JP6050969B2 - Pants-type wearing article and manufacturing method thereof - Google Patents

Description

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

  As pants-type wearing articles, disposable pants-type diapers and disposable underwear are known. 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

For the pants-type wearing articles typified by pants-type diapers, users demand a feeling of use that is the same as underwear, and in conventional pants-type diapers, the outer body is laminated with an inner layer material and an outer layer material over almost the entire surface. Therefore, further improvement in flexibility and air permeability 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 outer body of the pants-type wearing article and improving the air permeability. Furthermore, when fixing the tape-like sheet material (strip-like sheet base material) which cut | disconnected the sheet | seat like a nonwoven fabric narrowly, the manufacturing method of the underpants type wearing article which distributes a tape-like sheet material to a predetermined position accurately and stably About.

  The present invention has an abdominal side portion disposed on the abdomen side of the wearer, a crotch portion disposed on the crotch portion, and a back side portion disposed on the back side, and a side edge portion of the abdominal side portion, A pants-type wearing article formed by joining a side edge portion of a back side portion to form a pants shape, wherein the first sheet material and the second sheet material are laminated on the abdomen side portion and the back side portion. A plurality of the first sheet materials are arranged in the height direction of the exterior body, and the plurality of first sheet materials are arranged adjacent to each other without overlapping each other, The body provides a pants-type wearing article having elasticity in the waist circumference direction.

  Further, the present invention is a method for producing a pants-type wearing article, comprising preparing a plurality of tape-shaped first sheet materials by arranging them so as not to overlap each other in the width direction. , Maintaining the arrayed state of the plurality of first sheet materials, laminating and fixing with the second sheet material, and obtaining an exterior body, and wearing the abdomen side portion disposed on the abdomen side of the wearer The exterior body on the back side portion arranged on the back side of the person is overlapped with each other, the exterior body is joined at a predetermined interval, and the exterior body is cut in the width direction to be separated into individual pants-type wearing articles. And a process for producing a pants-type wearing article.

  The pants-type wearing article of the present invention maintains the same stretchability as that of conventional pants-type wearing articles and maintains the adaptability to the wearer's body and the mobility with respect to the movement of the wearer, while the outer layer material is disconnected. The amount of wrinkles is increased by the action, the waist area is softened, the air permeability of the area can be increased, and the stuffiness can be reduced.

  By the method for producing a pants-type wearing article of the present invention, the above-described pants-type wearing article having improved stretchability, adaptability to the body, breathability, skin hiding property, and the like can be easily produced.

It is the perspective view which showed one preferable embodiment (1st Embodiment) of the underpants type wearing article of this invention. It is the disassembled perspective view which showed one preferable embodiment of the underpants type wearing article of this invention. It is (1) perspective view, (2) principal part expanded sectional view, and (3) principal part enlarged plan view which showed 1st Example of the underpants type wearing article. It is (1) perspective view, (2) principal part expanded sectional view, and (3) principal part enlarged plan view which showed 2nd Example of the underpants type wearing article. It is (1) perspective view, (2) principal part expanded sectional view, and (3) principal part enlarged plan view which showed 3rd Example of the underpants type wearing article. It is (1) perspective view, (2) principal part expanded sectional view, and (3) principal part enlarged plan view which showed 4th Example of the underpants type wearing article. It is the perspective view which showed 2nd Embodiment of the underpants type wearing article. It is the perspective view which showed the outline of the manufacturing process of the 1st embodiment which concerns on preferable one Embodiment (1st Embodiment) of the manufacturing method of the underpants type wearing article of this invention. It is the (1) top view and (2) front view which showed the principal part of the 1st embodiment typically. It is the front view which showed typically the principal part of the manufacturing process of the 2nd embodiment which concerns on the manufacturing method of the underpants type wearing article of this invention. It is the front view which showed typically the principal part of the manufacturing process of the 3rd embodiment which concerns on the manufacturing method of the underpants type wearing article of this invention. It is the front view which showed typically the principal part of the manufacturing process of the 4th embodiment which concerns on the manufacturing method of the underpants type wearing article of this invention. It is the top view which showed the outline of the manufacturing process of the 5th embodiment which concerns on the manufacturing method of the underpants type wearing article which concerns on this invention. It is the top view which showed the outline of the modification of the manufacturing process which concerns on a 5th embodiment. It is the perspective view which showed the outline of the manufacturing process which concerns on preferable one Embodiment (2nd Embodiment) of the manufacturing method of the underpants type wearing article which concerns on this invention.

A preferred embodiment (first embodiment) of a pants-type wearing article according to the present invention will be described below with reference to FIGS. 1 and 2.
In the pant-type wearing articles 10 and 100 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 a “waist circumference direction”.

As shown in FIGS. 1 and 2, a pants-type wearing article 10 according to the present embodiment is, for example, a pants-type diaper, and includes an abdomen side portion 21 arranged on the wearer's belly side and an inseam arranged on the crotch portion. It has the part 13 and the back side part 23 distribute | arranged to 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 exterior body 11 has elasticity in the waist direction of the pant-type diaper 10.
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” is a region between the position where the outer base of the thigh is located in the body height direction (Y direction) that is the direction from the upper edge of the waist opening 12 to the lower part thereof. Say.

  The exterior body 11 is configured by laminating an outer layer material 33 (first sheet material) and an inner layer material 31 (second sheet material). A plurality of outer layer materials 33 are arranged in the height direction (Y direction) of the exterior body 11. The outer layer material 33 is arranged so that the outer layer materials 33 and 33 are adjacent to each other without overlapping. In other words, the outer layer materials 33 and 33 are arranged without overlapping each other without having a gap between the outer layer materials 33. For example, the outer layer material 33 is arranged in a state where one outer layer material is slit into a plurality of outer layer materials. In FIG. 2 (2), the part shown with the arrow of the outer layer material 33 shows the part slit. “Adjacent” is a state in which the outer layer materials 33, 33 are arranged without a gap, and when the stretchable exterior body 11 is in a contracted state, it is between the outer layer materials 33, 33. Even if the inner layer material 31 can be expected, it is not said that there is no gap. The observation of whether the outer layer materials 33, 33 are overlapped or adjacent to each other is the arrangement of each material in a state where the pants-type wearing article is unfolded as shown in FIG. It is the state observed without expressing. When the length of the inner layer material 31 and the length of the outer layer material 33 are the same when observed in the length direction (Y direction) in the laminated region where the inner layer material 31 and the outer layer material 33 of the outer package 11 are laminated. Think of it as “adjacent”.

  The laminated region in which the inner layer material 31 and the outer layer material 33 are laminated has elasticity in the waist direction of the pant diaper 10, that is, in the width direction (X direction). The laminated region preferably includes 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, it is also preferable that both or one of the inner layer material 31 and the outer layer material 33 is made of a stretchable material.

As a sheet as a material of the inner layer material 31 and the outer layer material 33, for example, non-woven fabrics, woven fabrics, knitted fabrics, and resins by various manufacturing 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.

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 three-dimensionally shaped nonwoven fabric. A fiber that has been subjected to a hydrophilic treatment with a composite fiber of polyethylene terephthalate and polyethylene can be preferably used. Hydrophilic fibers such as rayon may be included. Moreover, the sheet | seat which opened the resin film as the surface sheet 41 can also be used. You may use the composite sheet which integrated said various nonwoven fabrics and the opened resin film.

  The back sheet 42 is not particularly limited as long as it is waterproof. Moreover, it is preferable that the back surface sheet 42 has moisture permeability. As a sheet having waterproofness and moisture permeability, for example, a film is formed by melt-kneading a hydrophobic thermoplastic resin and a fine inorganic filler made of calcium carbonate or the like or an incompatible organic polymer, etc. Examples thereof include a porous film obtained by uniaxially or biaxially stretching a film. 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. The inseam sheet 47 can use various non-woven fabrics in order to give a cloth-like appearance.

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 and cotton, synthetic fibers (preferably those having hydrophilicity or subjected to hydrophilization 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 containing hydrophilic fibers such as cotton and rayon, and non-woven fabric obtained 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.

  In the pants-type diaper 10 of this embodiment, the amount of the heel increases due to the action of the outer layer material 33 being divided into a plurality, and the waist area is softened. Further, a plurality of outer layer materials 33 are arranged in the height direction of the exterior body 11, and the outer layer materials 33, 33 are arranged adjacent to each other without being overlapped with each other. Breathability can be obtained at the portion between the outer layer members 33 while maintaining the ability and maintaining the wearability to the body and the mobility of the body. Therefore, stuffiness can be reduced. Moreover, since the outer package 11 has a two-layer structure of the inner layer material 31 and the outer layer material 33 and is adjacent to the outer layer material 11, the skin becomes difficult to see through and the concealability of the skin can be improved.

  Next, an example of the arrangement configuration of the outer layer material 33, the inner layer material 31, and the elastic body 35 will be described with respect to the preferred embodiment. First, although the 1st Example of the underpants type diaper 10 of 1st Embodiment is demonstrated, a different point is demonstrated about the below-mentioned other Example and 2nd Embodiment. The points that are not particularly described are the same as those in the first embodiment and the first example, and the described descriptions are applied as appropriate. Moreover, the same code | symbol is attached | subjected to the same material and part.

  A first embodiment of the pant-type diaper 10 will be described with reference to FIG. As shown in FIG. 3, the pants-type diaper 10 (10A) of the first example is elastic with an adhesive (not shown) such as a hot-melt adhesive in the pant-type diaper 10 of the first embodiment described above. A plurality of outer layer materials 33 are bonded to the inner layer material 31 adjacent to the body length direction (Y direction) of the pant-type diaper 10 via a body 35. The elastic body 35 is fixed to the outer layer material 33 and the inner layer material 31 in an expanded state. The pants-type diaper 10 uses the same number of outer layer materials 33 as the number of elastic bodies 35 to be attached. However, a plurality of elastic bodies 35 may be arranged for one outer layer material 33. FIG. 3B shows a state in which the inner layer material 31 is folded back to the skin contact surface side in order to cover a portion to which the absorbent main body 40 (not shown) is attached. Moreover, the part shown by the arrow of the outer layer material 33 is the adjacent part of the outer layer materials 33, 33, and the outer layer materials 33, 33 are separated.

  In the central region of the exterior body 11 to which the absorbent main body 40 is fixed, the elastic body 35 is cut over a plurality of locations, and the laminated region of the inner layer material 31 and the outer layer material 33 has substantial stretchability. Absent.

  The width of the outer layer material 33 is set as appropriate. For example, the width of the outer layer material 33 is preferably substantially equal to or greater than the width of the elastic body 35. For example, as a baby pants-type diaper, for example, the outer layer material 33 has a width of 1 mm or more, preferably 3 mm or more, more preferably 5 mm or more, and 60 mm or less, preferably 40 mm or less, more preferably 30 mm or less, More specifically, it is 1 mm to 60 mm, preferably 3 m to 40 mm, and more preferably 5 mm to 30 mm. The bonding interval of the outer layer material 33 is set to 0 mm when the outer layer material 33 is expanded. That is, there is no gap between the outer layer materials 33 and the outer layer materials 33 and 33 are arranged so as not to overlap each other. Thus, if the width | variety of the outer-layer material 33 and a sticking space | interval are set, the wearing comfort of the underpants type diaper 10 will become a more favorable thing. Furthermore, by arranging the width of the outer layer material 33 to be a constant width, it is possible to obtain an effect that the stress applied to the body is uniformly dispersed by the contraction of the elastic body, and the appearance appearance (regularity appearance) is also enhanced. An effect is obtained.

  The elastic body 35 is fixed to the outer layer material 33 and the inner layer material 31 in a stretched state in a part of the width direction (Y direction) of each outer layer material 33. Thereby, the outer layer material 33 and the inner layer material 31 are fixed. Specifically, as shown in FIG. 3 (3), the elastic body 35 is fixed at the center in the width direction (Y direction) of each outer layer material 33, and the outer layer material 33 is attached to the inner layer material 31 at the center in the width direction. It is fixed. Since the end portion in the width direction (end portion in the height direction of the diaper) of the outer layer material 33 is a free end, when the extension force of the elastic body 35 is released, the outer layer material 33 contracts by the contraction and frills (not shown). Form. For this reason, while having the effect that softness improves, there exists an effect | action that cuteness can be created as the whole diaper. Further, the bonding position of the outer layer material 33 with the inner layer material 31 is not limited to the central portion in the width direction (Y direction) of the outer layer material 33, and may be biased in either of the width directions. That is, the outer layer material 33 may have a long distance from the bonding position with the inner layer material 31 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, the frill is more easily formed in the longer distance. Thereby, frills with different aesthetics can be formed, and flexibility can be improved by large frills.

Further, the side seal portion 25 is a portion where the side edge portion of the abdomen side portion 21 of the exterior body 11 and the side edge portion of the back side portion 23 of the exterior body 11 are respectively joined by seal bonding such as embossing. For example, in the state where the outer layer material 33 (33A) of the ventral side portion 21 and the outer layer material 33 (33B) of the back side portion 23 are arranged in the height direction (Y direction), the inner layer material 31 (31A) of the ventral side portion 21 And the inner layer material 31 (31B) of the back side part 23 is joined. Therefore, in the side seal portion 25, the elastic body 35 (35A) disposed on the ventral side portion 21 and the elastic body 35 (35B) disposed on the back side portion 23 are arranged in the body height direction (Y direction) via the inner layer material 31. Arranged.
This configuration can also be applied to an example using the elastic body 35 described later and the second embodiment. Further, the present invention can be applied to an embodiment that does not use the elastic body 35 described later, except for the elastic body 35.

  As the material of the inner layer material 31 and the outer layer material 33, the sheet described in the first embodiment can be used. Moreover, as a material of the elastic body 35, a normal elastic material used for absorbent articles such as diapers and sanitary napkins can be used. For example, as a material, synthetic rubber such as styrene-butadiene, butadiene, isoprene, neoprene, etc. , Natural rubber, EVA, stretchable polyolefin, polyurethane, etc. The shape of the cross-section is rectangular, square, circular, polygonal or other thread-like or string-like (flat rubber, etc.), or multifilament type Or the like can be used.

In the pant type diaper 10A of the first example, the effects described in the pant type diaper 10 of the first embodiment are obtained. At the same time, stretchability is imparted to the exterior body 11 in the laminated region of the outer layer material 33 and the inner layer material 31 in which the elastic body 35 is disposed. This stretchability improves the suitability of the pants-type diaper. Moreover, since the width direction end part (diaper height direction end part) of the outer layer material 33 is a free end, the outer layer material 33 contracts by the contraction when the elastic body 35 is released, and the frills (not shown). Is formed. For this reason, there exists an effect | action that cuteness can be created as the whole diaper. Furthermore, since the elastic body 35 is covered with the outer layer material 33, the elastic body 35 is protected by the outer layer material 33. As a result, an external force is not directly applied to the outer layer material 33, so that the elastic body 35 is hardly cut.
The outer layer material 33 may be a colored or patterned sheet. By using such a sheet | seat, it becomes possible to provide the underpants type diaper 10 which is excellent in design property.

In the first embodiment shown in FIG. 3, the outer layer material 33 is a plurality of first sheet materials, and the outer layer material 33 (first sheet material) is connected to the inner layer material 31 as the second sheet material via the elastic body 35. However, conversely, for example, the inner layer material 31 is formed as a plurality of first sheet materials, and the inner layer material 31 slit through the elastic body 35 to the outer layer material 33 that is the second sheet material. It may be a configuration in which they are bonded together by a hot melt adhesive. In this case, the amount of wrinkles is increased by the action of the inner layer material 31 being divided into a plurality of parts, and the body side is softened. Further, a plurality of inner layer materials 31 are arranged in the height direction of the exterior body 11, and the inner layer materials 31, 31 do not overlap each other and are arranged adjacent to each other, so that the expansion and contraction is the same as that of a conventional pant-type diaper. The air permeability can be obtained in the portion between the inner layer materials 31 while maintaining the property and maintaining the wearability to the body and the mobility of the body. Therefore, stuffiness can be reduced. Moreover, since the outer package 11 has a two-layer structure of the inner layer material 31 and the outer layer material 33 and is adjacent to the outer layer material 11, the skin becomes difficult to see through and the concealability of the skin can be improved.
Also, the outer layer material 33 may be a plurality of first sheet materials on the abdominal side, and the inner layer material 31 may be a plurality of second sheet materials on the back side. The outer layer material 33 may be a plurality of second sheet materials on the back side.

  Next, a second embodiment of the pant-type diaper 10 will be described with reference to FIG. As shown in FIG. 4, the underpants type diaper 10 (10B) of the second example is the same as the underpants type diaper 10 of the first embodiment described above, but the outer layer material 33 (first sheet material) is interposed via the elastic body 35. As in the first embodiment, a plurality of outer casings 11 are arranged in the height direction, and the outer layer members 33 and 33 are arranged so as not to overlap each other. The pants-type diaper 10 (10B) of the second embodiment has a configuration in which the outer layer material 33 is fixed to the inner layer material 31 by the seal portion 37. That is, the configuration and width of the outer layer material 33 are the same as in the first embodiment. In addition, the part shown by the arrow of the outer layer material 33 is divided.

In this configuration, each elastic body 35 is in an expanded state, and both ends thereof are fixed to the outer layer material 33 and the inner layer material 31 by bonding with an adhesive 39, thereby imparting stretchability to the entire exterior body 11. Yes. Each elastic body 35 is not fixed to the outer layer material 33 and the inner layer material 31 except at both ends thereof. Therefore, in the laminated region of the outer layer material 33 and the inner layer material 31, good stretchability can be obtained without impairing the stretchability of the elastic body 35. In the central region of the exterior body 11 to which the absorbent main body 40 is fixed, the laminated region of the outer layer material 33 and the inner layer material 31 has elasticity.
Further, in this configuration, a plurality of seal portions 37 are regularly arranged in a portion where the inner layer material 31 and the outer layer material 33 are two layers with the elastic body 35 in between, so that the outer layer material 33 is bonded with an adhesive 39 at both ends. The elastic body 35 that is not joined to the inner layer material 31 is less likely to be displaced in the body height direction (Y direction), and can generate wrinkles. The ridge is formed between the adjacent seal portions 37 in the X direction, and is formed on each of the outer layer material 33 and the inner layer material 31. In this second embodiment, the gap between the outer layer material 33 and the inner layer material 31 is created between the outer layer material 33 and the inner layer material 31 in the height direction (Y direction) by the folds, so that the air permeability is improved. Hida also gives the product a design aesthetic. The arrangement of the seal portion 37 may not be regular as in the configuration shown in FIG. In addition, in the configuration shown in FIG. 4, the position of the seal portion 37 may be shifted for each outer layer material 33, and in that case, the position where the wrinkles are made is shifted, so that the position between the inner layer material 31 and the outer layer material 33 is shifted. Air becomes easy to enter and air permeability is improved.

  In the underpants type diaper 10 (10B) of the second example, the same effect as the underpants type diaper 10 of the first embodiment described above can be obtained. At the same time, since the outer layer material 33 is attached to the inner layer material 31 by forming a seal portion 37 at intervals on the side portions in the waist circumference direction of the outer layer material 33, wrinkles are formed in the outer layer material 33. In the raised portion of the ridge, air permeability is also obtained in the width direction of the outer layer material 33 between the outer layer material 33 and the inner layer material 31 (direction of the arrow Y in the drawing). Therefore, air permeability can be secured even in the inner layer material 31 portion to which the outer layer material 33 is attached. Therefore, although it is the exterior body 11 which has a lamination | stacking area | region, it can provide the underpants type diaper 10 (10B) which does not lose softness, is excellent in a stretching property, is highly breathable, and is very hard to stuffy.

A third embodiment of the pant-type diaper 10 will be described with reference to FIG. As shown in FIG. 5, the pants-type diaper 10 (10C) of the third example is the same as the pants-type diaper 10 of the first embodiment described above, but the outer layer material 33 itself is stretchable in the longitudinal direction (waist circumference direction). The outer layer material 33 is attached to the inner layer material 31 with an adhesive 32 in an expanded state. As the adhesive, for example, a hot melt adhesive or a double-sided adhesive tape is used.
Here, the stretchability of the outer layer material 33 itself refers to, for example, stretchability that can replace the stretchability imparted by the elastic body.

As the outer layer material 33 having stretchability, a stretchable 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 that partially cuts the bond between fibers or extends the fiber in the fiber layer, thereby exhibiting stretchability without hindering stretchability of the stretchable sheet. The As shown in FIG. 6 (3), the surface of the outer layer material 33 is formed with irregularities (concave grooves 34) on the surface of the fiber layer by the tooth gap processing.
For example, the grooves 34 are formed at equal intervals. In addition, when changing the degree to which elasticity is provided for every position, it is also possible to change the space | interval of the groove | channel 34. FIG. For example, when the thickness of the outer layer material 33 is 0.01 mm or more and 0.2 mm or less, the interval between the grooves 34 is set to about 2 mm or more and 5 mm or less in a region where strong stretchability is desired, and the groove 34 is formed in a region where weak stretchability is desired. Is set to about 0.5 mm to 2 mm. The interval between the grooves 34 also varies depending on the thickness of the outer layer material 33. In addition, the processing method will not be limited if the outer-layer material 33 has the desired elasticity by the groove | channel 34. FIG.
The width of the outer layer material 33 is in accordance with the first embodiment. In the drawing (2), the portion indicated by the arrow of the outer layer material 33 is divided.
The outer layer material 33 on the absorbent main body 40 is also subjected to tooth gap processing as stretching. After the stretching process, the outer layer material 33 is elongated and joined to the inner layer material 31. After joining, the outer layer material 33 and the inner layer material 31 are heat-insulated (cut by an elastic body) at the corresponding portions on the absorbent main body 40, so that the outer layer material 33 becomes inelastic and loses its elasticity. The tooth gap attached to the outer layer material 33 on the main body 40 becomes inconspicuous.

  As the outer layer material having stretchability, for example, (1) a sheet in which an extensible fiber layer is integrated on both sides or one side of an elastic fiber layer, (2) on both sides or one side of a net-like elastic sheet, A sheet in which stretchable fiber layers are integrated, (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) one without crossing each other. A stretchable sheet or the like in which a large number of elastic filaments arranged so as to extend in the direction are joined to a stretchable nonwoven fabric in their non-stretched state over their entire length can be preferably used.

  As the sheet of (1), for example, (a) an inelastic non-elastic fiber layer is arranged on at least one surface of the elastic fiber layer, and both fiber layers are in a state in which the constituent fibers of the elastic fiber layer maintain the fiber form. In the state where all of the constituent fibers of the non-elastic fiber layer are joined into the elastic fiber layer by thermal fusion at the intersection of the fibers, and a part of the constituent fibers of the elastic fiber layer are in the non-elastic fiber layer. Examples include stretchable nonwoven fabrics that are in either or both states. The sheets (1) to (3) include (b) an elastic layer having elastic stretchability and an inelastic nonelastic fiber layer, and the two layers are partially laminated in the thickness direction. A stretchable sheet or the like obtained by stretching the laminated sheet bonded to the substrate 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. It is bonded uniformly 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.

  The stretchable sheet (b) is a laminate sheet in which inelastic nonelastic fiber layers are laminated on both sides or one side of an elastic layer having elastic stretchability, and these are partially joined in a regular pattern. It is obtained by subjecting to stretching.

  The effect of the pant-type diaper 10 (10C) of the third example is as described in the pant-type diaper 10 of the first embodiment. Further, in this embodiment, an elastic body disposed between the inner layer material 31 and the outer layer material 33 is not required, and the outer layer material 33 is subjected to a stretching process having irregularities, so that a soft appearance and feel are obtained. By making the application width of the adhesive 32 narrower than the width of the outer layer material 33, frills can be formed in the outer layer material 33. In addition, the elastic material can be reduced.

  In addition, by changing the width of the outer layer material 33, the stretching force also changes, 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.

  In the pants-type diaper 10 of the third embodiment, if the stretchability of the laminated region is weak, the elastic body 35 of the first embodiment may be sandwiched between the outer layer material 33 and the inner layer material 31 as necessary. Good.

A fourth embodiment of the pant-type diaper 10 will be described with reference to FIG. In the pant diaper 10 (10D) of the fourth example, the same material as the pant diaper 10A of the first example was used in the pant diaper 10 of the first embodiment described above. In the pant diaper 10 (10D) of the fourth embodiment, the exterior body 11 is stretched. Specifically, in the pants-type diaper 10 of the first embodiment described above, as shown in FIG. 6, an outer layer material fixed via an elastic body 35 with an adhesive (not shown) such as a hot-melt adhesive. 33 and the inner layer material 31 are stretched (for example, tooth gap processing) in the waist circumference direction (X direction). Thereby, the outer layer material 33 and the inner layer material 31 have extensibility. The elastic body 35 is fixed to the outer layer material 33 and the inner layer material 31 in an expanded state. As described above, the stretching method is not limited as long as the outer layer material 33 and the inner layer material 31 are stretchable.
The width of the outer layer material 33 is in accordance with the first embodiment described above. In addition, in drawing (2), the part shown by the arrow of the outer layer material 33 is cut.

  In the pants-type diaper 10 (10D) of the fourth embodiment, the same effect as the pants-type diaper 10A of the first embodiment described above can be obtained. At the same time, the outer layer material 33 and the inner layer material 31 can be extended by performing a tooth gap process as an extension process. Accordingly, the stretchability is exhibited without inhibiting the stretchability of the elastic body 35, so that the wearability of the pant-type diaper 10D is enhanced.

Next, 2nd Embodiment of the underpants type diaper of this invention is described with reference to FIG.
As shown in FIG. 7, a pant-type diaper 100 as an example of a pant-type diaper is configured such that an exterior body 11 is also formed on the crotch part 13 and the inside of the exterior body 11 formed on the crotch part 13 (on the skin contact surface side) ) In which the absorbent main body 40 is arranged. Specifically, the exterior body 11 in the first embodiment described above includes the crotch portion 13 formed by continuously extending from the abdominal side portion 21 to the back side portion 23. An inner layer material 31 is formed on the back side portion 23, the abdominal side portion 21, and the crotch portion 13 of the exterior body 11, and the outer layer material 33 is placed on the inner layer material 31 between the back side portion 23 and the abdominal side portion 21 in the waist circumference direction (X Direction). A plurality of outer layer materials 33 are arranged in the height direction of the exterior body 11, and the outer layer materials 33 and 33 are arranged adjacent to each other without a gap between the outer layer materials 33. Further, the laminated region in which the inner layer material 31 and the outer layer material 33 are laminated has elasticity in the waist circumference direction of the exterior body 11.

Thus, the configuration of the outer layer material 33 according to the present invention can also be applied to the pants-type diaper 100 having an exterior body that is continuously formed on the back side from the abdomen through the crotch. And the underpants type diaper 100 can have the same effects as the first example of the first embodiment.
The first sheet material may be used as the inner layer material 31. Further, the crotch part 13 on the back side may be composed only of the outer layer material 33, or may be constituted by the outer layer material 33 and the inner layer material 31. In this case, a plurality of outer layer materials 33 or inner layer materials 31 may be arranged in the height direction.

  In each of the embodiments described above, the inner layer material 31 is folded inward from the waist (see the folded portion of the inner layer material 31 shown in FIG. 2). Therefore, the inner layer material 31 is wider than the outer layer material 33. The sheet is used. In addition, by folding the inner layer material 31 inward, leakage of urine, absorbent polymer, and the like from the end of the absorbent main body 40 can be further prevented. Further, the folding may be performed by folding the outer layer material 33 instead of the inner layer material 31, or both the inner layer material 31 and the outer layer material 33 may be folded, and the end of the absorbent main body 40 may be folded with a separate sheet without folding. The part may be covered.

  Next, the 1st embodiment of preferable one Embodiment (1st Embodiment) of the manufacturing method of the underpants type diaper of this invention is described below with reference to FIG. 8 and FIG. The first embodiment of the manufacturing method is a preferable method for manufacturing the above-described pants-type diaper 10 (10A). 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.

  The manufacturing method of the pants-type diaper 10 includes a step of preparing a plurality of tape-shaped first sheet materials 1S by arranging them so as not to overlap each other in the width direction, and a plurality of first sheets. Maintaining the state in which the materials 1S are arranged, laminating and fixing the second sheet material 2S, and obtaining the exterior body, and the abdomen side portion 21 arranged on the wearer's belly side and the back side of the wearer The exterior body of the back side part 23 distribute | arranged is mutually overlap | superposed, The process of joining an exterior body at predetermined intervals, and the process of cut | disconnecting an exterior body in the width direction and isolate | separating into each underpants type diaper 10 are provided.

  Specifically, as shown in FIGS. 8 and 9, 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 the first sheet material 1S and the second sheet material 2 The elastic body continuous member 3S which becomes the elastic body 35 is supplied between the sheet material 2S. The first sheet material 1S and the second sheet material 2S are continuous members in the manufacturing process. The first sheet material 1 </ b> S forms the outer layer material 33, and the second sheet material 2 </ b> S forms 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. In the present specification, a sheet material that is a continuous member in the manufacturing process is used for the outer layer material 33 (or the inner layer material 31) that is arranged adjacent to the height direction of the exterior body in the pants-type wearing article. (Sheet material before slitting), including the slit tape-like sheet material, are all referred to as the first sheet material. Similarly, the second sheet material that is laminated with the first sheet material to form the exterior body is also referred to as a second sheet material, which is a continuous member in the manufacturing process.

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 obtain a tape-like sheet material 33T having a narrow width. A receiving roll 212 is disposed at a position facing the slit cutter 211 with the first sheet material 1S interposed therebetween. The outer layer material slit cutter 211 has a roll shape, and has a plurality of blades (not shown) along the circumferential direction of the cutter 211 in the axial direction of the cutter 211. The obtained tape-like sheet material 33T maintains the slit state of the first sheet material 1S, and is adjacent to the tape-like sheet material 33T and 33T without any gap therebetween, and the tape-like sheet materials 33T and 33T are in contact with each other. Is conveyed between the nip rolls 217 and 218 while being wound around the nip roll 217 without overlapping.
Alternatively, the first sheet material 1S may be cut with a slit cutter to obtain a plurality of tape-shaped sheet materials 33T, and then supplied directly between the nip rolls 217 and 218 without being wound around the nip roll 217.

  Also, as shown in FIGS. 8 and 9, a plurality of elastic body continuous members 3S are prepared in parallel, and the adhesive (FIG. (Not shown) is supplied between the nip rolls 217 and 218 together with the second sheet material 2S. Each elastic body continuous member 3S is supplied at a predetermined interval d1. 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 d1 is supplied between the nip rolls 217 and 218 in a state of being stretched 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. Each tape-shaped sheet material 33T may be supplied so that the elastic body continuous member 3S is positioned at a predetermined distance in one direction from the center in the width direction of the tape-shaped sheet material 33T.
Then, the second sheet material 2S, the elastic continuous member 3S, and the tape-like sheet material 33T are passed between the nip rolls 217 and 218, and the second is obtained by the hot melt adhesive applied 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 body continuous member 3 </ b> S of the portion to which the absorbent main body 40 of the exterior body continuous member 11 </ b> S is attached is not expressed. The elastic body cutting step is performed before the absorbent main body 40 is disposed at a predetermined position between the abdominal side portion 21 and the back side portion 23 of the exterior body continuous member 11S. 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 11 </ b> S is cut at the center in the width direction so as to form the abdomen side portion 21 of the exterior body and the back side portion 23 of the exterior body using the exterior body slit cutter 221. A receiving roll 222 is disposed at a position facing the slit cutter 221 with the exterior body continuous member 11S interposed therebetween. And the space | interval of the cut | disconnected exterior body 21 and the back side part 23 is expanded to a predetermined space | interval. As the means for widening, it is preferable to use, for example, widening rolls 223 and 224 and widening rolls 225 and 226 arranged above and below the stomach side portion 21 and the back side portion 23 of the exterior body. The widened rolls 223 to 226 separate the cut exterior body continuous members 11S at a predetermined interval. The said widening means is not limited to the said widening rolls 223-226, What kind of means may be used if it expands the space | interval of the abdominal side part 21 and the back | dorsal side part 23 of an exterior body.
And the abdominal side part 21 and the back side part 23 of the separated exterior body are guided so as to be parallel to each other. As the means for guiding in parallel, a parallelizing guide roll (not shown) is preferably used. This parallelization guide roll is comprised from the roll distribute | arranged to each of the upper and lower sides of the belly side part 21 and the back side part 23 of an exterior body, for example. The means for guiding in parallel is not limited to the above-described guide roll, and any means may be used as long as the distance between the ventral side portion 21 and the back side portion 23 of the exterior body is parallel.
The dimensions of the pants-type diaper 10 including the predetermined interval are appropriately selected according to the size and application. In addition, you may perform the elastic body cutting process mentioned above after cut | disconnecting the exterior body continuous member 11S in the center part of the width direction, or simultaneously with a cutting | disconnection.

  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. Since the folded portion of the exterior body continuous member 11S (the folded portion of the inner layer material 31 shown in FIG. 2) is formed of the second sheet material 2S (inner layer material 31), the second sheet material 2S is the first sheet material. A sheet having a width wider than 1S (outer layer material 33) is used.

  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. Subsequently, a side seal process is performed in which the ventral side portion 21 and the back side portion 23 are joined at a predetermined interval to form the side seal portion 25. The joining is performed in the width direction of the exterior body continuous member 11S and the exterior body continuous member 11S. 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 pant-type diaper continuous body 10S formed by combining the abdominal side portion 21 and the back-side portion 23 of the exterior body is cut in the width direction and separated into individual pant-type diapers 10 (10A). As a result, the pant-type diaper 10 (10A) is completed, and the configuration described in the first example of the pant-type diaper can be obtained. The pants-type diaper continuum 10S is cut at a joint obtained by performing side sealing. Specifically, two side seal portions are formed in the width direction of the exterior body continuous member 11S at one joint portion, and cutting is performed between the two side seal portions.

  In the first embodiment of the manufacturing method described above, the plurality of tape-shaped sheet materials 33T formed by slitting the first sheet material 1S are maintained in the slit state, and are not overlapped with each other and spaced in the width direction. By laminating with the 2nd sheet material 2S in the state where it was arranged without opening, exterior body 11 which consists of inner layer material 31 and outer layer material 33 is obtained. The first sheet material 1S may be used by arranging a plurality of tape-shaped sheet materials 33T prepared in advance in a desired width without slitting the first sheet material 1S. Without using the exterior body slit cutter 221, the exterior body continuous member 11 </ b> S for the abdominal side and the exterior body continuous member 11 </ b> S for the back side may be separately manufactured in parallel.

By the manufacturing method of the pants-type wearing article of the present invention, the outer layer material 33 is maintained while maintaining the same stretchability as the conventional pants-type wearing article and maintaining the suitability to the wearer's body and the movement of the body. The amount of wrinkles increases due to the slitting action, the waist area is softened, the air permeability of the area can be increased, and the stuffiness can be reduced. Furthermore, since the exterior body 11 has a two-layer structure of the inner layer material 31 and the outer layer material 33 and is adjacent to each other, it is easy to manufacture a pants-type wearing article that is difficult to see through and can improve the skin concealment. can do.
Thereby, since air permeability is improved, the pants-type diaper 10 (10A) excellent in skin concealability can be provided by reducing stuffiness.

  Next, a second embodiment of the manufacturing method of the present invention will be described below with reference to FIG. A 2nd embodiment is one method of manufacturing the above-mentioned underpants type diaper 10 (10B).

As shown in FIG. 10, the manufacturing method of the second embodiment is the same as the manufacturing method of the first embodiment described above, in which the seal roll 231 is interposed between the nip rolls 217 and 218 and the cut roll 219 and the receiving roll 220. In a state where the first sheet material 1S (tape-shaped sheet material 33T), the elastic body continuous member 3S (elastic body 35), and the second sheet material 2S (inner layer material 31) are stacked, the seal roll 231 is disposed. A sealing process is performed. A receiving roll 232 is disposed at a position facing the seal roll 231 with the exterior body continuous member 11S interposed therebetween. Seal portions 37 are formed on both sides of the tape-shaped sheet material 33T in the width direction by the seal roll 231 to fix the tape-shaped sheet material 33T to the second sheet material 2S. For forming the seal portion 37, it is preferable to use emboss bonding. By adopting emboss bonding, the texture of the sheet material is not impaired by the curing of the adhesive and the like, and a good touch can be maintained.
The elastic continuous member 3S is located between the tape-like sheet material 33T and the second sheet material 2S and between the seal portions 37 and 37 (not shown in FIG. 10, see FIG. 4 (3)). And it is fixed to the tape-like sheet material 33T and the second sheet material 2S intermittently by an adhesive in the step before the emboss bonding. Therefore, the elastic continuous member 3S is largely free from the tape-like sheet material 33T and the second sheet material 2S. Thereby, the air permeability in the width direction of the tape-shaped sheet material 33T (outer layer material 33) can be improved.
The adhesive is preferably applied to the second sheet material 2S and the tape-shaped sheet material 33T. In the drawing, the case where coating is performed on both the second sheet material 2S and the tape-like sheet material 33T is shown, but when the elastic body continuous member 3S is thin and the adhesive can wrap around the elastic body continuous member 3S, whichever You may apply to either. The adhesive can also be applied to the elastic continuous member 3S. In that case, it is preferable that the application position to the elastic body continuous member 3S is performed immediately before the joining of the second sheet material 2S and the tape-shaped sheet material 33T.

Further, in the sealing step, the elastic body continuous member 3S in the stretched state is sandwiched between the tape-like sheet material 33T and the second sheet material 2S in a non-woven fabric portion in two layers. ))), When the elastic continuous member 3S (elastic body 35) is contracted, a ridge (not shown) can be formed by the tape-like sheet material 33T (outer layer material 33). That is, the tape-like sheet material 33T while being intermittently fixed by contracting the elastic body made of the elastic continuous member 3S rises outward (non-skin contact surface side). As a result, the wrinkles are formed.
In this way, an exterior body continuous member 11S that becomes the exterior body 11 is obtained.

  Next, the process after the elastic body cutting process using the cut roll 219 described in the first embodiment is sequentially performed to complete the pant-type diaper 10 (10B) (for example, see FIG. 4). In this embodiment, the elastic body cutting step cuts the elastic body 35 at one position in the center of the region where the absorber is disposed. Alternatively, since the elastic body cutting step is not essential, the elastic body 35 may not be cut.

In the second embodiment of the manufacturing method of the present invention, the same effect as in the first embodiment described above can be obtained, and the air permeability of the region where the tape-like sheet material 33T (outer layer material 33) is formed is improved. be able to. Further, it is possible to form a ridge in the width direction of the outer layer material 33 simultaneously with fixing the tape-like sheet material 33T. This can give a decorative aesthetic.
Further, in the fixation between the elastic body continuous member and the first sheet material 1S or the second sheet material 2S, and in the fixation between the first sheet material 1S and the second sheet material 2S, there are many in comparison with the first embodiment. Adhesive is not required, and environmental burden can be reduced, and cost is reduced.

  Next, a third embodiment of the manufacturing method of the present invention will be described below with reference to FIG. A 3rd embodiment is one method of manufacturing the above-mentioned underpants type diaper 10 (10C).

  As shown in FIG. 11, the first sheet material 1S is supplied from the upper side, and the second sheet material 2S is supplied from the lower side. The first sheet material 1S forms the outer layer material 33, and itself has elasticity in the longitudinal direction (waist circumference direction). As an example, it has a fiber layer on the surface of an elastic sheet. Therefore, unlike the above-described first embodiment, the elastic body 35 is not used. The second sheet material 2 </ b> S forms the inner layer material 31.

  First, with the uneven roll 241, a tooth gap process as a stretching process is performed on the entire surface of the first sheet material 1 </ b> S. As a result, a groove 34 (not shown in FIG. 11, see FIG. 5 (3)) is attached in the width direction of the first sheet material 1S. By this tooth gap processing, the first sheet material 1S is made stretchable by imparting extensibility to the fiber layer without inhibiting the stretchability of the stretchable sheet in the longitudinal direction of the first sheet material 1S. The interval between the grooves 34 depends on the thickness of the nonwoven fabric of the first sheet material 1S, but for example, is an interval according to the above-described pants-type diaper 10C. Further, an uneven roll 242 that meshes with the roll 241 is disposed at a position facing the uneven roll 241.

  Next, the outer sheet material slit cutter 211 described in the first embodiment described above is used to divide the first sheet material 1S subjected to the above-mentioned tooth gap processing into a plurality of pieces to obtain a tape-shaped sheet material 33T. Then, the first sheet material 1S is conveyed between the nip rolls 217 and 218 in a state where the first sheet material 1S is wound around the nip roll 217 with no gap between the tape-like sheet materials 33T and 33T and without overlapping. The In addition, after dividing the 1st sheet material 1S into multiple pieces with the outer-layer material slit cutter 211, you may give the above-mentioned tooth gap process.

  On the other hand, the second sheet material 2S is supplied in a state where an adhesive (not shown) supplied by the adhesive coating device 215 is attached. The adhesive is preferably supplied to substantially the center of the position where each of the tape-like sheet materials 33T is bonded in the next step, and the supply method may be continuous or intermittent.

In this manner, the tape-shaped sheet material 33T is supplied between the nip rolls 217 and 218 at a predetermined interval on the second sheet material 2S. Then, by passing the second sheet material 2S and the tape-shaped sheet material 33T between the nip rolls 217 and 218, the second sheet material 2S and the tape-shaped material are adhered to the second sheet material 2S by the pressure between the rolls. The sheet material 33T is bonded.
As a result, an exterior body continuous member 11S to be the exterior body 11 is obtained.

  Next, the steps after the exterior body cutting step using the exterior body slit cutter 221 described in the first embodiment of the manufacturing method of the present invention are sequentially performed, and the pants-type diaper 10 (10C) (for example, FIG. Complete 5).

  In the third embodiment of the manufacturing method of the present invention, 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.

  Next, a fourth embodiment of the manufacturing method of the present invention will be described below with reference to FIG. A 4th embodiment is one method of manufacturing the above-mentioned underpants type diaper 10 (10D).

  In the fourth embodiment, the second sheet material 2S that becomes the inner layer material 31 and the tape-like sheet material 33T that becomes the outer layer material 33 (the first sheet material 1S) by the nip rolls 217 and 218 in the first embodiment described above. ) Are bonded through the elastic body continuous member 3S and the elastic body cutting process by the cut roll 219 is performed in the tooth gap process as an extending process. Except for performing the tooth gap process, it is the same as the first embodiment described above. In the tooth gap process, the teeth of the concavo-convex roll 241 are pressed against the tape-like sheet material 33T and the inner layer material 31, for example, to extend into the fiber layer without hindering the extensibility of the elongated sheet constituting the outer layer material 33. This is a process of imparting sex. As a result, for example, grooves 34 (not shown in FIG. 12, refer to FIG. 6) are provided at intervals in the tape-like sheet material 33T. The interval between the grooves 34 is preferably the same as, for example, the groove of the above-described pants-type diaper 10C. An uneven roll 242 that meshes with the roll 241 is disposed at a position facing the uneven roll 241.

  First, in the same manner as in the first embodiment described above, a tape-like sheet material obtained by slitting the first sheet material 1S (outer layer material 33) into a plurality of pieces by the slit cutter 211 on the second sheet material 2S (inner layer material 31). 33T is bonded while maintaining the slit state without opening the interval in the width direction and without overlapping the tape-like sheet materials 33T and 33T. This tape-shaped sheet material 33T is a non-stretchable nonwoven fabric as an example. Subsequently, the concave-convex roll 241 performs tooth gap processing as stretching processing on the tape-like sheet material 33T and the inner layer material 31 bonded together with the elastic body continuous member 3S interposed therebetween. Thereby, in the tape-like sheet material 33T and the inner layer material 31, extensibility is expressed in the longitudinal direction so as not to hinder the stretchability of the elastic body continuous member 3S (elastic body 35). In addition, there is no influence on the stretchability of the elastic body continuous member 3S by tooth gap processing. As a result of performing this tooth groove processing, the surface of the tape-shaped sheet material 33T is provided with irregularities (the recesses are grooves 34) in the width direction. The interval between the grooves 34 depends on the thickness of the nonwoven fabric of the first sheet material 1S, but for example, is an interval according to the above-described pants-type diaper 10C. In addition, if the said extending | stretching process is a method which makes the tape-shaped sheet material 33T and the inner-layer material 31 extendable, a processing method will not be limited to a tooth gap process.

  In the above-described fourth embodiment, the same effect as in the above-described first embodiment can be obtained. At the same time, the tape-like sheet material 33T (outer layer material 33) and the inner layer material 31 exhibit extensibility, so that the pants-type diaper exterior body 11 (see FIG. 6) is given stretchability in the waist circumference direction. Can do. Moreover, it becomes easy to form a wrinkle by forming the groove | channel 34 in the tape-shaped sheet material 33T.

  Next, a fifth embodiment of the manufacturing method will be described below with reference to FIG. A 5th embodiment is another manufacturing method which manufactures the above-mentioned underpants type diaper 10 (10A).

As shown in FIG. 13, in the fifth embodiment, the first sheet material 1 </ b> S, the first sheet material 1 </ b> SA that forms the ventral side portion 21 of the exterior body 11, and the first side portion that forms the back side portion 23 in advance. The sheet material 1SB is supplied separately. Similarly, the second sheet material 2 </ b> S is supplied in a state of being divided into a second sheet material 2 </ b> SA that forms the ventral side portion 21 and a second sheet material 2 </ b> SB that forms the back side portion 23. That is, the first sheet materials 1SA and 1SB and the second sheet materials 2SA and 2SB corresponding to the widths of the abdominal portion and the back portion are used. Then, the first sheet materials 1SA and S1B are respectively divided into a plurality of pieces by outer layer material slit cutters 211A and 211B to obtain tape-like sheet materials 33T (33TA) and 33T (33TB). The slits of the first sheet materials 1SA and 1SB are maintained without gaps between the tape-like sheet materials 33T and 33T and without overlapping the tape-like sheet materials 33T and 33T. Wound and conveyed between the nip rolls 217 and 218 in this state.
Subsequent processes are the same as those in the first embodiment described above, except that the cutting process of the exterior body continuous member 11S using the exterior body slit cutter is not performed.

Alternatively, as shown in FIG. 14, the first sheet material 1S is divided into the first sheet materials 1SA and 1SB by dividing the second sheet material 2S into the second sheet materials 2SA and 2SB by the slit cutter 216A. The slit cutter 216B may be used. In this case, after slitting, the interval between the first sheet material 1SA and the first sheet material 1SB is widened to a predetermined interval by a widening means (not shown), and the predetermined interval is provided by another widening means (not shown). The distance between the second sheet material 2SA and the second sheet material 2SB is increased. As each of the widening means, a widening roll can be used. Although not shown, it is preferable to provide means for making the conveyance direction of the widened sheet parallel. There is a parallel guide roll as means for making the sheet conveying direction parallel.
Then, as described above, the first sheet materials 1SA and S1B are each divided into a plurality of pieces by the outer layer material slit cutters 211A and 211B to obtain tape-like sheet materials 33T (33TA) and 33T (33TB). Subsequently, the first sheet material 1S and the second sheet material 2S are fed between the nip rolls 217 and 218 so that the elastic continuous member 3S is sandwiched between the first sheet material 1S and the second sheet material 2S. Thereafter, the same steps as in the first embodiment are performed. Thus, the exterior body 11 composed of the first sheet material 1S and the second sheet material 2S sandwiching the elastic continuous member 3S is manufactured by being divided into the ventral side portion 21 and the back side portion 23. Therefore, the process of slitting the exterior body 11 is not performed as in the first embodiment.

  In the fifth embodiment, the same effect as in the first embodiment described above can be obtained. Also, the first sheet material 1S having the predetermined width is supplied from the beginning without slitting the first sheet material 1S in advance, and the second sheet material 2S is similarly slit without slitting the second sheet material 2S from the beginning. When supplying 2 sheet material 2SA and 2SB, it is not necessary to install an exterior body slit cutter. Therefore, manufacturing equipment can be reduced and manufacturing cost can be reduced.

  As in the fifth embodiment of the manufacturing method, the method of supplying the first sheet material 1SA and the first sheet material 1SB separately is applied to the second to fourth embodiments described above. can do. In any case, the subsequent steps are the same as those in the second to fourth embodiments, respectively, except that the cutting process of the exterior body continuous member 11S using the exterior body slit cutter is not performed.

  Next, a preferred embodiment (second embodiment) of the method for producing a pant-type diaper according to the present invention will be described below with reference to FIG. 2nd Embodiment is an example which applied the manufacturing method of this invention to the manufacturing method of the underpants type diaper which has the conventional leg hole, and is the method of manufacturing the above-mentioned underpants type diaper 100. FIG.

  As shown in FIG. 15, the first sheet material 1S (1SA, 1SB) is supplied from the upper side, the second sheet material 2S is supplied from the lower side, and each of the first sheet materials 1SA, 1SB and the second sheet are supplied. The elastic body continuous member 3S to be the elastic body 35 is supplied simultaneously with the material 2S. The first sheet material 1SA forms the ventral outer layer material 33, the first sheet material 1SB forms the back outer layer material 33, and the second sheet material 2S forms the inner layer material 31. Is. As shown in FIG. 15, in the second embodiment, the first sheet material 1SA and the first sheet material 1SB are supplied to the single second sheet material 2S in a state of being separated in the width direction. 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) have been described in the first embodiment of the pant-type diaper described above. Use the same material as

  First, each of the first sheet materials 1SA and 1SB is divided into a plurality of pieces by the outer layer material slit cutter 211 to form tape-like sheet materials 33TA and 33TB. A receiving roll 212 is disposed at a position facing the slit cutter 211 with the first sheet material 1SA and 1SB interposed therebetween. Next, each of the first sheet materials 1SA and 1SB has a slit state without gaps between the tape-like sheet materials 33T and 33T obtained by slitting and without overlapping the tape-like sheet materials 33T and 33T. The nip rolls 217 and 218 are conveyed while being maintained. The tape-like sheet material 33T (the divided first sheet material 1S) is manufactured to have the same width as the outer layer material 33 of the pant-type diaper 10A described above.

  Also, a plurality of elastic body continuous members 3S are prepared in parallel, and are supplied in a state where they are extended and between the second sheet material 2S and the respective tape-like sheet materials 33T. At this time, it is preferable to supply the tape-shaped sheet material 33T and the elastic body continuous member 3S so that the center in the width direction of the elastic body continuous member 3S coincides with the center in the width direction of the tape-shaped sheet material 33T. At that time, the second sheet material 2S and the tape-shaped sheet material 33T are bonded to the adhesive (not shown) by an adhesive coating device (not shown) in the same manner as described in the first embodiment. ) Is applied. For example, a hot melt gun is used for the adhesive coating apparatus (not shown), and a hot melt adhesive is used for the adhesive in this case.

  In this way, the second sheet materials 2SA and 2SB, the elastic body continuous member 3S, and the tape-shaped sheet materials 33TA and 33TB are passed between the nip rolls 217 and 218. And the exterior body which becomes the exterior body 11 by adhere | attaching the 2nd sheet | seat material 2S and the tape-shaped sheet | seat material 33T through the elastic body continuous member 3S with the hot-melt-adhesive agent apply | coated by the pressure between rolls. A continuous member 11S is obtained.

  Thereafter, the elastic body continuous member 3 </ b> S is conveyed between the cut roll 219 and the receiving roll 220. And the elastic body cutting process which does not express the elastic function of the elastic body continuous member 3S in the area | region where the absorptive main body 40 is attached by a subsequent process with the cut roll 219 is performed. This cutting method is the same as that described in the first embodiment.

  Next, in the same manner as in the first embodiment described above, the absorbent main body 40 obtained by cutting the absorbent main body continuous body 40S supplied from the absorbent main body forming portion 4 is used as the ventral side of the exterior body continuous member 11S. It arrange | positions in the predetermined position of the part 21 and the back side part 23. FIG. Subsequently, both ends in the width direction of the exterior body continuous member 11S are 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 portions.

  Next, leg holes 110 are opened in both side portions of the absorbent main body 40 fixed to the exterior body continuous member 11S.

  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. The pants-type diaper 100 is completed by performing the steps after the side sealing step of joining the abdominal side portion 21 and the back side portion 23 in the width direction at a predetermined interval.

  In the manufacturing method of the second embodiment described above, as in the first embodiment described above, the same stretchability as that of the conventional pant-type wearing article is maintained, and the fit to the wearer's body and the movement of the body are prevented. While maintaining the mobility, the amount of the heel is increased by the action of slitting the outer layer material 33, the waist area is softened, the air permeability of the area can be increased, and the stuffiness can be reduced. Furthermore, since the exterior body 11 has a two-layer structure of the inner layer material 31 and the outer layer material 33 and is adjacent to the outer layer material 11, it is possible to provide a pant-type diaper 100 that is less likely to see through the skin and can improve skin concealment. Can do.

As described above, according to the pants-type wearing article of the present invention, a plurality of outer layer materials 33 are arranged in the height direction, and the outer layer materials are arranged so as not to overlap with each other. The outer layer material 33 of 10,100 can increase the amount of wrinkles to soften the waist area, improve the air permeability of the same area, and reduce stuffiness. Furthermore, since the exterior body 11 has a two-layer structure of the inner layer material 31 and the outer layer material 32 and is adjacent thereto, the skin becomes difficult to see through, and the skin concealability can be improved.
Further, according to the method for producing a pants-type wearing article of the present invention, it is possible to easily produce a pants-type wearing article having improved stretchability, adaptability to the body, breathability, skin concealment, and the like. it can.

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. Moreover, the disposable underwear which does not comprise an absorptive main body may be sufficient.

  The following additional notes (pants-type wearing article, manufacturing method of pants-type wearing article) are disclosed with respect to the above-described embodiments and embodiments.

<1> It has an abdominal side part arranged on the abdomen side of the wearer, a crotch part arranged on the crotch part, and a back side part arranged on the back side. A pants-type wearing article that is formed into a pants shape by joining the side edges of the side portions,
The ventral side portion and the back side portion are composed of an exterior body in which a first sheet material and a second sheet material are laminated,
A plurality of the first sheet materials are arranged in the height direction of the exterior body, the plurality of first sheet materials are arranged so as not to overlap each other, and
The exterior body is a pants-type wearing article having elasticity in the waist circumference direction.
<2> The laminated region includes an elastic body between the first sheet material and the second sheet material, or both or one of the first sheet material and the second sheet material is stretchable. The underpants type wearing article as described in said <1> currently formed with the material which has this.
<3> The pants-type wearing article according to <2>, wherein the first sheet material is bonded to the second sheet material with an adhesive via the elastic body.
<4> The elastic body is in an extended state, and both ends thereof are fixed to the first sheet material and the second sheet material by an adhesive, and a plurality of the first sheet material and the second sheet material are formed in two layers. <2> or <2> in which a ridge is formed on each of the first sheet material and the second sheet material between the seal portions adjacent to each other in the width direction of the pants-type wearing article. Pants type wearing article according to 3>.
<5> The pants-type wearing article according to any one of the above <2> to <4>, wherein both or one of the first sheet material and the second sheet material is stretched.
<6> Any one of the items <2> to <5>, wherein the first sheet material itself has elasticity in a waist circumference direction, and the first sheet material is attached to the second sheet material in an expanded state. The pants-type wearing article according to 1.
<7> The pants-type wearing article according to <6>, wherein the elastic body is sandwiched between the first sheet material and the second sheet material.
<8> The first sheet material and the second sheet material fixed through an elastic body are stretched in the waist direction, and the elastic body is stretched in the first sheet material and the second sheet. The underpants-type wearing article according to any one of <2> to <7>, which is fixed to a sheet material.
<9> The first sheet material is fixed to the second sheet material at a part in the width direction thereof, and a frill is formed at an edge of the first sheet material which is a free end. The underpants type wearing article of any one of-<8>.
<10> The pants-type wearing article according to <9>, wherein the first sheet material is fixed to the second sheet material at a central portion in a width direction thereof.
<11> The pants-type wearing article according to any one of <1> to <10>, wherein the exterior body is stretched.
<12> The first sheet material is fixed to the second sheet material at a central portion in the width direction thereof, and the frill is formed at an edge of the first sheet material which is a free end. The underpants type wearing article of any one of-<11>.
<13> The pants-type wearing article according to any one of <1> to <12>, wherein the first sheet material is an outer layer material constituting an exterior body.
<14> The pants-type wearing article according to any one of <1> to <12>, wherein the first sheet material is an inner layer material constituting an exterior body.
<15> The width | variety of a said 1st sheet | seat material is 1 mm or more, 3 mm or more is preferable, and 5 mm or more is more preferable The underpants type wearing article of any one of said <1>-<14>.
<16> The width | variety of a said 1st sheet | seat material is 60 mm or less, 40 mm or less is preferable, and 30 mm or less is more preferable, The underpants type wearing article of any one of said <1>-<15>.
<17> The width of the first sheet material is 1 mm to 60 mm, preferably 3 mm to 40 mm, more preferably 5 mm to 30 mm, and the underpants-type wearing article according to any one of <1> to <16>. .
<18> The <2> to <17>, wherein the second sheet material is an inner layer material constituting the exterior body, and the outer layer material is fixed to the inner layer material at a central portion in a width direction thereof. The pants-type wearing article according to 1.
<19> The pant-type wearing article is a pant-type diaper, and includes the exterior body that forms the abdomen and the back side, and the absorbent main body that forms the crotch part <1>. The underpants type wearing article given in any 1 of <18>.
<20> The pants-type wearing article according to any one of <1> to <19>, in which the exterior body is also disposed on the crotch part.
<21> The pants-type wearing article according to any one of <1> to <20>, wherein an absorbent main body is disposed on a skin contact surface side of the exterior body.

<22> A method for producing a pants-type wearing article,
A step of arranging a plurality of tape-shaped first sheet materials so as to be adjacent to each other without overlapping each other in the width direction; and
Maintaining the arrayed state of the plurality of first sheet materials, laminating and fixing the second sheet material, and obtaining an exterior body; and
A step of superimposing the exterior body of the abdominal side portion arranged on the abdomen side of the wearer and the back side portion disposed on the back side of the wearer, and joining the exterior body at a predetermined interval;
Cutting the exterior body in the width direction and separating it into individual pants-type wearing articles;
A method for manufacturing a pants-type wearing article.

<23> In the step of preparing the tape-shaped first sheet material, the pants-type wearing article according to <22>, wherein the first sheet material is formed by slitting the sheet material in the width direction. Method.
<24> The method for producing a pants-type wearing article according to <22> or <23>, wherein in the joining step, the second sheet materials are opposed to each other and two sets of the exterior bodies are overlapped with each other.
<25> The method for producing a pants-type wearing article according to any one of <22> to <24>, wherein the elastic member is interposed between the first sheet material and the second sheet material.
<26> With the elastic body interposed between the first sheet material and the second sheet material, the first sheet material and the second sheet material in a region where the elastic body does not exist. The manufacturing method of the underpants type wearing article of any one of said <22>-<24> which carries out emboss joining.
<27> The elastic body is prepared by preparing a plurality of elastic body continuous members, each being stretched, and supplied with the adhesive supplied by the adhesive coating device. <25> or the manufacturing method of the underpants type wearing article as described in <26>.
<28> The above-mentioned <22> to supplying the first sheet material on the ventral side portion and the first sheet material on the back side portion to one second sheet material in a state of being separated in the width direction. The manufacturing method of the underpants type wearing article of any one of <27>.
<29> Before laminating the first sheet material and the second sheet material, either or both of the first sheet material and the second sheet material, or the first sheet material and the second sheet material. The manufacturing method of the underpants type wearing article of any one of said <22>-<28> which performs an extending | stretching process after making a sheet | seat material into a lamination | stacking state.
<30> The pant-type wearing article includes an absorbent main body, and the absorbent main body is disposed at a predetermined position of the exterior body. The production of the pant-type wearing article according to any one of the above <22> to <29> Method.
<31> The above-described <30, further comprising an elastic body cutting step that prevents the elastic function of the elastic body from being exhibited in a portion to which the absorbent main body is attached before the absorbent main body is disposed at a predetermined position of the exterior body. > The manufacturing method of the underpants type wearing article as described in>.

10 Pants-type wearing articles (pants-type diapers)
DESCRIPTION OF SYMBOLS 11 Exterior body 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 1S 1st sheet material 2S 2nd sheet material 33T Tape-like sheet material

Claims (10)

The abdomen side part arranged on the abdomen side of the wearer, the crotch part arranged in the crotch part, and the back side part arranged on the back side, the side edge part of the abdomen side part and the back side part A pants-type wearing article joined to the side edge,
The ventral portion and the dorsal side portion are composed of an exterior body in which a first sheet material and a second sheet material are laminated,
A plurality of the first sheet materials are arranged in the height direction of the exterior body, the plurality of first sheet materials are arranged without overlapping each other and without having a gap in a state where the pant-type wearing article is developed ,
The exterior body is a pants-type wearing article having elasticity in the waist circumference direction. The laminated region in which the first sheet material and the second sheet material are laminated includes an elastic body between the first sheet material and the second sheet material, or the first sheet material and the first sheet material The pants-type wearing article according to claim 1, wherein both or one of the two sheet materials is formed of a stretchable material. Wherein the first sheet material is fixed to the second sheet material at some in the width direction, claim ruffled edges of the first sheet material a free end is formed 1 or claim 2 The article for wearing underpants type.   The pants-type wearing article according to any one of claims 1 to 3, wherein the first sheet material is an outer layer material constituting an exterior body.   The pants-type wearing article is a pants-type diaper, and is constituted by the exterior body that forms the abdomen and the back and the absorbent main body that forms the crotch. The underpants type wearing article of any one of these. A method for manufacturing a pants-type wearing article,
A step of preparing a plurality of tape-shaped first sheet materials by arranging them so as to be adjacent to each other in the width direction and without being spaced apart from each other;
Maintaining the arrayed state of the plurality of first sheet materials, laminating and fixing the second sheet material, and obtaining an exterior body; and
A step of superimposing the exterior body of the abdominal side portion arranged on the abdomen side of the wearer and the back side portion disposed on the back side of the wearer, and joining the exterior body at a predetermined interval;
Cutting the exterior body in the width direction and separating it into individual pants-type wearing articles;
A method for manufacturing a pants-type wearing article. The method for producing a pants-type wearing article according to claim 6, wherein in the step of preparing the tape-shaped first sheet material, the first sheet material is formed by slitting the sheet material into a plurality in the width direction. Wherein in the bonding to step method pants-type wearing article according to claim 6 or claim 7 superposed to each other two pairs of said outer body to face the second sheet material between the inner side. The method for manufacturing a pants-type wearing article according to any one of claims 6 to 8, wherein an elastic body is interposed between the first sheet material and the second sheet material. With the elastic body interposed between the first sheet material and the second sheet material, the first sheet material and the second sheet material in an area where the elastic body does not exist are embossed together. The manufacturing method of the underpants type wearing article of any one of Claim 6 thru | or 9.

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