating surface of a chemical | medical solution is to the surface (surface at the side of primary continuous sheet S11) located in the outer side of the secondary original fabric roll R in lamination | stacking continuous sheet S2. Grant is good. In this way, there is a difference between the front and the back of the product, but it is difficult to cause winding slip. In this case, the applied amount is 1.5 to 5.0 g / m ² , preferably 2.0 to 4.5 g / m ² , more preferably 2.5 to 4.0 g / m ^2. .

  Moreover, when providing a difference in the crepe rate of each primary continuous sheet constituting the laminated continuous sheet S2, more chemical solution is applied to the primary continuous sheet side having the higher crepe rate (primary continuous sheet S11 side in the illustrated example). Is also proposed. For example, in the example shown in FIG. 11 and FIG. 20, out of the two chemical spraying means 53, the chemical spraying means 53B that directly applies the chemical liquid to the primary continuous sheet S11 is more than the other chemical spraying means 53A. The chemical solution shall be applied. In this case, the ratio of the applied amount of the chemicals on both sides is 100: 0 to 60:40, preferably 75:25 to 60:40.

  FIG. 20A is a cross-sectional view of the laminated continuous sheet S2 laminated on the two plies before applying the chemical solution (cross-sectional view cut in parallel with the MD direction). In applying the chemical solution to both surfaces of the laminated continuous sheet S2 laminated in two plies, a difference is provided in the amount of the chemical solution on both surfaces, and in the drawing, a large amount of chemical solution is applied to the primary continuous sheet S11 side. After the chemical solution is applied, before the laminated continuous sheet S2 is fully extended, the laminated layers are integrated by the contact embossing CE, and cut into the product width by the slit means 55 (FIG. 20B). Thereafter, the laminated continuous sheet S2 is taken up by the take-up means 56 and is left to stand for infiltration of the chemical solution. The primary continuous sheets S11 and S12 constituting the laminated continuous sheet S2 to which the chemical solution is applied by the chemical solution spraying means 53 mainly extend in the MD direction. At that time, the primary continuous sheet S11 to which more chemical solution is applied has a higher elongation rate than the other primary continuous sheet S12. Wrinkles occur on the surface of the extended primary continuous sheet S11 (FIG. 20C). A difference is also provided in the crepe rate of the laminated continuous sheet S2 to be laminated, and if a base paper having a high crepe rate is used for the primary continuous sheet S11, a difference may be caused in the elongation rate between the primary continuous sheet S11 and the primary continuous sheet S12. it can.

  In the example of FIG. 1, the crepe is formed by the difference between the dryer speed and the winding speed after the base paper is dried by the Yankee dryer 115 and then peeled off from the Yankee dryer 115 by the doctor blade 117. The shape of this crepe is adjusted by sticking the paper to the Yankee dryer 115, but since there is some variation in this sticking and the fiber raw material is not evenly distributed, There is some variation in the three-dimensional crepe shape. This variation becomes more prominent as the crepe rate increases.

  Along with the variation in the crepe, there is also a variation in the elongation when the chemical solution is applied, which is formed as a three-dimensional fine wave. This wave does not become apparent during the seasoning of the original fabric because tension is applied, but it is restored and becomes apparent after processing and cutting into a product. The greater the amount of chemical applied to the sheet, the greater the crepe, the greater the change in the crepe shape, the greater the corrugation of the sheet, and the smaller the amount of chemical applied to the sheet, the smaller the crepe, the smaller the crepe shape, The undulation is small. For this reason, a bulky effect can be synergized by changing not only the applied amount but also the crepe rate.

  In addition, regarding the quality, when the primary continuous sheets S11 and S12 having different crepe rates are laminated to produce a product, the tissue paper, which is a product, has a different bulk feeling unless the chemical solution is applied (FIG. 21 ( A)). However, by applying more chemical solution to the primary continuous sheet S11 having a larger surface irregularity (high crepe rate), the primary continuous sheet S11 extends at a higher elongation rate than the primary continuous sheet S12. Since it is fixed in parallel with the MD direction (not shown), the primary continuous sheet S11 corrugates and the bulk of the laminated sheet increases. (FIG. 21B)).

  By providing a difference in the amount of chemical applied, there is a concern that the touch on both sides of the product and the feeling of use will be different, but in the state of the roll before subjecting the secondary roll R to the next step (folding etc.) Since the surfaces of the primary continuous sheets S11 and S12 having different chemical application amounts are kept opposite to each other by being left standing (chemical solution infiltration process, FIG. 22), the chemical components between the continuous sheets are transferred little by little ( The difference is gradually reduced during seasoning. In addition, the white arrow in FIG. 22 shows the osmosis | permeation direction of a chemical | medical solution component.

(Medical solution)
About the chemical | medical solution to provide, a viscosity shall be 1-700 mPa * s at 40 degreeC from a viewpoint of performing high-speed processing. More preferably, it is set to 50 to 400 mPa · s (40 ° C.). If it is less than 1 mPa · s, the chemical solution is likely to be scattered on rolls such as anilox roll, printing plate roll, and gravure roll, and conversely if it is more than 700 mPa · s, it is difficult to control the amount applied to each roll or continuous sheet. Ingredients include 70-90% polyol, 1-15% moisture, and 0.01-22% functional chemicals.
The polyol includes polyhydric alcohols such as glycerin, diglycerin, propylene glycol, 1,3-butylene glycol, polyethylene glycol, and derivatives thereof, and saccharides such as sorbitol, glucose, xylitol, maltose, maltitol, mannitol, and trehalose.
Functional agents include softeners, surfactants, inorganic and organic fine particle powders, oily components, and the like. Softeners and surfactants have the effect of imparting flexibility to the tissue and smoothing the surface, and anionic surfactants, cationic surfactants and zwitterionic surfactants are applied. Inorganic and organic fine particle powders have a smooth surface. The oil component has a function of improving lubricity, and higher alcohols such as liquid paraffin, cetanol, stearyl alcohol, and oleyl alcohol can be used.
In addition, as a functional agent, one of a hydrophilic polymer gelling agent, collagen, hydrolyzed collagen, hydrolyzed keratin, hydrolyzed silk, hyaluronic acid or a salt thereof, ceramide, etc. A moisturizing agent such as any combination can be added.
Deodorants such as flavors, emollients such as various natural extracts, vitamins, emulsifiers that stabilize compounding ingredients, antifoaming agents, antifungal agents, organic acids, etc. An agent can be appropriately blended. Furthermore, you may contain the antioxidant of vitamin C and vitamin E.
Among the above components, it is preferable to use a polyhydric alcohol such as glycerin or propylene glycol as a main component in order to stabilize the viscosity and applied amount of the chemical.
The temperature at the time of chemical solution application is preferably 30 ° C to 60 ° C, preferably 35 ° C to 55 ° C.

(Primary continuous sheet)
The raw material pulp of primary continuous sheet S11, S12 is not specifically limited, According to the use of tissue paper products, an appropriate raw material pulp can be selected and used. As raw material pulp, for example, wood pulp, non-wood pulp, synthetic pulp, waste paper pulp, and the like, more specifically, groundwood pulp (GP), stone ground pulp (SGP), refiner ground pulp (RGP), pressure type Mechanical pulp (MP), chemical mechanical pulp (CGP), semi-chemical pulp (such as ground pulp (PGW), thermomechanical pulp (TMP), chemithermomechanical pulp (CTMP), bleach chemithermomechanical pulp (BCTMP) Chemical pulp (SCP), kraft pulp (KP) such as hardwood bleached kraft pulp (LBKP), softwood bleached kraft pulp (NBKP), soda pulp (AP), sulfite pulp (SP), dissolved pulp (DP), etc. CP), nylon, rayon, polyester, polyvinyl alcohol Synthetic pulp made from (PVA) etc., deinked pulp (DIP), waste paper pulp such as waist pulp (WP), waste pulp (TP), cotton, flax, hemp, jute, manila hemp, ramie etc. One or several kinds of rag pulp, straw pulp, esparto pulp, bagasse pulp, bamboo pulp, kenaf pulp, and other auxiliary pulps such as bast pulp can be appropriately selected and used.

  In particular, the raw material pulp is preferably a blend of NBKP and LBKP. Waste paper pulp may be blended as appropriate, but in terms of texture and the like, it may be composed only of NBKP and LBKP, and the blending ratio (JIS P 8120) in that case is NBKP: LBKP = 20: 80-80: 20 is good, and NBKP: LBKP = 30: 70-60: 40 is particularly desirable.

The primary continuous sheets S11 and S12 have a basis weight according to JIS P 8124 of 10 to 25 g / m ² , preferably 12 to 20 g / m ^2, and more preferably 13 to 16 g / m ² . When the basis weight is less than 10 g / m ² , it is preferable in terms of softness, but an appropriate strength cannot be ensured. On the other hand, when the basis weight exceeds 25 g / m ² , it becomes too hard and the touch is deteriorated.
Further, the paper thickness (measured with a Peacock manufactured by Ozaki Seisakusho) is 80 to 250 μm, preferably 100 to 200 μm, more preferably 130 to 180 μm per ply.

The primary continuous sheets S11 and S12 preferably have a crepe rate of 10 to 30%, more preferably 12 to 25%, and particularly preferably 13 to 20%. When the crepe rate is less than 10%, it becomes a tissue paper product that is easy to break during processing and has little stretch and is not stiff. On the other hand, if the crepe rate is more than 30%, it is difficult to control the tension of the sheet during processing, and the paper tends to be cut off.
Here, the crepe rate is expressed by the following equation.
Crepe rate: {(peripheral speed of the dryer during papermaking)-(peripheral speed of the reel)} / (peripheral speed of the dryer during papermaking) × 100.

  The primary continuous sheets S11 and S12 have a dry tensile strength (hereinafter also referred to as dry paper strength) specified in JIS P 8113 of 2 to 200 p-200 cN / 25 mm, preferably 250 to 600 cN / 25 mm. The lateral direction is preferably 300 to 600 cN / 25 mm, and the lateral direction is 100 to 300 cN / 25 mm, preferably 130 to 270 cN / 25 mm, particularly preferably 150 to 250 cN / 25 mm. If the dry tensile strength of the base paper is too low, troubles such as paper breakage and elongation at the time of production and use are likely to occur, and if it is too high, the touch becomes stiff when used.

  These paper strengths can be adjusted by a known method. For example, a dry paper strength enhancer is internally added (added to a stage before the dryer part, for example, pulp slurry), and the freeness of pulp is reduced (for example, about 30 to 40 ml). A method of increasing (for example, 50% or more) the NBKP compounding ratio can be appropriately combined.

  As the dry paper strength agent, starch, polyacrylamide, CMC (carboxymethyl cellulose) or a salt thereof such as sodium carboxymethyl cellulose, carboxymethyl cellulose calcium, carboxymethyl cellulose zinc and the like can be used. As the wet paper strength agent, polyamide polyamine epichlorohydrin resin, urea resin, acid colloid / melamine resin, thermal crosslinkability imparting PAM and the like can be used. When the wet paper strength agent is internally added, the addition amount can be about 5 to 20 kg / t in weight ratio to the pulp slurry. In addition, when the dry paper strength agent is internally added, the addition amount can be about 0.5 to 1.0 kg / t by weight ratio to the pulp slurry.

Next, the other form of the manufacturing equipment and manufacturing method of the secondary raw material roll for tissue paper products is demonstrated.
[Production equipment and production method for secondary roll for second tissue paper product]
For example, as shown in FIG. 16, tension control means 57 for controlling the tension of the laminated continuous sheet S2 may be provided between the chemical spray means 53 and the contact embossing means 54. The tension control means 57 is formed of a cylindrical roll, and can be moved up and down in accordance with the bending state of the laminated continuous sheet S2.
In addition, when the tension control means 57 is provided as in the form shown in FIG. In this case, in the calendar means 52 arranged at the subsequent stage of the tension control means 57, when applying the chemical solution, the calendar roll 52A is separated from the receiving roll 52B by a distance equal to or greater than the paper thickness of the laminated continuous sheet S2 to form the laminated continuous sheet S2. On the other hand, it is also proposed to let the user pass through without performing the smoothing process.

[Reference form of manufacturing equipment and manufacturing method for secondary roll for tissue paper products]
As shown in FIG. 17, the contact embossing means 54 can be installed between the calendar means 52 and the chemical solution spraying means 53. The manufacturing method of the secondary raw material roll for tissue paper products using such manufacturing equipment X3 of the secondary raw material roll for tissue paper products is as follows.
As shown in FIG. 17, in the manufacturing method of the secondary paper roll for tissue paper products which concerns on this form, the primary continuous sheet (S11, S12 in the example of illustration) which is drawn | fed out from the several primary raw material roll by the ply means 51. Are laminated along the continuous direction to form a laminated continuous sheet S2 (lamination step), and the laminated continuous sheet S2 is smoothed by a pair of calendar means 52 (smoothing step), and the smoothed lamination is performed. Contact embossing is applied to the continuous sheet S2 by the contact embossing means 54 (contact embossing process), and a chemical solution is applied to the laminated continuous sheet S2 provided with the contact embossing by the pair of chemical liquid spraying means 53 (chemical solution applying process) ), And the slitting means 55 causes the laminated continuous sheet S2 to have a product width of the tissue paper product or a multiple of the product width. Next, the laminated continuous sheet S2 slit in the slitting process is wound up coaxially to wind up the product width of the tissue paper product or a plurality of secondary raw rolls R having a multiple of the width. Formed by means 56.
In addition, when manufacturing the tissue paper product to which the chemical solution is not applied at the manufacturing facility X3 of the secondary paper roll for tissue paper product, the laminated continuous sheet S2 is removed from the contact embossing means 54 as shown by a two-dot chain line in FIG. It is only necessary to directly transfer to the slit means 55 and flow the laminated continuous sheet S2 without passing through the chemical spray means 53.

[Production equipment and production method for secondary roll for third tissue paper product]
As shown in FIG. 18, in the chemical application step 53, the contact embossing means 54 is installed between the ply means 51 and the calendar means 52, and the chemical spraying means 53 and the contact embossing means 54 are arranged with the calendar means 52 as one stage. It can also be installed in between. The manufacturing method of the secondary raw material roll for tissue paper products using such manufacturing equipment X4 of the secondary raw material roll for tissue paper products is as follows.
As shown in FIG. 18, in the manufacturing method of the secondary paper roll for tissue paper products which concerns on this form, the primary continuous sheet (S11, S12 in the example of illustration) which is drawn | fed out from several primary raw material rolls by the ply means 51. Are laminated in the continuous direction to form a laminated continuous sheet S2 (laminating step), and a chemical solution is applied by a pair of chemical spraying means 53 arranged in parallel in the vertical direction with respect to the laminated continuous sheet S2 (chemical solution applying step) ), Smoothing process is performed by a pair of calendar means 52 (smoothing process), contact embossing is applied to the smoothed laminated continuous sheet S2 by the contact embossing means 54 (contact embossing process), and the slit means 55 The laminated continuous sheet S2 is slit so as to have a product width of tissue paper products or a multiple of the width (slit process), and then A laminated continuous sheet S2, which is slit in slit step is wound coaxially a plurality of secondary master roll R of product width or a multiple width of tissue paper products are formed by the winding means 56.
In addition, when manufacturing the tissue paper product to which the chemical solution is not applied at the manufacturing facility X4 of the secondary paper roll for tissue paper product, the laminated continuous sheet S2 is contacted from the calendar means 52 as shown by a two-dot chain line in FIG. It is only necessary to transfer to the embossing means 54 and flow the laminated continuous sheet S2 without passing through the chemical spray means 53.

[Fourth Raw Material Roll Production Equipment and Method for Tissue Paper Products]
As shown in FIG. 19, a pair of calendar means 52 can be arranged along the vertical direction, and a pair of chemical spraying means 53 can be arranged along the vertical direction.
The manufacturing method of the secondary raw material roll for tissue paper products using such manufacturing equipment X5 of the secondary raw material roll for tissue paper products is as follows.
As shown in FIG. 19, in the manufacturing method of the secondary raw material roll for tissue paper products which concerns on this form, the primary continuous sheet (S11, S12 in the example of illustration) which is drawn | fed out from a several primary raw material roll by the ply means 51. Is laminated along the continuous direction to form a laminated continuous sheet S2 (lamination step), and the laminated continuous sheet S2 is smoothed by a pair of calendar means 52 (smoothing step), and the laminated continuous sheet S2 Then, a chemical solution is applied by a pair of chemical spraying means 53 (chemical solution applying process), contact embossing is applied by the contact embossing means 54 to the laminated continuous sheet S2 (contact embossing process), and the laminated continuous sheet S2 is applied by the slit means 55. Slit to make the product width of tissue paper product or multiple times the width (slit process), then slit work In a plurality of secondary master roll R of the slit has been product width or a multiple width of wound to tissue paper products layered continuous sheet S2 coaxial, formed by winding means 56.
In addition, when manufacturing the tissue paper product to which no chemical solution is applied at the manufacturing facility X5 for the secondary paper roll for tissue paper product, the laminated continuous sheet S2 is contacted from the calendar means 52 as shown by a two-dot chain line in FIG. It is only necessary to transfer directly to the embossing means 54 and flow the laminated continuous sheet S2 without passing through the chemical spraying means 53.

  Next, a tissue paper product (Example) is manufactured with the above-mentioned multi-stand type interfolder using the secondary material roll manufactured by the manufacturing method of the secondary material roll X1 for tissue paper products shown in FIG. The comparison was made with a reference example and a comparative example using the flexo transfer method.

<Base paper>
In Examples 1-6, the pulp which comprises a base paper was NBKP30% and LBKP70%. Further, a crepe rate of 19% was used. About Examples 1-6, the chemical | medical solution of the same composition as the comparative example 2 was prepared so that a viscosity might be set to 110 mPa * s (40 degreeC).
Examples 1-3 are based on the spray form by the rotor dampening system shown in FIG. 15, and Examples 4-6 are based on the spray form by the nozzle system shown in FIG.
The comparative examples in Table 2 are all commercially available products, Comparative Example 1 is a non-humidifying general-purpose tissue paper marketed by the applicant, and Comparative Examples 2 to 2 are moisturizing lotion type tissue papers. Comparative Example 2 is a lotion type tissue paper marketed by the applicant, but since Comparative Examples 3 and 4 are commercial products of other companies, they contain unknown contents.

Each parameter shown in Table 1 and Table 2 is as follows.
Rice tsubo (basis weight): Measured according to JIS P 8124 (1998). In the case of a two-ply tissue product, the average weight of a 2-ply sheet is listed.
Paper thickness: Measured using a dial thickness gauge (thickness measuring instrument) “PEACOCK G type” (manufactured by Ozaki Seisakusho) under the conditions of JIS P 8111 (1998). Specifically, confirm that there is no dust, dust, etc. between the plunger and the measuring table, lower the plunger on the measuring table, move the memory of the dial thickness gauge to adjust the zero point, and then Raise the plunger, place the sample on the test bench, slowly lower the plunger and read the gauge at that time. At this time, only the plunger is placed. The terminal of the plunger is made of metal so that a circular plane having a diameter of 10 mm is perpendicular to the plane of the paper, and the load at the time of measuring the paper thickness is about 70 gf. The paper thickness is an average value obtained by performing measurement 10 times.
Product density: The product density is the paper (2 ply) of tissue paper by “PEACOCK G type”, which is a doubled value (C) of the tissue paper product tsubo conditioned under JIS P 8111 conditions. The value is divided by the thickness (D), and the unit is expressed in g / cm ³ and three decimal places.
Dry tensile strength: Measured according to the tensile test method of JIS P 8113 (1998).
Wet tensile strength: Measured according to JIS P 8135 (1998).
Elongation rate: Measured using Minebea Co., Ltd. “Universal Tensile and Compression Tester TG-200N”.
Softness: Measured based on the handle ohm method according to JIS L1096 E method. However, the test piece was 100 mm × 100 mm in size, and the clearance was 5 mm. The measurement was performed 5 times each in the vertical direction and the horizontal direction with 1 ply, and the average value of all 10 times was defined as one decimal point and expressed in units of cN / 100 mm.
Coefficient of static friction: Measured by the following method according to JIS P 8147 (1998). Stick the tissue paper peeled on one ply to the acrylic plate so that the front side of the paper is on the outside. Wrap tissue paper around a 100 g weight with 2 plies and place it on the tissue on the acrylic plate. Tilt the acrylic plate and measure the angle at which the weight slides down. The angle measurement is performed four times in the vertical direction and four times in the horizontal direction for a total of eight times, the average angle is calculated, and the tangent value is taken as the static friction coefficient.
MMD is an average deviation MMD of the static friction coefficient. MMD is one of the indices of smoothness. The smaller the numerical value, the smoother, and the larger the numerical value, the less smooth. As a method for measuring the MMD value, as shown in FIG. 23A, a tension of 20 g / cm is applied to the contact surface of the friction element 212 in a predetermined direction (downward and rightward in FIG. 23A). While being brought into contact with the surface of the tissue paper 211, which is the measured sample, at a contact pressure of 25 g, it is moved 2 cm at a speed of 0.1 cm / s in the same direction as the direction in which the tension is applied. The friction coefficient at this time was measured using a friction feeling tester KES-SE (manufactured by Kato Tech Co., Ltd.), and the value obtained by dividing the friction coefficient by the friction distance (movement distance = 2 cm) was defined as the MMD value. The friction element 212 includes 20 piano wires P having a diameter of 0.5 mm adjacent to each other, and has a contact surface formed so that the length and the width are both 10 mm. The contact surface is formed with a unit bulging portion whose tip is formed of 20 piano wires P (curvature radius 0.25 mm). FIG. 23 (a) schematically shows the friction element 212, and FIG. 23 (b) shows an enlarged view of a portion surrounded by a dashed line in FIG. 23 (a).
Moisture content: Measured according to JIS P 8111 (1998).
Chemical solution content: The chemical solution application amount indicates the content of the chemical component in a dry state (absolutely dry) included in the unit area of tissue paper in the standard state of JIS P 8111. The content of components other than moisture in the chemical solution shall be indicated. The unit area of the tissue paper is an area of the plyed sheet viewed from a viewpoint perpendicular to the plane, and does not mean the total area of each plyed sheet and its front and back surfaces.
Chemical solution content ratio: Chemical solution application rate means that the tissue paper product with a predetermined mass conditioned under JIS P 8111 conditions is the denominator (A) (g), and the chemical solution contained in the tissue paper product with the predetermined mass The ratio of (B) divided by (A) is expressed as (%), with the mass (B) (g) excluding the moisture of (b) as a molecule. (Chemical solution content%) = (B) ÷ (A) × 100 (%)
Sensory evaluation: For Examples 1 to 6, Reference Examples 1 and 3, and Comparative Examples 1 and 2, targeting 87 consumers, softness, smoothness, thickness, moistness based on the following criteria Evaluation was performed. Moreover, about the comparative examples 3 and 4, sensory evaluation was performed for 12 different persons with different dates.
The evaluation criteria are “3” for all the results of the non-humidifying general-purpose tissue paper (Comparative Example 1) to which no chemical solution is applied, and “5”, “ “4” for those who felt “excellent”, “3” for those who felt “equivalent to the standard”, “2” for those who felt “inferior”, “notably inferior” The thing was set to “1”. In addition, the tissue-coated tissue paper is also evaluated for the presence or absence of a sticky feeling, and the evaluation criteria are “○” for “less sticky” and “×” for “obviously sticky”. did.

As can be seen from the results in Table 1 and Table 2, the secondary roll roll manufactured by the method for manufacturing a secondary roll for tissue paper products according to the present invention is used to manufacture the multi-stand type interfolder. In addition, the chemical-containing tissue paper product has a high ratio of the paper thickness (2P: 2 ply) to the rice tsubo, and the sensory evaluation is particularly high in “thickness”.
Moreover, although not described in the table, in any of Examples 1 to 5, compared with the flexo method of Reference Examples 1 to 3 and the gravure transfer method of Comparative Example 2 at the manufacturing site, the paper It was found that there was very little generation of powder and stable production was possible.

As is apparent from the above description, the present specification and drawings also disclose the following invention.
[Invention A]
An apparatus for producing a secondary web roll for tissue paper products that continuously produces a plurality of secondary web rolls for tissue paper products from a primary web roll,
Laminating means for laminating a primary continuous sheet fed from a plurality of primary raw rolls along the continuous direction to form a laminated continuous sheet;
A chemical spraying means for applying a chemical in a sprayed state to the laminated continuous sheet;
Slitting means for slitting the laminated continuous sheet so as to be a product width of tissue paper products or a multiple of the width,
Tissue paper product comprising winding means for winding each slit continuous sheet coaxially to form a product width of the tissue paper product or a plurality of secondary raw rolls of multiple widths thereof. Secondary roll roll manufacturing equipment.

[Invention B]
The manufacturing apparatus of the secondary raw material roll for tissue paper products of the invention A in which the said chemical | medical solution spraying means is performed after the said lamination | stacking means and before the said slit means.

[Invention C]
The manufacturing apparatus of the secondary raw material roll for tissue paper products of the invention B which has a smoothing process of smoothing with a calender between the said lamination | stacking means and the said chemical | medical solution spraying means.

[Invention D]
The secondary raw material for tissue paper products according to the invention B, further comprising contact embossing means for applying line-shaped contact embossing for preventing delamination on the laminated continuous sheet between the chemical spraying means and the slit means. Anti-roll manufacturing equipment.

[Invention E]
The apparatus for producing a secondary paper roll for tissue paper products according to Invention A, wherein the chemical solution is applied by a nozzle spray method.

[Invention F]
The manufacturing apparatus of the secondary raw material roll for tissue paper products of Claim 1 whose provision of the said chemical | medical solution is based on a rotor dampening spray system.

[Invention G]
A large number of the secondary web rolls obtained by the invention of any one of the above-mentioned inventions are prepared, arranged in the line direction in a multi-stand type interfolder, and a plurality of secondary web rolls fed out from each secondary web roll The secondary continuous sheet is transported along the continuous direction and stacked while being folded in the transport process. After that, a predetermined number of laminated sheets are cut to a predetermined length to form a tissue paper bundle, and this stack is stored in a storage box. An apparatus for manufacturing tissue paper products, characterized in that:

The present invention can be applied to the manufacture of tissue paper products coated with a chemical solution using a multi-stand type interfolder .

51 ... Ply process (lamination means)
52 ... Calendar means (smoothing process)
53 ... Chemical solution spraying means (chemical solution applying step)
54 ... Contact embossing means (contact embossing process)
55 ... Slit means (slit process)
56 ... Winding means (winding process)
S11, S12 ... primary continuous sheet S2 ... laminated continuous sheet JR ... primary raw roll R ... secondary raw roll

Claims (7)

A method for producing a secondary web roll for tissue paper products, wherein a plurality of secondary web rolls for tissue paper products are continuously produced from the primary web roll,
A lamination step in which a primary continuous sheet fed from a plurality of primary fabric rolls is laminated along the continuous direction to form a laminated continuous sheet;
A chemical spraying step for applying a chemical to the laminated continuous sheet in a sprayed state;
A slitting process for slitting the laminated continuous sheet so as to have a product width of tissue paper products or a multiple of the width,
A tissue paper product comprising: a winding step of winding each slit continuous sheet coaxially to form a plurality of secondary rolls having a product width of the tissue paper product or a multiple of the width of the tissue paper product. Manufacturing method for secondary raw fabric rolls.   The manufacturing method of the secondary raw material roll for tissue paper products of Claim 1 with which the said chemical | medical solution spraying process is performed after the said lamination | stacking process and before the said slit process.   The manufacturing method of the secondary raw material roll for tissue paper products of Claim 2 which has the smoothing process of smoothing with a calender between the said lamination process and the said chemical | medical solution spraying process.   The secondary for tissue paper products of Claim 2 which has the contact embossing process which performs the line-shaped contact embossing which prevents delamination with respect to the said lamination | stacking continuous sheet between the said chemical | medical solution spraying process and the said slit process. A method for producing a raw roll.   The manufacturing method of the secondary raw material roll for tissue paper products of Claim 1 whose provision of the said chemical | medical solution is based on a nozzle type spray system.   The manufacturing method of the secondary raw material roll for tissue paper products of Claim 1 whose provision of the said chemical | medical solution is based on a rotor dampening spray system.   A large number of the secondary web rolls obtained by the claims of any one of the above-mentioned claims are prepared, and these are arranged along the line direction in a multi-stand type interfolder and fed out from each secondary web roll. A plurality of secondary continuous sheets are transported along the continuous direction, stacked while being folded in the transport process, and then a predetermined number of laminated sheets are cut to a predetermined length to form a tissue paper bundle, and this stack is stored in a storage box A method for producing tissue paper products, wherein the tissue paper products are housed in the inside.

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