JP5277302B2 - Manufacturing method for pants-type wearing articles - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method for precisely and stably arranging tape-like sheet materials at predetermined intervals. <P>SOLUTION: The method for manufacturing an underpants-type wearing article is as follows. A plurality of tape-like sheet materials 33T are formed by slitting a first sheet material 1S in the width direction. They are conveyed in alternately different directions from each other to be divided for the belly side and the back side while keeping their positions in the width direction when they were slit. Each of the tape-like sheet materials 33T for the belly side and the back side are layered and fixed on a second sheet material 2S while keeping their positions in the width direction when they were slit, thereby obtaining a continuous members 11S for an outer body arranged on the belly- and back-side parts 21 and 23. Then, the continuous members 11S for the outer body arranged on the belly- and back-side parts 21 and 23 are adjusted their positions at the predetermined intervals D. An absorptive body 40 is layered across the second sheet materials 2S of the respective continuous members 11S for the outer body, while these second sheet materials 2S are faced inward so as to mutually overlap the respective continuous members 11S for the outer body and bond them widthwise together at the predetermined intervals. The continuous members 11S for the outer body are cut off widthwise at the joint. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  The present invention relates to a method for manufacturing a pants-type wearing article.

  As a conventional pants-type diaper, the outer body formed to be disposed on the abdomen and the back side of the wearer, and the crotch disposed on the crotch portion of the wearer between the abdomen and the back side of the exterior body And an absorbent main body disposed on the crotch part are known (see, for example, Patent Document 1 and Patent Document 2).

  The exterior body has a two-layer structure in which an inner layer material and an outer layer material are laminated over almost the entire surface, and in order to configure the exterior body, a sheet in which the inner layer material and the outer layer material are bonded together with an elastic member interposed therebetween. Is used. Dividing the width of this sheet into two parts, placing the absorbent main body so as to pass between each sheet in a state where the divided sheets are arranged in parallel, bend the outer side part of each outer layer material constituting the sheet, and bend it Fix both ends of the absorbent body at the part. Subsequently, the sheets are folded near the center of the absorbent main body and the inner layer material is placed inside, and the stacked sheets are joined so as to sandwich the absorbent main body at predetermined intervals in the width direction. Then, the center part of a junction part is cut | disconnected and cut | disconnected in the width direction of a sheet | seat. As a result, a pants-type diaper including an exterior body formed by joining sheets and an absorbent main body fixed to the exterior body is completed (see, for example, Patent Document 1).

  Further, the front body and the back body are continuously covered with an integral exterior sheet, and a plurality of strip-like sheet base materials extending in the width direction are arranged on the outer surface while shifting the position in the longitudinal direction. A configuration is disclosed in which a waist elastic elastic member that also serves as a gather elastic elastic member is sandwiched between the waist-side end portions of the overlapping portion between the outer sheet and the exterior sheet, and fixed with a hot melt adhesive or the like (see, for example, Patent Document 3). . In this configuration, since the end portion on the crotch side of the strip-shaped sheet base material in the CD direction (width direction orthogonal to the line flow direction) is arranged so as to cover another strip-shaped sheet base material below, At least a two-layer structure composed of an exterior sheet and a strip-shaped sheet base material (a three-layer structure in the overlapping portion of the strip-shaped sheet base materials). In this production method, an elongated elastic elastic member is continuously sandwiched between the outer sheet and the belt-like sheet base material, and is fixed by a hot melt adhesive at the end on the waist side. For this reason, it is necessary to shift the belt-like sheet base materials so that the belt-like sheet base materials partially overlap, and the positional accuracy of the belt-like sheet base material with respect to the elongated elastic stretchable member becomes important.

Japanese Patent Laying-Open No. 2005-279077 Special table 2008-508082 Patent No. 4659109

A user's feeling of use similar to that of underwear is required for a pants-type diaper, and in a conventional pants-type diaper, the exterior body has a two-layer structure in which an inner layer material and an outer layer material are laminated over almost the entire surface. Therefore, further improvement in flexibility and breathability is expected. In particular, when an embossed sheet such as spunbond is used, the possibility has increased. Moreover, since the two-layer structure or the three-layer structure is also provided in the configuration in which the belt-like sheet base material serving as the waist frill member is arranged in the vertical direction, further improvement in air permeability is desired.
An object of the present invention is to solve the problem of stuffiness during wearing by softening the waist area of the exterior body of the pant-type diaper and improving the air permeability. Furthermore, when fixing the tape-shaped sheet material (strip-shaped sheet base material) which cut | disconnected the sheet | seat like a nonwoven fabric narrowly, it makes it a subject to arrange | position a tape-shaped sheet material stably with a predetermined space | interval.

  The present invention is a method for manufacturing a pants-type wearing article, wherein a plurality of tape-like sheet materials are formed by slitting a plurality of first sheet materials, which are constituent materials of an exterior body, in the width direction; The tape-shaped sheet material is conveyed in different directions alternately while maintaining the position in the width direction at the time of the slit, and separated into abdominal side and back side, and the abdominal side and back side tapes Each of the sheet-like sheet materials is laminated and fixed on separate second sheet materials on the ventral side and the back side while maintaining the position in the width direction at the time of the slit, and the exterior body continuous member and the back arranged on the ventral side part A step of obtaining an exterior body continuous member disposed on the side, a step of adjusting the position of the exterior body continuous member disposed on the abdominal side and the exterior body continuous member disposed on the back side at a predetermined interval; The exterior body continuous member disposed on the abdominal side and the exterior body continuous portion disposed on the back side A step of fixing the absorbent main body so as to pass between, an exterior body continuous member disposed on the abdominal side with the second sheet members facing each other, and an exterior body continuous disposed on the back side A method for manufacturing a pants-type wearing article, comprising: a step of overlapping members and joining the exterior body continuous members to each other at a predetermined interval in the width direction; and a step of cutting the exterior body continuous member in the width direction at the joint portion. I will provide a.

The manufacturing method of the pants-type wearing article of the present invention can soften the waist area by the action of the part of the one layer region (flexibility), and can greatly improve the breathability of the region, and drastically reduce the stuffiness. A pants-type wearing article that can be made can be easily manufactured.
Further, the tape-like sheet material for the ventral side and the back side is laminated and fixed to the second sheet material while maintaining the position in the width direction at the time of slitting, so the tape-like sheet material with respect to the second sheet material Can be stably and highly accurately arranged.

It is the perspective view which showed an example of the preferable underpants type wearing article manufactured with the manufacturing method of the underpants type wearing article of this invention. It is the disassembled perspective view which showed an example of the underpants type wearing article shown in FIG. It is drawing which showed an example of the manufacturing method of the underpants type wearing article shown in FIG. 1, (1) is the perspective view which showed the whole manufacturing process, (2) shows the state which laminates | stacks an absorptive main body. FIG. It is the principal part perspective view which showed an example of the manufacturing method of the underpants type wearing article shown in FIG. It is the principal part top view which showed an example of the manufacturing method of the underpants type wearing article shown in FIG. It is the manufacturing process schematic which showed the 1st embodiment of preferable one Embodiment (1st Embodiment) which concerns on the manufacturing method of the underpants type wearing article of this invention. It is the principal part perspective view which showed the manufacturing method of the underpants type wearing article of a 1st embodiment. It is the principal part top view which showed the manufacturing method of the underpants type wearing article of a 1st embodiment, (1) is the principal part plane seen from the upper direction of the 2nd sheet | seat material distribute | arranged to a 1st sheet | seat material and a back side part. It is a figure and (2) is the principal part top view which looked at the 2nd sheet material etc. which are distribute | arranged to the belly side part below a 1st sheet | seat material and a lower 1st separating roll from the upper direction. It is the top view which showed the slit state of the tape-shaped sheet material of a 1st embodiment. It is the side view which showed the separation state of the tape-shaped sheet material in the separation roll part of 1st embodiment. It is the principal part perspective view which showed the 2nd embodiment which concerns on the manufacturing method of the underpants type wearing article of this invention. It is the principal part perspective view which showed the 3rd embodiment which concerns on the manufacturing method of the underpants type wearing article of this invention. It is the principal part perspective view which showed 2nd Embodiment which concerns on the manufacturing method of the underpants type wearing article of this invention. It is the principal part perspective view which showed the 1st embodiment of 3rd Embodiment which concerns on the manufacturing method of the underpants type wearing article of this invention. It is the top view which showed the slit state of the tape-shaped sheet material of the 1st embodiment of 3rd Embodiment. It is the top view which showed the slit state of the tape-shaped sheet material of the 2nd embodiment of 3rd Embodiment. It is the principal part side view which showed an example of the positional relationship of the tape-shaped sheet material of a belly side part and a back side part, and a 2nd sheet material on both sides of the side seal part of the underpants type wearing article of this invention. It is the principal part side view which showed an example of the positional relationship of the tape-shaped sheet material of a belly side part and a back side part, and a 2nd sheet material on both sides of the side seal part of the underpants type wearing article of this invention. It is the principal part side view which showed an example of the positional relationship of the tape-shaped sheet material of a belly side part and a back side part, and a 2nd sheet material on both sides of the side seal part of the underpants type wearing article of this invention. It is the principal part side view which showed an example of the positional relationship of the tape-shaped sheet material of a belly side part and a back side part, and a 2nd sheet material on both sides of the side seal part of the underpants type wearing article of this invention. It is drawing which showed 4th Embodiment which concerns on the manufacturing method of the underpants type wearing article of this invention, and showed the case where the elastic body continuous member 3S was supplied in multiple numbers in FIG. 8 (1) of 1st Embodiment. FIG.

First, a preferable example of a pant-type wearing article manufactured by the method for manufacturing a pant-type wearing article according to the present invention will be described below with reference to FIGS. 1 and 2.
In the pant-type wearing article 10 of the present specification, the height direction of the pant-type wearing article is defined as the Y direction, and the width direction of the pant-type wearing article is defined as the X direction, which is also referred to as “waist circumference direction”.

As shown in FIG. 1 and FIG. 2, a preferred example of the pant-type wearing article 10 is, for example, a pant-type diaper, and a belly side portion 21 disposed on the wearer's belly side and a crotch portion disposed on the crotch portion. 13 and a back side portion 23 arranged on the back side. Hereinafter, the pants-type diaper 10 will be described in detail.
The pants-type diaper 10 includes an exterior body 11 that forms an abdominal side portion 21 and a back side portion 23, and an absorbent main body 40 that forms a crotch portion 13.

In the exterior body 11, one side edge portion 21 </ b> A of the abdominal side portion 21 and one side edge portion 23 </ b> A of the back side portion 23 are joined, and the other side edge portion 21 </ b> B and back side portion 23 of the abdominal side portion 21 are joined. The one side edge portion 23B is joined to form an annular shape. The side seal part 25 is comprised by each of the junction part of the side edge parts 21A and 23A and the junction part of the side edge parts 21B and 23B.
Moreover, the crotch part 13 is comprised by the absorptive main body 40 which bridge | crosses the stomach side part 21 and the back side part 23, and is distribute | arranged to a wearer's crotch part. A pant-type body is formed by the absorbent main body 40 that spans the outer body 11 and the crotch part 13 that are formed into an annular shape.
The absorbent main body 40 forms a crotch portion, and extends to the vicinity of the waist opening 12 below the exterior body 11 at the abdominal side portion 21 and the back side portion 23, and is fixed to the exterior body 11. Thereby, the exterior body 11 has the center area | region to which the absorptive main body 40 was fixed, and the both-sides area | region which is not fixed in the waist area. The “waist circumference region” refers to a region from the upper end edge of the waist opening 12 to a position where the vicinity of the outer root of the thigh is arranged in the height direction (Y direction) which is the lower direction.

  The exterior body 11 is configured by laminating an inner layer material 31 and an outer layer material 33, and a one-layer region where one layer of the inner layer material 31 exists is spaced in the height direction (Y direction) of the exterior body 11. Have more than one. In the drawing, the inner layer material 31 is present in one layer region, and the outer layer material 33 is stacked on the inner layer material 31 at intervals in the height direction of the exterior body 11.

The laminated region where the inner layer material 31 and the outer layer material 33 are laminated has elasticity in the width direction (X direction) of the pant-type diaper 10. The laminated region may include an elastic body 35 between the inner layer material 31 and the outer layer material 33. In this case, the elastic body 35 is sandwiched between the inner layer material 31 and the outer layer material 33 in an expanded state, and thereby has elasticity. Alternatively, as will be described in detail later, both or one of the inner layer material 31 and the outer layer material 33 may be made of a stretchable material.
Further, in the central region of the outer package 11 to which the absorbent main body 40 is fixed, the elastic body 35 is cut at a plurality of locations, and the laminated region of the inner layer material 31 and the outer layer material 33 has substantial stretchability. Preferably not.

As a sheet as a material of the inner layer material 31 and the outer layer material 33, for example, non-woven fabric, woven fabric, knitted fabric, resin by various production methods such as air-through nonwoven fabric, heat roll nonwoven fabric, spunlace nonwoven fabric, spunbond nonwoven fabric, and melt blown nonwoven fabric, respectively. A film etc. are mentioned, The sheet | seat material etc. which carry out lamination | stacking integration of these can also be used.
In particular, the inner layer material 31 is preferably formed from a nonwoven fabric from the viewpoint of improving air permeability and texture, and is formed from a water-repellent nonwoven fabric from the viewpoint of preventing excrement leakage. Is preferred.

  As the material of the elastic body 35, normal elastic materials used for absorbent articles such as diapers and sanitary napkins can be used. Examples of the material include synthetic rubbers such as styrene-butadiene, butadiene, isoprene and neoprene, Natural rubber, EVA, stretchable polyolefin, polyurethane, etc. can be mentioned, and the form is a thread-like or string-like shape (flat rubber etc.) with a cross section of a rectangle, square, circle, polygon, etc., or a multifilament type A thread-like thing etc. can be used.

Next, the absorbent main body 40 will be described. As shown in FIG. 2, the absorbent main body 40 includes, as an example, a top sheet 41, a back sheet 42, and an absorbent core 43 having liquid retaining properties interposed therebetween. The absorbent core 43 is covered with the covering sheet 44 by bending the covering sheet 44 in the direction of the arrow at the position of the dotted line shown in the drawing. Further, a pair of side sheets 46 and 46 forming an inner three-dimensional gather 45 are disposed on the skin contact surface side. The back sheet 42 and the crotch sheet 47 are arranged in this order on the non-skin contact surface side.
This absorptive main body 40 can use the material normally used for this kind of diaper, and is not specifically limited.

  The top sheet 41 is preferably formed of a hydrophilic nonwoven fabric. The hydrophilic nonwoven fabric is an air-through nonwoven fabric, a point-bonded nonwoven fabric, a spunbonded nonwoven fabric, a spunlace nonwoven fabric, and a nonwoven fabric called three-dimensionally shaped nonwoven fabric, the fibers of which are polypropylene single fibers or polypropylene and polyethylene composite fibers, A fiber that has been subjected to a hydrophilic treatment with a composite fiber of polyethylene terephthalate and polyethylene can be preferably used. Moreover, the sheet | seat which opened the resin film as the surface sheet 41 can also be used.

  The back sheet 42 is not particularly limited as long as it has waterproofness and moisture permeability. For example, a film is formed by melt-kneading a hydrophobic thermoplastic resin, a fine inorganic filler made of calcium carbonate or the like or an incompatible organic polymer, and the film is obtained by uniaxial or biaxial stretching. A porous film is mentioned. Examples of the thermoplastic resin include polyolefin. Examples of the polyolefin include high to low density polyethylene, linear low density polyethylene, polypropylene, polybutene and the like, and these can be used alone or in combination.

As the absorbent core 43, for example, a fiber assembly or a combination of this and an absorbent polymer can be used. As the fibers constituting the fiber assembly, hydrophilic natural fibers such as pulp fibers, synthetic fibers (preferably subjected to hydrophilic treatment), and the like can be used. The basis weight is not particularly ^limited, preferably ^{150g / m 2 ~500g / m 2} . The covering sheet 44 includes thin paper (thin paper) such as hydrophilic tissue paper, non-woven fabric made of hydrophilic fibers such as cotton and rayon, and non-woven fabric formed by subjecting synthetic resin fibers to hydrophilic treatment (spunbond- Melt blown-spunbond (SMS), spunbond-meltblown-meltblown-spunbond (SMMS), spunbond-spunbond-meltblown-spunbond (SSMS), etc.) can be used.

  It is preferable to use a water-repellent nonwoven fabric for the side sheet 46, and specifically, a spunbond nonwoven fabric, a spunbond-meltblown (SM) nonwoven fabric, an SMS nonwoven fabric, or the like is used. Various nonwoven fabrics can be used for the crotch sheet 47 in order to give a cloth-like appearance.

  Returning to FIG. 1, in this pant-type diaper 10, the outer layer material 33 does not exist, and the inner layer material 31 has one layer region having a single layer region at intervals in the height direction of the exterior body 11. While maintaining the stretchability similar to that of the pants-type diaper and maintaining the wearability to the body and the mobility of the body, the breathability can be remarkably enhanced in the portion of the one layer region. Therefore, it is possible to greatly reduce stuffiness. In addition, since the amount of the outer layer material 33 used can be reduced, a so-called environment-friendly product can be obtained and the product cost can be reduced. Moreover, the softness of the exterior body 11 improves by having a 1 layer area | region, and the operation | movement at the time of wear becomes smooth, and a comfortable feeling becomes good.

  The inventor has invented the following manufacturing method as a manufacturing method of the pants-type diaper 10. The manufacturing method will be described with reference to FIGS.

  As shown in FIGS. 3 to 5, for example, the first sheet material 1S is supplied from the upper side, the second sheet material 2S is supplied from the lower side, and further, the first sheet material 1S and the second sheet material 2S are supplied. The elastic body continuous member 3S to be the elastic body 35 is supplied between the two. The first sheet material 1 </ b> S constitutes the outer layer material 33, and the second sheet material 2 </ b> S constitutes the inner layer material 31. The first sheet material 1S (outer layer material 33), the second sheet material 2S (inner layer material 31), and the elastic body continuous member 3S (elastic body 35) are made of the same material as the above-described pants-type diaper 10.

  First, the first sheet material 1S is divided into a plurality of pieces in the width direction by the outer layer material slit cutter 211 to form a narrow tape-like sheet material 33T. Next, the tape-like sheet materials 33T and 33T are separated by a predetermined distance d1 by a separating means (not shown). The tape-like sheet material 33T (the divided first sheet material 1S) is formed in the width of each outer layer material 33 (33A, 33B) of the pant-type diaper 10 described above, and the interval when the tape-shaped sheet material 33T is separated is also described above. It is produced at the interval of the outer layer material 33 of the pants-type diaper 10.

  Although not shown in the drawing, the separating means is provided with a guide roll for each tape-like sheet material, spreads at a predetermined interval depending on the installation angle and position, and joined with the second sheet material 2S, or each tape-like sheet material. On the other hand, a sheet flow adjusting guide (meandering corrector) is provided and means for joining the second sheet material 2S is provided.

  In addition, a plurality of elastic body continuous members 3S are prepared in parallel, and in an expanded state, and with an adhesive (not shown) supplied by the adhesive coating device 215, Supplied together with the second sheet material 2S. Each elastic body continuous member 3S is supplied at a predetermined interval d2. At this time, it is preferable that the tape-like sheet material 33T is supplied so that the center in the width direction of the elastic body continuous member 3S is positioned at the center in the width direction. For example, a hot melt gun is used for the adhesive coating device 215, and a hot melt adhesive is used for the adhesive in this case.

In this way, the elastic continuous member 3S having a predetermined interval d2 is supplied between the nip rolls 217 and 218 while being extended on the second sheet material 2S. At the same time, each tape-like sheet material 33T is supplied on each elastic body continuous member 3S such that the elastic body continuous member 3S is positioned at the center in the width direction of the tape-like sheet material 33T.
Then, the second sheet material 2S, the elastic continuous member 3S, and the tape-shaped sheet material 33T are passed between the nip rolls 217 and 218, and the second is obtained by the hot melt adhesive attached to the elastic continuous member 3S by the pressure between the rolls. The sheet material 2S and the tape-shaped sheet material 33T are bonded via the elastic body continuous member 3S to obtain the exterior body continuous member 11S to be the exterior body 11. The adhesive may be supplied to either one or both of the tape-like sheet material 33T and the second sheet material 2S by the adhesive coating device 215 and bonded to the elastic body continuous member 3S.

Next, an elastic body cutting step is performed in which the elastic function of the elastic continuous member 3S in the portion to which the absorbent main body 40 of the second sheet material 2S is attached is not expressed. The elastic body cutting step uses, for example, a cut roll 219 formed with a non-functionalized region forming portion (not shown) that prevents the contraction force of the elastic body continuous member 3S from being expressed, and the exterior body continuous member 11S is nonfunctional. 11N can be formed. The non-functionalized region forming portion is configured by a large number of convex portions or cutter blades that divide the elastic body continuous member 3S, or a large number of emboss pins that harden the elastic body continuous member 3S by heat sealing.
The roll 220 facing the cut roll 219 is the receiving roll, and its peripheral surface is a smooth surface.

  Next, the exterior body continuous member 11S is cut at the center in the width direction so as to form the abdomen side portion 21 and the back side portion 23 using the exterior body slit cutter 221 and separated at a predetermined interval. The dimensions of the pants-type diaper 10 including the predetermined interval are appropriately selected according to the size and application.

  Next, the absorbent body 40 obtained by cutting the absorbent main body continuous body 40S supplied from the absorbent main body forming portion 4 is placed at a predetermined position between the ventral side portion 21 and the back side portion 23 of the exterior body continuous member 11S. To place. At this time, the absorptive main body 40 is arranged so that the longitudinal direction thereof is, for example, a perpendicular direction with respect to the ventral side portion 21 and the back side portion 23. The absorptive main body 40 is fixed to the exterior body continuous member 11S while maintaining the extended state of the exterior body continuous member 11S. For example, the absorbent main body 40 is fixed while maintaining the exterior body continuous member 11 </ b> S so as not to be contracted by the contraction force of the elastic body continuous member 3 </ b> S. In general, the absorbent main body 40 is also provided with an elastic member that contracts in the longitudinal direction thereof. Even in such a case, the outer body continues to be maintained while the absorbent main body 40 is not contracted. It fixes with respect to the member 11S. At that time, an adhesive is applied in advance to the absorbent main body 40 or the exterior body continuous member 11S.

  Subsequently, the outer end in the width direction of the exterior body continuous member 11S is folded back so as to cover both ends in the longitudinal direction of the absorbent main body 40, and the absorbent main body 40 is fixed at the folded portion. At that time, an adhesive is applied in advance to predetermined positions on the inner surface side of the folded portion, the absorbent main body 40, and the like.

  Next, the longitudinal direction of the absorbent main body 40 is folded in half, and the abdomen side portion 21 of the exterior body continuous member 11S and the back side portion 23 of the exterior body continuous member 11S are opposed to the second sheet material 2S inside. And overlap. Then, the side seal process which joins the abdominal part 21 and the back side part 23 in the width direction at predetermined intervals is performed. The predetermined interval in the side seal process determines the length of the pants-type diaper 10 in the width direction. In this way, a continuous pants-type diaper 10S is obtained.

  Subsequently, the pants-type diaper continuum 10S is cut in the width direction at the joint obtained by performing the side seal. As a result, the pant-type diaper 10 is completed, and the configuration described in the above-described example of the pant-type diaper can be obtained.

  In the manufacturing method described above, a manufacturing method in which the bonding position of the tape-like sheet material 33T is bonded to the second sheet material 2S with higher accuracy is expected. As a manufacturing method thereof, there is a manufacturing method of a pants-type wearing article of the present invention as follows. Hereinafter, it demonstrates as a manufacturing method of a pants-type diaper.

A first embodiment of a preferred embodiment (first embodiment) of the method for producing a pant-type diaper of the present invention will be described below with reference to FIGS. This 1st embodiment is one method of manufacturing the above-mentioned underpants type diaper 10. In addition, about the point which is not demonstrated especially about the other embodiment mentioned later, the description explained in full detail regarding the 1st embodiment is applied suitably.
8 is a plan view of the main part in FIG. 7, and FIG. 8 (1) is a view as seen from above the first sheet material 1S and the second sheet material 2S arranged on the back side part 23. FIG. FIG. 8B is a partial plan view of the first sheet material 1S and the second sheet material 2S and the like disposed on the belly side portion 21 below the lower first separation roll 253, as viewed from above. It is a top view. FIG. 8 clarifies the positional relationship between the second sheet material 2S and the tape-shaped sheet material 33T and the positional relationship between the tape-shaped sheet material 33T and the elastic continuous member 3S. The tape shape is a narrow and long belt-like sheet state, and the slit is to divide a sheet material into a plurality of pieces in the width direction and cut into a plurality of tape shapes. In this invention, it cut | disconnects along the supply direction (arrow A1 direction mentioned later) of a sheet material, and is divided | segmented into multiple in the width direction of a sheet material.

As shown in FIGS. 6 to 8, the first sheet material 1S is supplied in the direction of arrow A1. This first sheet material 1 </ b> S constitutes the outer layer material 33. The first sheet material 1S is slit in the width direction by the outer layer material slit cutter 211 and divided into a plurality of pieces to form a narrow tape-shaped sheet material 33T (outer layer material 33). For example, each tape-shaped sheet material 33T is slit to an equal width (see FIG. 9 for details).
Each tape-like sheet material 33T is supplied between the upper first separation roll 251 and the lower first separation roll 253 while maintaining the position in the width direction of each tape-like sheet material 33T at the time of slitting. A plurality of tape-like sheet materials 33T supplied between the rolls are alternately selected one by one and wound around the upper first separation roll 251 and the lower first separation roll 253 (for example, an upper direction and a different direction). (Downward). That is, a plurality of tape-like sheet materials 33T are alternately separated one by one for the ventral side and the back side (refer to FIG. 10 for details). The different direction is a direction away from the first sheet material 1S from one of the two surfaces of the first sheet material 1S with respect to the first sheet material 1S supplied to the separation position, and the first direction. The direction which leaves | separates from 1st sheet | seat material 1S from the 2nd surface on the opposite side to 1st surface. In other words, what is necessary is just two directions which leave | separate in the opposite direction from both surfaces of the 1st sheet material 1S on both sides of the 1st sheet material 1S, and it does not necessarily need to be a diametrically opposite direction. Accordingly, the upper direction and the lower direction are not limited to the above, and the two directions are different in a plane perpendicular to the respective rotation axes of the upper first separation roll 251 and the lower first separation roll 253. You can also. Further, the arrangement directions of the respective rotation axes of the upper first separation roll 251 and the lower first separation roll 253 may have an angle with respect to the horizontal, for example, 90 degrees. In this case, the upper side and the lower side are the right side and the left side, but in the present embodiment, they are referred to as the upper side and the lower side for convenience. In this embodiment, the directions toward the respective rolls of the upper first separation roll 251 and the lower first separation roll 253 are different directions.

  When the back-side tape-like sheet material 33T wound around the upper first separation roll 251 and wound upward is wound around the upper second separation roll 252, the upper first separation roll 251 and the upper second separation roll 252 In the meantime, the second sheet material 2S is supplied from the direction opposite to the supply direction (arrow A direction) of the first sheet material 1S so as to be directly wound around the upper second separation roll 252. The second sheet material 2 </ b> S constitutes the inner layer material 31. Further, a plurality of elastic body continuous members 3S are prepared in parallel, and in the state where each is extended and the adhesive (not shown) supplied by the adhesive coating device 215 is attached, Supplied together with the second sheet material 2S. At this time, for example, the tape-shaped sheet material 33T is supplied so that the center in the width direction of the elastic body continuous member 3S is positioned at the center in the width direction. This elastic body continuous member 3 </ b> S constitutes the elastic body 35. For example, a hot melt gun is used for the adhesive coating device 215, and a hot melt adhesive is used for the adhesive in this case.

  In this way, pressure is applied between the upper first separation roll 251 and the upper second separation roll 252, and the elastic body continuous member 3S is placed on the second sheet material 2S via the elastic body continuous member 3S. The tape-like sheet material 33T is bonded by the adhesive applied to the tape. At this time, since the tape-like sheet material 33T is wound around the roll surface of the upper first separation roll 251 without being slipped, the position in the width direction of each tape-like sheet material 33T at the time of slitting is maintained. In this state, the tape-shaped sheet material 33T is bonded to the second sheet material 2S without leaving the upper first separation roll 251. As a result, the exterior body continuous member 11S serving as the back side portion 23 composed of the second sheet material 2S to which the tape-like sheet material 33T is bonded via the elastic body continuous member 3S is configured. And the exterior body continuous member 11S of the back side part 23 is reversed in the state wound around the upper side 2nd separation roll 252, and is supplied to the arrow A2 direction.

On the other hand, when the abdominal tape-like sheet material 33T wound around the lower first separation roll 253 and wound downward is wound around the lower second separation roll 254, the lower first separation roll 253 and the lower side are separated. The second sheet material 2S is supplied between the second separation roll 254 and the second separation roll 254 so as to be wound directly from the direction opposite to the supply direction (arrow A1 direction) of the first sheet material 1S. . Further, a plurality of elastic body continuous members 3S are prepared in parallel, and in the state where each is extended and the adhesive (not shown) supplied by the adhesive coating device 215 is attached, Supplied together with the second sheet material 2S. At this time, it is preferable that the tape-like sheet material 33T is supplied so that the center in the width direction of the elastic body continuous member 3S is positioned at the center in the width direction. For example, a hot melt gun is used for the adhesive coating device 215, and a hot melt adhesive is used for the adhesive in this case.
In the adhesive coating apparatus 215, an individual hot melt gun is used for each elastic body continuous member 3S, but an integrated type having a plurality of nozzles for delivering an adhesive corresponding to the position of the elastic continuous member 3S. It is also preferable to use a hot melt gun (not shown).
The adhesive may be applied to the surface of the second sheet material 2S at the position where the elastic continuous member 3S is disposed, instead of being applied to the elastic continuous member 3S. The coating may be continuous or intermittent.
The upper first and second separation rolls 251 and 252 and the lower first and second separation rolls 253 and 254 are rotatable rolls, and the upper first separation roll 251 and the lower first separation roll 253 are rotatable. Can be rotated by a rotation driving means (not shown). An example of the rotation driving means is a motor. Moreover, it is preferable that the roll peripheral surface is a rough surface or a surface having a large frictional force such as rubber so that the sheet can be fed at the peripheral speed. Furthermore, the upper second separation roll 252 and the lower second separation roll 254 may be rolls that are rotated by a rotation driving unit. In this case, the upper first separation roll 251 and the lower first separation roll 253 are rotated at a peripheral speed equivalent to the peripheral speed.

In this way, pressure is applied between the lower first separation roll 253 and the lower second separation roll 254, and the elastic body is continuously formed on the second sheet material 2S via the elastic body continuous member 3S. The tape-shaped sheet material 33T is bonded by the adhesive applied to the member 3S. At this time, since the tape-like sheet material 33T is wound around the roll surface of the lower first separation roll 253 without being slipped, the position in the width direction of each tape-like sheet material 33T at the time of slitting is maintained. Bonded to the second sheet material 2S. As a result, the exterior body continuous member 11S serving as the abdomen side portion 21 where the second sheet material 2S to which the tape-like sheet material 33T is bonded is disposed via the elastic body continuous member 3S is configured. And the exterior body continuous member 11S of the abdominal side part 21 is reversed in the state wound around the lower 2nd separation roll 254, and is supplied in the arrow A3 direction.
Since the tape-shaped sheet material 33T is alternately separated in the vertical direction, the tape-shaped sheet material 33T separated in the upward direction and the tape-shaped sheet material 33T separated in the downward direction are respectively arranged on the second sheet material 2S. The positional relationship is different. Therefore, the positional relationship of the tape-like sheet material 33T arranged on the back-side second sheet material 2S on the back side and the abdominal side, and the tape-like sheet material 33T arranged on the abdominal-side second sheet material 2S When the positions are matched, the supply position of the tape-like sheet material 33T arranged on the back-side second sheet material 2S and the supply of the tape-like sheet material 33T arranged on the abdominal-side second sheet material 2S are provided. The position is different. Therefore, by adjusting the supply position of at least one of the second sheet materials 2S (for example, by shifting one of the second sheet materials 2S in the width direction), the second sheet material 2S is disposed on the back side second sheet material 2S. The positional relationship of the tape-shaped sheet material 33T and the positional relationship of the tape-shaped sheet material 33T disposed on the second sheet material 2S for the ventral side can be made the same.
Each of the back-side and ventral-side second sheet materials 2S to which the tape-like sheet material 33T is bonded is a tape-like sheet material arranged in the width direction of each second sheet material 2S when it is made a diaper. The position of 33T may be different.

  As described above, the tape-like sheet material 33T is bonded to the second sheet material 2S via the elastic material continuous member 3S coated with an adhesive, the second sheet material 2S, the elastic material continuous member. 3S and the tape-like sheet material 33T need to be stacked in this order from the same direction and supplied between the upper first and second separating rolls 251 and 252 and between the lower first and second separating rolls 253 and 254. There is. By supplying in this way, it can prevent that the adhesive agent apply | coated to the elastic body continuous member 3S adheres to a roll surface.

  Next, the position of each exterior body continuous member 11 </ b> S of the ventral side portion 21 and the back side portion 23 is adjusted to a predetermined interval D. In this position adjustment step, as an example, the position of the exterior body continuous member 11S of the ventral side portion 21 is adjusted. That is, while the supply direction of the exterior body continuous member 11S of the abdominal side portion 21 is parallel to the supply direction of the exterior body continuous member 11S of the back side portion 23 (arrow A2 direction) (arrow A4 direction), The surface on the second sheet material 2S side of the exterior body continuous member 11S of the side portion 21 and the surface on the second sheet material 2S side of the exterior body continuous member 11S of the back side portion 23 are in the same plane direction (for example, the upper surface) and at the same height. Say it.

  First, the front and back of the exterior body continuous member 11S of the abdominal part 21 are reversed by the reversing roll 260 in which the roll axis is arranged in a direction perpendicular to the supply direction (arrow A3 direction) of the exterior body continuous member 11S of the stomach side part 21. Let This inversion also reverses the supply direction. Subsequently, the roll axis is set at a predetermined angle with respect to the reversed supply direction so that the supply direction becomes an arrow B direction that is changed laterally (for example, preferably 90 ° direction) with respect to the reversed supply direction. The first roll 261 disposed at (for example, 30 ° to 60 °, preferably 45 °) reverses the front and back of the exterior body continuous member 11S of the ventral side portion 21 and changes the supply direction to the arrow B direction. Next, the second roll 262 changes the supply direction of the exterior body continuous member 11S of the ventral side portion 21 from the horizontal direction to the vertical arrow C direction. Subsequently, the third roll 263 changes the supply direction of the exterior body continuous member 11S of the ventral side portion 21 from the vertical direction to the horizontal direction. Next, a ventral side portion is provided by a fourth roll 264 in which the roll axis is arranged at a predetermined angle (for example, 30 ° to 60 °, preferably 45 °) with respect to the supply direction of the exterior body continuous member 11S of the ventral side portion 21. The front and back surfaces of the exterior body continuous member 11S of 21 are reversed so that the second sheet material 2S side surface of the exterior body continuous member 11S of the abdominal side portion 21 and the second sheet material 2S side of the exterior body continuous member 11S of the back side portion 23. Are parallel to the exterior body continuous member 11S of the back side portion 23 by changing the supply direction to the horizontal direction (for example, preferably 90 ° direction). The supply direction in the direction of arrow A4 is obtained.

  In the first and third rolls 261 and 263, the interval between the exterior body continuous members 11S of the abdomen 21 and the back 23 is set to a predetermined distance D, and the roll diameters of the first and third rolls 261 and 263 are taken into consideration. By adjusting the distance between the second and fourth rolls 262 and 264, the surfaces of the exterior body continuous members 11S of the abdominal side portion 21 and the back side portion 23 on the second sheet material 2S side have the same height. . Further, the first and fourth rolls 261 and 264 are so-called turn rolls, so that they do not rotate and the sheet slides on the roll surface. The reversing roll 260, the second roll 262, and the third roll 263 are rotatable rolls, and may be rotationally driven by a rotational driving means (not shown). An example of the rotation driving means is a motor. Moreover, it is preferable that the roll peripheral surface is a rough surface or a surface having a large frictional force such as rubber so that the sheet can be fed at the peripheral speed. Moreover, it is preferable that the peripheral speed of each roll is a constant speed so that the sheet is not pulled excessively or does not sag.

  In addition, the roll structure of the said inversion roll 260 and the 1st-4th rolls 261-264 is an example, Comprising: The surface by the side of the 2nd sheet | seat material 2S of each exterior body continuous member 11S of the stomach side part 21 and the back side part 23 If the outer body continuous member 11S of the abdominal side portion 21 and the back side portion 23 can obtain a supply direction in a parallel direction, the other roll configuration is adopted. You can also.

  As a method of adjusting the position of each exterior body continuous member 11S arranged on the abdominal side portion 21 and the back side portion 23 at a predetermined interval D, in addition to the method using only the combination of the rolls described above, a tape-like sheet material on the abdominal side After reversing the front and back of the second sheet material 2S to which 33T has been bonded, the back side using the separating means (not shown) in the same manner as in the method of manufacturing the pant-type diaper 10 described with reference to FIGS. The second sheet 2S disposed on the front side and the second sheet 2S disposed on the belly side are supplied in parallel with each other in a state where the tape-like sheet material 33T is disposed on the front surface side (or the back surface side). To be. And what is necessary is just to adjust the height of 2nd sheet | seat material 2S distribute | arranged to the back side, and 2nd sheet | seat material 2S distribute | arranged to the belly side to the same height using a roll (not shown).

Then, the absorptive main body 40 is laminated | stacked so that between the 2nd sheet | seat materials 2S of each exterior body continuous member 11S of the abdominal part 21 and the back | dorsal part 23 may be carried out similarly to the process demonstrated by the example of the above-mentioned manufacturing method. The subsequent steps are performed. In addition, before laminating the absorbent main body 40, the elastic function of the elastic continuous member 3S of the portion to which the absorbent main body 40 of the second sheet material 2S is attached is the same as described in the example of the manufacturing method described above. You may perform the elastic body cutting process made not to express.
As a result, the pant-type diaper 10 (see FIG. 1) is completed, and the configuration described in the above-described example of the pant-type diaper can be obtained.

  The width of the tape-shaped sheet material 33T is preferably substantially equal to or greater than the width of the elastic continuous member 3S. For example, the width of the tape-shaped sheet material 33T is preferably 0.5 mm to 60 mm, and the interval between the tape-shaped sheet materials 33T is preferably 1 mm to 40 mm. More preferably, the width of the tape-shaped sheet material 33T is set to 3 mm to 30 mm, and the attaching interval of the tape-shaped sheet material 33T is set to 3 mm to 30 mm. More preferably, the width of the tape-shaped sheet material 33T is 5 mm to 10 mm, and the interval between the tape-shaped sheet materials 33T is 5 mm to 10 mm.

  Further, since the end in the width direction (end in the height direction of the diaper) of the tape-like sheet material 33T is a free end, when the extension force of the elastic body continuous member 3S is released, the tape-like sheet material 33T is contracted by the contraction. Shrink to form a frill (not shown). For this reason, there exists an effect | action that cuteness can be created as the whole diaper. Further, the bonding position of the tape-shaped sheet material 33T with the second sheet 2S is not limited to the central portion in the width direction (Y direction) of the tape-shaped sheet material 33T, and may be biased to either the width direction. That is, the tape-like sheet material 33T may have a long distance from the bonding position with the second sheet 2S to one edge in the width direction and a short distance to the other edge. Thus, by changing the distance from the bonding position to the edge, frills are likely to be formed in the longer distance. Further, biasing the bonding position of the elastic body continuous member 3S to the tape-shaped sheet material 33T and bonding it to the tape-shaped sheet material 33T is achieved by using the manufacturing method of the present invention with high supply position accuracy of the tape-shaped sheet material 33T. It becomes easy.

  In the manufacturing method of the said 1st embodiment, the exterior body continuous member 11S of the abdominal side part 21 is produced in the process of producing the exterior body continuous member 11S of the back side part 23, and the exterior body continuous member 11S of the abdominal side part 21 is produced. You may produce the exterior body continuous member 11S of the back side part 23 in the process of producing.

In the manufacturing method of the underpants type diaper of the said 1st embodiment, it is the 2nd sheet material in the state which maintained the position of the width direction at the time of slitting several tape-shaped sheet material 33T formed by slitting the 1st sheet material 1S, respectively. By laminating with 2S, one layer region composed of the inner layer material 31 is formed while maintaining the stretchability similar to that of the conventional pants-type diaper and maintaining the wearability to the body and the mobility of the body. Thereby, since air permeability is remarkably improved in a 1 layer area | region, the underpants type diaper 10 which reduced drastically can be provided.
Moreover, since the usage-amount of the outer-layer material 33 can be reduced, in a disposable type underpants type diaper, what is called an environmentally friendly resource-saving product can be manufactured. Furthermore, since the usage amount of the outer layer material 33 can be reduced, the product cost can be reduced. Moreover, the softness of the exterior body 11 improves by having a 1 layer area | region, and the operation | movement at the time of wear becomes smooth, and a comfortable feeling becomes good.

  At the same time, the tape-like sheet material 33T for the abdominal side and the back side is laminated and fixed to the second sheet material 2S while maintaining the position in the width direction at the time of slitting while being wound around the roll. The tape-shaped sheet material 33T can be arranged with high accuracy with respect to the sheet material 2S. The tape-like sheet material 33T preferably suppresses the deviation in the width direction below the width. For example, when the width of the tape-like sheet material 33T is 3 mm, the deviation can be suppressed to 2 mm or less in the width direction. Although details will be described later, it becomes easy to arrange and adhere a plurality of elastic body continuous members 3S to one tape-like sheet material 33T, and the stretch strength is easy depending on the height direction part. Therefore, it is possible to provide a pants-type wearing article having excellent wearability.

In addition, the tape-like sheet material 33T for the ventral side and the back side is in a state in which the position in the width direction at the time of slitting is maintained, and in a state of being wound around the upper first separation roll 251 and the lower first separation roll 253, Since the second sheet material 2S is laminated and fixed, the tension of the tape-shaped sheet material 33T can be stabilized. That is, since the tape-like sheet material 33T can be bonded to the second sheet material 2S in a state where it has a constant tension, the entire exterior body of the pant-type diaper 10 is in a uniform tension state. Get better.
Further, since the tape-like sheet material 33T is not moved in the width direction during conveyance, the accuracy of the bonding position of the tape-like sheet material 33T to the second sheet material 2S can be further improved.

  Further, since the separation interval of the tape-shaped sheet material 33T is the same as the width of the tape-shaped sheet material 33T, the tape-shaped sheet material 33T is laminated and fixed to the second sheet material 2S at equal intervals. As a result, when the pant-type diaper 10 is produced, the tape-like sheet material 33T adhered through the elastic continuous member 3S is uniformly distributed on the entire surface of the pant exterior body 10, and the comfort of wearing is reduced. A good pants-type diaper 10 can be provided. Furthermore, by making the bonding interval of the tape-like sheet material 33T equal, it is possible to obtain an effect of uniformly distributing the stress applied to the body due to the contraction of the elastic body continuous member 3S (elastic body 35). The effect that aesthetics (the aesthetics given by regularity) is also improved is obtained.

  Supply direction of one exterior body continuous member 11S by two rolls (first and fourth rolls 261 and 264) in which the roll axis is arranged at a predetermined angle θ (0 ° <θ <90 °) with respect to the arrow A1 direction. And the height of the exterior body continuous member 11S is increased by two rolls (second and third rolls 262, 263) in which the roll axis is parallel to the sheet supply direction (for example, the direction of arrow A1). Can be adjusted. Thereby, the space | interval of each exterior body continuous member 11S of the abdominal side part 21 and the back side part 23 can be made easy to the predetermined space | interval D, and also each exterior body continuous member 11S of the abdominal side part 21 and the back side part 23 is made. The respective surfaces on the second sheet material 2S side can be easily made the same height. As a result, when laminating the absorbent main body 40 on each exterior body continuous member 11S of the abdominal side portion 21 and the back side portion 23, it is not necessary to adjust the height of each exterior body continuous member 11S. 40 stacking steps are facilitated.

  Further, depending on the configuration of the manufacturing apparatus and the arrangement space of the manufacturing apparatus, the elastic continuous members 3S for the ventral side and the back side and the second sheet material 2S are respectively paired from the same direction with the first, It may be difficult to supply between the two separation rolls 251 and 252 and between the lower first and second separation rolls 253 and 254. In such a case, the supply direction of the elastic continuous member 3S may be reversed, or the supply directions of both the elastic continuous member 3S and the second sheet material 2S may be reversed. The manufacturing method in these structures is demonstrated below.

  Next, a second embodiment of the first embodiment will be described below with reference to FIG. The second embodiment is a method for manufacturing the above-described pant-type diaper 10, and is a manufacturing method for supplying the elastic body continuous member 3S from the opposite direction to the above-described first embodiment.

  As shown in FIG. 11, similarly to the first embodiment, the first sheet material 1S (outer layer material 33) is supplied in the direction of the arrow A1, and is slit into a plurality of pieces in the width direction by the outer layer material slit cutter 211. To obtain a narrow tape-like sheet material 33T (outer layer material 33). Then, each tape-like sheet material 33T is supplied between the upper first separation roll 251 and the lower first separation roll 253 while maintaining the position in the width direction at the time of slitting, and the tape-like sheet material 33T is alternately staggered. By separating the first separation roll 251 and the lower first separation roll 253, the separation is performed in two different directions (for example, upward and downward).

  And like the above-mentioned 1st embodiment, between the upper side 1st separation roll 251 and the upper side 2nd separation roll 252 from the direction opposite to the supply direction (arrow A1 direction) of the 1st sheet material 1S, The two-sheet material 2S (inner layer material 31) is supplied so as to be directly wound around the upper second separation roll 252. Further, in parallel, a plurality of elastic body continuous members 3S (elastic body 35) are in an extended state, and an adhesive (not shown) supplied by the adhesive coating device 215 is attached. Then, the sheet is supplied together with the second sheet material 2S.

  In this way, the second sheet material 2S in which the pressure is applied between the upper first separation roll 251 and the upper second separation roll 252 and the tape-like sheet material 33T is bonded via the elastic body continuous member 3S. The exterior body continuous member 11S which becomes the back side part 23 which consists of is comprised. And the exterior body continuous member 11S of the back side part 23 is reversed in the state wound around the upper side 2nd separation roll 252, and is supplied to the arrow A2 direction.

  On the other hand, the abdominal tape-shaped sheet material 33T is wound around the lower first separation roll 253 and separated downward, and is further wound around the lower second separation roll 254 and conveyed. A guide roll 255 is disposed below the lower second separation roll 254, and the second sheet material 2S for the abdomen is supplied in a direction opposite to the supply direction of the first sheet material 1S. It is wound directly from the lower side and sent between the guide roll 255 and the lower second separation roll 254. Then, between the guide roll 255 and the lower second separation roll 254, on the second sheet material 2S wound around the guide roll 255, from the same direction as the supply direction (arrow A1 direction) of the first sheet material 1S. Then, a plurality of elastic body continuous members 3S, which become the elastic bodies 35 for the ventral side, are supplied in parallel. Each elastic body continuous member 3S is supplied in a state where each elastic body continuous member 3S is stretched and with an adhesive (not shown) supplied by the adhesive coating device 215, and this elastic body continuous member 3S. Then, the tape-like sheet material 33T and the second sheet material 2S that have been wound around and conveyed on the lower second separation roll 254 are bonded to each other. The above-mentioned guide roll 255 is a rotatable roll, and is preferably rotated by the same rotational driving means (not shown) as described above. In this case, it is preferable that the circumferential speed of the guide roll 255 matches the circumferential speed of the lower second separation roll 254. Moreover, it is preferable that the roll surface of the guide roll 255 is a rough surface or a surface having a large frictional force such as rubber so that the sheet does not slide on the roll surface.

  In this way, pressure is applied between the lower second separation roll 254 and the guide roll 255, and the second sheet material 2S is applied to the elastic body continuous member 3S via the elastic body continuous member 3S. The tape-shaped sheet material 33T is bonded by the adhesive. At this time, since the tape-like sheet material 33T is wound around the roll surfaces of the lower first separation roll 253 and the lower second separation roll 254 without slipping, the width direction position at the time of slitting is maintained. Bonded to the second sheet material 2S. Further, the tape-like sheet material 33T is bonded to the second sheet material 2S without leaving the respective roll surfaces of the lower first separation roll 253 and the lower second separation roll 254. As a result, the exterior body continuous member 11S serving as the abdomen side portion 21 composed of the second sheet material 2S to which the tape-like sheet material 33T is bonded via the elastic body continuous member 3S is configured. And the exterior body continuous member 11S of the abdominal side part 21 is supplied in the arrow A5 direction from between the lower side 2nd separation roll 254 and the guide roll 255.

  As described above, in order to bond the tape-shaped sheet material 33T to the second sheet material 2S via the elastic continuous member 3S coated with an adhesive, the lower second separation roll 254 and the guide roll Between 255, the second sheet material 2S, the elastic continuous member 3S, and the tape-shaped sheet material 33T need to be stacked and supplied in this order from the same direction. By supplying in this way, it can prevent that the adhesive agent apply | coated to the elastic body continuous member 3S adheres to a roll surface.

  Next, the position of each exterior body continuous member 11 </ b> S of the ventral side portion 21 and the back side portion 23 is adjusted to a predetermined interval D. In this position adjustment method, the supply direction of the exterior body continuous member 11S of the abdominal side portion 21 is parallel to the supply direction (arrow A2 direction) of the exterior body continuous member 11S of the back side portion 23 in the direction (arrow A4 direction). In addition, the surface on the second sheet material 2S side of the exterior body continuous member 11S of the abdominal side portion 21 and the surface on the second sheet material 2S side of the exterior body continuous member 11S of the back side portion 23 are in the same plane direction (for example, the upper surface) ) And the same height.

  First, the roll shaft is arranged at a predetermined angle (for example, preferably 30 ° to 60 °, more preferably 45 °) with respect to the supply direction (arrow A5 direction) of the exterior body continuous member 11S of the ventral side 21. The roll 261 reverses the front and back of the exterior body continuous member 11S of the ventral side 21 and changes the supply direction to the arrow B1 direction. Next, the supply direction of the exterior body continuous member 11S of the abdominal side portion 21 is changed from the horizontal direction to the vertical direction (arrow C direction) by the second roll 262. Subsequently, the third roll 263 changes the supply direction of the exterior body continuous member 11S of the ventral side portion 21 from the vertical direction to the horizontal direction (arrow B2 direction). Next, by a fourth roll 264 in which the roll axis is arranged at a predetermined angle (for example, preferably 30 ° to 60 °, more preferably 45 °) with respect to the supply direction of the exterior body continuous member 11S of the ventral side portion 21, The second sheet of the exterior body continuous member 11S of the back side portion 23 and the surface of the exterior body continuous member 11S of the abdominal side portion 21 and the second sheet material 2S side surface of the exterior body continuous member 11S of the abdominal side portion 21 are reversed. Supply direction (direction of arrow A4) in a direction parallel to the exterior body continuous member 11S of the back side portion 23 by changing the supply direction with the surface on the material 2S side facing the same surface direction (upper surface) and the same height. )

  Therefore, with the first and third rolls 261 and 263, the interval between the exterior body continuous members 11S of the ventral side portion 21 and the back side portion 23 is set to the predetermined interval D, and the roll diameters of the first and third rolls 261 and 263 are set. By taking into account the adjustment of the distance between the second and fourth rolls 262 and 264, the outer surface continuous member 11 </ b> S of the second sheet material 2 </ b> S side of the outer surface continuous member 11 </ b> S of the ventral side 21 and the back side 23. The surface on the second sheet material 2S side is set to the same height.

  Thereafter, the manufacturing process is the same as the manufacturing method described in the first embodiment.

  Next, a third embodiment of the first embodiment will be described below with reference to FIG. The third embodiment is a method for manufacturing the above-described pants-type diaper 10, and is a manufacturing method for supplying both the elastic body continuous member 3S and the second sheet material 2S from the opposite direction to the first embodiment. .

  As shown in FIG. 12, in the same manner as in the first embodiment, the exterior body continuous member 11S disposed on the back side portion 23 is configured, and the front and back are reversed in a state of being wound around the upper second separation roll 252, Supplied in the direction of arrow A2.

  On the other hand, the abdominal tape-shaped sheet material 33T is wound around the lower first separation roll 253 and separated downward, and is further wound around the lower second separation roll 254 and conveyed. A guide roll 255 is disposed below the lower second separation roll 254, and the second sheet material 2S for the ventral side is supplied from the direction of the arrow A3 similar to the supply direction of the first sheet material 1S. It is sent between the lower second separation roll 254 and the guide roll 255. Then, between the guide roll 255 and the lower second separation roll 254, on the second sheet material 2S, from the same direction as the supply direction (arrow A1 direction) of the first sheet material 1S, elasticity for the ventral side. A plurality of elastic body continuous members 3S to be the body 35 are supplied in parallel. Each elastic body continuous member 3S is supplied in a state where each elastic body continuous member 3S is stretched and with an adhesive (not shown) supplied by the adhesive coating device 215, and this elastic body continuous member 3S. Then, the tape-like sheet material 33T that has been wound around the second lower separation roll 254 and conveyed is adhered.

  In this way, pressure is applied between the lower second separating roll 254 and the guide roll 255, and the elastic continuous member 3S is applied onto the second sheet material 2S via the elastic continuous member 3S. The tape-shaped sheet material 33T is bonded by the processed adhesive. At this time, since the tape-shaped sheet material 33T is wound around the roll surface of the lower first separation roll 253 without being slipped, it is bonded to the second sheet material 2S while maintaining the position in the width direction at the time of slitting. Is done. Further, the tape-like sheet material 33T is bonded to the second sheet material 2S without leaving the respective roll surfaces of the lower first separation roll 253 and the lower second separation roll 254. As a result, the exterior body continuous member 11S serving as the abdomen side portion 21 composed of the second sheet material 2S to which the tape-like sheet material 33T is bonded via the elastic body continuous member 3S is configured. And the exterior body continuous member 11S of the abdominal side part 21 is supplied in the arrow A5 direction from between the lower side 2nd separation roll 254 and the guide roll 255.

  Next, the position of each exterior body continuous member 11 </ b> S of the ventral side portion 21 and the back side portion 23 is adjusted to a predetermined interval D. This position adjustment method is the same as in the second embodiment described above. As a result, the second sheet material 2S side surface of the exterior body continuous member 11S of the abdominal side portion 21 and the second sheet material 2S side surface of the exterior body continuous member 11S of the back side portion 23 are in the same plane direction (upper surface). And the same height and a supply direction (arrow A4 direction) in a direction parallel to the exterior body continuous member 11S of the back side portion 23 is obtained.

  The subsequent manufacturing process is the same as the manufacturing method described in the first embodiment.

  In the second and third embodiments, the same effects as those of the first embodiment can be obtained. Further, in order for the tape-like sheet material 33T to be bonded to the second sheet material 2S via the elastic continuous member 3S coated with an adhesive, between the lower second separation roll 254 and the guide roll 255, The second sheet material 2S, the elastic body continuous member 3S, and the tape-shaped sheet material 33T need to be stacked and supplied in this order from the same direction. By supplying in this way, it can prevent that the adhesive agent apply | coated to the elastic body continuous member 3S adheres to a roll surface.

  Next, 2nd Embodiment of the manufacturing method of this invention is described below with reference to FIG. 2nd Embodiment is a preferable example of the manufacturing method of the underpants type diaper which does not use the elastic body continuous member 3S in the above-mentioned underpants type diaper 10. FIG.

  As shown in FIG. 13, the first sheet material 1 </ b> S (outer layer material 33) having elasticity is supplied in the direction of the arrow A <b> 1 as in the first embodiment of the first embodiment.

  As the first sheet material 1S having elasticity (outer layer material 33), an elastic sheet such as a nonwoven fabric containing elastic fibers or an elastic film can be used. When emphasizing appearance such as touch or cloth, the surface of these stretchable sheets is preferably in the form of having a fiber layer. When this fiber layer is non-stretchable, the fiber layer is made stretchable by stretching or the like so that the non-stretchable fiber layer does not hinder the stretchability of the stretchable sheet. The stretching process includes, for example, a tooth gap process in which the fiber layer partially cuts the bonds between the fibers or stretches the fiber, thereby expanding and contracting the fiber layer without impairing the stretchability of the stretch sheet. Elasticity is developed in the sheet.

The tooth gap process as the stretching process is performed on the entire surface of the first sheet material 1S by the uneven roll 241 having unevenness formed on the roll surface. A concave / convex roll 242 that meshes with the concave / convex roll 241 is disposed at a position facing the concave / convex roll 241. As a result, a groove (not shown) is provided in the width direction of the first sheet material 1S. By this tooth gap processing, the first sheet material 1S imparts extensibility to the fiber layer without impairing the stretchability of the stretchable sheet in the longitudinal direction, thereby causing the first sheet material 1S to exhibit stretchability. The interval between the grooves depends on the thickness of the nonwoven fabric of the first sheet material 1S, but is formed at regular intervals, for example. In addition, when changing the degree to which elasticity is provided for every position, it is also possible to change the space | interval of a groove | channel. For example, when the thickness of the first sheet material 1S is 0.01 mm to 0.2 mm, the groove interval is set to about 2 mm to 5 mm in a region where strong stretchability is desired, and the groove interval is desired in a region where weak stretchability is desired. Is about 0.5 mm to 2 mm. The interval between the grooves also varies depending on the thickness of the first sheet material 1S.
The stretchability of the 1st sheet material 1S here means the stretchability which can replace the stretchability provided by the above-mentioned elastic body continuous member 3S, for example.
Moreover, the processing method will not be limited if the 1st sheet material 1S has desired elasticity with a groove | channel.

  Examples of the first sheet material 1S having stretchability include (1) a sheet in which an extensible fiber layer is integrated on both sides or one side of an elastic fiber layer, and (2) both sides of a net-like elastic sheet or A sheet in which stretchable fiber layers are integrated on one side, (3) a sheet in which stretchable fiber layers are integrated on both sides or one side of an elastic sheet made of an elastic film, and (4) cross each other. An elastic sheet or the like in which a large number of elastic filaments arranged so as to extend in one direction without being stretched are joined to a stretchable nonwoven fabric over their entire length in a substantially non-stretched state can be preferably used.

  As the sheet of (1), for example, (a) a substantially inelastic non-elastic fiber layer is disposed on at least one surface of the elastic fiber layer, and both fiber layers have a fiber form of the constituent fibers of the elastic fiber layer. In this state, the entire surface is joined by thermal fusion at the intersection of the fibers, and a part of the constituent fibers of the inelastic fiber layer enters the elastic fiber layer, and a part of the constituent fibers of the elastic fiber layer is inelastic. Examples include stretchable nonwoven fabrics that are in either or both of the states of entering the fiber layer. Moreover, as said (1)-(3) sheet | seat, it has (b) the elastic layer which has elastic elasticity, and a substantially inelastic nonelastic fiber layer, and both the said layers are laminated | stacked on the thickness direction. A stretchable sheet or the like obtained by stretching a laminated sheet that is partially bonded to each other can be preferably used. As one means for obtaining these stretched and stretchable fiber layers and nonwoven fabrics (1) to (3), it is preferable to perform the above-described tooth gap processing.

  In the stretchable nonwoven fabric of (a), the intersection between the constituent fiber of the elastic fiber layer and the constituent fiber of the non-elastic fiber layer is heat-sealed at and near the interface between the elastic fiber layer and the non-elastic fiber layer. And substantially uniformly bonded over the entire surface. By joining all over, it is prevented that both layers are separated and a space is formed, and it becomes a stretchable nonwoven fabric having a multi-layer structure with a sense of unity like a single nonwoven fabric. The state in which the constituent fibers of the elastic fiber layer maintain the fiber form means that even if most of the constituent fibers of the elastic fiber layer are given heat, pressure, etc., a film or a film containing fibers A state that is not transformed into a structure. Further, in the elastic fiber layer, the intersections of the constituent fibers are thermally fused in the layer. Similarly, in the non-elastic fiber layer, the intersection of the constituent fibers is thermally fused in the layer.

When the non-elastic fiber layer is arranged on both surfaces of the elastic fiber layer, at least one of the surfaces of the elastic fiber layer is in a state in which a part of the constituent fiber enters the elastic fiber layer and one of the constituent fibers of the elastic fiber layer. The portion is in one or both of the states in which the portion has entered at least one inelastic fiber layer.
The elastic fiber layer has the property of being stretchable and contracting when released from the stretched force. Further, it is an aggregate of fibers having elasticity. The elastic fiber layer may be in the form of a web or a nonwoven fabric made of elastic fibers. For example, it may be a nonwoven fabric formed by a spinning blow method, a spun bond method, a melt blow method, or the like. Particularly preferred is a web obtained by the spinning blow method. As the constituent fiber of the elastic fiber layer, for example, a fiber made of thermoplastic elastomer, rubber or the like can be used. In particular, fibers made from thermoplastic elastomers can be melt-spun using an extruder in the same way as ordinary thermoplastic resins, and the fibers thus obtained are easily heat-sealed. Is suitable for the stretchable nonwoven fabric of this embodiment. Examples of the thermoplastic elastomer include styrene elastomers such as SBS, SIS, SEBS, and SEPS, olefin elastomers, polyester elastomers, and polyurethane elastomers. These can be used individually by 1 type or in combination of 2 or more types.

  The inelastic fiber layer has extensibility but is substantially inelastic. The extensibility here refers to the case where the constituent fibers themselves are stretched, and even if the constituent fibers themselves are not stretched, the two fibers that have been thermally fused at the intersection of the fibers are separated, or the fibers are thermally fused. For example, the three-dimensional structure formed by a plurality of fibers may be structurally changed, the constituent fibers may be broken, and the whole fiber layer may be elongated. Examples of the fibers constituting the inelastic fiber layer include fibers made of polyethylene (PE), polypropylene (PP), polyester (PET or PBT), polyamide, and the like. The fibers constituting the inelastic fiber layer may be short fibers or long fibers, and may be hydrophilic or water repellent. Moreover, a core-sheath type or side-by-side composite fiber, a split fiber, a modified cross-section fiber, a crimped fiber, a heat-shrinkable fiber, or the like can also be used. These fibers can be used singly or in combination of two or more. The inelastic fiber layer can be a continuous filament or short fiber web or nonwoven.

  In the stretchable sheet (b), a substantially inelastic non-elastic fiber layer is laminated on both sides or one side of an elastic layer having elastic stretchability, and these are partially joined in a regular pattern. It can be obtained by stretching the laminated sheet.

Next, the first sheet material 1S subjected to the above-mentioned tooth gap processing is slit into a plurality in the width direction by the outer layer material slit cutter 211, and is divided into a plurality of tape-like sheet materials 33T (outer layer material 33). ). For example, each tape-shaped sheet material 33T is slit to an equal width.
And like the above-mentioned 1st embodiment, each tape-shaped sheet material 33T is supplied between the upper side 1st separation roll 251 and the lower side 1st separation roll 253 in the state which maintained the width direction position at the time of a slit. A plurality of tape-like sheet materials 33T supplied between the rolls are alternately wound around the upper first separation roll 251 and the lower first separation roll 253 to be separated in two different directions for the ventral side and the back side. .

  When the back-side tape-like sheet material 33T wound around the upper first separation roll 251 and wound upward is wound around the upper second separation roll 252, the upper first separation roll 251 and the upper second separation roll 252 In the meantime, the second sheet material 2S is supplied so as to be wound directly around the upper second separation roll 252 from the direction opposite to the supply direction (arrow A1 direction) of the first sheet material 1S. At this time, the adhesive 32 is applied in advance to the position where the tape-like sheet material 33T is adhered by the adhesive application device 215.

  Then, pressure is applied between the upper first separation roll 251 and the upper second separation roll 252, and the adhesive 32 is applied to the lower surface side of the second sheet material 2S by an adhesive application device (not shown). The tape-like sheet material 33T is adhered. At this time, the tape-like sheet material 33T is bonded to the second sheet material 2S in a state where the position in the width direction at the time of slitting is maintained. Further, the tape-like sheet material 33T is bonded to the second sheet material 2S without leaving the upper first separation roll 251. Thus, the exterior body continuous member 11S which becomes the back side part 23 which consists of the 2nd sheet material 2S which the tape-shaped sheet material 33T adhere | attached is comprised. And the exterior body continuous member 11S of the back side part 23 is reversed in the state wound around the upper side 2nd separation roll 252, and is supplied to the arrow A2 direction.

  On the other hand, the abdominal tape-shaped sheet material 33T is wound around the lower first separation roll 253 and separated downward, and is further wound around the lower second separation roll 254 and conveyed. A guide roll 255 is disposed below the lower second separation roll 254, and the second sheet material 2S for the ventral side (inner layer material 31) from the direction of arrow A3 similar to the supply direction of the first sheet material 1S. Supply. At this time, the adhesive coating device 215 applies the adhesive 32 to the second sheet material 2S in advance at the position where the tape-shaped sheet material 33T is adhered.

Then, pressure is applied between the lower second separation roll 254 and the guide roll 255, and the tape-like sheet material 33 </ b> T is bonded onto the second sheet material 2 </ b> S by the adhesive 32. At this time, since the tape-like sheet material 33T is wound around the respective roll surfaces of the lower first separation roll 253 and the lower second separation roll 254 without slipping, the position in the width direction at the time of slitting is maintained. In this state, it is bonded to the second sheet material 2S. Further, the tape-like sheet material 33T is bonded to the second sheet material 2S while maintaining a substantially constant tension without leaving the respective roll surfaces of the lower first separation roll 253 and the lower second separation roll 254. As a result, the exterior body continuous member 11 </ b> S serving as the ventral side portion 21 made of the second sheet material 2 </ b> S to which the tape-like sheet material 33 </ b> T is bonded is configured. And the exterior body continuous member 11S of the abdominal side part 21 is supplied in the arrow A5 direction from between the lower side 2nd separation roll 254 and the guide roll 255.
The adhesive 32 supplied to each second sheet material 2S is supplied to a predetermined position (for example, approximately the center or one side in the width direction) where each of the tape-like sheet materials 33T is bonded, and the supply method is It may be continuous or intermittent. For example, a hot melt adhesive or a double-sided adhesive tape is used as the adhesive 32.

  As described above, in order for the tape-like sheet material 33T to be bonded to the second sheet material 2S coated with the adhesive 32, the second sheet material 2S and the tape-like sheet material 33T are laminated in the same direction. It is necessary to be supplied between the upper first and second separation rolls 251 and 252 and between the lower second separation roll and guide rolls 254 and 255. By supplying in this way, it can prevent that the adhesive agent 32 applied to the 2nd sheet material 2S adheres to a roll surface.

  Next, in the same manner as the second embodiment of the first embodiment described above, the positions of the exterior body continuous members 11S of the abdominal side portion 21 and the back side portion 23 are adjusted to a predetermined interval D. In this position adjustment, the supply direction of the exterior body continuous member 11S of the abdominal side part 21 is parallel to the supply direction (arrow A2 direction) of the exterior body continuous member 11S of the back side part 23, and The surface on the second sheet material 2S side of the exterior body continuous member 11S of the side portion 21 and the surface on the second sheet material 2S side of the exterior body continuous member 11S of the back side portion 23 are in the same plane direction (for example, the upper surface) and at the same height. I will arrange it. The subsequent manufacturing steps are the same as those in the first embodiment described above.

In the second embodiment, the same effect as in the first embodiment described above can be obtained. At the same time, since elasticity is imparted to the tape-shaped sheet material 33T itself, it is necessary to arrange an elastic body between the first sheet material 1S (outer layer material 33) and the second sheet material 2S (inner layer material 31). Therefore, it is possible to reduce the material and the material cost accordingly.
In addition, since the first sheet material 1S is stretched with unevenness, the appearance and feel are soft, and the tape-like sheet is formed by making the application width of the adhesive 32 narrower than the width of the tape-like sheet material 33T. Ruffles can also be formed on the material 33T.
Furthermore, by changing the width of the tape-like sheet material 33T, the stretching force is also changed, and it is possible to adjust to an appropriate tightening pressure corresponding to each part such as the waist, the iliac bone, and the waist. For example, it is possible to increase the stretching force and increase the tightening pressure by increasing the width of the waist part and the iliac bone compared to other parts.
Furthermore, in the pant-type diaper 10 without an elastic body, when the stretchability of the laminated region is weak, the elastic body continuous member 3S of the first embodiment is replaced with the first sheet material 1S and the second sheet as necessary. It may be sandwiched between the material 2S.

  Next, a first embodiment of the third embodiment according to the manufacturing method of the present invention will be described below with reference to FIGS. The first mode of the third embodiment is a method for manufacturing a pant-type diaper having a configuration in which part of the pant-type diaper 10 having a different width of the tape-like sheet material 33T is used.

As shown in FIGS. 14 and 15, the first sheet material 1 </ b> S (outer layer material 33) supplied from the arrow A <b> 1 direction is supplied using the outer layer material slit cutter 211 in the same manner as in the first embodiment described above. A plurality of tape-like sheet materials 33T (outer layer material 33) are produced by slitting into a plurality of pieces. At this time, for example, the tape-like sheet material 33T (33Tc) disposed on the iliac is produced in a wide width, and the other tape-like sheet material 33T is produced in an equal width. For example, the tape-like sheet material 33Tc is formed wider than the other tape-like sheet material 33T by about 1.05 to 3 times, preferably about 1.1 to 2 times. And each tape-shaped sheet material 33T is supplied between the upper side 1st separation roll 251 and the lower side 1st separation roll 252 in the state which maintained the width direction position at the time of a slit.
The plurality of tape-shaped sheet materials 33T are separated in two different directions (for example, upward and downward) by being alternately wound around the upper first separation roll 251 and the lower first separation roll 253. That is, the plurality of tape-like sheet materials 33T are separated for the abdominal side and the back side.

  A tape-like sheet material 33T for the back side is wound around the upper first separation roll 251 and separated upward, and further wound around the upper second separation roll 252 and conveyed upward. On the other hand, a pressing pressure roll 257 is disposed on the upper side of the second upper separation roll 252, and the back-side second direction from the same direction (arrow A6 direction) as the supply direction (arrow A1 direction) of the first sheet material 1S. The two-sheet material 2S is supplied and sent between the upper second separation roll 252 and the pressing roll 257. Then, between the pressing roll 257 and the upper second separation roll 252, adhesive coating is applied to the lower side of the second sheet material 2 </ b> S from the same direction as the first sheet material 1 </ b> S supply direction (arrow A <b> 1 direction). An abdominal elastic body continuous member 3S (elastic body 35) previously coated with an adhesive (not shown) is supplied by the device 215, and the upper second separation roll 252 is passed through the elastic body continuous member 3S. The tape-like sheet material 33T wound around and conveyed is laminated and bonded.

  Therefore, the pressure applied between the upper second separation roll 252 and the pressing roll 257 is applied to the elastic continuous member 3S on the second sheet material 2S via the elastic continuous member 3S. The tape-like sheet material 33T is bonded by the agent. At this time, the tape-like sheet material 33T is bonded to the second sheet material 2S in a state where the position in the width direction at the time of slitting is maintained. Further, the tape-like sheet material 33T is bonded to the second sheet material 2S without leaving the respective roll surfaces of the upper first separation roll 251 and the upper second separation roll 252. Each elastic continuous member 3S for the back side is supplied, for example, so as to be arranged at the center in the width direction of each tape-like sheet material 33T for the back side.

Further, the elastic continuous member 3S (3Sc) disposed on the iliac is formed with a wide tape-shaped sheet material 33T (33Tc) disposed on the portion, and therefore, the width of the tape-shaped sheet material 33Tc. A plurality (three as an example) is supplied without protruding from the inside.
Thus, the exterior body continuous member 11S which becomes the back side part 23 which consists of the 2nd sheet material 2S which the tape-shaped sheet material 33T adhere | attached via the elastic body continuous member 3S is comprised. And the exterior body continuous member 11S of the back side part 23 is supplied in the arrow A7 direction in the state which made the tape-shaped sheet material 33T the lower side.

  Furthermore, the front and back of the exterior body continuous member 11S on the back side are reversed and supplied in the direction of arrow A2. For reversal of the front and back, although not shown, as an example, a horizontal roll is arranged on the upper surface side (second sheet material 2S side) of the exterior body continuous member 11S, and the exterior body continuous member 11S is rotated by 90 ° about the supply direction. Rotate and temporarily receive the second sheet material 2S surface side of the exterior body continuous member 11S rotated by the vertical roll. Furthermore, the exterior body continuous member 11S is rotated by 90 ° about the supply direction, and the upper surface side of the exterior body continuous member 11S rotated by another horizontal roll is received. Thereby, the front and back of the exterior body continuous member 11S can be stably reversed with the supply direction as an axis without shaking in the width direction and the height direction. As a result, in the exterior body continuous member 11S of the back side portion 23, the site where a plurality of elastic body continuous members 3Sc are bonded to one tape-like sheet material 33T is the iliac bone in the pant-type diaper continuous body in a later step. Arranged at the height above.

  On the other hand, in the same manner as in the third embodiment of the first embodiment described above, pressure is applied between the lower second separation roll 254 and the guide roll 255, and the belly side is elastic on the second sheet material 2S. The tape-shaped sheet material 33T is bonded by the adhesive applied to the elastic body continuous member 3S via the body continuous member 3S. At this time, the tape-like sheet material 33T is bonded to the second sheet material 2S in a state where the position in the width direction at the time of slitting is maintained. Thus, the exterior body continuous member 11S which becomes the stomach side part 21 which consists of the 2nd sheet material 2S to which the tape-shaped sheet material 33T was adhere | attached via the elastic body continuous member 3S is comprised. And the exterior body continuous member 11S of the ventral part 21 is supplied in the direction of arrow A5. As a result, in the exterior body continuous member 11S of the abdominal side 21, the portion where a plurality of elastic body continuous members 3Sc are bonded to one tape-like sheet material 33T is the iliac bone in the pant-type diaper continuous body in a later step. Arranged at the height above.

Next, in the same manner as the second embodiment of the first embodiment described above, the positions of the exterior body continuous members 11S of the abdominal side portion 21 and the back side portion 23 are adjusted to a predetermined interval D. In this position adjustment step, the supply direction of the exterior body continuous member 11S of the abdominal side portion 21 is changed to the arrow A4 direction parallel to the supply direction (arrow A2 direction) of the exterior body continuous member 11S of the back side portion 23, and The surface on the second sheet material 2S side of the exterior body continuous member 11S of the portion 21 and the surface on the second sheet material 2S side of the exterior body continuous member 11S of the back side portion 23 are in the same plane direction (for example, the upper surface) and at the same height. To arrange.
By the above process, the exterior body continuous member 11S of the abdominal side part 21 and the exterior body continuous member 11S of the back side part 23 in which the wide tape-shaped sheet material 33Tc is arranged outside are obtained.
The subsequent steps are the same as those described in the first embodiment.

  In the manufacturing method according to the first embodiment of the third embodiment, the same effects as those of the first embodiment described above can be obtained. At the same time, by forming a wide width of the tape-like sheet material 33Tc arranged on the iliac, it is possible to adhere a plurality of elastic body continuous members 3Sc to one tape-like sheet material 33Tc. The force can be strengthened, the tightening force on the iliac bone is strengthened, and there is an advantage that the pants-type diaper is less likely to slip off during operation or the like.

  Next, a second embodiment of the third embodiment will be described with reference to FIG. When the tape-like sheet material 33Tc produced in the first sheet material 1S with the wide side of the ventral side portion 21 and the back side portion 23 is continuously taken, in the exterior body continuous member 11S, the widthwise direction of the wide tape-like sheet material 33Tc is increased. On the one side, an interval having a length equivalent to the width of the wide tape-like sheet material 33Tc is widened with another tape-like sheet material 33T. Therefore, in the second embodiment, a manufacturing method in which the distance between adjacent tape-shaped sheet materials 33T on both sides of the wide tape-shaped sheet material 33Tc is equal to the distance between the other tape-shaped sheet materials 33T is shown in FIG. Will be described below.

As shown in FIG. 16, in the first sheet material 1 </ b> S, the wide tape-like sheet material 33 </ b> Tc of the abdominal side portion 21 is taken on one side, and the wide tape-like sheet material 33 </ b> Tc of the back side portion 23 is taken on the other side. Thereby, in the abdominal side part 21, the space | interval with another tape-shaped sheet material 33T in the both sides of the wide tape-shaped sheet material 33Tc becomes equivalent to the space | interval of many other tape-shaped sheet materials 33T. In the back side portion 23, the distance between the tape-like sheet material 33T on both sides of the wide tape-like sheet material 33Tc is equal to the distance between many other tape-like sheet materials 33T. In this way, it is possible to produce a wide width of a part of the tape-shaped sheet materials 33T in a state where the intervals between the tape-shaped sheet materials 33T are made uniform.
In this case, the tape-like sheet material 33T can be bonded to the second sheet material 2S (not shown) via the elastic body continuous member 3Sc by applying the manufacturing methods of the first and second embodiments described above.

In the third embodiment, two tape-like sheet materials 33Tc are made wide and a plurality of elastic continuous members 3S corresponding to the tape-like sheet material 33Tc are arranged. The number of elastic body continuous members 3S corresponding to 33Tc may be different from the number of elastic body continuous members 3S corresponding to the tape-like sheet material 33Tc of the back side portion 23. Moreover, you may arrange | position the elastic body continuous member 3S of different thickness.
For example, when arranged on the waist, on the iliac bone, the waist, etc., the number of elastic body continuous members 3 </ b> S on the abdominal part 21 and the dorsal part 23 may be changed. By increasing the number of elastic body continuous members 3S, the stretching force can be increased and a strong clamping force can be obtained. Moreover, you may change the number of each elastic body continuous member 3S of the ventral | abdominal side part 21 and the back | dorsal side part 23. FIG. For example, by increasing the number of elastic body continuous members 3S on the back side portion 23 more than that on the abdominal side portion 21, the stretching force of the back side portion 23 can be increased, and the diaper can be prevented from falling off. Moreover, the elastic force of the abdominal side part 21 can be strengthened by making the number of the elastic body continuous members 3S of the abdominal side part 21 larger than the back side part 23, and the slippage of the diaper can be suppressed.

Next, the case where a pants-type diaper is produced using the tape-like sheet material 33T slit into an equal width will be described below with reference to FIG. In FIGS. 17 to 19, hatching is shown for easy understanding of the position of the tape-like sheet material 33 </ b> T.
FIG. 17 (1) shows a side view of a main part of a diaper produced using a tape-shaped sheet material 33T that is slit into a uniform width. The number of tape-like sheet materials 33T arranged on the ventral side portion 21 and the back side portion 23 is the same. The positional relationship between the second sheet material 2S disposed on the back side portion 23 and the tape-shaped sheet material 33T, and the positional relationship between the second sheet material 2S disposed on the ventral side portion 21 and the tape-shaped sheet material 33T. Similarly, the supply position of the second sheet material 2S disposed on each of the back side portion 23 and the abdominal side portion 21 with respect to the tape-like sheet material 33T is adjusted. That is, the distance between the one end side in the width direction of the second sheet material 2S and the end side on the one end side side in the width direction of the tape-like sheet material 33T closest to the end side is the same. When a diaper is produced using the second sheet material 2S bonded with the tape-shaped sheet material 33T in this way, the tape-shaped sheet material 33T bonded to the second sheet material 2S arranged on the ventral side portion 21 and the back The tape-like sheet material 33T bonded to the second sheet material 2S disposed on the side portion 23 overlaps with the side seal portion 25. In this case, the side seal part 25 has a strength relationship, and the ease of peeling at the side seal part 25 is improved.
In the above example, the widths of the second sheet material 2S disposed on the ventral side portion 21 and the second sheet material 2S disposed on the back side portion 23 are the same. Hereinafter, the width of the second sheet material 2S is the same.

  Note that the tape-like sheet material 33T disposed on the stomach side portion 21 in the state where the diaper is produced is changed by changing the supply position of the second sheet material 2S with respect to the tape-like sheet material 33T when the tape-like sheet material 33T is bonded. And the tape-like sheet material 33T arranged on the back side portion 23 can be shifted. For example, by shifting the supply position of the second sheet material 2S by the width of one tape-shaped sheet material 33T from the configuration shown in FIG. 17 (1), as shown in FIG. 25, the tape-shaped sheet adhered to the second sheet material 2S disposed on the back side portion 23 between the tape-shaped sheet material 33T adhered to the second sheet material 2S disposed on the ventral side portion 21. The material 33T is arranged, and the tape-like sheet material 33T does not overlap. In this case, since it is not necessary to adjust the flow of the second sheet material 2S, processing can be performed without worrying about the transportability of the entire exterior body.

Further, when the number of tape-like sheet materials 33T arranged on the abdominal side portion 21 and the number of tape-like sheet materials 33T arranged on the back side portion 23 are different, for example, when one is an odd number and the other is an even number, explain.
As an example, referring to FIG. 18 (1), when six tape-like sheet materials 33T are arranged on the ventral side portion 21 and the number of tape-like sheet materials 33T arranged on the back side portion 23 is seven. I will explain it. A second sheet material 2S disposed on the abdominal side portion 21 to which the tape-shaped sheet material 33T separated by an outer layer material slit cutter (not shown) is bonded; a second sheet material 2S disposed on the back side portion 23; However, in the case of the same position in plan view (however, the position in the height direction is different), one end side in the width direction of the second sheet material 2S disposed on the back side portion 23 and the tape-like sheet material closest to this end side. The distance a between the one end side in the width direction of 33T and the width of one end side in the width direction of the second sheet material 2S disposed on the ventral side 21 and the width of the tape-like sheet material 33T closest to the end side The distance b from the end on the one end side in the direction differs by the width of the tape-like sheet material 33T. The 2nd sheet material 2S was supplied with respect to the tape-shaped sheet material 33T so that it may be arrange | positioned in this way, it mutually adhered, and the diaper was produced using this 2nd sheet material 2S. In this case, the positional relationship between the tape-shaped sheet material 33T disposed on the ventral side portion 21 of the diaper side seal portion 25 and the tape-shaped sheet material 33T disposed on the back side portion 23 is alternately arranged. And do not overlap.

Further, with reference to FIG. 18 (2), a case will be described in which the number of tape-like sheet materials 33T arranged on the abdominal side portion 21 and the back side portion 23 is different as described above. In this example, a distance a between the one end side in the width direction of the second sheet material 2S disposed on the back side portion 23 and the end side on the one end side in the width direction of the tape-like sheet material 33T closest to the end side; The distance b between the one end side in the width direction of the second sheet material 2S disposed on the ventral side 21 and the end side on the one end side in the width direction of the tape-like sheet material 33T closest to the end side is the same. This is the case. The 2nd sheet material 2S was supplied with respect to the tape-shaped sheet material 33T so that it may be arrange | positioned in this way, it mutually adhered, and the diaper was produced using this 2nd sheet material 2S. In this case, the tape-shaped sheet material 33T disposed on the stomach side portion 21 of the side seal portion 25 of the diaper and the tape-shaped sheet material 33T disposed on the back side portion 23 overlap. Since the tape-like sheet material 33T is arranged less in the ventral side portion 21 than in the back side portion 23, the ventral side portion 21 that does not overlap the tape-like sheet material 33T in the back side portion 23 in the side seal portion 25. The tape-shaped sheet material 33T is produced.
In the case of the configuration shown in FIGS. 18 (1) and 18 (2), the expansion / contraction range and stress can be adjusted, and the degree of freedom of exterior body specifications (for example, tightening stress design) is expanded. Moreover, in either structure, since the back side part 23 has one tape-shaped sheet material 33T below, it is excellent in the fit property of a collar part.

Next, the case where a pants-type diaper is produced using the tape-like sheet material 33T having the tape-like sheet material 33Tc slit into different widths will be described below with reference to FIG.
The side view of the main part of the diaper shown in FIG. 19 is the case of the tape-like sheet material 33T having the tape-like sheet material 33Tc shown in FIG. 15, and the second sheet material with respect to the tape-like sheet material 33T. The supply position of 2S was adjusted to bond each other, and a diaper was produced using the second sheet material 2S. In this case, the tape-shaped sheet material 33T disposed on the stomach side portion 21 of the side seal portion 25 of the diaper and the tape-shaped sheet material 33T disposed on the back side portion 23 overlap. Moreover, the tape-like sheet materials 33Tc having different widths also overlap each other.

Next, another example in which a pants-type diaper is produced using a tape-like sheet material 33T having a tape-like sheet material 33Tc slit into different widths will be described below with reference to FIG.
The main part side view of the diaper shown in FIG. 20 is the case of the tape-like sheet material 33T having the tape-like sheet material 33Tc shown in FIG. 16, and the second sheet material with respect to the tape-like sheet material 33T. The supply position of 2S was adjusted to bond each other, and a diaper was produced using the second sheet material 2S. In this case, the tape-shaped sheet material 33T disposed on the stomach side portion 21 of the side seal portion 25 of the diaper and the tape-shaped sheet material 33T disposed on the back side portion 23 overlap. Moreover, the tape-like sheet materials 33Tc having different widths also overlap each other. Furthermore, the tape-shaped sheet material 33Tc having a different width disposed on the abdominal side portion 21 and the tape-shaped sheet material 33Tc having a different width disposed on the back-side portion 23 overlap each other in the side seal portion 25. Further, the positions between the tape-like sheet materials 33T corresponding to the positions where the tape-like sheet materials 33T having different widths are overlapped also overlap.

  Next, in the embodiment described with reference to FIGS. 11 to 14, a method for adjusting the position of each exterior body continuous member 11 </ b> S disposed on the abdominal side portion 21 and the back side portion 23 to a predetermined distance D will be described. As this method, in addition to the above-described method using only the combination of rolls, a separation means (not shown) is used on the dorsal side in the same manner as the manufacturing method of the pant-type diaper 10 described with reference to FIGS. There is a method in which the second sheet 2S arranged and the second sheet 2S arranged on the belly side are supplied in a parallel direction so that the tape-like sheet material 33T is arranged on the surface side. In this method, the second sheet material 2S disposed on the back side and the second sheet material 2S disposed on the belly side are different in height, but the difference in height is, for example, two rolls (see FIG. (Not shown) may be adjusted to the same height.

  Next, 4th Embodiment which concerns on the manufacturing method of the underpants type wearing article of this invention is described with reference to FIG. FIG. 21 is a main part plan view showing a case where a plurality of elastic body continuous members 3S are supplied in FIG. 8A of the first embodiment, unlike the first to third embodiments. is there. Further, in the fourth embodiment, in the first to third embodiments, the tape-shaped sheet material 33T is maintained without being shifted from being slit to being bonded to the second sheet material 2S. Is used.

As shown in FIG. 21, a plurality of thin elastic continuous members 3S are supplied to one tape-like sheet material 33T, and a plurality of thin elastic members 3T are provided between the second sheet material 2S and the tape-like sheet material 33T. It becomes possible to adhere | attach via the elastic body continuous member 3S. At this time, it is preferable that the thickness and the number of thin elastic continuous members 3S are taken into consideration so that the elastic force equivalent to the elastic force of the single elastic continuous member 3S is obtained. Further, since the position in the width direction of the tape-like sheet material 33T at the time of the slit is maintained, the tape-like sheet material 33T is positioned with high accuracy. Even if the thin elastic continuous member 3S is bonded, the elastic continuous member 3S can be bonded so as to be within the width of the tape-shaped sheet material 33T without protruding from the tape-shaped sheet material 33T.
Therefore, since a plurality of thin elastic continuous members 3S can be bonded to one tape-like sheet material 33T, the elastic continuous member 3S can be made less visible by reducing the elastic force without reducing the stretching force. This makes it difficult for the wearer to be aware of the tightening force caused by the elastic body (elastic body continuous member 3S), thereby improving the wearing feeling.
For example, although depending on the tape-like sheet material 33T, when the tape-like sheet material 33T having a basis weight of about 16 g / m ² and a thickness of about 0.02 mm is used, the thickness is about 0.1 mm to 1 mm. By using the body continuous member 3S, it becomes difficult to see by setting the interval to about 1 mm to 5 mm. Preferably, the thickness is set to about 0.1 mm to 0.3 mm, and the interval is set to about 2 mm to 4 mm.

Each said embodiment and each embodiment can be combined suitably.
For example, the fourth embodiment can be combined with the first to third embodiments.
A case where the second embodiment of the third embodiment and the fourth embodiment are combined will be described. For example, in the 1st sheet material 1S, the part which took tape-shaped sheet material 33Tc in the stomach side part 21 will have the space | interval corresponding to tape-shaped sheet material 33Tc in the back side part 23. Therefore, in the back side part 23, the expansion-contraction force of the part becomes weak. Therefore, in the back side portion 23, by adhering a plurality of elastic body continuous members 3S at the portion of the tape-like sheet material 33T adjacent to both sides of the portion where the interval of the tape-like sheet material 33T is widened, the portion The expansion / contraction force of the tape-shaped sheet material 33T is widened to compensate for the portion where the expansion / contraction force is reduced.

In each of the above embodiments, a pant-type diaper is shown as an example of the pant-type wearing article of the present invention. However, a pant-type diaper cover that is used with an absorbent main body disposed on the skin surface side is also preferable. The absorbent main body is not particularly limited as long as it absorbs excreted urine and the like, and examples thereof include an absorbent pad such as a urine collecting pad. The absorbent pad includes, for example, a liquid-permeable surface sheet, a liquid-impermeable leak-proof sheet, and a liquid-retaining absorbent interposed between the two sheets, and is formed in a vertically long shape such as a rectangular shape in plan view. The thing which was done is mentioned. Preferably, a pair of left and right solid guards are formed on both sides of the absorbent pad in the longitudinal direction, and each solid guard is for forming a solid guard having a solid guard elastic member on both sides of the absorbent pad in the longitudinal direction. It is preferable that the sheet material is disposed. The longitudinal direction of such an absorbent pad is passed from the wearer's back side to the stomach side through the crotch, and the liquid-permeable sheet side of the pad is disposed so as to contact the wearer's skin. It is preferable to wear the diaper cover so as to cover the absorbent pad.
Further, the pant-type wearing article of the present invention is a concept that includes absorbent articles in general having a pant-type structure, such as a sanitary short and a shorts napkin, in addition to the pant-type diaper as described above. This pants-type wearing article may be for infants or for adults.

10 Pants-type wearing articles (pants-type diapers)
DESCRIPTION OF SYMBOLS 11 Exterior body 11S Exterior body continuous member 13 Crotch part 21 Abdominal side part 21A, 21B Side edge part 23 Back side part 23A, 23B Side edge part 31 Inner layer material 33 Outer layer material 35 Elastic body 1S 1st sheet material 2S 2nd sheet material 3S elastic body continuous member 33T, 33Tc Tape-like sheet material

Claims (7)

A method for manufacturing a pants-type wearing article,
Forming a plurality of tape-shaped sheet materials by slitting a plurality of first sheet materials constituting the exterior body in the width direction;
The plurality of tape-shaped sheet materials are conveyed alternately in different directions while maintaining the width direction position at the time of the slit, and separated into abdominal side and back side,
Each of the abdominal and dorsal tape-like sheet materials is laminated and fixed to separate abdomen and dorsal second sheet materials while maintaining the widthwise position at the time of the slit, Obtaining an exterior body continuous member disposed on the back side and an exterior body continuous member disposed on the back side;
Adjusting the position of the exterior body continuous member disposed on the ventral side portion and the exterior body continuous member disposed on the back side portion at a predetermined interval;
Fixing the absorbent main body so as to pass between the exterior body continuous member disposed on the ventral side portion and the exterior body continuous member disposed on the back side portion;
The exterior body continuous member disposed on the abdominal side and the exterior body continuous member disposed on the back side are overlapped with the second sheet materials facing each other, and the exterior body continuous members are overlapped with each other. Joining at predetermined intervals in the direction;
The manufacturing method of the underpants type wearing article provided with the process of cut | disconnecting the said exterior body continuous member in the width direction by the said junction part.   The step of separating the abdominal tape-shaped sheet material and the back-side tape-shaped sheet material is performed by alternately selecting the plurality of tape-shaped sheet materials one by one. The manufacturing method of the underpants type wearing article of Claim 1 which isolate | separates and conveys in the said different direction by winding to a roll.   Of the pair of separation rolls, the tape-like sheet material for the stomach side wound around one separation roll is laminated on the second sheet material for the stomach side while maintaining the winding state, and the other separation roll The manufacturing method of the underpants-type wearing article of Claim 2 which laminates | stacks the said tape-shaped sheet material for back | dorsals wound on the said 2nd sheet | seat material for backs while maintaining the winding state.   The method for manufacturing a pants-type wearing article according to claim 1, 2 or 3, wherein a separation interval of the tape-shaped sheet material is the same as a width of the tape-shaped sheet material.   The method for producing a pants-type wearing article according to any one of claims 1 to 4, wherein an elastic body continuous member is interposed between the tape-shaped sheet material and the second sheet material. .   The step of adjusting the positions of the exterior body continuous members of the abdomen and the back side at predetermined intervals includes a surface on the second sheet material side of the abdomen and a surface on the second sheet material side of the back side. The manufacturing method of the underpants type wearing article of any one of Claims 1 thru | or 5 which distribute | arranges to the same surface direction and the same height. The step of adjusting the position of each of the exterior body continuous members of the abdominal side and the back side at a predetermined interval is performed by translating one supply direction of each of the exterior body continuous members of the abdominal side and the back side. The manufacturing method of the underpants type wearing article of any one of Claim 1 thru | or 6 performed by two rolls to be made and two rolls which adjust one supply height.

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