JP2022096999A - Device and method for producing sanitary tissue paper roll - Google Patents

Abstract

To provide a device and method for producing a sanitary tissue paper roll capable of easily executing selective formation of embossment.SOLUTION: A device for producing a sanitary tissue paper roll comprises: sheet delivery means for delivering a sheet from a raw fabric roll; an embossment processing part capable of forming embossment on the delivered sheet; and sheet winding means for winding the sheet. The embossment processing part comprises a roll set formed of: an embossment roll and a plane roll arranged separately from each other; and a backup roll selectively displaceable between a first position of contacting the embossment roll, and a second position of contacting the plane roll. When the embossment is formed on the sheet, the backup roll is displaced to the first position so as to allow the sheet to pass through a first paper passage between the backup roll and the embossment roll, and when the embossment is not formed on the sheet, the backup roll is displaced to the second position so as to allow the sheet to pass through a second paper passage between the backup roll and the plane roll.SELECTED DRAWING: Figure 2

Description

The present invention relates to an apparatus and method for producing a sanitary tissue paper roll, and more particularly to an apparatus and method for producing a hygienic tissue paper roll capable of easily performing selective formation of embossing.

The sanitary tissue paper roll includes an embossed product in which embossing is formed on the sanitary tissue paper and a no-embossed product in which embossing is not formed. For example, in the case of a toilet roll, a dedicated manufacturing device is used depending on whether or not the toilet paper is embossed, and a large installation space is required to install the manufacturing device.

Japanese Unexamined Patent Publication No. 2020-108826

In order to reduce the installation space, in the manufacturing equipment for embossing, an embossing roller should be detachably provided, and when manufacturing a no-embossed product, a plain roll should be attached instead of removing the embossing roll to prevent embossing. Can be considered. However, in this case, there is a problem that the replacement work of the plain roll and the embossed roll becomes complicated.

It is an object of the present invention to provide a hygienic tissue paper roll manufacturing apparatus and manufacturing method capable of selectively forming embossing in a compact space and with a simple operation.

As a result of diligent studies to solve the above problems, the present inventor has a sheet feeding function for feeding a sheet from the original roll from which the sheet is wound, and a sheet feeding function capable of forming embossing on the drawn sheet. It is a sanitary thin paper roll manufacturing apparatus provided with an embossed portion and a sheet winding function for winding the sheet in this order, and the embossed portion includes embossed rolls and plain rolls arranged apart from each other. It is equipped with a roll set consisting of a roll set that is selectively displaceable at a first position that is in contact with the embossed roll and away from the plane roll and a second position that is in contact with the plain roll and away from the embossed roll. When embossing is formed, the backup roll is displaced to the first position and the sheet is passed through the first paper path passing between the backup roll and the embossing roll, and when embossing is not formed on the sheet, the backing is performed. The above problem can be solved by a sanitary thin paper roll manufacturing apparatus characterized in that the roll is displaced to a second position and the sheet is passed through a second paper path passing between the backup roll and the plain roll. I found.

Specifically, the present invention has the following configurations.
[1] A sheet feeding function for feeding the sheet from the original roll from which the sheet is wound, an embossed portion configured to be able to form emboss on the drawn sheet, and a sheet winding function for winding the sheet. A sanitary tissue paper roll manufacturing device equipped in this order.
The embossed portion selectively has an embossed roll and a plain roll arranged apart from each other, a first position in contact with the embossed roll and separated from the plane roll, and a second position in contact with the plain roll and separated from the embossed roll. Equipped with a roll set consisting of a backup roll that can be displaced in
When embossing the sheet, the backup roll is displaced to the first position and the sheet is passed through the first paper path passing between the backup roll and the embossing roll, and when the sheet is not embossed, the sheet is not embossed. An apparatus for producing sanitary tissue paper rolls, characterized in that the backup roll is displaced to a second position and the sheet is passed through a second paper path passing between the backup roll and the plain roll.
[2] The paper feed rate Ve by the embossing roll and the backup roll for the sheet passing through the first paper passing path and the paper feeding speed Vp by the plain roll and the backup roll for the sheet passing through the second paper passing path are expressed by the formulas. The device for producing a sanitary tissue paper roll according to [1], which is controlled so as to satisfy Ve <Vp.
[3] The sanitary tissue paper roll manufacturing apparatus according to [1] or [2], wherein the sheet feeding function is configured so that a sheet can be fed from each of a plurality of raw fabric rolls.
[4] The feature is that a plurality of roll sets are provided, and sheets unwound from each of the plurality of raw fabric rolls can be passed through the same or different roll sets among the plurality of roll sets. The sanitary tissue paper roll manufacturing apparatus according to [3].
[5] An embossed roll unit for joining is further provided downstream of the roll set, and the sheet sent out from the roll set does not pass through the paper passing path passing through the embossed roll unit for joining and the embossed roll unit for joining. The device for producing a sanitary tissue paper roll according to any one of [1] to [4], which comprises a paper-passing route.
[6] Includes a sheet unwinding step of unwinding the sheet from the raw roll from which the sheet is wound, and a sheet winding step of winding the sheet to form a winding roll.
A roll set that is arranged between the original roll and the take-up roll so that embossing can be selectively formed on the sheet, and the embossing rolls and plain rolls arranged so as to be separated from each other and the embossing. Using a roll set consisting of a backup roll that is selectively displaceable at the first position in contact with the roll and the second position in contact with the plain roll.
When embossing the sheet, the backup roll is displaced to the first position and the sheet is passed through the first paper path passing between the backup roll and the emboss roll.
Manufacture of sanitary tissue paper rolls characterized in that when the sheet is not embossed, the backup roll is displaced to a second position and the sheet is passed through a second paper path between the backup roll and the plain roll. Method.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a sanitary tissue paper roll manufacturing apparatus and a manufacturing method capable of selectively forming embossing in a compact space and with a simple operation.

It is a figure which shows the structural example of the toilet roll manufactured by the embodiment of this invention. It is a figure which shows one structural example of the manufacturing apparatus by embodiment of this invention. It is a figure which shows another structural example of the manufacturing apparatus by embodiment of this invention.

The hygienic thin paper roll manufacturing apparatus and manufacturing method according to the embodiment of the present invention will be described with reference to the drawings. In the figure, the same reference numerals indicate the same or similar configurations. The following embodiments and drawings are for illustrative purposes only and are not intended to limit the invention.

(First Embodiment)
(Hygiene tissue paper roll)
FIG. 1 is a schematic perspective view for explaining a configuration example of a sanitary tissue paper roll manufactured by the sanitary tissue paper roll manufacturing apparatus and the manufacturing method according to the embodiment of the present invention.

1 (a) to 1 (f) show non-limiting examples of the toilet roll 10 that can be manufactured by the manufacturing apparatus and manufacturing method according to the embodiment of the present invention.

It is generally known that toilet roll products include embossed products in which embossing is formed on toilet paper and non-embossed products in which embossing is not formed. The embossing refers to a configuration in which a convex portion is provided on one surface of both surfaces of the sheet and an embossed concave portion formed on the back side of the embossed convex portion is provided on the other surface. As the embossing pattern, a dotted pattern, a linear pattern formed on the sheet over substantially the entire area of the paper surface, or an embossing pattern obtained by combining these can be applied.

In addition, toilet roll products include single-ply products consisting of one sheet, two-ply products consisting of two sheets, and three-ply products consisting of three sheets, depending on the number of sheets constituting the toilet paper. It is known. A product consisting of two or more sheets is also collectively referred to as a multiple ply product.

Product design such as the presence or absence of embossing and the number of plies can be determined in consideration of required qualities such as touch (softness), suppleness, bulkiness, strength, water absorption, and quality (luxury).

The toilet roll 10 shown in FIG. 1 (e) is a no-embossed product and a single-ply product. Specifically, the toilet roll 10 is a so-called single-ply toilet paper 13 made of one sheet 11 wound around a paper tube 14 which is a cylindrical core in a roll shape by a predetermined length. ..

The toilet roll 10 shown in FIG. 1 (a) is an embossed product and a single-ply product. In the toilet roll 10 shown in FIG. 1 (e), an emboss 11a (emboss 13a) is formed on the sheet 11 (toilet paper 13) so as to project to one side over the entire surface (entire surface) of the sheet 11. The difference is that they are. In this example, the toilet paper 13 has an embossed concave portion on the outer surface side of the roll of the toilet roll 10 and an embossed convex portion on the inner surface side so that a good touch feeling can be obtained when the toilet roll 10 is touched. It is being wound around. The shape of the embossed pattern shown through FIG. 1 is exemplary and does not limit the present invention.

The toilet roll 10 shown in FIGS. 1 (b), (c) and (d) is an embossed product and is a 2-ply product. These toilet rolls 10 have a different number of plies from the toilet rolls 10 shown in FIG. 1 (a).

More specifically, in FIGS. 1 (b) and 1 (c), the toilet paper 13 includes the sheets 11 and 12 which are overlapped with each other, and projects toward one side over the entire surface (entire surface) of the sheets. The embossed 13a is formed. The embossing of this example is a so-called single embossing, and the sheets 11 and 12 are formed with embossing 11a and 12a corresponding to the shape and position of the pattern of the embossing 13a, respectively. The toilet paper 13 is wound so that the embossed concave portion is located on the outer surface side of the roll of the toilet roll 10 and the embossed convex portion is located on the inner surface side so that a good feel is obtained when the toilet roll 10 is touched. There is.

In FIG. 1 (d), the toilet paper 13 includes sheets 11 and 12 which are overlapped with each other. The embossing of this example is a so-called double embossing, and the sheets 11 and 12 are formed with embossing 11a and 12a projecting to one surface side over the entire surface (entire surface) of the paper, respectively. In this example, the toilet paper 13 not only gives a good feel when touching the toilet roll 10, but also gives a good feel on both sides of the toilet paper 13 pulled out from the toilet roll 10. , The embossed recesses appear on both sides of the toilet paper 13. That is, the embossed convex portion of the sheet 11 and the embossed convex portion of the sheet 12 face each other, and the embossed concave portion of the sheet 11 and the embossed concave portion of the sheet 12 are configured to appear on both outer surfaces of the toilet paper. In this example, the embossed 11a and the embossed 12a have different patterns.

Further, in FIGS. 1 (c) and 1 (d), a portion for joining the sheets 11 and 12 to the toilet paper 13 in order to prevent the plies of the sheets 11 and 12 constituting the toilet paper 13 from peeling off. A specific embossed 13b (that is, not over the entire surface of the paper) is formed. As a result, the sheet 11 and the sheet 12 are formed with the joining embosses 11b and 12b corresponding to the shapes of the joining embosses 13b, respectively.

Partial embossing formed for this purpose is also referred to as joining embossing. Further, the embossing for joining is often provided so as to avoid the central portion in the width direction (CD direction) of the toilet paper, which is the main area of use of the toilet paper 13. For example, both side edges of the toilet paper in the width direction are provided. The portion is provided so as to extend along the longitudinal direction (MD direction) thereof, and is also referred to as edge embossing. The embossing for joining is preferably formed so as not to protrude outward in the thickness direction from both the front and back surfaces of the toilet paper 13 from the viewpoint of a feeling of touch and resistance to peeling.

In the case of a so-called double embossed product in which the sheet 11 and the sheet 12 are not integrally embossed as shown in FIG. 1 (d), the embossing for joining is preferably provided.

In (b) of FIG. 1, the embossing for joining is not formed. In a single embossed product as in the example of FIG. 1B, the two sheets 11 and 12 are integrated by the embossing 13a formed in common with the entire laminated sheets 11 and 12, and the two sheets 11 and 12 are hard to be peeled off. May be. In such cases, the embossing for joining is not an essential component.

The toilet roll 10 shown in FIG. 1 (f) is a no-embossed product and a 2-ply product. Specifically, the toilet roll 10 is a so-called two-ply toilet paper 13 composed of two sheets 11 and 12 wound around a paper tube 14 which is a cylindrical core in a roll shape by a predetermined length. Is. Ply peeling is likely to occur in multiple ply products without embossing. Therefore, in this example, the joining embosses 13b (11b, 12b) for preventing the ply peeling of the overlapped sheets 11 and 12 are preferably formed on the toilet paper 13.

(Sheet)
The sheets 11 and 12, which are the constituent elements of the toilet paper 13, are obtained by making a slurry containing a pulp component which is a fiber raw material.

(Pulp component)
Examples of the pulp component include wood pulp, non-wood pulp, and deinked pulp. Examples of wood pulp include broadleaf pulp (blightwood kraft pulp (LKP)), coniferous tree pulp (coniferous kraft pulp (NKP)), sulfate pulp (SP), dissolved pulp (DP), soda pulp (AP), and unbleached craft. Examples thereof include chemical pulp such as pulp (UKP) and oxygen bleached kraft pulp (OKP). Examples thereof include semi-chemical pulp such as semi-chemical pulp (SCP) and chemiground wood pulp (CGP), mechanical pulp such as crushed wood pulp (GP) and thermomechanical pulp (TMP, BCTMP), but are not particularly limited. Examples of the non-wood pulp include cotton pulp such as cotton linter and cotton lint, non-wood pulp such as hemp, straw and bagasse, cellulose isolated from sea squirts and seaweed, chitin, chitosan and the like, but are not particularly limited. .. Examples of the deinked pulp include deinked pulp made from recycled paper, but the pulp is not particularly limited. As the pulp component, one of the above may be used alone, or two or more of them may be mixed and used. Since these pulp components greatly affect the quality of the toilet paper 13, they are appropriately blended in a predetermined type and blending ratio according to the required quality.

For example, as the pulp component, at least one selected from softwood pulp and hardwood pulp can be preferably used. The softwood pulp has long fibers and is strong, and can impart strength to the thin paper to be made. In addition, hardwood pulp has short fibers and is supple, and can provide uniformity, texture, softness, etc. to the tissue paper to be made. In the embodiment of the present invention, it is preferable to use softwood pulp and hardwood pulp in combination, and it is more preferable to use softwood kraft pulp (NKP) and hardwood kraft pulp (LKP) in combination.

When softwood pulp and broadleaf pulp are used in combination as a pulp component, the L / N ratio indicating the mixing ratio (mass ratio) of softwood pulp and broadleaf pulp is preferably 10/90 to 90/10, for example. It is more preferably 20/80 or more, further preferably 30/70 or more, still more preferably 80/20 or less, still more preferably 70/30 or less.

(Optional ingredient)
Various chemicals may be added to the sheets 11 and 12 as optional components for the required quality and stable operation. Examples of the optional component include a dry paper strength agent, a wet paper strength agent, a softener, a bulking agent, a dye, a fragrance, a dispersant, a drainage improver, a pitch control agent, a yield improver, a sizing agent, and the like. Can be done. Examples of the dry paper strength agent include cationized starch, polyacrylamide (PAM), carboxymethyl cellulose (CMC) and the like. Examples of the wet paper strength agent include polyamide epichlorohydrin, urea, melamine, and heat-crosslinkable polyacrylamide. Examples of the softener include anionic surfactants, nonionic surfactants, cationic surfactants, and amphoteric ionic surfactants. The above optional components may be used alone or in combination of two or more.

In the case of a plurality of ply products, the types (paper quality such as material and physical properties) of the plurality of sheets 11 and 12 used may be the same or different depending on the required quality and the like.

As described above, a non-limiting example of the configuration of the toilet roll 10 that can be manufactured according to the embodiment of the present invention has been shown. These configuration examples are for illustrative purposes only, and the shape of the embossing pattern, the position of the embossing for joining, the number of plies, and the like are not limited to those shown in the illustration. Further, although not shown in FIG. 1, the toilet roll 10 is formed with breaking perforations for separating the toilet paper 13 along the width direction at predetermined intervals along the longitudinal direction of the toilet paper 13. You may.

(Manufacturing apparatus and manufacturing method for sanitary tissue paper roll according to the embodiment of the present invention)
An example of a manufacturing apparatus and a manufacturing method for manufacturing a sanitary tissue paper roll according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. Specifically, the toilet roll 10 as illustrated in FIG. 1 can be manufactured, for example, as follows.

(Manufacturing of raw rolls)
First, the raw rolls 11R and 12R for manufacturing the sheets 11 and 12, which are the constituent elements of the toilet paper 13, are manufactured. Specifically, using a paper machine (not shown), wide (several to twenty-odd times the width of the toilet roll) and long sheets 11L and 12L are made from the papermaking slurry (paper material). While winding, the single-ply original rolls 11R and 12R in which the sheets 11L and 12L are wound are manufactured.

As the paper machine, for example, known paper machines such as a twin wire former method, a circular net former method, a suction prestoformer method, and a crescent former method can be used.

The paper machine may include a creping section for performing crepe processing. In the crepe section, in the raw fabric roll manufacturing process, while the sheet (web) to be machined is dried, if necessary, a crepe doctor imparts very fine wrinkles called crepes to the sheet. Can be done. The crepe can give the sheet softness, bulkiness (bulk feeling), absorbency, aesthetic appearance (crepe shape), and a good touch feeling.

Further, the paper machine may be provided with a calendar unit. In the calendar unit, the dried sheet can be subjected to a calendar process in which the sheets are sandwiched and pressed from above and below by a pair of calendar rolls, if necessary. As a result, the sheets 11L and 12L are compressed, and the paper thickness is adjusted and made uniform, and the surface is smoothed. The calendar processing unit may be provided separately from the paper machine, and the calendar processing may be performed in any manufacturing process after the raw roll manufacturing process. The calendar processing may be performed in a plurality of stages.

Further, using a known winder or ply machine (not shown), the sheets 11L and 12L unwound from the single-ply original rolls 11R and 12R are wound while being superposed on each other to form a laminated sheet 13L. A plurality of ply raw fabric rolls in which the sheets 11L and 12L are wound may be manufactured.

(Manufacturing of toilet rolls)
FIG. 2 is a schematic view showing one example of a sanitary paper roll manufacturing apparatus according to an embodiment of the present invention. FIG. 3 is a schematic view showing another example of the sanitary paper roll manufacturing apparatus according to the embodiment of the present invention.

(An example of an apparatus for manufacturing a sanitary paper roll according to an embodiment of the present invention)
FIG. 2 shows a configuration example of a manufacturing apparatus for manufacturing a toilet roll 10 using a single raw roll. As a single raw fabric roll, a single ply original fabric roll in which one sheet is wound and a plurality of ply (for example, two ply) original fabric rolls in which a plurality of (for example, two) sheets are wound are used. Any of these can be used.

When a single-ply raw fabric roll is used in the manufacturing apparatus of FIG. 2, a single-ply toilet roll (for example, (a) and (e) of FIG. 1) can be manufactured. Further, when a plurality of ply raw fabric rolls are used, a plurality of ply toilet rolls (for example, (b), (c) and (f) of FIG. 1) can be manufactured. According to the configuration of FIG. 2, since there is only one embossing roll E, the embossing formed is a single embossing.

In the example of FIG. 2, as a single raw fabric roll, a single ply raw fabric roll 11R around which one sheet 11L is wound is used.

(A) and (b) of FIG. 2 show an apparatus configuration when embossing is performed and an apparatus configuration when embossing is not performed on the same manufacturing apparatus. The configurations of both devices differ from each other in terms of the positions of the rolls E, B, P and the like included in the embossed portion 21 and the paper passing path of the sheet 11L. In other words, in the manufacturing apparatus shown in FIG. 2, the embossing unit 21 performs (i) embossing or (ii) embossing depending on the selection of the paper path of the sheet 11L and the position of the backup roll B in the roll set 22. It is configured so that no embossing that is not performed can be selectively performed.

(I) Equipment configuration and manufacturing method when embossing is performed The equipment configuration and manufacturing method when embossing is performed will be described with reference to (a) of FIG.

The original roll 11R is rotatably attached to the original roll stand, and is rotationally driven by a sheet feeding device (not shown) to feed the sheet 11L.

Here, the speed at which the sheet 11L is fed from the original roll 11R is referred to as the sheet feeding speed Vu. As the sheet feeding device, any known device capable of feeding the sheet 11L at a predetermined feeding speed Vu and changing the feeding speed Vu steplessly can be used. The sheet feeding device may, for example, adjust the feeding speed Vu of the sheet 11L by controlling the rotation speed by a drive unit capable of rotationally driving the shaft passed through the winding core of the original roll 11R. Alternatively, the sheet feeding device adjusts the feeding speed Vu of the sheet 11L by controlling the rotational driving speed of the rotary drive belt that abuts on the outer periphery of the raw roll 11R and rotationally drives the raw roll 11R. May be good. The rotation speed and the rotation drive speed for adjusting the feeding speed Vu can be controlled, for example, by changing the supply voltage and the supply current to the drive unit.

The sheet 11L unwound from the raw roll 11R is wound around the guide roll 30 and guided, and is conveyed to the embossing portion 21 arranged on the downstream side of the raw roll stand. Further, a perforation forming portion 25 and a winding portion 26 are arranged in order on the downstream side of the embossed portion 21.

(Embossed part)
The embossing unit 21 is simply a unit that embosses the sheet 11L to form embossing over substantially the entire area of the paper surface. The embossing is a process of forming an embossed convex portion on one surface of both sides of a sheet to be embossed and an embossed concave portion formed on the other surface on the back side of the embossed convex portion.

(Roll set)
The embossed portion 21 has an embossed roll E and a plain roll P arranged apart from each other, a first position in contact with the embossed roll E and separated from the plain roll P (see (a) in FIG. 2), and a plain roll P. A roll set 22 is provided with a backup roll B provided so as to be selectively displaceable at a second position (see (b) in FIG. 2) which is in contact with the embossed roll E and separated from the embossed roll E. The backup roll B can be displaced by any known means, such as an air cylinder.

In the example of FIG. 2, the three rolls of the roll set 22 have their rotation axes arranged in a straight line in the vertical direction in the drawing, and the backup roll B is used by being displaced linearly in the vertical direction. However, in the embodiments of the present invention, the configuration is not limited to this. For example, the embossing roll E, the backup roll B, and the plane roll P are arranged in a straight line in the diagonal direction in the drawing, and the backup roll B is displaced in the diagonal direction or in the vertical direction or the horizontal direction in the drawing. Even if it is configured to be selectively displaced to a first position in contact with the embossed roll E and separated from the plane roll P, and a second position in contact with the plane roll P and separated from the embossed roll E. good. Further, the embossing roll E, the backup roll B, and the plain roll P may be arranged non-linearly so that the positions of the rotation axes are arranged in a dogleg shape in the drawing. The displacement direction of the backup roll B is not limited to the vertical direction, the diagonal direction, or the horizontal direction in the drawing, and may be displaced in a curved manner so as to draw an arc. A linear displacement, particularly a linear displacement in the vertical direction, is preferable in terms of enabling simple device configuration and control.

The embossed roll E is a roll having an uneven portion on the outer peripheral surface corresponding to a desired embossed pattern. In this example, an uneven portion corresponding to the embossing pattern of the embossing 11a (embossing 13a) of the sheet 11 (toilet paper 13) shown in FIG. 1A is formed on the outer peripheral surface of the embossing roll E. At least the uneven portion of the emboss roll E is formed of metal, and the emboss roll E may be a male (convex) steel roll. The embossed roll E is rotationally driven by a driving means (not shown).

The plain roll P is a steel roll having a cylindrical outer shape, and preferably has a high roundness (roundness, straightness). The plane roll P is rotationally driven by a driving means (not shown).

The backup roll B is a driven roll used by selectively abutting one of the embossed roll E and the plain roll P, and has a cylindrical outer shape. The surface portion of the backup roll B is formed of a hard rubber-like elastic body such as a hard synthetic rubber that can be elastically deformed.

When embossing is performed with reference to FIG. 2A, the sheet 11L conveyed from the raw roll 11R to the embossing portion 21 is the first pass through between the backup roll B and the embossing roll E. It is inserted through the paper path. The sheet 11L is pressed by the backup roll B against the embossing roll E, receives the driving force of the embossing roll E, and is delivered to the downstream side of the roll set 22. By the pressing between the backup roll B and the embossing roll E, the embossing 11a (13a) is formed on the sheet 11L.

Here, in the configuration example of the manufacturing apparatus shown in FIG. 2A, a preferred embodiment of the first paper passing path through which the sheet 11L passes between the backup roll B and the embossing roll E will be described.

With reference to FIG. 2A, there are roughly two first paper passages through which the sheet 11L passes between the backup roll B and the emboss roll E. The first is a route in which the sheet 11L is wound on the backup roll B as shown in FIG. 2A, passes between the backup roll B and the emboss roll E, and then is wound on the emboss roll E ( The second is a route (not shown, referred to as route N) through which the sheet 11L passes almost directly between the backup roll B and the emboss roll E (referred to as route M).

The sheet 11L can be embossed in both the path M and the path N, and these configurations are included in the embodiment of the present invention.

Of these, there are some major advantages in the configuration in which the sheet 11L passes through the path M.

First, in the path M, the sheet 11L is wound around the backup roll B and bent and conveyed along the outer peripheral surface of the backup roll, so that a frictional force acts between the sheet 11L and the backup roll B. As a result, slippage between the sheet 11L and the backup roll B is satisfactorily suppressed, and stable transportation of the sheet 11L is possible. Embossing can be formed.

Further, the sheet 11L is wound around the backup roll B and bent along the outer peripheral surface of the backup roll to be conveyed, so that the tension Tu applied to the sheet 11L conveyed from the upstream side and the sheet 11L sent out to the downstream side are carried out. It is possible to absorb the difference Δ (| Tu—Td |) of the tension applied to the tension Td. Therefore, an appropriate tension can be stably applied to the sheet 11L on the upstream side and the downstream side, and as a result, breakage of the sheet 11L due to embossing can be stably prevented.

(Embossed roll unit for joining)
An embossed roll unit 23 for joining is arranged on the downstream side of the roll set 22. The joining embossed roll unit 23 has an embossed wheel 23a and a receiving roll 23b that face each other. The receiving roll 23b is rotatable so as to rotate synchronously with the embossing roll E of the roll set 22. An embossing pattern corresponding to the joining embossing 11b (13b) is formed on the outer peripheral surfaces of the embossing wheel 23a and the receiving roll 23b. In this example, at least the uneven portion of the embossing roll unit 23 for joining is formed of metal, but the surface portion of the backup roll is formed of a hard rubber-like elastic body such as elastically deformable hard synthetic rubber. ing.

With reference to FIG. 2A, the sheet 11L that has passed through the roll set 22 has a paper passage En (shown by a solid line in the figure) that does not pass through the joining embossed roll unit 23, or a joining embossed roll unit. It is conveyed toward the guide roll 32 arranged on the downstream side of the roll set 22 through any of the paper passage paths Ey (indicated by a two-dot dashed line in the figure) via 23.

When the sheet 11L passes through the paper passage path En that does not pass through the joining embossing roll unit 23, the sheet 11L is not embossed for joining, and the manufactured toilet paper 13 has the embossing for joining. It will not be.

When the sheet 11L passes through the paper passage path Eye via the joining embossing roll unit 23, the sheet 11L is passed between the embossing wheel 23a and the receiving roll 23b of the joining embossing roll unit 23 and wound around the receiving roll 23b. Be done. At this time, if necessary, the embossing wheel 23a is pressed against the receiving roll 23b that is driven and rotated by a fluid pressure cylinder with a predetermined pressing force, so that the embossing 11b (13b) for joining is pressed against the intervening sheet. Is formed.

The embossed wheel 23a is provided so as to be in contact with and detachable from the receiving roll 23b by a driving means such as an air cylinder. Then, when the sheet 11L passes through the paper passing path Ey, it is possible to separate the embossed wheel 23a and the receiving roll 23b so that the pressing force is not applied. In that case, the joining emboss is not formed on the sheet 11L, and the manufactured toilet paper 13 does not have the joining emboss.

When manufacturing a single-ply toilet roll as in this example, embossing for joining is not essential because ply peeling does not occur. However, when the toilet roll to be manufactured is a plurality of ply products, the embossing for joining is preferably provided because the constituent sheets in the toilet paper are generally likely to be separated.

The sheet 11L that has passed through the embossed portion 21 is wound around the guide roll 32 arranged on the downstream side thereof.

The guide roll 32 guides the sheet 11L sent out from the embossing section 21 to the downstream side. The guide roll 32 may be an expander roll.

(Expander roll)
The expander roll is a roll for removing wrinkles and shrinkage of the seat that occurs when the seat is running. Those used in the papermaking process and the coating process in the field of papermaking technology can be applied to the embodiment of the present invention. The type of expander roll applicable to the present invention is not particularly limited.

The type of expander roll applicable to the embodiment of the present invention includes, for example, a rubber cylinder rotatably mounted on the outer circumference of a non-rotating shaft curved in an arc shape via a spool having a built-in ball bearing. A rubber expander roll, or a steel expander roll that is not covered with a rubber cylinder, an expander roll that has a curved overall shape and has a spiral groove, and an overall shape that is linear and integrated with the rotating shaft. Examples thereof include a worm roll in which a spiral groove is provided symmetrically from the central portion on the surface of the roll that rotates.

When the expander roll 32 is a curved roll, the curved roll rotates around a stationary axis, and the widening effect pushes the sheet 11L outward from the central portion to stretch wrinkles and remove shrinkage. Can be done. This is because when the sheet 11L is flowing while being in contact with a general straight roll (a roll having a linear overall shape and no grooves or the like) at a sufficient holding angle, the sheet 11L has a roll axis thereof. It is based on the principle of going in the direction perpendicular to.

When the expander roll 32 is a roll having a linear shape as a whole, the sheet 11L that abuts on the surface of the roll that rotates integrally with the rotation axis is left and right from the central portion of the expander roll 32 provided on the surface of the expander roll 32. It is extruded so as to be widened along a symmetrically extending spiral groove. As a result, the wrinkles of the sheet 11L can be smoothed and the shrinkage can be removed.

With reference to FIG. 2A, a feeding means F for feeding the sheet 11L to the perforation forming portion 25 is provided between the embossing portion 21 and the perforation forming portion 25 on the downstream side thereof. ing. The expander roll 32 is provided on the upstream side of the feeding means F, preferably near the upstream side of the feeding means F, and removes wrinkles and shrinkage of the traveling seat 11L that will be sent to the feeding means F. This makes it possible to prevent the occurrence of wrinkles that may occur by passing the sheet 11L through the feeding means F without going through the expander roll 32.

The sheet 11L guided by the guide roll or the expander roll 32 is sent to the feeding means F arranged on the downstream side thereof.

(Means of delivery)
In the embodiment of the present invention, the feeding means F means a means configured to be able to feed a long sheet that has been sent by a driving force.

An example of the feeding means F is, for example, a feed roll. The feed roll has a configuration including at least one drive roll (also referred to as a feed roll) having a structure so as not to cause slippage with the sheet 11L. The feed roll is not limited to a roll in which the sheet 11L is sandwiched between two rolls and pressed from above and below (both sides of the sheet 11L) with a constant pressure to regulate the feeding (also called a pinch roll). ), Including a feed roll and a nip roll, the sheet 11L may be pressed against the feed roll by applying pressure to the feed roll, and feeding may be performed by the driving force of the feed roll. In addition, it may take any known form.

The sheet 11L is fed by the feeding means F to the perforation forming portion 25 arranged on the downstream side thereof.

(Perforation forming part)
The perforation forming unit 25 is simply a unit for forming perforations on the sent sheet.

The perforation forming portion 25 is configured to be able to form breaking perforations that cross the sheet 11L in the width direction at regular intervals along the longitudinal direction (MD direction) of the sheet 11L. Any known perforation forming means can be used to form the perforations for breaking.

In this example, the perforation forming means is a rotary blade holder 28h that is driven and rotated, and the blade edge that forms a straight line along the direction parallel to the rotation axis of the rotary blade holder is discontinuous. The rotary blade holder 28h to which the cutter 28c is attached and the fixed blade holder 29h that faces the rotary blade holder 28h and is held in a fixed state, and the cutting edge is along the direction parallel to the rotation axis of the rotary blade holder 28h. It is provided with a fixed blade holder 29h to which a linear cutter 29c that is continuous in a straight line is attached.

The perforation forming means passes a long sheet 11L between the comb-shaped cutter 28c of the rotary blade holder 28h and the linear cutter 29c of the fixed blade holder 29h. As a result, breaking perforations corresponding to the cutting edge of the comb-shaped cutter 28c are formed along the width direction of the sheet 11L so as to straddle both side edges in the width direction of the sheet 11L.

More specifically, the sheet 11L passes across the cutting edge of the linear cutter 29c attached to the fixed blade holder 29h, and has a comb-like shape of the rotary blade holder 28h at a peripheral speed corresponding to the passing speed of the sheet 11L. The cutter 28c rotates. Perforations are formed on the sheet 11L as the comb-shaped cutter 28c passes through the linear cutter 29c. The perforations formed by the comb-shaped cutter 28c and the linear cutter 29c extend over both side edges in the width direction of the sheet 11L, and break to separate the sheet 11L along the width direction. It becomes a perforation for use.

If perforations are not required, the comb teeth of the rotary blade holder 28h can be held by holding the rotary blade holder 28h in a position where the cutting edge of the comb-shaped cutter 28c of the rotary blade holder 28h does not come into contact with the sheet 11L. The sheet 11L may be passed without contacting either the cutting edge of the shape cutter 28c or the cutting edge of the linear cutter 29c.

The sheet 11L that has passed through the perforation forming portion 25 is sent to the winding portion 26 arranged on the downstream side thereof.

(Winding section)
The take-up portion 26 winds the tip end portion of the sheet 11L sent out from the perforation forming portion 25 around a long winding core (paper tube 14L) in the axial direction via an adhesive, and winds the sheet 11L into the paper tube 14L. It is wound up by a predetermined length, and then the rear end portion of the sheet 11L is cut by a cutter roll 33 which is a cutting means to form a wide toilet roll 10L having a large dimension in the CD direction. This wide toilet roll 10L corresponds to the "winding roll" according to the present embodiment.

Here, the speed at which the sheet 11L is wound in the form of a take-up roll is referred to as a sheet take-up speed Vw. For winding the sheet 11L, any known sheet winding device capable of winding the sheet 11L at a predetermined winding speed Vw and changing the winding speed Vw steplessly. Can be used. In this example, the sheet winding device adjusts the winding speed Vw of the sheet 11L by controlling the rotational driving speed of the rotary drive roll that abuts on the outer circumference of the wide toilet roll 10L and rotationally drives the wide toilet roll 10L. There is. However, the sheet winding device is not limited to this, and the sheet winding device can, for example, control the winding speed Vw of the sheet 11L by controlling the rotation speed by a drive unit capable of rotationally driving the shaft passed through the winding core of the wide toilet roll 10L. It may be adjusted. The rotation speed and the rotation drive speed for adjusting the take-up speed Vw can be controlled by changing the supply voltage and the supply current to the drive unit.

The wide toilet roll 10L thus formed, that is, the take-up roll 10L, is then cut to a predetermined width according to the product specifications and the like by a cutting portion (not shown) to become individual toilet rolls 10.

(Ii) Device configuration and manufacturing method without embossing Next, the device configuration and manufacturing method without embossing will be described with reference to FIG. 2 (b). The description of the same configuration and method as the apparatus configuration and manufacturing method in the case of performing the embossing described with reference to FIG. 2A will be omitted.

(Embossed part)
With reference to FIG. 2B, when embossing is not performed, the sheet 11L conveyed from the original roll 11R to the embossing portion 21 is a second sheet that passes between the backup roll B and the plain roll P. It is inserted in the paper path. The sheet 11L is pressed by the backup roll B against the plane roll P, receives the driving force of the plane roll P, and is delivered to the downstream side of the roll set 22. Since the plain roll P has a substantially cylindrical shape and has no unevenness for embossing on the surface, the sheet 11L receives a conveying force due to the pressing between the backup roll B and the plain roll P, but the embossing is not formed. ..

With reference to FIG. 2B, the sheet 11L that has passed through the roll set 22 has a paper passage En (shown by a solid line in the figure) that does not pass through the joining embossed roll unit 23, or a joining embossed roll unit. It is conveyed toward the guide roll or the expander roll 32 arranged on the downstream side of the roll set 22 through any of the paper passage paths Ey (indicated by a two-dot dashed line in the figure) via 23.

As described above, (i) the apparatus configuration and manufacturing method in the case of performing the embossing described with reference to FIG. 2 (a), and more specifically, the embossing portion 21 shown in FIG. 2 (a). According to the setting, the single-ply embossed product shown in FIG. 1 (a) can be manufactured from the single-ply original roll 11R around which the sheet 11L is wound. Further, (ii) the apparatus configuration and manufacturing method in the case where the embossing is not performed described with reference to FIG. 2 (b), and more specifically, the setting of the embossing portion 21 shown in FIG. 2 (b). According to this, the single-ply no-embossed product shown in FIG. 1 (e) can be manufactured from the single-ply original roll 11R around which the sheet 11L is wound.

(Modification example)
As the single raw fabric roll mounted on the manufacturing apparatus of FIG. 2, for example, a 2-ply raw fabric roll around which the sheet 11L and the sheet 12 are wound can be used. In this case, according to the setting of the embossing portion 21 shown in FIG. 2A, the two-ply embossed product shown in FIGS. 1B and 1C can be manufactured. Further, according to the setting of the embossing portion 21 shown in FIG. 2 (b), the 2-ply no-embossed product shown in FIG. 1 (f) can be manufactured.

As a modification (not shown) of the configuration of the manufacturing apparatus shown in FIG. 2, for example, a configuration in which a plurality of raw fabric rolls can be mounted can be considered. For example, the single-ply raw rolls 11R and 12R are rotatably attached to separate raw roll stands, and the sheets 11L and 12L are fed out from the respective rolls, and the sheets 11L and 12L are fed out from the respective rolls to be overlapped with each other on the guide roll 30, and then the embossed portion 21 is used. The configuration to send to is conceivable. Also in this case, according to the setting of the embossing portion 21 shown in FIG. 2A, the two-ply embossed product shown in FIGS. 1B and 1C can be manufactured. Further, according to the setting of the embossing portion 21 shown in FIG. 2 (b), the 2-ply no-embossed product shown in FIG. 1 (f) can be manufactured.

(Another example of the sanitary paper roll manufacturing apparatus according to the embodiment of the present invention)
Next, FIG. 3 shows another example of the sanitary paper roll manufacturing apparatus according to the embodiment of the present invention. Since the basic configuration of the sanitary tissue paper roll manufacturing apparatus shown in FIG. 3 is the same as the basic configuration of the manufacturing apparatus shown in FIG. 2, the description is omitted or simplified, and the differences are explained in detail. do.

The manufacturing apparatus shown in FIG. 3 is configured to be capable of mounting two raw rolls 11R and 12R, and the embossing portion 21 is provided with a roll set 24 having the same configuration as the roll set 22 described with reference to FIG. Further prepare.

Specifically, the roll set 24 has an embossed roll E2 and a plane roll P2 arranged apart from each other, and a first position in contact with the embossed roll E2 and separated from the plane roll P2 (see (a) in FIG. 3). It is composed of a backup roll B2 provided so as to be selectively displaceable at a second position (see (b) in FIG. 3) which is in contact with the plane roll P and separated from the embossed roll E.

In this example, the arrangement order E2, B2, P2 of each roll in the roll set 24 is reversed in the vertical direction in the figure with the arrangement order of each roll E, B, P in the roll set 22. In this arrangement order, the embossed recesses appear on the outside of the ply of the 2-ply toilet paper 13 and the embossed protrusions appear on the inside of the ply in order to obtain a good feel in the manufactured embossed toilet roll 10. Is by design for, and is not intended to limit the invention.

The above description of the roll set 22 with reference to FIG. 2, that is, the description of the configuration, material, arrangement, displacement control, etc. of each included roll, is shown in FIG. 3 unless there is a contradiction. The same can be applied to 24.

(A) and (b) of FIG. 3 show an apparatus configuration when embossing of the same manufacturing apparatus is performed and an apparatus configuration when embossing is not performed. Both apparatus configurations differ from each other in the positions of rolls E, B, P and rolls E2, B2, P2 in the roll sets 22 and 24 included in the embossed portion 21, and the paper passage paths of the sheets 11L and 12L. .. In other words, in the manufacturing apparatus shown in FIG. 3, the embossing unit 21 is (i) embossed or embossed by selecting the paper passing path of the sheets 11L and 12L and the positions of the backup rolls B and B2 in the roll sets 22 and 24. (Ii) It is configured so that no embossing without embossing can be selectively performed. According to the configuration of FIG. 3, since there are two embossing rolls E, either single embossing or double embossing can be formed as the embossing by the paper passing path.

In the manufacturing apparatus of FIG. 3, the step of winding the sheet 11L unwound from the original roll 11R in the apparatus configuration shown in FIGS. 3A and 3 at the embossing section 21 via the roll set 22. 2 describes the manufacturing apparatus of FIG. 2 with reference to FIGS. 2A and 2B, in which the sheet 11L unwound from the original roll 11R is wound up in the embossing section 21 via the roll set 22. Can be done in the same way as. This description is also applied to the step of winding the sheet 12L unwound from the original roll 12R in the embossing section 21 via the roll set 24 in the apparatus configuration shown in FIGS. 3A and 3B. Can be done and can be done in the same way.

According to the setting of the embossing portion 21 shown in FIG. 3A, it is possible to manufacture a 2-ply double embossed toilet roll 10 in which separate embossing is formed on the sheet 11 and the sheet 12. (For example, see (d) in FIG. 1).

According to the setting of the embossing portion 21 shown in FIG. 3 (b), embossing is not formed on the sheet 11 and the sheet 12, and a 2-ply, no-embossed toilet roll 10 can be manufactured (for example,). , (F) in FIG. 1).

(Modification example)
As a modification not shown (a modification of the paper passing path), in the manufacturing apparatus of FIG. 3, a sheet 11L unwound from the original roll 11R and a sheet 12L unwound from the original roll 12R are separately rolled. Instead of via 22, 24, it can also be wound through a single roll set 22 or 24. For example, the sheet 12L unwound from the raw roll 12R is superposed on the sheet 11L unwound from the raw roll 11R and the guide roll 30, then sent to the embossing section 21 and wound up via the roll set 22. And so on. According to this configuration, it is possible to manufacture a 2-ply single embossed toilet roll 10 in which a common emboss is formed on the sheet 11 and the sheet 12 (for example, (b) and (c) of FIGS. 1). reference).

Further, in the manufacturing apparatus of FIG. 3, a single raw fabric roll can be used instead of using two raw fabric rolls.

By passing a sheet through the roll set 22 using a single single-ply raw fabric roll, a single-ply embossed product and a no-embossed toilet roll 10 can be obtained as in the case of the manufacturing apparatus of FIG. It can also be manufactured (see, for example, (a) and (e) in FIG. 1).

Similarly, by passing a sheet through the roll set 22 using a single 2-ply raw fabric roll, a 2-ply single embossed product and a no-embossed product can be obtained as in the case of the manufacturing apparatus of FIG. The toilet roll 10 can also be manufactured (see, for example, (b), (c) and (f) of FIG. 1).

As described above, in the manufacturing apparatus of FIG. 3, the number of raw rolls used, the number of plies of raw rolls, the paper passing path, the roll set used (both or one of the roll sets 22 and 24), and the like are shown in FIG. Various toilet rolls can be manufactured, including all of the exemplified toilet rolls 10.

The above configuration is for illustrative purposes only and does not limit the invention. The disclosed configurations and features can be combined as appropriate as long as there is no contradiction.

In the manufacturing apparatus of FIGS. 2 and 3, if necessary, three or more ply raw fabric rolls can be used, in which case the total number of sheets contained in the raw fabric rolls used is totaled. It will be understood that a ply number of toilet rolls can be obtained (not shown).

(Action effect)
In the sanitary tissue paper roll manufacturing apparatus according to the first embodiment described above, the embossed roll E and the plain roll P arranged apart from each other in the embossed processing portion 21 and the plain roll P in contact with the embossed roll E are used. A roll set 22 is provided with a backup roll B provided so as to be selectively displaceable at a first position separated from the plane roll P and a second position separated from the embossed roll E in contact with the plane roll P. In this configuration, when embossing is formed on the sheet, the backup roll B is displaced to the first position, the sheet is passed through the first paper path passing between the backup roll B and the emboss roll E, and the sheet is passed through the sheet. When embossing is not formed, the backup roll B is displaced to the second position and the sheet is passed through the second paper path passing between the backup roll B and the plain roll.

According to the present embodiment, by selectively shifting the position of the backup roll with one manufacturing apparatus, it is possible to easily separate the embossed product and the no-embossed product of the sanitary thin leaf paper roll. Therefore, there is no need for a space for providing a plurality of manufacturing devices or a large-scale replacement work such as removing one of the embossed roll and the plain roll from the device and replacing it with the other in one manufacturing device. As described above, according to the present embodiment, in the production of sanitary tissue paper rolls, embossing can be selectively formed in a compact space and with a simple operation.

(Second embodiment)
Next, a second embodiment of the present invention will be described. Unless otherwise stated, the configurations applicable to the first embodiment are applicable to the present embodiment.

A second embodiment of the present invention comprises a paper feed rate Ve of an embossing roll and a backup roll for a sheet passing through a first paper passing path, and a plain roll and a backup roll for a sheet passing through a second paper passing path. The paper feed rate Vp is controlled so as to satisfy the equation Ve <Vp.

Since the control method in the manufacturing apparatus shown in FIG. 2 can be similarly applied to the control of the manufacturing apparatus shown in FIG. 3, the manufacturing apparatus shown in FIG. 2 is referred to here for ease of explanation. This embodiment will be described.

With reference to FIG. 2A, the sheet 11L unwound from the original roll 11R passes through the first paper path passing between the backup roll B and the emboss roll E, and the backup roll B is used. While being pressed by the emboss roll E, it receives the driving force of the emboss roll E and is conveyed to the downstream side.

Similarly, referring to (b) of FIG. 2, when the sheet 11L unwound from the original roll 11R passes through the second paper passing path passing between the backup roll B and the plain roll P, the sheet 11L is used. While being pressed by the plane roll P by the backup roll B, it receives the driving force of the plane roll B and is conveyed to the downstream side.

The plain roll P generally has a cylindrical outer shape having a high degree of roundness (roundness, straightness).

On the other hand, the outer peripheral surface of the embossed roll E is provided with a male (convex) portion for forming an embossed recess in the sheet 11L in a predetermined pattern, and has irregularities. Therefore, although it depends on various conditions such as the size of the pressing force and the roll diameter, when the sheet 11L is sandwiched and conveyed between the backup roll B and the embossing roll E, that is, the sheet 11L is the first paper passing sheet. When passing through the path, embossing is mainly formed on the sheet 11L corresponding to the tip portion of the pattern of the male (convex) portion of the embossing roll E, and embossing is not formed downstream of the roll set 22. In comparison, it is easy to extend in the transport direction.

Here, under other conditions such as the feeding speed Vu and the take-up speed Vw of the sheet 11L, the paper feed rate Ve by the embossing roll E and the backup roll B with respect to the sheet 11L passing through the first paper passing path is set to the first. Consider a case where the speed is controlled to be the same as the paper feed rate Vp by the plain roll P and the backup roll B for the sheet 11L passing through the paper passing path of 2.

In this case, when the sheet 11L is passed through the first paper path, the sheet 11L extends in the transport direction as compared with the case where the sheet 11L is passed through the second paper path, whereby the embossed roll E Downstream of the plain roll P, slackening of the sheet is more likely to occur as compared with the downstream of the plain roll P.

As described above, the manufacturing apparatus according to the embodiment of the present invention is configured so that the paper passing route can be selectively changed, but due to the difference in the paper passing route, the sheet 11L that has passed through the roll set 22 Looseness can occur. Therefore, in the present embodiment, in order to suppress the occurrence of such slack, the paper feed rate Ve by the embossing roll E and the backup roll B with respect to the sheet 11L passing through the first paper passing path is set to the second passing. The control is performed so that the paper feed rate Vp by the plain roll P and the backup roll B with respect to the sheet 11L passing through the paper path is lower (that is, so as to satisfy the equation Ve <Vp).

(Action effect)
In the manufacturing apparatus according to the embodiment of the present invention, under the same paper feed conditions, when the sheet 11L passes through the first paper passing path passing between the backup roll B and the emboss roll E, the sheet 11L is a backup roll. Loosening is more likely to occur in the sheet 11L that has passed through the roll set 22 than when passing through the second paper passing path that passes between B and the plain roll P. On the other hand, in the present embodiment, the paper feed rate Ve by the emboss roll E and the backup roll B for the sheet 11L passing through the first paper passing path is the plain roll P for the sheet 11L passing through the second paper passing path. And the backup roll B are controlled so as to be lower than the paper feed rate Vp (that is, satisfy the equation Ve <Vp). As a result, it is possible to suppress the slack that may occur in the sheet 11L that passes through the first paper passing path.

The production method of the present invention can be applied not only to the production of toilet rolls but also to the production of any known sanitary tissue paper rolls such as kitchen rolls (rolled kitchen paper).

The present invention should be construed only from the matters described in the claims, and even in the above-described embodiment, it is possible other than the matters described by any changes or modifications included in the concept of the present invention. be. That is, all the matters in the above-described embodiment are not intended to limit the present invention, and are arbitrarily modified according to the use, purpose, etc., including all configurations not directly related to the present invention. What you get.

B, B2 Backup roll E, E2 Embossed roll F Feeding means P, P2 Plain roll Ve Embossed roll drive speed Ve
Vp Plain roll drive speed Vp
Vu Sheet feeding speed Vw Sheet winding speed 10 Toilet roll 10L Wide toilet roll 11,12 Sheet 11a, 12a, 13a Embossed 11b, 12b, 13b Embossed for joining 11L, 12L Long sheet 11R, 12R Original roll 13 Toilet paper 14 Paper tube (core)
22, 24 Roll set 23 Embossed roll unit for joining 23a Embossed wheel 23b Receiving roll 25 Perforation forming part 25
26 Winding part 28c Comb-shaped cutter 28h Rotary blade holder 29c Linear cutter 29h Fixed blade holder 30, 31 Guide roll 32 Guide roll or expander roll 33 Cutter roll

Claims (6)

A sheet feeding function for unwinding the sheet from the original roll from which the sheet is wound, an embossed portion configured to be able to form embossing on the unwound sheet, and a sheet winding function for winding the sheet. A sanitary tissue paper roll manufacturing device equipped in this order.
The embossed portion includes an embossed roll and a plain roll arranged apart from each other, a first position in contact with the embossed roll and separated from the plane roll, and a second position in contact with the plane roll and separated from the embossed roll. Equipped with a roll set consisting of a backup roll that can be selectively displaced at the position.
When embossing is formed on the sheet, the backup roll is displaced to the first position, the sheet is passed through a first paper path passing between the backup roll and the embossing roll, and the sheet is passed through the sheet. When the embossing is not formed, the sanitary tissue paper is characterized in that the backup roll is displaced to the second position and the sheet is passed through a second paper passing path passing between the backup roll and the plain roll. Roll manufacturing equipment. Paper feed rate Ve by the embossing roll and the backup roll for the sheet passing through the first paper passing path, and paper feeding by the plain roll and the backup roll for the sheet passing through the second paper passing path. The device for producing a sanitary tissue paper roll according to claim 1, wherein the speed Vp is controlled so as to satisfy the formula Ve <Vp. The sanitary tissue paper roll manufacturing apparatus according to claim 1 or 2, wherein the sheet feeding function is configured so that the sheet can be fed from each of the plurality of raw fabric rolls. It is configured that the sheet provided with the plurality of roll sets and unwound from each of the plurality of raw fabric rolls can be passed through the same or different roll sets of the plurality of roll sets. The hygienic tissue paper roll manufacturing apparatus according to claim 3, which is characterized. A joining embossed roll unit is further provided downstream of the roll set, and the sheet sent out from the roll set has a paper passage path through the joining embossed roll unit and the joining embossed roll unit. The device for producing a sanitary tissue paper roll according to any one of claims 1 to 4, wherein the device has a paper path that does not pass through. It includes a sheet feeding step of unwinding the sheet from the raw roll from which the sheet is wound, and a sheet winding step of winding the sheet to form a winding roll.
A roll set arranged between the original roll and the take-up roll so that embossing can be selectively formed on the sheet, and the embossing rolls and plain rolls arranged so as to be separated from each other. Using a roll set consisting of a backup roll provided so as to be selectively displaceable at a first position in contact with the embossed roll and a second position in contact with the plain roll.
When embossing is formed on the sheet, the backup roll is displaced to the first position and the sheet is passed through a first paper path passing between the backup roll and the embossing roll.
When the sheet is not embossed, the backup roll is displaced to the second position and the sheet is passed through a second paper path passing between the backup roll and the plain roll. Sanitary thin paper roll manufacturing method.

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