TW201729776A - Disposable article and method for manufacturing disposable article - Google Patents

Abstract

The purpose of the present invention is to provide a disposable article that suppresses leakage and has a superior feeling of fit. A disposable article of the present invention is provided with: an absorbent (14) having an absorbent core (22) that absorbs a body fluid, a surface material (15) that covers the absorbent core (22), and a rear surface sheet (31) that covers the absorbent core (22) on the opposite side of the surface material (15); and an exterior body (11) that can be joined to the absorbent (14). The surface material (15) has a first sheet material having air permeability, and a first elastic member (5) that is joined to the first sheet material in a first direction so that the surface material (15) has elasticity in the first direction, and a first pleated section (60) is formed in which a plurality of recesses and projections alternately aligned in the first direction are formed in a plurality of rows in a direction orthogonal to the first direction, and the recesses and projections that form the first pleated section (60) are formed to allow shape deformation in response to a stretching force of the first elastic member. The exterior body has a second sheet material having air permeability, and a second elastic member that is joined to the second sheet material in a selected direction so that the exterior body has elasticity in the selected direction which is selected from among the first direction and a second direction different from the first direction, and a second pleated section is formed in which a plurality of recesses and projections alternately aligned in the selected direction are formed in a plurality of rows in a direction orthogonal to the selected direction, and the recesses and projections that form the second pleated section are formed to allow shape deformation in response to a stretching force of the second elastic member joined to the second sheet material.

Description

Disposable articles and manufacturing methods of disposable articles

The present invention relates to a disposable underwear, a disposable diaper, and the like, and a method of manufacturing the disposable article.

For disposable items, various proposals have been made for disposable fiber products. For example, as a disposable fiber product, there is proposed a configuration in which a plurality of elastic members are disposed between two sheets which are partially followed by a predetermined pattern so as to avoid the succeeding portion, and the elastic member is used in the sheet rule. A plurality of pleats are formed in the ground (see Patent Document 1). The disposable fibrous product is, for example, an article which can be used for a waist circumference of a disposable diaper or the like.

Prior technical literature

Patent literature

Patent Document 1: Japanese Patent Laid-Open Publication No. 2005-80859

In the case where the disposable fiber product is a disposable diaper, in order to suppress leakage of urine, it is considered to use a disposable fiber in a state of being firmly fastened and closely attached to the user's body. Product. However, if the disposable fiber product is tightly fastened, it can suppress the leakage of urine, but it causes a local load on the user's body, and the wearing feeling is not good.

Accordingly, an object of the present invention is to provide a disposable article and a method for producing a disposable article which are excellent in the feeling of wearing and which are excellent in the feeling of wearing.

A first aspect of the present invention is mainly a disposable article comprising: an absorbent body having an absorbent core absorbing body fluid, a surface material covering the absorbent core, and a cover opposite to the surface material a back sheet of the absorbent core; and an exterior body that can join the absorber; and the disposable article has a first sheet and a first elastic member, the first member In the first elastic member, the first elastic member is joined to the first sheet in the first direction so as to have elasticity in a first direction defined in a predetermined direction, and the first elastic member is formed on the surface material. The first pleat portion is formed by arranging a plurality of rows in a direction in which the plurality of concave portions and the convex portions alternately arranged in the first direction are arranged in a direction intersecting the first direction. The concave portion and the convex portion forming the first pleat portion are formed to be deformable in accordance with the elastic force of the first elastic member joined to the first sheet, and the outer casing has the second sheet and has Second elastic member, the second sheet The second elastic member is elastic in such a manner that the outer casing has elasticity in a direction selected from the first direction and the second direction defined in a predetermined direction different from the first direction. The second sheet is formed in the outer casing, and the second pleat portion is formed by a plurality of concave portions and convex portions alternately arranged in the selection direction. Crossing in the direction opposite to the above selection The plurality of rows are arranged in the direction of the fork, and the concave portion and the convex portion forming the second pleat portion are formed to be deformable in accordance with the expansion and contraction force of the second elastic member joined to the second sheet.

Further, a second aspect of the present invention is mainly a method for producing a disposable article comprising: an absorbent body having an absorbent core absorbing body fluid; and a first sheet covering the absorbent core; a surface material and a back sheet covering the absorbent core opposite to the surface material; and an exterior body having a second sheet that can join the absorber; and manufacturing of the disposable article The method includes the steps of: forming the surface material, the surface material having the first sheet and having elasticity in a first direction defined in a predetermined direction; forming the outer casing, wherein the outer casing includes the second In the case where the surface material is joined to the outer casing, the sheet is selected from the second direction and the first direction selected to be defined in a predetermined direction so as to be different from the first direction. In the step of forming the surface material, the first elastic member is stretched in the first sheet, and the first elastic member is joined in the first direction, and the first elastic member is released. In the stretched state of the member, the first sheet is loaded with the restoring force of the first elastic member, and the first uneven line formed by the concave portion and the convex portion alternately arranged in the first direction intersects with the first direction Forming a plurality of rows in the direction, thereby forming the first pleats in the first sheet, and in the step of forming the outer casing, the second elastic member is stretched in the second sheet, and along the above The second elastic member is joined in the selected direction, and the stretched state of the second elastic member is released, and the second sheet is loaded with the restoring force of the second elastic member to be alternately arranged in the selection direction. The second uneven line formed by the convex portion forms a plurality of rows in a direction intersecting the selection direction, whereby the second pleat is formed in the second sheet.

According to the present invention, it is possible to obtain a disposable article which suppresses leakage and which is excellent in the feeling of wearing and a method for producing the same.

1‧‧‧ cloth

2‧‧‧1st fiber sheet

3‧‧‧2nd fiber sheet

4‧‧‧3rd fiber sheet

5‧‧‧Flexible components

6‧‧‧ bump line

10‧‧‧Disposable shorts

14‧‧‧Acceptor

15‧‧‧Surface

21‧‧‧pleas

28‧‧‧Mouth Department

31‧‧‧ Back sheet

60‧‧‧ pleats

Fig. 1 is a schematic plan view showing a fabric for use in a disposable fiber product which can be used in an embodiment of the present invention.

Fig. 2 is a schematic perspective view of the cloth shown in Fig. 1.

Fig. 3 is a schematic enlarged view of the cloth shown in Fig. 1.

Fig. 4 is a schematic cross-sectional view taken along line A-A of Fig. 3;

Fig. 5 is a schematic cross-sectional view taken along line B-B of Fig. 3;

Fig. 6 is a view schematically showing a space formed between the second fiber sheet and the third fiber sheet.

Fig. 7 is a schematic plan view schematically showing an outer casing of a disposable shorts which is an embodiment of a disposable fiber product according to an embodiment of the present invention.

Fig. 8 is a schematic plan view schematically showing a disposable shorts which is an embodiment of a disposable fiber product according to an embodiment of the present invention.

Fig. 9 is a schematic view for explaining the state of the shape of the disposable shorts in a state in which the disposable pants of one embodiment of the disposable fiber product of the embodiment of the present invention are worn.

Fig. 10 is a view showing a state in which a doll is worn as a disposable shorts of an embodiment of the disposable fiber product in an embodiment of the present invention.

Fig. 11 is a schematic plan view schematically showing an example of an absorbent body which can be applied to a disposable shorts which is an embodiment of the disposable fiber product according to the embodiment of the present invention.

Fig. 12 is a schematic bottom view showing an example of an absorbent body which can be applied to a disposable shorts which is an embodiment of a disposable fiber product according to an embodiment of the present invention.

Figure 13 is a schematic cross-sectional view for schematically explaining another example of a cloth which can be used to form a disposable fiber product according to an embodiment of the present invention, and schematically shows a schematic cross-sectional view taken along line BB of Figure 3 A diagram of the state of the profile.

(disposable items)

Embodiments of the disposable article of the present invention will be described using the drawings. The case where the disposable article which can be used as an example of the present invention is a disposable fiber product will be described as an example. Further, in the description of the disposable fiber product, the disposable shorts 10 are employed as an embodiment of the disposable fiber product.

(disposable fiber products)

The disposable shorts 10 as a disposable fiber product are configured to include an absorber 14 (see FIG. 11) and a detachable absorber 14 (see FIG. 7). The absorber 14 has a surface material 15 (see FIG. 8), a back sheet 31 (see FIG. 12), and an absorbent core 22 (see FIG. 11) interposed therebetween. In the absorbent body 14 illustrated in Fig. 11, one surface side of the absorbent core 22 is covered with the surface material 15, and the other surface side is covered by the back surface sheet 31, and the exposed surface side of the surface material 15 is used by the user at the time of use. The surface on which the skin surface faces the side, and the surface on which the back sheet 31 is placed is the side opposite to the skin side (the side facing away from the back). Furthermore, sometimes disposable shorts When the component is used, the side facing the skin surface of the user is referred to as the skin side, and the side opposite to the skin side is referred to as the non-skin side. In addition, in the case of a plan view of a structure such as the surface material 15 or the exterior body 11, it is a case where the structures are placed on a horizontal surface in an unused state, and the thickness direction is observed as a line of sight direction.

Further, examples of the liquid absorbed by the absorbent body 14 include body fluids such as urine, sweat, blood, and lymph fluid. In the following description, the case where urine is the absorbed liquid will be described as an example.

The surface material 15 or the exterior body 11 can be formed by processing the cloth 1 described below into an appropriate shape.

(cloth 1)

In Fig. 1, the cloth 1 is continuous in the longitudinal direction of the surface of the cloth 1. In the example of Fig. 1, the length direction of the cloth 1 is the X direction. The cloth 1 is formed of a laminated sheet 30 (see FIGS. 4 and 5), and the laminated sheet 30 is composed of a raw material sheet and an elastic structure composed of the elastic member 5 provided on the raw material sheet. In the cloth 1, an elastic member 5 is provided inside. In the cloth 1 illustrated in FIG. 1, the elastic member 5 is formed by providing a plurality of elastic bodies, and a plurality of elastic systems are disposed at intervals from each other across the longitudinal direction of the cloth 1, and each elastic member 5 is provided. The direction of elongation is set to match the length direction of the cloth. In the cloth 1, the concave portion and the convex portion are alternately formed along the longitudinal direction of the cloth 1 by the action of the restoring force of the plurality of elastic members 5, thereby forming an uneven surface. Further, the concave and convex lines formed by the concave portions and the convex portions alternately formed along the longitudinal direction of the cloth 1 are formed by arranging a plurality of rows in a direction intersecting the longitudinal direction of the cloth 1 (in the Y direction in the example of FIG. 1). The plurality of embossed rows form pleats. Further, at least a part of the adjacent uneven rows are formed with a gap therebetween, and the gap is formed at a position It is a position corresponding to the laying position of the elastic member 5.

When the shape of the cloth 1 is adjusted to form the surface material 15, the raw material sheet of the cloth 1 forms the first sheet of the surface material 15, and the elastic member 5 provided on the cloth 1 forms the first elastic layer provided on the surface material 15. The member, the laminated sheet 30 is formed in a structure in which the first elastic member is provided on the first sheet. Moreover, the first uneven line and the first pleat formed on the uneven line of the cloth 1 and the pleat forming surface material 15 are formed.

When the shape of the cloth 1 is adjusted to form the outer casing 11, the raw material sheet of the cloth 1 forms the second sheet of the outer casing 11, and the elastic member 5 provided on the cloth 1 is formed in the outer casing 11. The second elastic member and the laminated sheet 30 are formed on the second sheet in which the second elastic member is provided. Further, the second uneven line and the second pleated portion formed on the outer casing 11 are formed on the uneven line and the pleat portion of the cloth 1.

(elastic structure)

In the example of Fig. 1, the elastic structural system formed on the cloth 1 is formed of the elastic member 5.

(elastic member 5)

The elastic member 5 may be formed of one elastic body. For example, the elastic member 5 may also be formed of an elastic sheet. As the elastic sheet, an elastic sheet formed into a lattice shape, a stretchable film, or the like can also be used. As the stretchable film, an urethane film, an anthrone film, an elastomer film, or the like can be used. Further, the elastic member 5 may be composed of a plurality of elastic bodies. For example, as the elastic member 5, a linear elastic body 5a having elasticity as shown in Fig. 5 or the like can be preferably used, and as the linear elastic body 5a, a linear rubber can be preferably used. The cross-sectional shape of the elastic member 5 is not limited to a columnar shape, and may be a triangular column shape, a quadrangular column shape, a plurality of complex angular column shapes, or an elliptical column shape. Furthermore, in the example of FIG. 5, the outer shape of the linear elastic member 5a is a linear shape and a cylindrical shape, and the cross-sectional shape becomes a circle. shape.

The material of the elastic member 5 is preferably formed of urethane, fluorenone, butadiene, synthetic rubber using styrene-butadiene as a base material, natural rubber, or the like, but the elastic member 5 may be Any of these synthetic rubbers or natural rubbers are suitably combined.

Further, when the elastic member 5 is formed of the linear elastic member 5a, the linear elastic member 5a may be bundled or twisted with a plurality of linear members (not shown).

(Laminated sheet 30 and raw material sheet)

The cloth 1 is formed of a laminated sheet 30. In the example shown in Figs. 4 and 5, the laminated sheet 30 has a raw material sheet and an elastic member having elasticity. The raw material sheet has a first fibrous sheet 2 having gas permeability, a second fibrous sheet 3 having gas permeability, and a third fibrous sheet 4 having liquid diffusibility. In this example, the third fiber sheet 4 is interposed between the first fiber sheet 2 and the second fiber sheet 3. The third fiber sheet 4 is a sheet having a fiber layer having liquid diffusibility and has gas permeability. Moreover, the raw material sheet also has gas permeability.

When the shape of the cloth 1 is adjusted to form the surface material 15, the first fiber sheet 2 is located on the skin surface side of the surface material 15, and the second fiber sheet 3 is located on the non-skin side of the surface material 15, the second fiber. The surface of the sheet 3 becomes the surface in contact with the absorbent core.

When the shape of the cloth 1 is adjusted in order to form the exterior body 11, the first fiber sheet 2 is located on the skin surface side of the exterior body 11, and the second fiber sheet 3 is located on the non-skin surface side of the surface material 11.

(Number of layers and layer constitution of the raw material sheet forming the laminated sheet 30)

In the example shown in FIGS. 4 and 5, the raw material sheet forming the laminated sheet 30 is at least partially formed into three layers of the first fiber sheet 2, the second fiber sheet 3, and the third fiber sheet 4. Laminated structure The layer structure of the three layers forming the raw material sheet can be formed by replacing the second fiber sheet 3 with the third fiber sheet 4. The raw material sheet may be a laminated structure of two layers obtained by removing the second fibrous sheet 3, or may be a first fibrous sheet 2 and a second fibrous sheet 3 obtained by removing the third fibrous sheet 4. The layered structure of the 2 layers.

In the case where the cloth 1 is used as a material for forming the surface material 15 or the exterior body 11, it is preferable to use a sheet containing a cellulose-based component for the raw material sheet in terms of liquid diffusibility of the body fluid. A material such as paper or an air-laid nonwoven fabric is used as the third fiber sheet 4. In addition, it is preferable to use a hydrophilic non-woven fabric in the point that the first fibrous sheet 2 and the second fibrous sheet 3 have gas permeability in relation to a component such as sweat or the body fluid which is emitted by the body itself. Further, paper is preferably used as the third fiber sheet 4, and any of the heat-bonding nonwoven fabric, the spunlace nonwoven fabric, and the spunbonded nonwoven fabric is used as the first fiber sheet 2 and the second fiber sheet 3, respectively. Further, from the viewpoint of gas permeability, paper may be used as the first fiber sheet 2 and the second fiber sheet 3, but it is preferable to use the first fiber sheet 2 and the second fiber sheet 3 Either one is not woven. On the other hand, in the case where the first fiber sheet 2, the second fiber sheet 3, and the third fiber sheet 4 are formed of paper and used as the surface material 15, the cloth 1 is used. When the absorbent body 14 absorbs the body fluid, the surface material 15 is broken at the surface, which is not preferable.

(Joining of the raw material sheet forming the laminated sheet 30)

In the example of FIGS. 4 and 5, the first fiber sheet 2 and the third fiber sheet 4 forming the raw material sheet are partially joined by the elastic member 5.

In the example of Fig. 4 and Fig. 5, the second fiber sheet 3 and the third fiber sheet 4 which form the raw material sheet may be joined to each other in the opposing surface area, but it is preferable to partially join each other. By partially joining the second fiber sheet 3 and the third fiber sheet 4, it can be formed on the second fiber. The non-joining portion between the sheet 3 and the third fiber sheet 4 forms a space 9. Further, by forming such a space 9, the cloth 1 is made of a material which is more excellent in water vapor evaluability, heat dissipation property, and moisture permeability.

Further, in the examples of FIGS. 4 and 5, the first fiber sheet 2 and the third fiber sheet 4 forming the raw material sheet may be joined to each other in the entire surface area, but as shown in FIG. , partially joined to each other. By partially joining the first fiber sheet 2 and the third fiber sheet 4, the space 40 can be formed by the non-joining portion formed between the first fiber sheet 2 and the third fiber sheet 4. Further, by forming such a space 40, the cloth 1 is more excellent in moisture evapotability, heat dissipation, and moisture permeability as in the case of forming the space 9.

(Joining of the elastic member 5 with respect to the raw material sheet forming the laminated sheet 30)

For example, after the second fiber sheet 3 and the third fiber sheet 4 are partially joined and integrated in such a manner as to form a joined portion and an unjoined portion, the second fiber sheet 3 and the third fiber sheet are faced first. The laminated body of the material 4 is placed on the elastic member 5, and the first fibrous sheet 2 is joined to each other. By performing such a joint, a raw material sheet is formed by forming a laminated integrated structure of the first fiber sheet 2, the third fiber sheet 4, and the second fiber sheet 3, and the first sheet is formed. The elastic member 5 is interposed between the fiber sheet 2 and the third fiber sheet 4 and partially joined to form a laminated sheet 30 in a state in which the elastic sheet 5 is joined to the raw material sheet.

(Method of joining the elastic member 5 with respect to the raw material sheet)

As the bonding method of the elastic member 5 with respect to the raw material sheet, bonding, hot-melting, ultrasonic bonding, or the like can be used, but from the viewpoint of ease of work, it is preferable to follow.

(Method of joining the first fiber sheet 2 and the third fiber sheet 4 forming the raw material sheet)

Moreover, as a method of joining the first fiber sheet 2 and the third fiber sheet 4 forming the raw material sheet, A method which can be used as a joining method of the elastic member 5 with respect to the raw material sheet can be appropriately selected.

As a method of joining the first fiber sheet 2 and the third fiber sheet 4 forming the raw material sheet, and a method of joining the elastic member 5 to the raw material sheet, it is preferable to use a hot-melt adhesive when using the following. As an adhesive. Hereinafter, a case where a hot melt adhesive is used as an adhesive will be described. In order to use the hot melt adhesive, the second fiber sheet 3 and the third fiber sheet 4 are partially joined, and as shown in FIGS. 5 and 6, the hot melt adhesive is partially applied to the third fiber sheet 4 (or The second fiber sheet 3 may be partially coated with a hot-melt adhesive), and the two layers may be laminated and integrated. At this time, the non-adjacent portion 8 of the adhesive layer 7 is not formed between the second fiber sheet 3 and the third fiber sheet 4, and the space 9 is formed by the non-adjacent portion 8. Further, since the elastic member 5 is interposed between the first fiber sheet 2 and the third fiber sheet 4, the first fiber sheet 2 and the third fiber sheet 4 are bonded to each other by the portion of the elastic member 5. The first fiber sheet 2 is partially joined to the third fiber sheet 4. That is, the hot-melt adhesive is blown and coated on the circumferential surface of the plurality of elastic members 5 at a predetermined interval and in parallel as shown in FIG. 5, so that the elastic member 5 coated with the hot-melt adhesive is located. Between the surface of the third fiber sheet 4 and the first fiber sheet 2, the elastic member 5 is sandwiched between the surfaces of the first fiber sheet 2 and the like, and joined and integrated. Although not shown in FIG. 6, the opposing surface of the first fiber sheet 2 and the third fiber sheet 4 of the elastic member 5 does not have the non-adjacent portion 8, and the space 9 is formed by the non-adjacent portion 8. . As described above, by the structure in which the space 9 obtained by the non-rear portion 8 is formed, the functions of the water evapotranspiration, heat dissipation, and moisture permeability of the cloth 1 are improved.

(concave line 6 and pleat 60)

In the fabric 1, as shown in FIGS. 2 to 4, a plurality of convex portions 6a and recessed portions 6b are formed, and an uneven surface is formed on the cloth 1. In the cloth 1, the uneven line 6 composed of the convex portion 6a and the concave portion 6b which are alternately continuously formed along the longitudinal direction of the cloth 1 is formed. Concave line 6 is along the fabric 1 The surface direction is formed by arranging a plurality of rows in a direction across the longitudinal direction of the cloth 1 (in the direction of the longitudinal direction of the cloth 1 in the example of FIG. 1), and at least a portion of the adjacent concave and convex rows are spaced apart from each other. form. When the cloth 1 is viewed from above, the portion where the gap is formed corresponds to the position at which the elastic member 5 is disposed. Further, in the cloth 1, the plurality of embossed rows 6 form the pleats 60. Regarding the length of the uneven line 6, the cloth 1 can be used as the surface material 15 or the outer casing 11 from one end to the other end in the longitudinal direction thereof, preferably along the FIGS. 1 and 2 The X direction (first direction) extends in one line from one end to the other.

In the cloth 1, the convex portion 6a and the concave portion 6b forming the pleat portion 60 are formed so as to be deformable in accordance with the stretching force of the plurality of elastic members 5 joined to the raw material sheet.

(patterning of pleats 60)

In the fabric 1, the pattern of the pleats 60 is determined by the size or pitch of the convex portion 6a and the concave portion 6b, the width of the uneven line 6, the unevenness of the convex portion 6a and the concave portion 6b, and the like, and the like. The selection or the conditions of the arrangement of the elastic members 5 are determined.

For example, when the elastic member 5 is a linear elastic body 5a as shown in FIG. 1 or FIG. 2, as shown in FIG. 1 and FIG. 2, for the cloth 1, the linear elastic body 5a is formed. The direction in which the linear shape extends is disposed in the same direction as the longitudinal direction (the X direction in FIGS. 1 and 2), and the plurality of linear elastic bodies 5a are arranged in parallel so as to be spaced apart from each other. In other words, the linear elastic body 5a is provided with a plurality of spacers in the Y direction to form a linear elastic body row. Further, the interval between the linear elastic bodies 5a in the Y direction may be substantially equal intervals. For example, the linear elastic body 5a may be closely arranged in the peripheral portion of the cloth 1 so that the interval is shortened. Further, the interval may be gradually shortened from the central portion of the fabric 1 toward the peripheral portion. The cloth 1 is used as the surface material 15 of the absorber 14 by closely arranging the linear elastic body 5a at the peripheral portion of the cloth 1. The side of the surface material 15 will function as a wrinkle. Instead of or in combination with this, the elastic force of the linear elastic body 5a at the peripheral portion of the cloth 1 is different from the elastic force of the linear elastic body 5a at the central portion of the cloth 1, and the linear elasticity of the peripheral portion is made. The elastic force of the body 5a is stronger than the elastic force of the linear elastic body 5a at the center portion. Further, in the present embodiment, the peripheral portion of the surface material 15 is in the range of about 5 to 30% toward the center from the end portion on the positive side in the Y direction of Fig. 11 below, and is the negative side from the Y direction. The end portion is in the range of about 5 to 30% toward the center, and the center portion is outside the both ends.

In the fabric 1, as shown in FIG. 5, a plurality of linear elastic bodies 5a are provided between the first fiber sheet 2 and the third fiber sheet 4 at predetermined intervals, and adjacent linear elastic bodies are provided. The interval between 5a can be set as appropriate. That is, the number of linear elastic bodies 5a per unit area can be arbitrarily set. However, if the number of the linear elastic bodies 5a is increased and the interval between the adjacent linear elastic bodies 5a is reduced, the convex portions 6a and the concave portions 6b in the row of the concave and convex rows 6 can be finely formed, and The number of recesses that make the passage of urine or sweat increase, and not only that, but also maintains its shape. Accordingly, the pleats 60 are preferably not deformed, and the fabric 1 is preferably softened, water-evaporable, and heat-dissipating and moisture-permeable. According to this, the distance between the pleats 60, that is, the distance between the convex portions 6a is preferably 2.00 mm to 7.00 mm. The distance between the convex portions 6a is preferably 3.00 mm to 6.25 mm. By making the convex portions 6a narrower than each other, fine pleats appear, so that the appearance becomes beautiful, and the contact area between each pleat and the skin becomes small, so that the touch of the skin becomes good, and further, since each unit volume The surface area becomes large, so the absorption of sweat and the like is improved. On the other hand, by widening the interval between the convex portions 6a, the elastic force of the linear elastic body 5a can be appropriately suppressed, and the manufacturing cost can be reduced.

Further, the convex portion 6a and the concave portion 6b which form the adjacent uneven rows 6 in Figs. 1 and 2 are illustrated in such a manner that the convex portions 6a and the concave portions 6b of the respective concave and convex rows 6 are formed. Although it is formed in a state in which the Y direction is continuously connected, the portion where the convex portion 6a and the concave portion 6b are discontinuous may be generated depending on the number of the linear elastic bodies 5a, the arrangement method, and the like. Further, the uneven line 6 may be formed in a state in which the positions at which the convex portions 6a and the concave portions 6b forming adjacent concave and convex lines are formed are shifted from each other in the X direction. In this case, the pleats 60 may have portions in which the convex portions 6a and the concave portions 6b forming the adjacent uneven rows 6 are discontinuous in the Y direction. That is, the pleats 60 are formed in a pattern in which the convex portions 6a and the concave portions 6b are unevenly formed. When each of the adjacent concave and convex rows 6 in the plurality of rows of concave and convex rows 6 is formed, the convex portions 6a and the concave portions 6b are formed in a pattern in which the patterns of the convex portions 6a and the concave portions 6b are formed at positions shifted from each other in the X direction, for example, When the cloth 1 is used as the surface material 15, the side of the urine or the like is branched in the X direction and moved in the Y direction. Therefore, the diffusibility is further improved, and the side leakage preventing function can be further improved.

(Manufacturing method of cloth 1)

Next, an example of a method of manufacturing the cloth 1 will be described. Here, an example of a method for producing the cloth 1 will be described by taking the case where the first fiber sheet 2, the third fiber sheet 4, and the second fiber sheet are used in the cloth 1 In the raw material sheet of the laminated structure of 3, the linear elastic body 5a is used as the elastic member 5, the linear rubber is used as the linear elastic body 5a, and the adhesive is used for bonding the elastic member 5 and the raw material sheet, and the adhesive is used. A hot melt adhesive acts as an adhesive.

Further, in the case of the cloth 1, it is preferable to use a sheet containing a cellulose-based component as the third fiber sheet 4 and a point of using the nonwoven fabric as the first fiber sheet 2 and the second fiber sheet 3, respectively. An example in which the paper is used as the third fiber sheet 4 and a non-woven fabric (for example, a heat-bonding nonwoven fabric, a spunlace nonwoven fabric, a spunbonded nonwoven fabric, or the like) is used as the first fiber sheet 2 and the second fiber sheet 3 is exemplified. Description.

The roll-wound body of the paper (the third fiber sheet original sheet) which is the original sheet of the third fiber sheet 4 is wound, and the third fiber sheet original sheet formed of paper is wound up. The rolled-out third fiber sheet original sheet is subjected to an embossing roll to press the third fiber sheet original sheet between the rolls, thereby mechanically softening the third fiber sheet original sheet, and further The paper is coated with a hot melt adhesive. The process of softening mechanically (mechanical softening treatment) means a process of softening the state of the surface of the sheet by mechanical action. The mechanical softening treatment is not particularly limited, and for example, an embossing treatment using a smooth roll or an embossing treatment using an intermeshing roll having a plurality of protrusions on the roll surface may be used. When the embossing treatment using the engaging rolls as in the latter is used as the mechanical softening treatment, a plurality of fine holes can be formed in the original sheet of the third fiber sheet. In this case, when the hot-melt adhesive is partially blown to the original sheet of the third fiber sheet after the embossing treatment, the hot-melt adhesive penetrates the fine pores formed in the original sheet of the third fiber sheet, and the following The subsequent ease of the original sheet of the second fiber sheet 3 is improved. Further, in the case where the embossing treatment is used as the mechanical softening treatment, a plurality of embossing apparatuses may be provided and the embossing treatment may be repeated. In this case, the embossing processing device may be the same, and a plurality of embossing processing devices may be provided. In the case where a plurality of embossing apparatuses are provided, as the plurality of embossing apparatuses, means for giving the direction of embossing or the shape of the embossing and the size thereof different from each other may be employed. By softening the treatment mechanically, the softness of the third fiber sheet 4 is improved, and the touch of the skin is improved. Further, for the softening treatment, mechanical processing other than embossing can be employed.

On the other hand, the second fiber sheet original non-woven fabric is wound up from the roll wound body in which the nonwoven fabric (the second fiber sheet original sheet non-woven fabric) which is the original sheet of the second fiber sheet 3 is wound. The second fiber sheet original sheet nonwoven fabric is set to be the same as the third fiber sheet original sheet coated with the hot melt adhesive. In the state of being stacked, the bonded sheet is obtained by laminating a pair of smooth rolls to produce both the second fiber sheet original sheet nonwoven fabric and the third fiber sheet original sheet. In the joined sheet, the second fiber sheet original sheet nonwoven fabric is partially joined to the third fiber sheet original sheet.

The plurality of linear elastic bodies 5a are wound out from a roll wound body in which a plurality of linear elastic bodies 5a are wound in parallel. At this time, the linear elastic body 5a is wound up in a state of being stretched by a predetermined tensile force (elongated state). The hot melt adhesive is blown as an adhesive to the linear elastic body 5a in the stretched state. The linear elastic body 5a is continuously blown over the entire circumferential surface of the linear elastic body 5a throughout the longitudinal direction thereof.

The non-woven fabric (the first fiber sheet original non-woven fabric) is wound from the roll winding body in which the nonwoven fabric which is the original sheet of the first fiber sheet 2 is wound. The first fiber sheet original sheet nonwoven fabric is fed so as to face the bonding sheet. The linear elastic body 5a to which the adhesive is applied as described above is fed between the joined sheet and the first fibrous sheet original non-woven fabric by sandwiching, and is formed on the joined sheet and the first fibrous sheet original. A structure in which the linear elastic body 5a is supplied between the sheet non-woven fabrics. In this case, the linear elastic body 5a is supplied between the surface of the third fiber sheet original sheet of the joining sheet and the first fiber sheet original sheet nonwoven fabric.

The structural system in which the linear elastic body 5a is supplied so as to sandwich the linear elastic body 5a between the surface of the original sheet of the first fiber sheet and the surface of the first sheet of the first fiber sheet is passed through a smooth roll. At this time, the bonding sheet, the linear elastic body 5a, and the first fiber sheet original sheet non-woven fabric are pressure-bonded to each other by a smooth roll, and laminated and integrated. Here, since the first fiber sheet original sheet non-woven fabric and the third fiber sheet original sheet are joined by the linear elastic body 5a, the first fiber sheet original sheet non-woven fabric and the third fiber sheet original sheet are partially localized. Engage. In this manner, the second fiber sheet original sheet nonwoven fabric is partially joined to the third fiber sheet original sheet, and the first fiber sheet original sheet is not woven and the third sheet is formed. The original sheet laminate sheet is formed by partially joining the original sheets of the fiber sheets. The original laminated sheet can also be mechanically softened as needed. As the mechanical softening treatment, for example, the treatment of the original sheet laminated sheet by the embossing roll can be employed. By performing the mechanical softening treatment, the softness of the laminated sheet 30 formed of the original sheet laminated sheet can be improved, and the flexibility of the cloth 1 can be further improved.

The original laminated sheet is subjected to a cutting process in which the length dimension in the longitudinal direction (the X direction in Figs. 1 and 2) is a predetermined length. By the cutting process, the cloth 1 having the first fiber sheet 2, the second fiber sheet 3, the third fiber sheet 4, and the linear elastic body 5a is formed as follows. By cutting the linear elastic body 5a, the linear elastic body 5a in a stretched state is released from the tensile force, and a restoring force is generated in the linear elastic body 5a, and the linear elastic body 5a is contracted. At this time, the contraction stress acting on the restoring force of the linear elastic body 5a acts on the first fiber sheet 2, the second fiber sheet 3, and the third fiber sheet 4. In other words, the first fiber sheet 2, the second fiber sheet 3, and the third fiber sheet 4 are subjected to a force in a contraction direction. The first fiber sheet 2, the second fiber sheet 3, and the third fiber sheet 4 are formed to be soft and contract in the contraction direction of the linear elastic body 5a. At this time, in particular, the convex portion 6a and the concave portion 6b are formed on the surface of the first fiber sheet 2, thereby forming an uneven surface. The convex portion 6a and the concave portion 6b are alternately formed side by side in the contraction direction of the linear elastic body 5a, thereby forming the uneven line 6. Further, a plurality of rows of concave and convex rows 6 are formed side by side in the direction transverse to the contraction direction of the linear elastic body 5a. In this manner, a plurality of embossed rows 6 are formed to form the pleats 60. In this manner, the cloth 1 formed of the laminated sheet 30 having the plurality of pleats 60 is formed.

With respect to the cloth 1 illustrated in Fig. 1 and Fig. 2, the linear elastic body 5a is in a state of being contracted by the restoring force, that is, in a non-stretched state, along the longitudinal direction of the linear elastic body 5a in the non-stretched state. (the longitudinal direction of the laminated sheet 30 in FIG. 1 and FIG. 2, that is, the X direction) is a direction in which the convex portion extends in the direction orthogonal to the width direction of the laminated sheet 30 in FIG. 1 and FIG. 2, that is, the Y direction. The concave portion 6b is formed by arranging a plurality of the concave portions 6b in the X direction to constitute the concave and convex rows 6. The uneven rows 6 are formed by arranging a plurality of rows in the Y direction, and when the fabric 1 is viewed as a whole, pleats are formed.

The laminated sheet 30 is given an elastic force by the linear elastic body 5a disposed inside the laminated sheet 30. Therefore, when the laminated sheet 30, that is, the cloth 1 is stretched in the X direction in Figs. 1 and 2, the linear elastic body 5a is elongated and the cloth 1 is also elongated and expanded, and when the state is released, the thread is linear. The elastic body 5a is contracted by its restoring force, whereby the cloth 1 is also restored to its original size. As described above, since the cloth 1 has stretchability, when the cloth 1 is used as the surface material 15 of the absorber 14, it is excellent in the feeling of wearing with respect to the body. Similarly, when the cloth 1 is used as the outer casing 11 of the disposable shorts 10, it is excellent in the feeling of wearing with respect to the body.

Further, when the cloth 1 is formed in the pleat portion 60 composed of the plurality of embossed rows 6, the embossed rows 6 which are adjacent to each other are formed such that the positions at which the convex portions 6a and the concave portions 6b are formed are shifted in the X direction. In the case where the cloth 1 is used as the surface material 15, the side of the urine or the like is branched in the X direction while moving in the Y direction. Therefore, the diffusibility is further improved, and the side leakage preventing function can be further improved. Further, the urine can be quickly moved from the surface material 15 to the absorbent body 14, and the urine stays on the surface material 15 for a short period of time, and can be a surface material 15 which is less likely to cause sultry heat. When the fabric 1 is used as the outer casing 11 of the disposable shorts 10, even if sweat is generated between the outer casing 11 and the skin, it is easily branched on the pleat portion 60 of the fabric 1 in the X direction. When the yarn travels in the Y direction, the diffusibility is further improved, and the sweat is less likely to remain in the limited area, and the casing 11 which is suffocating is less likely to be generated.

When a hydrophilic nonwoven fabric is used as the first fiber sheet 2 and the second fiber sheet 3, as the hydrophilic fiber, for example, a vinyl alcohol type can be used in terms of adhesion to the hydraulic composition. Fiber and hydrophilized polypropylene fiber. In addition, the weight per unit area of the first fiber sheet 2 and the second fiber sheet 3 is preferably 10 to 50 g/m ² as an example.

In the case where paper is used as the third fiber sheet 4, a paper material formed of a material mainly composed of pulp paper or pulp can be used. As the pulp to be used as the raw material, wood pulp, synthetic pulp, waste paper pulp, or the like can be used. Further, it is not limited to natural fibers such as pulp, and regenerated fibers such as enamel may be used. Further, the basis weight of the third fiber sheet 4 is preferably 10 to 50 g/m ² as an example.

Moreover, in the process of manufacturing the cloth 1, the third fiber sheet 4 is formed in a state in which an adhesive is applied. The application pattern of the adhesive on the third fiber sheet 4 is not particularly limited, and examples thereof include a method of applying a line, a dot, a stripe, a spiral, a block, a pattern, and the like. Moreover, in the process of manufacturing the cloth 1, the linear elastic body 5a is in a state in which an adhesive is applied. The application pattern of the adhesive on the linear elastic body 5a is not particularly limited, and examples thereof include a method of coating into a linear shape, a dot shape, a spiral shape, a pattern shape, and the like. As the coating pattern, a plurality of patterns may be used in combination or in combination.

The cloth 1 manufactured in the above manner is adjusted to a predetermined size and shape, and is applied to the outer surface 11 of the surface material 15 or the disposable shorts 10.

When the cloth 1 is applied to the surface material 15, the raw material sheet of the cloth 1 and the elastic member 5 correspond to the sheet (the first sheet) and the elastic member (the first elastic member) which form the surface material 15, and the cloth 1 The elastic direction corresponds to a direction (first direction) defined by the elastic direction of the first sheet forming the surface material 15. Moreover, the uneven line 6 and the pleat portion 60 of the raw material sheet of the cloth 1 correspond to the uneven line (first uneven line) and the pleat portion (first pleated portion) of the surface material 15. Therefore, formation The convex portion 6a and the concave portion 6b of the first pleat portion are formed so as to be deformable in accordance with the expansion and contraction force of the plurality of first elastic members joined to the first sheet.

When the cloth 1 is applied to the exterior body 11, the raw material sheet and the elastic member of the cloth 1 correspond to the sheet (second sheet) and the elastic member (second elastic member) forming the exterior body 11, and the cloth The elastic direction of 1 corresponds to the elastic direction of the second sheet forming the outer casing 11. The elastic direction of the second sheet is selected from the first direction and the direction (selection direction) defined in the second direction different from the first direction. In the example of FIG. 11, as the second direction, the direction orthogonal to the first direction is defined, and the selection direction is the second direction. Further, the uneven line 6 and the pleat portion 60 of the raw material sheet of the cloth 1 correspond to the uneven line (second uneven line) and the pleated portion (second pleated portion) in the outer casing 11. Therefore, the convex portion 6a and the concave portion 6b forming the second pleat portion are formed so as to be deformable in accordance with the expansion and contraction force of the plurality of second elastic members joined to the second sheet.

(Another form of the raw material sheet when the cloth 1 is used as the surface material 15 of the absorber 14)

When the cloth 1 is used as the surface material 15 of the absorber 14, the second fiber sheet 3 is in contact with a fiber assembly composed of pulp fibers or the like and an absorbent core 22 containing a water-absorptive polymer. Therefore, the third fiber sheet 4 can be used as the raw material sheet instead of the second fiber sheet 3, and the first fiber sheet 2 and the second layer of the third fiber sheet 4 can be formed in three layers. Further, the raw material sheet may have a two-layer structure in which the second fiber sheet 3 is omitted. In these cases, the elastic member 5 is disposed between the first fiber sheet 2 and the third fiber sheet 4. Moreover, in such a case, if the hot-melt adhesive is partially applied to the elastic member 5, and the first fiber sheet 2 and the third fiber sheet 4 are joined, a laminated sheet can be formed, so that the subsequent reduction can be reduced. (joining) step.

(Printed layer 4a when cloth 1 is used as outer casing 11)

When the fabric 1 is used for the outer casing 11 of the disposable shorts 10, the printed layer 4a may be formed in advance on the paper which becomes the third fiber sheet 4 from the viewpoint of improving the design (refer to FIG. 4). . The printed layer 4a can be formed by appropriately performing printing on paper.

(Disposable Shorts 10)

The disposable shorts 10 includes a sheet-shaped outer casing 11 which is obtained by cutting the fabric 1 into a disposable shorts 10 and adjusted to a predetermined shape, and an absorbent body 14 attached to the outer casing 11.

(outer body 11)

The exterior body 11 can be formed by cutting the fabric 1 by a cutter (not shown) according to the size of the disposable pants 10. Further, as shown in FIGS. 7 and 8, the exterior body 11 can be formed by cutting both side edges along the longitudinal direction thereof so as to be concave toward the center in a plan view.

The waistline wearing portion 12 is formed in the outer casing 11, and the waist wearing portion 12 is formed by bending both ends of the outer casing 11 in the X direction, and is worn on the waist of the user. Further, at one end of the outer casing 11 in the X direction, a detachable structure portion that is detachably joined to the other end of the outer casing 11 in the X direction is provided. The detachable structure portion is not particularly limited as long as it has a structure (joining structure forming body) in which the end portions of the outer casing 11 can be joined to each other, and the surface fasteners and double-sided tape can be appropriately selected. A structure portion in which the bonding structure is formed by an adhesive layer or the like. In the disposable shorts 10 shown in FIGS. 7 to 10, a detachable structure portion is formed at one end of the outer casing 11 in the X direction, and the detachable structure portion is provided at the other end of the X direction of the outer casing 11 The engaging surface fastener 13 is engaged as an inter-end joint structure forming portion. Further, in the exterior body 11, an adjustment portion 16 for adjusting the size is provided.

Furthermore, in the disposable shorts 10 shown in FIG. 7, the outer casing 11 is such that When the user wears the disposable shorts 10, the surface fastener 13 is attached so that the end side of the surface fastener 13 becomes the user's rear side (hip side).

Moreover, in the disposable shorts 10 shown in FIG. 7, when the user wears the disposable shorts 10, the position of the face fastening member 13 becomes the waist position of the user, and the waist portion of the outer casing 11 The surface fastening member 13 is provided at the corresponding position. The disposable shorts 10 shown in Fig. 7 are so-called open-type shorts in which the waist is separated from the front and rear and can be opened. Moreover, the disposable shorts 10 shown in this example are formed without providing a three-dimensional structure such as wrinkles, and can be formed into a planar shape when not in use. Moreover, it is easy to conform to the shape of the user's body (for example, the buttocks) by the expansion and contraction of the elastic member 5 in the Y direction as follows. However, these contents are not prohibited from adding a wrinkle function for preventing the side leakage of urine or the like to the disposable shorts 10, and a member having a wrinkle function may be provided in the disposable shorts 10.

Fig. 7 is a schematic view showing the disposable shorts 10 of the embodiment. In Fig. 7, the elastic member 5 (linear elastic body 5a) is indicated by a dotted line. In addition, FIG. 8 is a view in which the absorbent body 14 is attached to the disposable shorts 10 of the present embodiment, and the description of the elastic member 5 (linear elastic body 5a) is omitted in order to simplify the drawing. Further, as shown by the arrow in Fig. 8, the surface material 15 of the absorber 14 is formed so as to be expandable and contractible in the X direction by the elastic member 5.

The exterior body 11 is formed by cutting the cloth 1 as described above. At this time, the exterior body 11 cuts the cloth 1 so as to have elasticity in a direction selected in a predetermined direction to form the exterior body 11. The selection direction is selected from the first direction which is the elastic direction of the surface material 15 of the absorber 14, and the direction which is defined by the second direction which is different from the first direction. In the exterior body 11 shown in the example of FIG. 7, FIG. 8, etc., the 1st direction corresponds to the X direction, the 2nd direction corresponds to the Y direction, and the 2nd direction is selected as a selection direction. In the example of the exterior body 11, the selection direction is orthogonal to the first direction.

In the exterior body 11 shown in FIG. 7 and FIG. 8 and the like, the first fibrous sheet 2, the third fibrous sheet 4, and the second fibrous sheet 3 are placed on the skin surface side in contact with the skin of the user. These sheets are arranged in sequence. In the exterior body 11, the printing layer 4a can be provided in the 3rd fiber sheet 4. Since the design property can be further improved, the printed layer 4a is preferably formed in the region of the waist wearing portion 12 and its periphery. However, in this case, it is not excluded that the entire third fiber sheet 4 is formed as the printing layer 4a, and the entire outer body 11 is patterned. The printed layer 4a is formed by the third fiber sheet 4 disposed on the inner side of the second fiber sheet 3 of the disposable shorts 10, and the printed layer 4a is seen through the outer side, so that the disposable shorts 10 can be lifted. Design.

The waist wearing portion 12 is formed by bending both ends of the outer casing 11 in the X direction as described above. Therefore, the elastic member 5 (linear elastic body 5a) is disposed more closely than the other portions, and the elastic force acting on the waist circumference of the user is stronger than that of the other portions, and the user wears the disposable type while standing. In the case of the shorts 10, the disposable shorts 10 are not easily offset downward.

In the exterior body 11 shown in the example of FIG. 8, the surface fastener 13 is formed in a rectangular shape in which the direction along the X direction is a longitudinal direction. In the exterior body 11, two surface fasteners 13 are provided on one end side in the X direction on both end sides in the Y direction, for a total of four. Each of the surface fasteners 13 is detachably formed on the end portion of the outer casing 11 at both end portions in the longitudinal direction (X direction), and the other end side, which is not provided with the surface fastener 13 . Further, in the outer casing 11 shown in the example of Fig. 8, the surface fastener 13 is traversed from the waist wearing portion 12 from the formation region of the waist wearing portion 12 to the outer side of the formation portion of the waist wearing portion 12. It is arranged to form a boundary line inside and outside the area. However, this case is not excluded from the exterior body 11, and the surface fastener 13 is disposed so as to be housed inside the formation region of the waist wearing portion 12. As a method of joining the surface fastener 13 to the exterior body 11, it can be joined by a heat fusion bonding, an ultrasonic bonding, a heat sealing bonding or an adhesive. Appropriate choice in methods such as law. The waist wearing portions 12 formed at both end portions of the outer casing 11 along the longitudinal direction (X direction) are not limited to the case where the use surface fasteners 13 are engaged with each other as long as they are formed to be engageable with each other. For example, instead of using the engaging method of the face fastener 13, an engaging method using an adhesive such as a double-sided tape may be employed. Further, the waist wearing portions 12 formed at both end portions of the outer casing 11 along the longitudinal direction (X direction) can be engaged with each other by mechanical engagement.

The adjustment portion 16 is formed at the end portion of the waist wearing portion 12 of the waist wearing portion 12 in the longitudinal direction (X direction) on the end portion side of the outer casing 11 in the Y direction. The predetermined portion is formed by a portion including a region in which the surface fastener 13 is disposed. The user adjusts the waist wearing portion 12 of the waist wearing portion 12 which is formed on one of the end portions of the outer casing 11 in the longitudinal direction (X direction) by the adjusting portion 16 and is not provided with the surface fastening member 13. Joint location. At this time, the user applies a stress in the Y direction to a part of the adjustment portion 16, and the exterior body 11 is elongated in the Y direction by a predetermined portion including the waist wearing portion 12 on which the surface fastener 13 is provided. Moreover, when the face fastening member 13 is joined to the waist wearing portion 12 where the face fastening member 13 is not provided, the stress is applied to the outer body 11 from the user's body in such a manner that the disposable pants 10 are suitable for the shape of the user. The outer casing 11 is stretched and contracted by this stress. Thus, the shape of the outer casing 11 can be appropriately adjusted in such a manner that the disposable shorts 10 are suitable for the shape of the user.

Previously, in the case of an open type disposable diaper, it is assumed that a disposable diaper is worn in a state where the infant or the caregiver is sleeping, and it is difficult to wear the conventional disposable diaper in a state where the user is standing or seated. It is also difficult to adjust the tape portion according to the body shape. Further, the conventional disposable shorts are easy to wear in the same state as the ordinary shorts, but cannot be closely attached to the waist of the user due to the rubber of the waist, and are not easily attached to the buttocks.

In this regard, first, as shown in FIG. 9, the disposable shorts 10 according to the embodiment of the present invention is formed by joining the surface fastener 13 to the waist wearing portion 12 on the other end side to form a pants shape. In this state, in the same manner as the user wears the ordinary shorts, the disposable shorts 10 are worn (wearing) in a standing state or in a state of being seated on a chair. That is, the disposable shorts 10 can be worn as easily as ordinary shorts.

Further, after the user wears the disposable pants 10, a (for example, right side) adjusting portion 16, that is, a fastening member 13 is used, and the position of the surface fastening member 13 is adjusted according to the shape of the user. For example, if the surface fastener 13 is adjusted in the Y direction, the size of the waist can be adjusted by the expansion and contraction of the elastic member 5. As long as the surface fastening member 13 is adjusted in the X direction, the leg circumference can be adjusted by the expansion and contraction of the elastic member 5. The size of the arrow (shown by arrow A in Fig. 10). Further, as long as the surface fastener 13 is adjusted in the oblique direction (for example, the obliquely upper right direction in Fig. 10), the size of the waist circumference and the hip circumference can be adjusted at one time. As such, the disposable shorts 10 can fit and fit snugly to the shape of each user.

In the case where the user can stand, if the user wears the disposable shorts 10 and stands, the disposable pants 10 are taken down vertically (in the direction D in FIG. 10), and the confirmation can be confirmed. The state of the absorber 14 is described, and it is also easy to confirm whether or not the absorber 14 needs to be replaced. Further, the replacement of the absorbent body 14 can be performed in a state in which the user is standing or in a seated state. Moreover, the disposable shorts 10 can withstand several washings, so that it is economical to use the absorbent body 14 for a certain period of time.

Further, the disposable shorts 10 of the present embodiment can be used regardless of age, sex, and body shape (for children, adults, men, women, etc.), and can also be applied to animals other than humans.

Regarding the outer casing 11 of the disposable shorts 10 of the present embodiment, The concave portion 6b of the adjacent concave-convex rows 6 among the pleats 60 formed by the plurality of concave-convex rows 6 is formed at a position shifted from each other in the X direction (Y direction in FIGS. 7 to 9) in FIGS. 1 to 3. At this time, according to the disposable shorts 10 of the present embodiment, the following effects can be obtained. That is, in the case of wearing the disposable shorts 10 of the present embodiment, there is a case where the user sweats on the buttocks or the waist. If the sweat enters the concave portion 6b of the concave and convex row 6 forming the pleat portion 60 of the outer casing 11 in the disposable shorts 10, it will follow the concave portion 6b toward the Y direction in FIGS. 1 to 3 (in FIGS. 7 to 9) X direction) diffusion. Further, the sweat diffused along the surface of the pleat portion 60 of the outer casing 11 is diffused from the one row of the uneven line 6 toward the adjacent concave and convex line 6, and is diffused toward the Y direction in Fig. 1, and further toward the figure. The X direction (the Y direction in FIGS. 7 to 9) in FIG. 3 branches and spreads. In this way, the sweat generated on the buttocks or the waist of the user does not stay in a predetermined area of the pleat portion 60 of the outer casing 11 and spreads widely, and can effectively reduce the sweatiness of the user's buttocks or waist. Further, in the pleated portion 60 of the outer casing 11, when the concave portions 6b of the adjacent concave and convex rows 6 are formed at positions shifted from each other in the X direction in FIGS. 1 to 3, the adjacent concave portions may be adjacent The recesses 6b of the row 6 are all formed at positions shifted from each other in the X direction in FIGS. 1 to 3, and a part of the recesses 6b may be formed at positions shifted from each other in the X direction in FIGS. 1 to 3.

(absorber 4)

In the disposable shorts 10 shown in the example of Fig. 8, the absorber 14 is attached to the exterior body 11. For the disposable shorts 10, it is preferable that the absorbent body 14 is attachable and detachable with respect to the exterior body 11. The method of attaching the absorber 14 to the outer casing 11 is not particularly limited, and may be, for example, a method using an adhesive tape. The method of using the adhesive tape can be specifically achieved by providing an adhesive tape on the non-skin surface side of the absorbent body 14 so that the mounting surface of the adhesive tape in the absorbent body 14 and the outer casing 11 are predetermined. The absorber 14 is attached to the exterior body 11 in the opposing direction. Furthermore, adhesive tape The number of the installation is not particularly limited, and may be one location, two locations, or three or more locations.

As shown in FIG. 11, the absorber 14 is provided with the surface material 15. Fig. 11 is a schematic plan view schematically showing a structure of an absorber 14 attachable to the exterior body 11. In addition, in FIG. 11, the illustration of the pleat formed in the surface of the surface material 15 is abbreviate|omitted.

The absorbent body 14 shown in the example of Fig. 11 is provided with a surface material 15 on the skin side, and a back surface sheet 31 (see Fig. 12) on the non-skin surface side, and the absorbent core 22 is provided between them. In the absorbent core 22, the skin surface side is covered by the surface material 15, and the non-skin surface side is covered by the back surface sheet 31.

The surface material 15 is formed by cutting the cloth 1 and adjusting it to a predetermined shape. In the example of Fig. 11, the surface material 15 is formed in a rectangular shape.

(back sheet 31)

Fig. 12 is a view showing the non-skin side of the absorbent body 14. The back sheet 31 is a structure that functions to prevent the body fluid that has permeated from the surface material 15 into the absorber 14 from being transmitted to the non-skin surface side of the absorber 14 . The back sheet 31 is not particularly limited as long as it is water-repellent, and a sheet made of, for example, polyethylene can be used. Moreover, as the back surface sheet 31, paper which has been subjected to water repellent processing such as paraffin paper or a hydrophobic non-woven fabric such as spunbond can be used.

As shown in FIG. 12, the back sheet 31 is preferably formed of a film portion 28 having a film 24. Here, the film 24 is a well-known moisture permeable film which transmits a vapor without permeating a liquid, and the absorptive core body 22 is arrange|positioned on the skin surface side of this film 24.

In the absorbent body 14, when the absorbent body 14 is viewed in plan, the outer peripheral contour of the absorbent core 22 is further outside, and the surface material 15 and the back surface are opposed to the surface material 15 and the film 24. The face sheets 31 are joined. In this case, the absorbent core 22 is laminated (arranged) on the skin surface side (inner surface side) of the back sheet 31 which is the outer casing, and a predetermined region of the surface material 15 is formed with respect to the back sheet. The joint region 42 (see FIG. 11) where the joint is joined is formed with a joint region 26 joined to the surface material 15 in a predetermined region of the back sheet 31. A pleated structure is formed in the joint region 26 of the back sheet 31. The pleated structure of the joint region 26 is a structure in which the surface material 15 and the back sheet 31 are joined to each other when the surface member 15 is joined to the back sheet 31 in accordance with the elastic force of the elastic member 5 of the surface member 15. Further, as shown in FIG. 12, the back sheet 31 is formed of the film portion 28 having the film 24 as an example, and further, the formation of the pleated structure is formed on the skin side (the inner surface side of the film 24). In a state in which the absorbent core 22 is laminated (arranged), a joint region 42 (refer to FIG. 11) joined to the film portion 28 is formed in a predetermined region of the surface material 15, and a predetermined region of the film portion 28 is formed with respect to a predetermined region of the film portion 28. The surface material 15 is joined to the joint region 26. Further, a pleated structure is formed in the joint region 26 of the film portion 28. Further, as a method of joining the film 24 to the surface material 15 so as to cover the absorbent core 22, a joining method such as ultrasonic bonding or hot-melt bonding may be employed.

(pleat portion 21)

As shown in the example of FIGS. 11 and 12, the pleated portion 21 having the pleats 17 may be formed in the absorber 14. The pleated portion 21 is formed by joining the pleat forming sheet 20 to the surface material 15. At this time, the joined portion of the pleat-forming sheet 20 and the surface material 15 forms the sheet joint portion 18. The pleated portion 21 shown in the example of FIG. 11 is formed by arranging the pleat forming sheet 20 on the skin surface side surface of the surface material 15 and joining the pleat forming sheet 20 to the surface material 15. At this time, the sheet joining portion 18 is formed by joining the pleat forming sheet 20 to the surface material 15 while avoiding the edge portion of the pleat forming sheet 20, and is formed to traverse the joining region 42. Further, the pleated portion 21 shown in the example of Fig. 11 has a pleat-forming sheet 20, pleats 17, and a joint region formed by the surface material 15. The portion of the pleated base end 43 of the pleats 17 in the portion of the portion 42 is located on the inner side (in FIG. 11, the portion near the center side of the surface material 15 along the Y-axis direction), and the configuration of the erect base end 43 unit.

(pleats 17)

The pleats 17 are formed by a portion where the predetermined position of the pleat-forming sheet 20 is raised from the surface material 15 as the erecting base end 43. In the example of Fig. 11, the pleats 17 are formed by a portion where the formation position of the sheet joining portion 18 is set to the rising base end 43 and rises from the surface material 15. That is, in the example of Fig. 11, the sheet joining portion 18 in the pleat forming sheet 20 is formed with pleats 17 in a portion in the plan view. In this way, the pleats 17 are erected from the surface material 15 and are also in a state in which the outer peripheral contour of the absorbent core 22 and the opposing region of the surface material 15 are also in a state of standing up. The structure of the function of leakage in the Y direction (side leakage).

The pleat-forming sheet 20 has a configuration in which a non-woven fabric is provided with an elastic member. For the elastic member provided on the pleat-forming sheet 20, the same as the elastic member 5 attached to the cloth 1 forming the surface material 15 can be used. As the non-woven fabric forming the pleat-forming sheet 20, the same as the non-woven fabric which can be used as the first fiber sheet can be used.

As shown in the example of Fig. 11 and Fig. 12, in the absorbent body 14, the wrinkle-forming sheet 20 is attached to two portions of the surface material 15, and the wrinkle portion 21 is formed at each position.

(Some 19)

In the pleated portion 21, the portion 19 is a portion of the portion of the surface material 15 where the joint region 42 is formed, which is located on the inner side of the erect base end 43 of the pleats 17, and in the example of Fig. 11, the surface material 15 is formed into a joint. A portion of the region 42 that is located on the inner side of the position of the sheet joint portion 18. The portion 19 has a configuration in which the surface member 15 is viewed from the outer peripheral contour of the absorbent core 22 and the opposing portion of the surface member 15 to the sheet joining portion 18 with a slight rise. As a result, part 19 becomes pleated Similarly, the wrinkle 17 has a structure that suppresses leakage of urine into the Y direction (side leakage).

(absorbent core 22)

As shown in FIG. 11, the absorbent core 14 is provided with the absorbent core 22. The absorbent core 22 includes a fiber aggregate composed of pulp fibers or the like, a superabsorbent polymer (SAP), and the like, and absorbs the body fluid of the wearer of the disposable diaper 10. Since the absorber 14 mainly absorbs urine in the body fluid, it is preferable to add a deodorant to the absorbent core 22. As the deodorant, activated carbon; zeolite; cerium oxide; ceramic; barley; charcoal polymer; carbon nanotube; carbon nanohorn; organic acid such as citric acid, succinic acid, alum (potassium alum).

The both sides of the absorbent core 22 (the portion shown by the thinner dotted line (dotted line) in the portion shown by the dotted line (dotted line in Fig. 11 and Fig. 12) shown in Fig. 11 and Fig. 12 The shape is formed to be curved toward the center in a plan view. That is, as shown in Fig. 11, in the absorbent body 14, the outer shape of the absorbent core 22 is formed from the direction of expansion and contraction (the X direction in Fig. 11,) of the elastic member 5 provided on the surface member 15. The central portion is formed to be gradually thicker toward a predetermined position on both end sides, and is formed such that the central portion in the longitudinal direction of the absorbent core 22 is in the shape of a recess when the absorbent core 22 is viewed in plan. Further, on the side edge portion of the absorbent core 22, the side edge side of the surface material 15 (the +Y direction (the positive direction along the Y direction) and the -Y direction (the negative direction along the Y direction)), There is a portion of the surface material 15 that is stretched in the X direction (the portion indicated by the thick dotted line (dashed line) in the portion indicated by the dotted line (dashed line in FIGS. 11 and 12), but the absorptive core 22 is not present.

As shown in FIG. 11, the surface material 15 and the absorptive core 22 are partially joined in the X direction by a plurality of surface material joints 23, thereby forming a joint structure. In the present embodiment, the partial joining of the surface material 15 and the absorbent core 22 is performed by ultrasonic bonding. Furthermore, Instead of the joint structure of the surface material 15 and the absorbent core 22, the surface material 15 and the absorbent core 22 may be extruded by embossing in a state where the absorbent body 14 is provided with the surface material 15. Pressure construction. By forming the joint structure or the extruded structure of the surface material 15 and the absorbent core 22, a concave structure is formed on the surface region of the absorber 14 which is a region directly above the absorbent core 22, and diffuses to the surface of the surface material 15. The upper urine is easily diffused on the surface of the surface material 15 and guided to the concave structure. Further, the non-skin surface of the surface material 15 (for example, the third fiber sheet 4 excellent in liquid permeability) is formed in a concave structure formed by joining or pressing the surface material 15 and the absorbent core 22. With the absorbent core 22 in contact with each other, the urine can be quickly guided to the absorbent core 22, and the urine diffused on the surface of the surface material 15 can be transferred to the absorbent core 22, which can be suppressed. As the time for the urine to stay on the surface of the surface material 15 becomes longer, it causes a sultry heat. Further, at this time, the convex portion 6a formed in the surface of the surface material 15 and formed into the pleat portion 60 and the concave portion 6b are formed in a pattern to form the convex portion 6a and the concave portion 6b which form the adjacent concave and convex rows 6. When the patterns are shifted from each other, urine is gradually diffused to the portion of the concave structure because the urine spreads over a large extent on the surface of the surface material 15. Therefore, even when a large amount of urine is caught by the surface of the surface material 15, the urine which is rapidly spread on the surface of the surface material 15 can be suppressed while suppressing the accumulation of urine in the concave portion of the surface material 15. To the absorbent core 22, the stuffiness can be further suppressed. Further, according to the surface material 15, by the ventilation of the space 9 shown in Fig. 6, the surface material 15 is easily dried, whereby the effect of suppressing the sultry heat can be enhanced. Further, by the pleat portion 60 of the laminated sheet 30, the surface area per unit volume becomes larger than that of the non-elastic member 5, and in this respect, the urine can be used even in the case of a large amount of urine. Directly directed to the absorbent core 22. Further, since the elastic force of the elastic member 5 does not disappear, the wearing feeling and the wearing comfort are not lowered.

Further, since the plurality of surface material joint portions 23 are provided at predetermined intervals in the Y direction, and the urine is prevented from entering the Y direction, the urine side leakage can be prevented by the surface material joint portion 23.

In the disposable shorts 10 of the present embodiment, the absorbent body 14 is detachably joined to the exterior body 11 by a tape or the like. As is clear from FIGS. 7 and 10, the outer casing 11 is expanded and contracted in the Y direction by the elastic member 5, so that it can be closely attached to the waist, buttocks and legs of the user as described above. On the other hand, since the surface material 15 expands and contracts in the X direction by the elastic member 5, the elastic force of the elastic member 5 acts on the portion in contact with the user's armpit, and the surface material 15 is in close contact with the user. Further, even if the absorber 14 is intended to be displaced downward due to the weight of the urine, since the elastic force acts, the displacement of the absorber 14 can be suppressed.

In the disposable pants 10 of the example of FIG. 8, the absorber 14 is disposed in the exterior body 11 so that the elastic direction of the surface material 15 of the absorber 14 is different from the elastic direction of the exterior body 11. More specifically, the elastic direction of the surface material 15 of the absorber 14 is arranged to be orthogonal to the elastic direction of the exterior body 11. When the disposable shorts 10 are disposed such that the elastic direction of the absorbent body 14 is different from the elastic direction of the outer casing 11, the direction of the elastic force of the elastic member 5 is easily aligned with the movement of the body, and the disposable shorts are used. 10 becomes a person who can more closely adhere to the body. Further, in the case where the disposable shorts 10 are formed in such a manner that the elastic direction of the surface material 15 of the absorbent body 14 and the elastic direction of the outer casing 11 are in the same direction, the disposable shorts 10 also become elastic by the elastic member 5. The role of force is close to the body.

(Manufacturing method of disposable shorts 10)

(formation of absorber 14)

The step of forming the surface material 15 is carried out in the following manner. That is, in the step of forming the surface material 15, the step of manufacturing the cloth 1 is carried out in the above manner. And, by using cloth 1 and cutting The surface material 15 is formed for a predetermined size and shape. At this time, the elastic direction of the elastic member 5 which becomes the expansion-contraction direction of the fabric 1 is cut so that it may become the 1st direction which becomes the elastic direction of the surface material 15. The first sheet forming the surface material 15 has the same structure as the raw material sheet forming the cloth 1. In other words, the surface material 15 includes the raw material sheet constituting the cloth 1 as the first sheet, and has elasticity in the first direction obtained by defining the elastic direction of the cloth 1 in a predetermined direction. In this case, in the step of forming the surface material 15, the following steps are carried out. In other words, the plurality of first elastic members are stretched in the first sheet, and the plurality of first elastic members are joined in the first direction. Further, the first sheet is loaded with the restoring state of the plurality of first elastic members, and the first sheet is loaded with the restoring force of the plurality of first elastic members, and the first portion is formed by the concave portions and the convex portions alternately arranged in the first direction. The uneven line is formed in a plurality of rows in a direction intersecting the first direction, whereby the first pleat is formed in the first sheet.

On the other hand, in the plan view, the absorbent core 22 formed so that the central portion in the longitudinal direction is in the shape of a concave portion is disposed at a predetermined position inside the film 24. Here, the surface material 15 is laminated on the film 24 on which the absorbent core 22 is disposed. At this time, the film 24 and the surface material 15 are laminated so as to sandwich the absorbent core 22. Regarding the surface material 15, the surface on which the skin surface side is predetermined to face is placed upward, and the opposite surface side is placed toward the film 24. Further, the surface material 15 is bonded to the film 24, and the pleat-forming sheets 20 are joined to the both side edges of the film 24 from both side edges of the surface material 15 joined to the film 24. The joining of the surface material 15 and the film 24 is not particularly limited, and is, for example, joined by heat fusion. At a predetermined position on the surface of the surface material 15, the pleat forming sheet 20 as a non-woven fabric is joined with an elastic member to form pleats 7. In this way, the absorber 14 is formed.

Further, the absorbent body 14 is not limited to the case where the wrinkle-formed sheet 20 is joined to a predetermined position on the skin surface side of the surface material 15, and the non-skin side of the surface material 15 may be positioned. The pleats are joined to form a portion of the sheet 20. When a part of the pleat forming sheet 20 is joined at a predetermined position on the non-skin side of the surface material 15, the pleat forming sheet 20 is disposed and joined to the surface material 15 so as to protrude outward from the end portion of the surface material 15. . In the absorber 14, by the action of the elastic member 5 attached to the pleat-forming sheet 20, the portion projecting outward from the end portion of the surface member 15 is slightly raised from the surface member 15. In the absorber 14, a pleat 17 (not shown) in which the position at which the end portion of the pleat-forming sheet 20 is in contact with the end portion of the surface material 15 is formed as the erect base end 43 is formed. Further, a portion 19 is formed at a portion closer to the side of the center side of the surface material 15 than the rising base end 43. At this time, the portion 19 has a configuration in which, by the action of the elastic member 5 attached to the pleat-forming sheet 20, when the surface material 15 is viewed in a plan view, the outer peripheral contour of the absorbent core 22 and the opposing region of the surface material 15 are used as a reference orientation. The sheet joint portion 18 is slightly raised. Thus, the pleat forming portion 20, the erect base end 43, the pleats 17, and the portion 19 form the pleated portion 21.

Further, in the absorber 14, a contact portion 41 for bringing the absorbent core 22 into contact with the surface material 15 is formed in a portion where the absorbent core 22 and the surface material 15 face each other. In the absorber 14, the predetermined portion defined from a portion of the contact portion of the absorber 14 may be formed in a portion other than the predetermined portion to form the absorbent core 22 and the surface material in comparison with other portions of the contact portion 41. 15 A surface material bonding structure 23 that is more firmly in contact with each other. The surface material bonding structure 23 can be formed by locally pressing or joining the surface material 15 and the absorbent core 22. The surface material bonding structure 23 may be formed in one portion or in a plurality of portions. In the example of Fig. 11, a plurality of surface material bonding structures 23 are formed in the X direction by locally pressing or joining the surface material 15 and the absorbent core 22 in the X direction. In this case, the surface material bonding structure 23 is formed in plural in the first direction, and has a joint structure of the absorbent core 22 and the surface material 15 or an extruded structure of the absorbent core 22 and the surface material 15.

(formation of the outer casing 11)

The step of forming the exterior body 11 is carried out in the following manner. That is, in the step of forming the exterior body 11, the step of manufacturing the cloth 1 is carried out in the above manner. Further, by using the cloth 1 and cutting it into a predetermined size and shape, the cloth cutting body is formed, and the cloth cutting system has a size in the longitudinal direction corresponding to the size of the waist wearing portion 12 as compared with the size of the outer casing 11. Formed in a long dimension. At this time, the both edge portions of the cloth-cut body are formed so as to be curved toward the center of the raw material sheet of the first sheet in a plan view, and are formed to have the same size as that of the disposable pants 10 . The way to implement cropping. Moreover, when the fabric 1 is cut, the elastic direction of the elastic member 5 which becomes the expansion-contraction direction of the fabric 1 is performed so that it may become the same as the selection direction of the elastic direction of the surface material 15. In the disposable shorts 10 shown in the example of Fig. 8, the elastic direction of the outer casing 11 is different from the elastic direction of the surface material 15 of the absorbent body 14, so that the selection direction of the elastic direction of the outer casing 11 is selected as In the direction in which the first direction is different (the second direction), the cloth 1 is cut in such a manner that the second direction coincides with the elastic direction of the cloth 1.

Regarding the cloth cut body, both end portions separated in the longitudinal direction are folded back and overlapd corresponding to the size of the waist wearing portion 12. The overlapping portions are joined by various joining methods such as ultrasonic bonding or hot-melt bonding, and bent portions are formed at both end portions of the cloth cutting body. The bent portion is a waist wearing portion 12 formed at both ends of the exterior body 11. Further, the surface fastener 13 is placed at a predetermined position defined by the waist wearing portion 12, and the surface fastener 13 is joined to the cloth cutting body. By joining the surface fastener 13 to the fabric cutting body, the joint structure forming portion is formed at a position formed by the waist wearing portion 12 formed at the one end side of the bent portion. The structure of the waist wearing portion 12 formed by the bent portion formed on the other end side is attached or detached. The surface fastener 13 is formed at one end of the second sheet forming the exterior body 11, and is formed to be The attaching and detaching structure portion of the inter-end joint structure forming portion that is joined to the other end of the second sheet is formed into an inter-end joint structure in the step of forming the attaching and detaching structure portion serving as the inter-end joint structure forming portion. Department of loading and unloading structure. In this way, the exterior body 11 is formed.

Thus, the second sheet forming the exterior body 11 has the same structure as the raw material sheet forming the cloth 1. In other words, the exterior body 11 is provided with a raw material sheet constituting the cloth 1 as a second sheet. Further, in the disposable shorts 10 shown in the example of FIG. 8, the elastic direction of the exterior body 11, that is, the second direction of the selection direction is selected as the elastic direction of the cloth 1. In this case, in the step of forming the exterior body 11, the following steps are carried out. In other words, the plurality of second elastic members are stretched in the second sheet, and the plurality of second elastic members are joined in the selection direction. Further, the second elastic member is released from the stretched state, and the second sheet is loaded with the restoring force of the plurality of second elastic members, and is formed by the concave portion and the convex portion which are alternately arranged along the selection direction. The second uneven line forms a plurality of rows in a direction intersecting the selection direction, whereby the second pleat is formed in the second sheet.

The disposable shorts 10 are formed by arranging the absorbent body 14 at a predetermined position in which the outer casing 11 is thus formed.

The present invention is not limited to the above, and various modifications and/or combinations are possible. For example, the arrangement of the linear elastic body 5a is not limited to being linearly elongated in the X direction, and may be an intermittent linear elastic body 5a or a curved curved elastic body 5a. The linear elastic bodies 5a having a curved shape are arranged in a side by side arrangement, and the linear elastic bodies 5a having a curved shape may be arranged in an irregular arrangement. In the arrangement of the plurality of linear elastic bodies 5a, each of the linear elastic bodies 5a may be a combination of the linear elastic bodies 5a having different expansion ratios. The elastic member 5 is not limited to the linear form, and may have a sheet shape having a predetermined gas permeability by providing a plurality of holes or slits. Elastomer. Further, in the present embodiment, the absorber 14 is detachably attached to the exterior body 11. However, the absorber 14 may be fixedly attached to the exterior body 11. Further, in the present embodiment, the fabric 1 (first sheet) on which the surface material 15 is formed is obtained by laminating the first fiber sheet 2, the third fiber sheet 4, and the second fiber sheet 3. The configuration in which the laminated sheet is added with the elastic member 5 has been described, but the present invention is not limited thereto. For example, the fabric 1 (first sheet) on which the surface material 15 is formed may be configured by adding the elastic member 5 to the laminated sheet obtained by laminating the first fiber sheet 2 and the third fiber sheet 4.

The contents of the US Provisional Application No. 62/277,923 filed on January 12, 2016, and the contents of the US Provisional Application No. 62/294,983 filed on February 12, 2016, and 2016 The disclosure of the specification, drawings, and abstract included in the Japanese application of Japanese Patent Application No. 2016-191294, filed on Jan. 29, is hereby incorporated by reference.

10‧‧‧Disposable shorts

11‧‧‧Outer body

12‧‧‧ Waist wearing department

13‧‧‧ face fasteners

14‧‧‧Acceptor

15‧‧‧Surface

16‧‧‧Regulatory Department

Claims (10)

A disposable article comprising: an absorbent body having an absorbent core absorbing body fluid; a surface material covering the absorbent core; and a back sheet covering the absorbent core opposite to the surface material And an exterior body that can join the absorber; and the disposable article has a first sheet material and a first elastic member, the first sheet having gas permeability, the first sheet (1) The elastic member is joined to the first sheet in the first direction so as to have elasticity in a first direction defined in a predetermined direction, and the first pleat is formed on the surface material. The pleat portion is formed by arranging a plurality of rows of the plurality of concave portions and the convex portions alternately arranged in the first direction in a direction intersecting with the first direction, and forming the first pleat portion The concave portion and the convex portion are formed to be deformable in accordance with the elastic force of the first elastic member joined to the first sheet, and the outer casing has the second sheet and has a second elastic member, and the second sheet Material has gas permeability, the second elasticity The member is joined to the second piece in the selection direction such that the outer body has elasticity in a direction selected from the first direction and the second direction defined in a predetermined direction different from the first direction. A second pleat portion is formed in the outer casing, and the second pleat portion is formed by intersecting the plurality of concave portions and the convex portions alternately arranged in the selection direction with respect to the selection direction. The plurality of rows are arranged in the direction, and the concave portion and the convex portion forming the second pleat portion are formed so as to be deformable in accordance with the expansion and contraction force of the second elastic member joined to the second sheet. For example, in the disposable article of claim 1, wherein the selection direction is the second direction. The disposable article according to claim 1 or 2, wherein the one end of the outer casing is provided with a detachable structure portion detachably joined to the other end of the outer casing. The disposable article according to any one of claims 1 to 3, wherein the absorbent body is formed with a contact portion for contacting the absorbent core with the surface material, and a surface is formed at a predetermined portion of the contact portion. a material bonding structure, wherein the absorbent core body and the surface material are more firmly in contact with each other than the predetermined portion of the contact portion, and the surface material bonding structure is formed along the first direction And having a bonding structure of the above-mentioned absorbent core and the above-mentioned surface material, or an extrusion structure of the above-mentioned surface material and the above-mentioned absorbent core. The disposable article of any one of claims 1 to 4, wherein the first sheet has a laminated structure of non-woven fabric and paper. A method for producing a disposable article, comprising: an absorbent body having an absorbent core for absorbing body fluid, a surface material having a first sheet covering the absorbent core, and opposite to the surface material a back sheet covering the absorbent core; and an outer body having a second sheet to which the absorbent body is joined; and the method of manufacturing the disposable article comprising the steps of: forming the surface The surface material includes the first sheet material and has elasticity in a first direction defined in a predetermined direction, and the outer body includes the outer sheet, and the outer sheet includes the outer sheet. When the surface material is joined to the surface material, it has elasticity in a direction selected from the second direction defined in the predetermined direction and the first direction so as to be different from the first direction; and the surface material is formed. In the step, the first elastic member is stretched in the first sheet, and the first elastic member is joined in the first direction, and the stretched state of the first elastic member is released, and the first sheet is removed. The material is loaded with the restoring force of the first elastic member, and the first uneven line formed by the concave portion and the convex portion alternately arranged in the first direction forms a plurality of rows in a direction intersecting the first direction, thereby The first sheet is formed with the first pleat portion, and in the step of forming the outer body, the second elastic member is stretched in the second sheet, and the second elastic member is joined in the selected direction. And releasing the stretched state of the second elastic member, wherein the second sheet is loaded with the restoring force of the second elastic member, and the second uneven portion formed by the concave portion and the convex portion alternately arranged in the selection direction is on The plurality of rows are formed in the direction in which the selection directions intersect, whereby the second pleats are formed on the second sheet. The method for producing a disposable article according to claim 6, wherein in the step of forming the surface material, the first sheet is formed by laminating a nonwoven fabric with paper. The method for producing a disposable article according to claim 6 or 7, further comprising the step of forming a shape in which both side edges of the first sheet are bent toward the center of the first sheet in a plan view. The method of manufacturing a disposable article according to any one of claims 6 to 8, further comprising forming one end of the second sheet of the outer casing to form a detachable contact with the second sheet The step of attaching the detachable structure portion to the other end. The method of manufacturing a disposable article according to claim 9, wherein in the step of forming the detachable structure portion, both end portions of the second sheet are bent to form a bent portion, and are formed on one end side The bent portion is provided with a joint structure forming body that is detachably joined to the bent portion formed on the other end side.