JP2019193714A - Tissue paper manufacturing method - Google Patents

Abstract

To enhance quality of tissue paper to be manufactured.SOLUTION: A tissue paper manufacturing method includes: a winding process for winding a base paper set in which multiple pieces of base papers in a band shape are overlapped on a roll; a feeding process for feeding out the base paper set of the roll wound in the winding process; an upstream cutting process for cutting the base paper set along the longitudinal direction of the base paper set, only in the upstream process of the winding process; and an engagement process for engaging the base papers forming the base paper set at a predetermined position corresponding to the end of the tissue paper product only in the downstream process of the feeding process.SELECTED DRAWING: Figure 5

Description

  The present case relates to a method of manufacturing tissue paper.

The following various processes are known as processes performed in the manufacture of tissue paper (see Patent Documents 1 and 2).
-Winding process: Winding a base paper set in which belt-shaped base papers are overlapped on a roll-Feeding process: Feeding out the base paper set of the roll wound in the winding process-Cutting process: Base paper set in the longitudinal direction・ Engagement process: Engage the base papers forming the base paper set in the thickness direction ・ Lamination process: Stack the base paper sets by stacking a plurality of base papers

Furthermore, various manufacturing methods listed below have been developed as manufacturing methods in which the above steps are combined.
The following manufacturing method C is mentioned as a manufacturing method with which the engagement process was combined.
-Manufacturing method C: Engaging process before a winding process As a manufacturing method combined with the cutting process, the following manufacturing methods S1 and S2 are mentioned.
-Manufacturing method S1: The cutting process is performed after the feeding process.-Manufacturing method S2: The cutting process is performed before and after the winding process.

Japanese Patent No. 3628980 Japanese Patent No. 5237250

However, the following problem C can be mentioned from the above-mentioned production method C.
・ Problem C: Poor engagement between base papers forming base paper group The above problem C is the base paper in the circumferential direction of the roll in the roll of the base paper group in which base papers are engaged as in manufacturing method C described above. However, there is a problem in that the engagement between the engaged base papers causes the engagement to be released or the base paper to be damaged. The poor engagement of the problem C may cause wrinkles and twists on the base paper set.

Moreover, the following problems S1 and S2 are mentioned from the manufacturing methods S1 and S2 described above.
・ Problem S1: Adhesion of paper dust to the base paper set ・ Problem S2: Position shift of the location where the base paper set is cut When the base paper set fed out from the roll is cut as in the above-described manufacturing method S1, When paper is cut on the downstream side of the manufacturing method in which the base paper set before being wound on a roll is cut, paper dust accompanying the cutting of the base paper set is generated on the downstream side of the manufacturing process, and the tissue paper of the product It is a problem that paper dust becomes easy to adhere to. Furthermore, when cutting each of the base paper sets fed from a large number of rolls in a multi-machine, since the base paper sets are cut at many places, paper dust is also generated at many places, It becomes easy to invite mixing.
The problem S2 described above is that, when the base paper set is cut at each of the upstream side and the downstream side as in the manufacturing method S2 described above, the setting of the cutting points in the upstream and the downstream and the alignment of the relative cutting points in the upstream and downstream are performed. This is a problem that requires complicated setting and positioning as described above to cause a deviation of a cutting portion from a desired portion. This is also a problem in that the size of the tissue paper to be produced varies.
Therefore, there is room for improvement in improving the quality of the tissue paper produced.

  The tissue manufacturing method of the present case has been devised in view of the above-described problems, and has an object to improve the quality of tissue paper to be manufactured. Note that the present invention is not limited to this purpose, and is an operation and effect derived from each configuration shown in “Mode for Carrying Out the Invention” to be described later. It can be positioned as another purpose.

  The tissue manufacturing method disclosed herein includes a winding step of winding a base paper set in which a plurality of base papers in a band shape are overlapped on a roll, and the base paper set of the roll wound in the winding step. An unwinding step; an upstream cutting step of cutting the base paper set along a longitudinal direction of the base paper set only upstream of the winding step; and a downstream side of the unwinding step only of the base paper set. An engaging step of engaging the base papers formed at a predetermined position corresponding to the edge of the tissue product.

  According to the tissue manufacturing method of this case, the quality of the tissue paper manufactured can be improved.

It is a schematic diagram which shows the outline | summary of the process which manufactures tissue paper. It is a schematic diagram which shows a paper machine. It is a schematic diagram which shows a lamination machine. It is a schematic diagram which shows a folding machine, (A) is a XX arrow line view of (B). It is a flowchart which shows the procedure which manufactures tissue paper. It is a figure which shows the modification of a folding machine.

Hereinafter, an embodiment for carrying out a method for manufacturing tissue paper (hereinafter abbreviated as “tissue manufacturing method”) will be described.
In this embodiment, upstream and downstream are determined based on the transport direction of a base paper or a base paper set in which base papers are superimposed (hereinafter, “base paper” and “base paper set” are collectively referred to as “base paper”). For the base paper, etc., three directions are defined: a longitudinal direction, a width direction, and a thickness direction. The longitudinal direction is a direction extending in a band shape on the extending surface of the base paper or the like. This longitudinal direction is along the conveying direction. The width direction is a direction orthogonal to the longitudinal direction on the extending surface of the base paper or the like. The thickness direction is a direction orthogonal to both the longitudinal direction and the width direction. Tissue paper made of base paper or the like is manufactured by cutting or dividing the base paper set in the transport direction or width direction and folding it.

[I. One Embodiment]
In the embodiment described below, as a premise for explaining the tissue manufacturing method, the configuration of an apparatus for manufacturing tissue paper (hereinafter abbreviated as “tissue manufacturing apparatus”) will be described with reference to FIGS. Thereafter, the structure of the tissue manufacturing method will be described with reference to FIG. And the effect | action and effect by the tissue manufacturing method of this embodiment are described.

[1. Configuration of tissue manufacturing equipment]
First, the process of manufacturing tissue paper will be outlined with reference to FIG.
The tissue paper manufacturing apparatus is roughly divided into three parts P ₁ , P ₂ , and P ₃ .
In the first part P ₁ , the strip-shaped base paper W is made by the paper machine 1 shown in FIG.
In the second part P ₂ , a plurality of base papers W made in the first part P ₁ are overlapped by the laminator 3 shown in FIG. When the base papers W are overlapped, a base paper set WP having a multilayer structure composed of a plurality of base papers W is manufactured. Here, a base paper set WP having a two-layer structure (so-called “2-ply”) is illustrated.
In the third part P ₃ , the base paper set WP superimposed in the second part P ₂ is folded by the folding machine 5 shown in FIG. Then, the base paper set WP is divided into predetermined transport direction dimensions.

In the first part P ₁ , the produced base paper W is wound up in a roll shape. The base paper W wound up in the first part P ₁ is transported to the second part P ₂ .
In the second part P _2, the fed-out sheet W How to superimposed the sheet set WP is wound into a roll. In the second part P ₂ , the base paper W, WP, etc. are transported at a predetermined speed (hereinafter referred to as “upstream transport speed”) V _U. The base paper set WP taken up by the second part P ₂ is conveyed to the third part P ₃ .

The roll-shaped base paper set WP transported to the third part P ₃ is fed out after a part thereof is peeled off from the outer peripheral edge. In the third part P ₃ , the base paper set WP is transported at a predetermined speed (hereinafter referred to as “downstream transport speed”) V _D that is slower than the upstream transport speed V _U.
In the present embodiment, the upstream conveyance speed V _U is set to 500 to 1500 [m / min], and the downstream conveyance speed V _D is set to 10 to 150 [m / min].

That is, the first part P ₁ is provided with the first winding part 15 (see FIG. 2) on the most downstream side. The second part P ₂ is provided with an upstream transport part P ₂₀ (simply indicated by an arrow in FIG. 1) for transporting the raw paper W, WP, etc. at the upstream transport speed V _U , and is located upstream of the upstream transport part P ₂₀ the first feeding part 30 (see FIG. 3) is provided, the second volume collected by part 38 (see FIG. 3) is provided on the most downstream of the upstream transport part P _20. The third part P ₃ is provided with a downstream transport part P ₃₀ (simply indicated by an arrow in FIG. 1) for transporting the base paper set WP at the downstream transport speed V _D , and the second part is fed to the most upstream side of the downstream transport part P _30. Part 50 (see FIG. 4) is provided. Further, a first transport part P ₁₂ is provided between the first part P ₁ and the second part P _2, and a second transport part P ₂₃ is provided between the second part P ₂ and the third part P _3. It is done.
Hereinafter, each structure of the paper machine 1, the laminator 3, and the folder 5 will be described.

[1-1. Paper machine]
The configuration of the paper machine 1 will be described in detail with reference to FIG.
The paper machine 1 is a tissue machine that makes a strip-shaped base paper W from raw materials.
The paper machine 1 is provided with a paper making part 10 for making the base paper W, and a first winding part 15 for winding the base paper W made by the paper making part 10 is also provided.

The paper making part 10 includes a wire part 11 for making a wet base paper W (wet paper) from a raw material, a press part 12 for dewatering the wet base paper W, and a dryer part 13 for drying the base paper W compressed with water. The dried raw paper W is subdivided into a calendar part 14 for smoothing. The base paper W that has passed through the calendar part 14 is wound up by the first winding part 15.
Hereinafter, the parts 11, 12, 13, 14, and 15 of the paper machine 1 will be described in the order of the manufacturing process.

<Wire part>
The wire part 11 is provided with a head box H for injecting slurry as a raw material of the base paper W. A raw material liquid in which pulp fibers are suspended is used for the slurry.
The wire part 11 is provided with two types of wire belts B _T and B _C partially wound around the outer periphery of the forming roll _RT .

These wire belts B _T and B _C are mesh-like endless belts wound around a belt conveyance roll. One of the wire belts B _T and B _C is the forming wire belt B _T wound around the slurry on the opposite side (outer peripheral side) to the forming roll _RT side. The other is conveying wire belt B _C wound around the forming roll R _T side (inner peripheral side) with respect to the slurry.
The slurry injected between the wire belts B _T and B _{C on} the outer periphery of the forming roll R _T is dehydrated, so that the wet base paper W is made.

Since the base paper W is made from the slurry when transported on the transported wire belts B _T and B _C , the pulp is oriented along the transport direction. Therefore, the base paper W has a tear strength directivity that is difficult to tear along the width direction and easy to tear along the longitudinal direction.
Base paper W is the delivery wire belt B _C, is conveyed to the next press part 12.

<Press part>
The press part 12, the conveying belt B _A water-absorbent is provided wound on a belt conveyor roll. An endless belt made of a material that absorbs water (for example, felt) is used as the transport belt B _A.
Site upstream side of the conveying belt B _A is provided in a state that it is pressed against sheet W conveyed by the conveying wire belt B _C described above.

Of the belt transport roll, the portion of the roll for urging the conveyor wire belt B _C across the sheet W, built-in suction roll R _A suction mechanism M _S for sucking the sheet W is provided. The suction roll R _A, the conveyance path of the sheet W is switched on the conveying belt B _A from the delivery wire belt B _C.
In urging portions of the conveying wire belt B _C across the sheet W, the water is squeezed from the sheet W. The base paper W thus dehydrated is transported to the next dryer part 13 by the transport belt B _A.

<Dryer part>
The dryer part 13 is provided with a drying roll R _D (also referred to as “yankee roll”) that dries the base paper W.
_A downstream portion of the transport belt B _A is urged to the drying roll _RD via the base paper W. The base paper W transported by the transport belt B _A moves so as to stick to the outer peripheral surface of the rotating drying roll _RD . The drying roll _RD heats the cylinder surface by, for example, steam introduced into the cylinder, and dries the base paper W on the cylinder surface.

The dryer part 13, the doctor blade D _D is provided for peeling the dried sheet W from the drying roll R _D. Doctor blade D _D is the cutting edge against the cylinder face of the drying roll R _D are disposed in abutting been posture. Doctor blade D _D is the base paper W is peeled from the drying roll R _D imparts crepe (crepe-like wrinkles).
The base paper W thus peeled from the drying roll _RD is conveyed to the next calendar part 14.

<Calendar part>
The calendar part 14 is provided with a pair of calendar rolls _RL . The calendar rolls _RL rotate at a speed corresponding to the transport speed of the base paper W, and are arranged to face each other with the transported base paper W sandwiched therebetween. The base paper W is pressed in the thickness direction between the calender rolls _RL and smoothed.
The base paper W that has been calendered in this way is conveyed to the next first winding part 15.

<First winding part>
The first winding part 15 is provided with a first winding roll R _W1 for winding the base paper W. The first original fabric roll W _R1 is wound band-shaped sheet W is produced on the roll R _W1 preparative first volume.
In the following description, for the Ichihara roll W _R1 of the semi-finished product (intermediate), in order to prevent confusion with the roll forming apparatus structure, "the Ichihara roll W _R1" and "first raw W _R1 ".

[1-2. Laminating machine]
The configuration of the laminator 3 will be described in detail with reference to FIG.
The laminating machine 3 is a ply machine that superimposes the base papers W. In the laminating machine 3, two first original webs W _R1 and W _R1 are installed, and the raw papers W fed out from the first original webs W _R1 and W _R1 are laminated. In this way, a base paper set WP having a two-layer structure is manufactured from the two base papers W.

In the laminating machine 3, in addition to the upstream conveying part P ₂₀ , the first feeding part 30 and the second winding part 38 described above, a laminating part 32 for superimposing the base papers W and a base paper set W on which the base papers W are superposed are provided. And an upstream cutting part 36 for cutting the above.
Here, a calendar part 33 is also set on the downstream side of the lamination part 32, and an upstream cutting part 36 is set on the downstream side of the calendar part 33. The upstream cutting part 36 is set only on the upstream side of the second winding part 38.
Hereinafter, the parts 30, 32, 33, 36, and 38 of the laminating machine 3 will be described in the order of the manufacturing process.

<First delivery part>
In the first feeding part 30, two first feeding rolls R _U1 and R _U1 each having a first original fabric W _R1 are provided, and each raw paper from the first original roll W _{R1 of} the first feeding roll R _U1 . W is paid out.
The base paper W fed out in this way is conveyed to the next lamination part 32.

<Laminated part>
The laminate part 32, laminating roll R _P is provided with two sheet W is wound by superimposing a part of the outer periphery. Two of the base paper W is superimposed in a stacked roll R _P.
Regarding the base paper set WP superposed in this way, one of the two faces (main faces) facing outward is set as the first face F ₁ (the front face F _F of one base paper W), and the other is set as the second face. Let it be F ₂ (front side F _F of the other base paper W). In other words, was what back surface F _B by superimposing each other sheet W which is opposed, base paper sets WP are laminated two sheets of the base paper W.
The base paper set WP laminated as described above is conveyed to the next calendar part 33.

<Calendar part>
In the calendar part 33, as in the calendar part 14 of the paper machine 1, the base paper set WP is pressed in the thickness direction and smoothed. This calendar part 33 is provided with two sets of calendar rolls R _L1 and R _L2 , and performs a calendar process on the base paper set WP in two stages.
The base paper set WP thus calendered is conveyed to the next upstream cutting part 36.

<Upstream cutting part>
The upstream cutting part 36, a slitter S _U cutting the sheet set WP in the longitudinal direction is provided. Slitter S _U can cut the sheet set WP in various widthwise dimension corresponding to a widthwise position of the bite. For example, the width direction position relative to the base paper sets WP is adjustable so provided blade (cutter) and blade receiving roll provided slitter S _U.

In the upstream cutting part 36, the cutting dimension of the base paper set WP is set to a predetermined width direction dimension.
The “predetermined width direction dimension” means a width direction dimension of the base paper set WP installed in the folding machine 5 (see FIG. 4). The width-direction dimension is a dimension of an end side (long side or short side) (hereinafter referred to as “standard width dimension”) or an integral multiple of a tissue paper product (hereinafter abbreviated as “tissue product”). The dimensions are mentioned. Here, since the upstream cutting part 36 is set in the laminating machine 3 as one part (one place) as a part for cutting the base paper set WP, the cutting dimension of the base paper set WP by the upstream cutting part 36 is set to the standard width dimension. Is set.
Each base paper set WP cut as described above is conveyed to the next second winding part 38.

<2nd winding part>
The second volume collected by part 38, similarly to the first volume preparative Part 15, the roll R _W2 preparative second volume for taking up the sheet set WP is provided. Second original fabric roll W _R2 (roll) is produced on the roll R _W2 preparative second volume is wound band-shaped sheet sets WP. The second original fabric roll W _R2 is also abbreviated as “second original fabric W _R2 ” in order to prevent confusion with the roll forming the device structure.
In the second winding part 38, a plurality of second original fabrics W _R2 are arranged coaxially, and these second original fabrics W _R2 are wound concentrically.

[1-3. Folding machine]
The configuration of the folding machine 5 will be described in detail with reference to FIG.
The folder 5 is an interfolder that folds the base paper set WP. The folding machine 5 employs a so-called multi-stand type interfolder (also referred to as “multiple machine”), which corresponds to the number of sheets packed in the product state (the number of sheets accommodated in the tissue box). A number of second webs W _R2 are installed.

In addition to the downstream transport part P ₃₀ and the second feeding part 50 described above, the folding machine 5 is provided with an engaging part 53 that engages the base papers W forming the base paper set WP. In addition, a folding part 56 for folding the base paper set WP, a split part 57 for splitting the folded base paper set WP, and a packaging part 58 for the split base paper set WP are provided.
In the folding machine 5, two types of guide parts 51 and 52 for guiding the conveyance of the base paper set WP are also set. One, the direction is varied in the unloading direction D _O the conveying direction of the second feeding part 50 at a second original fabric W sheet sets WP fed from _R2 from the loading direction D _I, for guiding the conveyance of the sheet set WP Guide Part 51. The other one, while crimping the second feeding part 50 at a second original fabric W sheet sets WP fed from _R2 in the thickness direction, a spelling guide part 52 for guiding the conveyance of the sheet set WP.

  Here, the direction guide part 51 is set on the downstream side of the second feeding part 50, and the binding guide part 52 is set on the downstream side of the direction guide part 51. An engagement part 53 is set on the downstream side of the binding guide part 52. The engaging part 53 is set only on the downstream side of the second feeding part 50. A folding part 56 is set on the downstream side of the engaging part 53.

Two second webs W _R2 are installed (for example, side by side) in one second feeding part 50, and two sets of two second webs W _R2 are installed from one second feeding part 50. Tissue paper is manufactured. That is, the same number of second feeding parts 50 as half of the total number of tissue papers (one box of tissue paper) packaged in a product state are installed.
The guide parts 51 and 52, the engaging part 53, and the folding part 56 are provided at a number of locations, like the second feeding part 50. On the other hand, the dividing part 57 and the packaging part 58 are provided at one location downstream of the folding machine 5.

In addition, as a preparation for feeding the paper set WP in the second feeding part 50, the base paper sets WP is stripped from the outer peripheral edge of the second original fabric W _R2. For example, the operator can manually remove the base paper set WP from the outer peripheral edge of the second raw fabric W _R2 to remove dirt and scratches that may adhere to the stacker 3 during transportation or installation. This ensures the quality of tissue products.
Hereinafter, each part 50, 51, 52, 53, 56, 57, 58 of the folding machine 5 will be described in the order of the manufacturing process.
The upstream parts 50, 51, 52, 53, and 56 will be described in detail with reference to FIG. 4A, and the downstream parts 56, 57, and 58 will be described in detail with reference to FIG.

<Second delivery part>
In the second feeding part 50, the second feed roll R _U2 of the second original fabric W _R2 is installed is provided, the base paper sets WP is fed from the second raw W _R2 of the second feed roll R _U2.
The base paper set WP fed out in this way is conveyed to the next direction guide part 51.

<Direction guide part>
The direction guide part 51, the direction guide roll R _E is provided for changing the conveying direction of the sheet set WP. Conveying direction of the sheet set WP is transported in the direction the guide roll R _E is carried direction D _I. On the other hand, the transport direction of the sheet set WP is transported in the direction the guide roll R _E is out direction D _O.

The unloading direction D _O is constant regardless of the winding diameter (diameter thickness dimension) of the second raw fabric W _R2 . In contrast, as the winding diameter of the second original fabric W _R2 with the feeding of the sheet set WP becomes smaller, carrying direction D _I changes.
Here, as illustrated by the solid line in FIG. 4 (A), carrying direction D _I of the base paper sets WP fed from the second raw W _R2 of the large diameter is obliquely downward. The carrying direction D _I, the second original fabric W _R2 becomes small as the base paper sets WP is fed out, as illustrated by the two-dot chain line in FIG. 4 (A), the inclination angle with respect to the horizontal direction is reduced. The carry-out direction D _O is set in a direction slightly inclined with respect to the vertically upward direction.

Two directions D _I, the angle of D _O described above are limited to an acute angle by the arrangement position of the direction guide roll R _E. In other words, the direction guide roll _RE is disposed at a position that limits the angle between the carry-in direction D _I and the carry-out direction D _O to an acute angle. Here it is arranged direction guide rolls R _E below the second feed roll R _U2 disposed in the second original fabric W _R2.
The base paper set WP guided in this way is conveyed to the next binding guide part 52.

<Spelling guide part>
The spelling guide part 52 is provided with a pair of spelling rolls R _B. Spelling roll R _B is rotated at a speed corresponding to the downstream transport speed V _D, they are arranged opposite to each other in a state sandwiched sheet sets WP is transported. Binding states in the thickness direction of the base paper W constituting the base paper sets WP between the and what spelling roll R _B is maintained.
The base paper set WP in which the binding state of the base papers W is held in this way is conveyed to the next engagement part 53.

<Engagement part>
The engagement part 53 is provided with an engagement roll _RC that engages a part of the base paper set WP in the thickness direction. The engaging roll R _C, convex roll R _C1 and receiving roll R _C2 are provided. A convex portion is provided on the outer periphery of the convex roll R _C1 , and this convex portion is abutted against the outer periphery of the receiving roll R _C02 and received. The convex roll R _C01 and the receiving roll R _C02 rotate at a speed corresponding to the conveyance speed of the base paper set WP, and are arranged to face each other with the base paper set WP interposed therebetween.
The convex portion of the convex roll R _C1 is abutted against the outer periphery of the receiving roll R _C2 through the sheet set WP, a state in which the base paper sets WP is entangled in the thickness direction. In other words, the two layers of the base paper set WP are engaged with each other, and the layers of the two-layer structure are integrally engaged.

The outer periphery of the receiving roll R _C2 is made of metal, and a structure in which the convex portion of the convex roll R _C1 does not easily protrude toward the receiving roll R _{C2 with} respect to the base paper set WP is adopted. Therefore, the base paper set WP engaged by the engagement part 53 has a concave portion on the convex roll R _C1 side (for example, a linear portion along the transport direction), and the receiving roll R _C2 side is substantially flat. Make. Such an engagement structure is also referred to as “crimper” or “contactor embossing”, and is structurally different from embossing having unevenness on both sides used for kitchen paper, toilet rolls, and the like.
The engaging part 53 engages the base papers W forming the base paper set WP at a predetermined location corresponding to the edge of the tissue product. In this way, so-called “edge embossing” is formed into the base paper set WP.
The base paper set WP subjected to the engagement process as described above is conveyed to the next folding part 56.

<Folding part>
The folding part 56 employs a mechanism for folding the base paper set WP using the folding plate P as a folding mechanism (folding plate type, the folding form of the base paper set WP is a pop-up type). The folding part 56 is provided with various conveying rolls in addition to the folding plate P for folding the base paper set WP.
The folding part 56 folds the base paper set WP with the first face F ₁ on the outside and the second face F ₂ on the inside, and the folds formed by the folding plates P are along the transport direction of the base paper set WP. Form.
The folded base paper set WP is stacked with the other base paper set WP folded through the other second feeding part 50, the guide parts 51 and 52, and the engaging part 53 that are arranged side by side. _{By I} , it is conveyed to the next parting part 57.

<Parting part>
The cutting part 57 is provided with a cutter C for cutting the base paper set WP along the width direction. The base paper set WP cut in this way is divided continuously in the longitudinal direction.
The cutter C can cut the base paper set WP into various sizes in the transport direction according to the cutting timing (here, the vertical movement control interval). For example, the longer the cutting interval of the cutter C is, the longer the distance that the base paper set WP is transported after the cutting is, so that the base paper set WP having a long transport direction dimension is cut.

The division dimension of the base paper set WP is set to a predetermined conveyance direction dimension.
The “predetermined transport direction dimension” means a dimension of an end side orthogonal to an end side of the completed tissue paper cut to the above-described standard width dimension. Specifically, the dimension set as the length of the edge along the longitudinal direction of the tissue box in the tissue paper is set as a predetermined conveyance direction dimension.
Thus, the sheet-like base paper set WP divided by the dividing part 57 is tissue paper before packaging, and is conveyed to the next packaging part 58.

<Packaging part>
In the packaging part 58, the base paper set WP divided in the dividing part 57 is accommodated in a packaging carton 59 (tissue box).
When packaging is completed in this way, a boxed tissue paper is completed.

[2. Configuration of tissue manufacturing method]
Next, a method for producing tissue paper using the above-described apparatus will be described.
In this tissue manufacturing method, in the various parts described above in the configuration of the tissue manufacturing apparatus, a process in which “part” in the name is replaced with “process” is performed. For example, the second part P ₂ is laminated in the second part P ₂ , and the third part P ₃ is folded in the third part P ₃ .
Hereinafter, the steps of the tissue manufacturing method will be described in order with reference to FIG.

In this method, first, the first process (steps S10 and S15) corresponding to the manufacturing method of the paper machine 1 is performed. Then, the 1st conveyance process (step S20) which conveys the 1st original fabric W _R1 wound up with the paper machine 1 to the laminating machine 3 is implemented.
Then, the 2nd process (Steps S30-S38) corresponding to the manufacturing method of lamination machine 3 is carried out. Then, the second transportation process for transporting the second original fabric W _R2 taken up by the laminating machine 3 to the folding machine 5 (step S40) is performed.
And the 3rd process (Steps S50-S58) corresponding to the manufacturing method of folding machine 5 is carried out.

In the first process, a papermaking process (step S10) corresponding to the manufacturing method of the papermaking part 10 is performed. In this papermaking process, the wet base paper W is dried from the raw material slurry, and the dry base paper W is manufactured.
And the 1st winding process (step S15) which winds up the base paper W by the 1st winding part 15 is implemented.

In the second step, an upstream conveyance step of conveying the base paper W, WP at the upstream conveyance speed V _U from the time when the raw paper W is fed out by the first feeding part 30 until the raw paper set WP is taken up by the second winding part 20 ( Steps S30 to S38) are performed.
In the second process, a first feeding process (step S30) for feeding the base paper W by the first feeding part 30 is performed. Subsequently, the back surface F _B if stacking step of mutually superimposed base paper W so as to face the (step S32) is performed in the stacking part 32.

Then, a calendar process (step S33) is performed in which the base paper set WP is pressed and smoothed by the calendar part 33.
Next, an upstream cutting step (step S36) is performed in which the upstream cutting part 36 cuts the base paper set WP into a predetermined width direction dimension.
Then, the second volume preparative step winds the base paper sets WP Part 20 preparative second volume to the second original fabric W _R2 (step S38, the winding process) is performed. In the second winding process, a plurality of second original fabrics W _R2 arranged coaxially are wound.

In the third step, the base paper set WP is transported at the downstream transport speed V _D until the base paper W folded by the dividing part 57 is divided into a predetermined transport direction dimension after the base paper set WP is fed by the second feeding part 50. The downstream conveyance process (steps S50 to S56) to be performed is performed.
In the third step of this embodiment, prior to feeding the sheet set WP in the second feeding part 50, peeling process of stripping the sheet set WP from the outer peripheral edge of the second original fabric W _R2 (step S48) is also performed Is done.

In the third process, a second feeding process (step S50, feeding process) for feeding the base paper W by the second feeding part 50 is performed. Thereafter, a direction guide step (step S51) is performed in which the conveyance direction is changed from the carry-in direction D _I to the carry-out direction D _O by the direction guide roll R _E to guide conveyance of the base paper set WP. Then, spelling guide step for guiding the conveyance of the sheet set WP with crimped in the thickness direction in spelling roll R _B (step S52) is performed.
Thereafter, an engaging step (step S53) is performed in which the base paper W forming the base paper set WP is engaged at a predetermined position corresponding to the edge of the tissue product by the engaging part 53.

Subsequently, a folding step (step S56) of folding the base paper set WP in the folding part 56 is performed.
Thereafter, a dividing step (step S57) is performed in which the base paper set WP folded by the folding part 57 is cut into a predetermined dimension in the transport direction.
And the packaging process (step S58) which wraps the base paper set WP (tissue paper) in the carton 59 in the packaging part 58 is performed.
The tissue paper is manufactured in such a procedure.

[3. Action and effect]
Since the tissue manufacturing method disclosed in the present embodiment is configured as described above, the following operations and effects can be obtained.
Hereinafter, the actions and effects relating to the respective steps will be described in detail in the order of the engagement step, the cutting step, and other steps.

[3-1. Engagement process]
First, the action and effects relating to the engagement process will be described.
(1) In the manufacturing method in which the base papers forming the base paper set before being wound into a roll shape are engaged with each other, the base paper is displaced in the circumferential direction of the roll in the roll-shaped raw material wound after the base papers are engaged with each other. However, there is a possibility that the engagement between the engaged base papers may be canceled or the base paper may be damaged (for example, a hole is opened).
In contrast to the winding process that may weaken the engagement between the base papers in this way, in the present manufacturing method, the engaging process is set on the downstream side. Specifically, it engages the engagement step was what base paper W constituting the second feeding step at a second original fabric W sheet sets WP fed from _R2. Thus, since the winding process does not exist downstream of the engaging process, the engaged state of the base papers W forming the base paper set WP can be maintained.
Therefore, the quality of the tissue paper manufactured can be improved.

[3-2. Cutting process]
Next, actions and effects relating to the cutting process will be described.
Since the upstream cutting process with the generation of paper dust is set upstream of the winding process, paper for tissue products is compared with the manufacturing method in which the cutting process is set downstream of the second feeding process. Powder adhesion and contamination can be suppressed.
Furthermore, in the manufacturing method in which each of the base paper sets fed out from a large number of original fabrics in a multi-machine is cut, paper dust is generated in many places, and the paper powder is attached and mixed. On the other hand, since the upstream cutting process of this manufacturing method is set in one place with the laminating machine 3, adhesion and mixing of paper dust are suppressed significantly.

Alternatively, in the manufacturing method in which the cutting process is set not only upstream from the second winding process but also downstream from the second feeding process, setting of cutting positions and relative positioning of the relative cutting positions in the upstream and downstream respectively. is required. Such complicated setting and positioning may cause a deviation of a cutting portion from a desired portion. This may cause variations in the size of the tissue product.
On the other hand, since the upstream cutting process is performed only on the upstream side of the second winding process, the cutting location can be easily set. Furthermore, since the one-stage upstream cutting process is performed in the laminating machine 3, the above-described relative alignment is also unnecessary. Thus, variation in the size of tissue products can be suppressed.
Therefore, the quality of the tissue paper manufactured can be improved.
In addition, since the cut base paper set WP is wound up as a plurality of second raw fabrics W _R2 arranged coaxially in the second winding step, the winding shafts of the plurality of second raw fabrics W _R2 and the Winding power can be shared. Therefore, it contributes to simplification of apparatus cost and control configuration.

[3-3. Other processes]
Finally, actions and effects relating to other processes will be described.
(1) Since the conveyance of the base paper set WP is guided in the direction guide process by changing from the carry-in direction D _I to the carry-out direction D _O , the tension applied to the base paper set WP fed out in the folding machine 5 is maintained. Easy to be. Therefore, it is possible to suppress the positional deviation between the base papers W forming the base paper set WP, and it is also possible to suppress the occurrence of wrinkles and twists.
In this way, the base paper set WP can be stably conveyed by the folding machine 5.

(2) Further, since the conveyance of the base paper set WP is guided while being crimped in the thickness direction in the binding guide process, the positional deviation between the base papers W forming the base paper set WP can be suppressed. Also from this point, the base paper set WP can be stably conveyed by the folding machine 5.
In addition, since the binding guide process is set upstream of the engagement process, the positional deviation between the base papers W is suppressed with respect to the base paper set WP before the base papers W are engaged in the engagement process. be able to.
(3) A relatively low speed is set based on the setting of the transport speed that the downstream transport speed V _D in the downstream transport process in the folding machine 5 is slower than the upstream transport speed V _U in the upstream transport process in the stacker 3. An engagement process is set in the folding machine 5. From this, the base paper W by an engagement process can be engaged reliably, and the engagement quality of the sheets which make a tissue product can be improved.

[II. Modified example]
The above-described embodiment is merely an example, and there is no intention to exclude various modifications and technical applications that are not explicitly described in this embodiment. Each configuration of the present embodiment can be implemented with various modifications without departing from the spirit thereof. Further, it can be selected as necessary, and can be appropriately combined.

For example, you may add the part which apply | coats a chemical | medical agent to base paper. Examples of the drug include various liquid agents such as a moisturizer and a fragrance, medical ingredients, a refreshing agent, and a pigment. As the humectant, a humectant in which glycerin or sorbitol is dissolved in water can be used.
The application part (application process) can be set at an arbitrary location in a laminating machine or a folding machine. As a coating method using the coating part, a known method such as a gravure method or a roll coating method can be employed.

  Further, as shown in FIG. 6, a rotary interfolder may be used for the folding machine 5 ′. In the folding machine 5 ′, a set of base paper sets WP ′ and WP ′ is folded and stacked, and a fold along the width direction of the base paper set WP ′ is formed. Thus, according to the folding machine 5 'in which a set of base paper sets WP' and WP 'is installed, compared to the above-described multi-stand type folding machine 5, it is more than the folding part (folding process). The number of installations (number of processes) of each part (each process) on the upstream side can be suppressed. Therefore, the apparatus cost and the installation cost of the apparatus can be reduced.

In addition, the engagement part (engagement step) is not limited to a shape in which one surface is substantially flat, and the base papers may be engaged with each other in a form having irregularities on both surfaces.
Other types such as a long net type and a circular net type may be used for the wire part, and a multi-cylinder (cylinder dryer) roll may be used for the dryer part.

DESCRIPTION OF SYMBOLS 1 Paper machine 3 Laminating machine 5,5 'Folding machine 10 Paper making part 15 1st winding part 30 1st feeding part 32 Laminating part 33 Calendar part 36 Upstream cutting part 38 2nd winding part 50 2nd feeding part 51 Direction Guide Part 52 spelling guide part 53 engaging the part 56 folded part 57 dividing part 58 packaging Part 59 cartons C cutter D _D doctor blade F _F front surface F _B back surface F ₁ first surface F ₂ second side P ₁ first Part P ₂ 2nd part P ₃ 3rd part P ₁₂ 1st transport part P ₂₃ 2nd transport part R _C engaging roll R _D drying roll R _E direction guide roll R _P laminating roll R _T forming roll R _U1 , R _U2 feed roll R _W1, R _W2 winding roll S _U slitter W, W 'base paper (papermaking product)
W _R1 first fabric (roll)
W _R2 2nd roll (roll)

Claims (5)

A winding process in which a base paper set in which a plurality of base papers in a belt shape are overlapped is wound around a roll;
A feeding step of feeding out the base paper set of the roll wound in the winding step;
An upstream cutting step of cutting the base paper set along the longitudinal direction of the base paper set only on the upstream side of the winding step;
An engagement step of engaging the base papers forming the base paper set at a predetermined position corresponding to an edge of the tissue product only on the downstream side of the feeding step. A direction guide step for guiding the conveyance of the base paper set by changing the transport direction of the base paper set fed from the roll in the feeding step from a carry-in direction to a carry-out direction;
2. The tissue manufacturing method according to claim 1, wherein in the direction guide step, an angle formed by the carry-in direction and the carry-out direction is limited to an acute angle. 3. The tissue manufacturing method according to claim 1, further comprising a binding guide process that guides conveyance while pressing the base paper set in a thickness direction on the downstream side of the feeding process. 4. The tissue manufacturing method according to claim 3, wherein the binding guide process is set upstream of the engagement process. An upstream conveying step of conveying the base paper set of the winding step and the upstream cutting step at an upstream conveying speed;
5. A downstream transport step for transporting the base paper set in the feeding step and the engaging step at a downstream transport speed that is slower than the upstream transport speed. 6. Tissue manufacturing method.

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