WO2015151347A1

WO2015151347A1 - Pull-up wearing article

Info

Publication number: WO2015151347A1
Application number: PCT/JP2014/083109
Authority: WO
Inventors: 邦彦桂川; 賢一笹山; 守大尾
Original assignee: ユニ・チャーム株式会社
Priority date: 2014-03-31
Filing date: 2014-12-15
Publication date: 2015-10-08
Also published as: JP2015195801A

Abstract

Provided is a pull-up wearing article, the size of which is easily adjustable and which is configured so that the transverse leakage of bodily fluid does not occur. A pull-up wearing article (10) includes a size adjustment means (12) located in the waist region of either a front or back waist region (13, 14). The size adjustment means includes: an affixed section (53) affixed to the non-skin-facing surface side of a chassis (11) and located at the center, in the transverse direction, of the either the front or back waist region (13, 14); and a pair of free sections (54) located on the outside transversely of the affixed section. The free sections have adhesion regions (56) adherable to the non-skin-facing surface of the chassis; and elastically extendible and contractible elastic sections (58) located between the affixed section and the adhesion regions.

Description

Pants-type wearing article

The present disclosure relates to pant-type wearing articles, and more particularly to pant-type wearing articles such as disposable incontinence pants, disposable toilet training pants, disposable diapers and the like that include adjustable-size means.

2. Description of the Related Art Conventionally, a pant-type wearing article including a size adjusting means for adjusting a waist size or the like is known. For example, in Patent Document 1, in a pants-type wearing article, a fixing portion fixed to a waist area of a pants-type chassis and a free portion having a fastening area that can be fastened to a non-skin facing surface of the chassis A wearable article is disclosed which includes resiliently non-elastic sizing means.

JP 2008-80026 A

In the wearing article disclosed in Patent Document 1, the stretching stress of the waist opening and the leg opening is set to be relatively low, and when worn, the leg opening and the waist opening can be easily expanded to allow the wearer to insert the leg. After wearing, the size adjustment means can narrow the waist of the worn article to fit the wearer's body. However, the extension stress of the opening is set low, and at the portion whose length is adjusted by the size adjusting means, the chassis is contracted and the contraction force of the opening is further reduced. Therefore, for example, when the posture of the wearer changes, such as in the standing state and lying position, a gap is likely to be generated between the body and the opening, which causes leakage of the body fluid. Particularly in the lying state, it can be said that such a gap is easily formed between the worn article and the buttocks of the wearer.

The object of the present invention is an improvement of the prior art, and it is an object of the present invention to provide a pants-type wearing article which is adjustable in size and which can prevent lateral leakage of body fluid.

The present invention has a longitudinal direction and a lateral direction, a non-skin opposing surface located on the skin opposing surface and the opposite side, a front waist region, a rear waist region, and a crotch region located between the front and rear waist regions. A chassis, size adjusting means positioned in one of the front and rear waist regions, and a waist opening and a pair of leg openings defined by seams connecting both side edges of the front and rear waist regions An improvement of a pants-type wearing article having

In the wearable article according to the present invention, the size adjusting means is fixed to the non-skin facing surface side of the chassis, and the fixing portion is positioned on the central side in the lateral direction of the one waist area; A fixing area which can be fixed to the non-skin facing surface of the chassis, the fixing area, and the fixing area; And an elastically stretchable elastic portion.

According to the pants-type wearing article according to the present invention, the size adjustment of the wearing article can be performed by the size adjusting means including the fixing part and the pair of free parts having the fastening area. In addition, since the pair of free parts is located on the outer side in the lateral direction of the fixed part and has an elastically expandable elastic part between the fixed part and the fastening part, after the size adjustment The contraction force of the elastic portion can fit the opening to the wearer. Furthermore, even if the wearer is in a lying position, the pair of elastic portions can be applied to the buttocks of the wearer in a state in which the central portion of the chassis is pulled and expanded in the lateral direction to prevent lateral leakage of body fluid. be able to.

The drawings illustrate specific embodiments of the present invention and include not only the essential features of the invention, but also optional and preferred embodiments.
The front view of the underpants-type disposable diaper shown as an example of the underpants-type wearing article concerning the present invention. The expansion | deployment top view of the diaper extended longitudinally and laterally until the time of maximal expansion of each elastic body (The extent to which the gathers by the contraction effect of an elastic material are lose | eliminated). The partially broken exploded perspective view of a diaper. The partially broken enlarged view which looked at the area | region enclosed with the dashed-dotted line IV shown in FIG. 2 from the back surface side. FIG. 5 is a schematic cross-sectional view along the line V-V in FIG. 4. (A) The figure which shows the mode of the wearing condition of the diaper before size-adjustment by size adjustment means. (B) The figure which shows the mode of use condition of a size adjustment means. The figure which shows a part of manufacturing process of a diaper. The figure similar to FIG. 4 which shows other embodiment of a diaper. FIG. 9 is a schematic cross-sectional view taken along the line IX-IX in FIG. The front view which shows other embodiment of a diaper.

First Embodiment
The following embodiments relate to the pants-type wearing article shown in FIGS. 1 to 6 and include not only the essential configuration of the invention but also optional and preferable configurations. In FIGS. 2, 4 and 5, each elastic body to be described later is in a state of being stretched to such an extent that gathers due to the contraction force in the transverse direction X and the longitudinal direction Y are resisted against the contraction force.

With reference to FIGS. 1 to 3, a pants-type disposable diaper 10, which is an example of a pants-type wearing article according to a first embodiment of the present invention, has a longitudinal center line P and its length that bisects the width dimension thereof. It has a lateral center line Q which bisects the dimension, a longitudinal direction Y along the longitudinal center line P, and a lateral direction X along the lateral center line Q, and is a skin opposing surface and a non-skin opposing surface located opposite thereto And a size adjustment band (size adjustment means) 12 disposed on the non-skin facing surface of the chassis 11.

<Chassis>
The chassis 11 is formed symmetrically with respect to the longitudinal center line P, and has a front waist region 13, a rear waist region 14, and a crotch region 15 located between the front and

rear waist regions

13, 14; An annular elastic waist panel extending around the waist defining 13, 14; and a liquid-absorbent panel 17 extending from the crotch region 15 to the front and

rear waist regions

13, 14 and attached to the skin-facing side of the elastic waist panel including. In the present embodiment, the size adjustment band 12 is disposed in the front waist area 13 of the chassis 11. However, as long as the effects of the present invention described later can be obtained, it may be disposed not in the front waist region 13 but in the rear waist region 14.

<Elastic waist panel>
Referring to FIG. 2, the elastic waist panel includes a front waist panel 18 located in the front waist region 14 and a rear waist panel 19 located in the rear waist region 14. The front and

rear waist panels

18, 19 intersect the front and rear end portions 17A, 17B of the liquid-absorbent panel 17, and extend in the lateral direction X with middle

inner edges

18a, 19a, and in the longitudinal direction Y with middle

inner edges

18a, 19a

Outer edges

18b and 19b extending in the lateral direction X apart from each other, both

outer edges

18c and 19c extending in the longitudinal direction Y from the

outer edges

18b and 19b, both

outer edges

18c and 19c, and middle inner edge 18a, It is formed in a substantially trapezoidal shape by concave

inner edges

18d and 19d connecting with 19a. The front and

rear waist panels

18 and 19 respectively have

central portions

20A and 21A in which the liquid absorbing panel 17 is disposed in the lateral direction X, and both

side portions

20B and 21B located on the outer side in the lateral direction X of the liquid absorbing panel 17 Have. Both the outside edges 18c of the front waist panel 18 and the both outside edges 19c of the rear waist panel 19 overlap each other and are connected by the seam portion 22 intermittently extending in the longitudinal direction Y to form the waist opening 23 and the pair of A leg opening 24 is defined. At the seam portion 22, the overlapping sheets are fused by embossing by heat or ultrasonic waves. In the present embodiment, the front and

rear waist regions

13 and 14 have their side edges connected by the seam portion 22.

Referring to FIG. 3, the front and

rear waist panels

18 and 19 include

inner layer sheets

30 and 31 located on the skin facing surface side,

outer layer sheets

32 and 33 located on the clothing facing surface side, and a plurality of strips extending in the lateral direction X Front and

rear waist elastics

34, 35 formed of string-like or strand-like elastic material and attached shrinkably in a stretched state between the inner and

outer layer sheets

30, 31, 32, 33 via a hot melt adhesive; The rear waist panel 19 further includes a buttock elastic body 36. The buttocks elastic body 36 is formed of a plurality of string-like or strand-like elastic materials extending along the leg opening edge from the rear waist region 14 to the crotch region 15, and the inner and

outer layer sheets

30, 31, 32, 33. Between the two in a stretchable manner via a hot melt adhesive.

Referring to FIG. 2, the front waist panel 18 has a front upper waist elastic area 37 A extending in the lateral direction X on the waist opening edge side and a front lower waist elastic area extending in the lateral direction X on the crotch area 15 side of the front waist area 13 ( A first waist elastic region) 37B. The front upper waist elastic region 37A is located on the outer side in the longitudinal direction Y of the liquid absorbent panel 17, and a plurality of front waist elastic bodies 34 extending continuously between the outer edges 18c are disposed. The plurality of front waist elastic bodies 34 disposed in the front lower waist elastic region 37B overlap the liquid absorbent panel 17 in the lateral direction X, and the front waist elastic bodies in a portion overlapping the liquid absorbent panel 17 in plan view An inelastic area is formed where 34 is not disposed.

The rear waist panel 19 has a rear upper waist elastic region 38A extending in the lateral direction X on the waist opening edge side and a rear lower waist elastic region (second waist elastic region) extending in the lateral direction X on the crotch region 15 side of the rear waist region 14 38B and a heel elastic region 38C located in the crotch region 15. The rear upper waist elastic region 38A is located on the outer side in the longitudinal direction Y of the liquid absorbent panel 17, and a plurality of rear waist elastic bodies 35 extending continuously between the outer edges 19c are disposed. A plurality of rear waist elastics 35 and a part of the plurality of hip elastics 36 located in the rear waist region 14 are disposed in the rear lower waist elastic region 38B. The rear waist elastic body 35 disposed in the rear lower waist elastic region 38B overlaps the liquid absorbent panel 17 in the lateral direction X, and the rear waist elastic body 35 is disposed at a portion overlapping the liquid absorbent panel 17 in plan view. An inelastic area is formed. The buttocks elastic area 38C is located in the crotch area 15, a plurality of barbs elastic bodies 36 are disposed, and in a region where the absorbent panels 17 overlap in plan view, there is a non-elastic area where the buttocks elastic bodies 36 are not arranged. It is formed. In each inelastic area located in the front and

rear waist areas

13 and 14, in addition to the fact that the waist elastics constituting the elastic areas located on both sides thereof are cut or removed, the contraction force is not substantially expressed. Including the case where a part is arranged in the following manner.

The various sheets constituting the front and

rear waist panels

18 and 19, ie, the inner and

outer layer sheets

30, 31, 32 and 33, are hydrophobic spunbonded nonwoven fabrics or SMS (spunbonded, meltblown, SMS) having a weight of about 15 to 30 g / m ^2. It can be formed from a spunbond) fiber cloth, a plastic film, or a laminate sheet with at least one of these non-woven fabrics. The sheets laminated to each other are joined by a known bonding means of a hot melt adhesive intermittently applied to at least one of the inner surfaces.

The front and

rear waist elastics

34, 35 and the buttocks elastic 36 have a string shape or a strand shape having a fineness of about 350 to 1250 dtex and being stretched about 1.8 to 3.5 times from a contracted or relaxed state It can be made of an elastic material. However, the fineness and expansion ratio of each elastic body can be appropriately changed according to the required contraction force and expansion stress. By arranging the front and rear waist elastics 34 and 35 in the front and

rear waist regions

13 and 14, a plurality of gathers 40 are formed on the outer surface, and are gathered as a whole.

<Liquid-absorbent panel>
Referring to FIG. 2, the absorbent panel 17 has a vertically long, substantially rectangular shape, and is connected to the front end portion 17A connected to the skin facing surface of the front waist panel 18 and to the skin facing surface of the rear waist panel 19. And a middle portion 17C which extends in the longitudinal direction Y between the front and rear end portions 17A and 17B and which forms a part of the crotch region 15.

With reference to FIGS. 2 and 3, the absorbent panel 17 has an absorbent structure 41 having a liquid-permeable body-side liner 47 and an absorbent body covered with the liquid-permeable body, and the coating-facing side of the absorbent body. And a hydrophobic covering sheet 42 located at The body side liner 47 can be formed of, for example, a hydrophilized spunbond non-woven fabric, an SMS non-woven fabric or the like having a weight of about 15 to 25 g / m ² . The absorbent body has a weight of about 10 to 20 g / m ² covering the whole of the absorbent core 48 and the absorbent core 48 formed of an absorbent / discrete material such as fluff wood pulp or superabsorbent polymer particles. A liquid permeable core wrap sheet (not shown) formed of tissue paper or the like. The covering sheet 42 is formed of a hydrophobic SMS fiber non-woven fabric, a spunbonded non-woven fabric or the like having a weight of about 10 to 20 g / m ² . Between the covering sheet 42 and the liquid absorbing structure 41, a leakproof sheet 43 formed of a plastic film having a mass of about 10 to 25 g / m ² and having air permeability is disposed. Both side portions of the liquid absorbent structure 41 are bent inward, and a plurality of strand-like or string-like leg elastic bodies 44 extending in the longitudinal direction Y are attached in an expandable state in a contractible manner.

Both side portions of the covering sheet 42 are bent inward, and the front and rear end portions thereof are fixed on the liquid suction structure 41 via the bonding portion 45. On both sides, a plurality of strings or strands extending in the longitudinal direction Y and having a fineness of about 400 to 800 dtex and being stretched about 2.0 to 3.0 times from the contracted or relaxed state A cuff elastic 46 formed of an elastic material is disposed. In the wearing state of the diaper 10, the both sides form a barrier cuff which stands up to the body side of the wearer by the contraction action of the cuff elastic body 46.

<Size adjustment band>
1 and 3 to 5, the size adjustment band 12 has an inner surface 51 facing the non-skin facing surface of the chassis 11 and an outer surface 52 on the opposite side, and a length direction R and a width direction S orthogonal to each other. A substantially rectangular strip defined by a pair of

outer edges

12a and 12b opposed to each other in the length direction R and both side edges 12c and 12d extending along the length direction R between the

outer edges

12a and 12b Have. The size adjustment band 12 extends from the fixed portion 53 to the

outer edge

12a, 12b from the fixed portion 53 which is fixed to the non-skin opposing surface of the chassis 11 at the central portion 20A of the front waist region 13 via the bonding portion 60. And a pair of free parts 54. The size adjustment band 12 is formed symmetrically with respect to the vertical axis P, and in FIGS. 4 and 5, only the fixing portion 53 and the free portion 54 located on one side in the lateral direction X of the size adjustment band 12 will be described. However, the fixed portion 53 and the free portion 54 located on the other side have the same configuration. In the present embodiment, the fixing portion 53 is formed of a continuous sheet member connecting the pair of free portions 54. For example, the sheet member forming the size adjustment band 12 is separated at the central portion 20A, It may be configured of a pair of fixed portions 53 and free portions 54 which are separated in the direction X.

The free portion 54 is connected to the fixed portion 53 and has an elastic portion 58 elastically extendable in the length direction R (in the lateral direction X in the present embodiment), and the side of the

outer edge

12a, 12b from the elastic portion 58. And a grip portion 57 (outer end 54a) extending to the end. The elastic portion 58 may be configured so that at least a portion can elastically expand and contract between the fixed portion 53 and the grip portion 57, and the whole may not be elastically expanded and contracted. The fixing portion 53 and the free portion 54 are attached to the strip sheet 64 formed of one or a plurality of sheet members, which extend in series in the length direction R and form the outer shape of the size adjustment band 12. And a band elastic body 63 for giving elasticity to the portion 58. In the present embodiment, the belt-like sheet 64 includes an inner sheet 61 facing the non-skin facing surface of the chassis 11 and an outer sheet 62 facing the outer surface of the inner sheet 61. 62 are joined via a hot melt adhesive (not shown) applied to either of their opposite sides. In the present embodiment, the “elastic portion 58” means the region where the band elastic body 63 is disposed, and does not mean the region where the contraction force acts. Therefore, both side edges of elastic portion 58 are positioned inward from both side edges 12 c and 12 d of size adjustment band 12, and width dimension W 3 of elastic portion 58 becomes smaller than width dimension W 2 of size adjustment band 12. ing.

The inner and

outer sheets

61 and 62 constituting the strip sheet 64 are known fiber non-woven fabrics, for example, spunbonded non-woven fibers of about 10 to 40 g / m ² , preferably about 15 to 30 g / m ² , SMS fiber non-woven fabrics And air through fiber non-woven fabric. The band elastic body 63 has a string size or a strand shape extending in the length direction R, having a fineness of about 400 to 1200 dtex, and being stretched about 1.5 to 3.0 times from a contracted or relaxed state Formed of an elastic material. However, the fineness and expansion ratio of each elastic body can be appropriately changed according to the required contraction force and expansion stress. In the present embodiment, the band elastic body 63 is disposed in such a manner that a part of the fixing portion 53 does not substantially develop a contraction force, and the band elastic body 63 is substantially at the outer end 54 a of the free portion 54. It is arrange | positioned in the aspect which does not express contraction force, and the outer end part 54a has inelasticity. The band elastic body 63 may not be disposed at the fixing portion 53 or the outer end portion 54a. Further, the band elastic body 63 may be formed of a belt-like elastic sheet, or the belt-like sheet 64 may be formed of an elastic sheet, and the fixing portion 53 and the grip portion 57 may be inelasticized.

A tab sheet 57a formed of a relatively rigid fibrous non-woven fabric or a plastic film is disposed on the belt-like sheet 64 in the grip portion 57, and the outer surface of the tab sheet 57a (the surface facing the front waist region 13) is disposed. , Stop area 56 is arranged. The tab sheet 57a can be colored so that the grip portion 57 can be distinguished from other regions. The fastening area 56 is a hook group of mechanical fasteners that can be fastened to the

outer layer sheets

32, 33 forming the outer surface of the front and

rear waist areas

13, 14 or the receiving portion (loop group of mechanical fasteners) disposed on the outer surface. Have. The fastening zone 56 can also be formed from a pressure sensitive adhesive in addition to the hooks of mechanical fasteners.

The length dimension (dimension in the lateral direction X) L1 of the size adjustment band 12 is about 500 to 600 mm, and is formed substantially equal to the dimension W1 in the lateral direction X in the front waist region 13 of the chassis 11. The width dimension (dimension in the longitudinal direction Y) L2 of the front waist region 13 is about 150 to 250 mm, and the width dimension (dimension in the longitudinal direction Y) W2 of the size adjustment band 12 is about 20 to 100 mm. The length dimension L1 of the size adjustment band 12 can also be formed longer or shorter than the dimension W1 of the chassis 11.

Referring to FIG. 4, the fastening area 56 extends in the longitudinal direction Y between the side edges 12 c and 12 d of the size adjustment band 12, and the width dimension thereof is the same as the width dimension W 2 of the size adjustment band 12. Therefore, the width dimension of the fastening area 56 is larger than the width dimension W3 of the elastic portion 58 located inward from the side edges 12c and 12d, and the both

end edges

56a and 56b are the side edges 58a of the elastic portion 58. , 58b are located outside in the width direction S. Thus, by positioning both

end edges

56a and 56b of fastening area 56 outside width direction S from both

side edges

58a and 58b of elastic portion 58, both side edges 12c, It is possible to suppress that 12 d is curled up by the contraction action of the elastic portion 58.

The fastening area 56 is preferably fastened to the non-skin facing surface of the chassis 11 forming the front waist area 13 in a state where the diaper 10 is taken out of the package. Further, during the manufacturing process of the diaper 10, the portion where the fastening area 56 or the pinching portion 57 is located may be temporarily fixed to the non-skin facing surface of the chassis 11 by heat sealing or the like. Referring to FIG. 5, the diaper 10 is temporarily fixed to the chassis 11 at the holding portion 57 via the bonding portion 59. Thus, by fastening or temporarily fastening the fastening area 56 or the grip portion 57, there is a risk that the fastening area 56 may touch the wearer's body to stimulate when the size adjustment band 12 is not in use. In addition, it is possible to prevent the size adjustment band 12 from being twisted while the diaper 10 is being transported. In addition, the relatively rigid tab sheet 57a is disposed in the pinching portion 57, so that it is easy to operate when pinching the pinching portion 57, compared with the case where the tab sheet 57a is not disposed. Excellent. Furthermore, at the outer end portion 54a of the free portion 54, since the band elastic body 63 is disposed in a state in which the contraction force is not substantially developed, the grip portion 57 has inelasticity. Therefore, in a state where the size adjustment band 12 is pulled and the fastening area 56 is fastened to the outer surface of the rear waist area 14 or the crotch area 15, the contraction force of the band elastic body 63 in the fastening area 56, ie, the fastening area 56 The force (forward force) to peel off is not directly acted on, and is stably fixed as compared with the case where the holding portion 57 has elasticity.

Referring to FIGS. 6 (a) and 6 (b), for example, in the case of a slender wearer, when the waist and / or legs of the wearer are smaller by one turn than the corresponding dimensions of the diaper 10, the size adjustment is made. When the band 12 is used, first, a finger is inserted between the side edge of the diaper 10 and the

outer edge

12a, 12b of the size adjustment band 12, the pinching portion 57 is pinched, and the fastening by the fastening area 56 is released. To pull outward of the diaper 10 (see phantom line in FIG. 5). Next, with the holding portion 57 held in a pulled and pulled state, that is, with the elastic portion 58 kept in an extended state, the fastening area 56 is directed toward the rear waist area 14 (or the crotch area 15). Pull on and fasten to the outer surface. Thus, when the size adjustment band 12 is pulled backward, the front end portion of the liquid-absorbent core 48 where the fixing portion 53 is located is pulled backward, and the both side portions 20B of the front waist region 13 are contracted. That is, since the fastening area 56 is fastened to the rear waist area 14 in a state where the relatively high rigidity liquid absorbing core 48 is pulled backward, a part of the relatively low rigidity side portion 20B is Together, the lateral dimension X decreases. Thereby, the dimensions around the waist of the diaper 10 become smaller and fit around the waist of the wearer a little smaller. Further, by pulling the size adjustment band 12 and fixing it to the rear waist region 14 in a state in which the elastic force of the elastic portion 58 works, the central portion 20A where the liquid absorbing core 48 is positioned is pulled backward with a strong force. It can be fitted to the body stably.

Further, since the size adjustment band 12 is disposed on the crotch region 15 side of the front waist region 13, the central portion 20A at which the liquid-absorbent core 48 is located is pulled back to the side of the leg opening 24. The dimensions are also reduced to fit the wearer's body.

In this state, when the free portion of the size adjustment band does not have elasticity, when the posture of the wearer changes, the fastening by the fastening area is released and the waist opening edge or the leg opening edge There is a risk that there will be a side leakage of fluid from the leg openings, particularly when the wearer is in a lying position. In the diaper 10 according to the present invention, when the free part 54 of the size adjustment band 12 has elasticity, a force or size adjustment band 12 for removing the attachment by the attachment area 56 which is generated by the change of the posture of the wearer. It is possible to absorb the force to deform itself (force to cause twisting or bending), and to keep the opening edge fitted to the body even if the posture changes during wearing. In addition, by positioning the elastic portion 58 in a relatively wide range of the free portion 54, in cooperation with the front lower waist elastic region 37B and the rear lower waist elastic region 38B, the fit of the diaper 10 to the body can be obtained. It can be improved.

In addition, the fixing portion 53 of the size adjustment band 12 is located on both side edges of the liquid absorbent core 48, and when the size adjustment band 12 is pulled backward, the both sides edge of the liquid absorbent core 48 is pressed against the body Since it can be expanded in the lateral direction X in the state as it is, even if the absorbent core 48 is formed with a gather that reduces its liquid absorbability, it is stretched and the liquid absorption area is expanded. Liquid absorption can be improved. In particular, since the pair of free parts 54 extends in opposite directions with respect to the fixed part 53, the size adjustment band 12 pulls the pair of free parts 54 located on both sides 20B in opposite directions (left and right). Since both side edges of the absorbent core 48 in which the fixing portion 53 is positioned are pulled to the left and right, the whole of the absorbent core 48 in the lateral direction X as compared to the case where only one side edge is pulled backward. It can be expanded.

In order to exert such an effect, the size adjustment band 12 is preferably disposed on the leg opening 24 side in the front waist region 13, and its side edge 12 d is close to the lower edge (both inner edges 18 d) of the front waist region 13 or More preferably, they are arranged to overlap. As described above, by arranging the size adjusting band 12 on the leg opening 24 side, the leg opening edge can be easily fitted to the wearer's body, and side leakage from the leg opening 24 can be prevented, in particular The chassis is positioned between the leg opening 24 and the sizing band 12 such that the sizing band 12 is closer to the leg opening 24 by positioning the side edge 12 d close to or overlapping the lower edge of the front waist region 13. This is because the entire leg opening edge can be more fitted to the body, including the 11 frilled portions.

In addition, in a state in which the fastening area 56 of the size adjustment band 12 is fastened to the outer surface of the rear waist area 14, the contracting action of the elastic portion 58 on both side portions 21B of the rear waist area 14 where the fastening area 56 is located. The forward force acts on the front end, so that the entire rear end of the liquid absorbent core 48 located at the central portion 21A of the rear waist area 14 is expanded in the lateral direction X to maintain and improve its liquid absorption performance. Can. Furthermore, when the fastening area 56 is positioned to overlap the side edges of the rear end of the liquid absorbent core 48 in plan view, the rear end is pressed against the body, so the rear end is misaligned. Can be suppressed.

It is preferable that the extension stress N1 in the longitudinal direction R of the elastic portion 58 of the size adjustment band 12, that is, in the lateral direction X is set higher than the extension stress N2 in the lateral direction X of the front lower waist elastic region 37B. In addition, in the wearing state of the diaper 10, the extension stress N3 in the lateral direction X of the rear lower waist elastic region 38B facing the front lower waist elastic region 37B (back and forth) is set higher than that of the front lower waist elastic region 37B Is preferred. Specifically, the extension stress N1 of the elastic portion 58 is 2.0 to 3.5 N, the extension stress N2 of the front lower waist elastic region 37B is 0.3 to 0.7 N, and the rear lower waist elastic The tensile stress N3 in the region 38B is formed to 1.2 to 2.6N. The extension stress N1 of the elastic portion 58 and the extension stress of the rear lower waist elastic region 38B are preferably set to the same degree, and the difference between the extension stresses N1 and N3 is preferably 0.1 to 1.0 N. In the correlation between the extension stress N1 and the extension stress N2, by setting the extension stress N2 relatively low, the leg opening 24 is formed relatively large when wearing the diaper 10 and it is easy to pass the leg On the other hand, since the elastic portion 58 having the extension stress N1 higher than the extension stress N2 fits the leg opening edge to the body together with the front lower waist elastic region 37B, the fit can be further improved. Also, if there is a large stress difference between the extension stress due to the elastic region of the front waist region 13 and the extension stress N3 in the rear waist region 14 at both side portions 20B, for example, the front side has higher extension stress than the rear side. When the diaper 10 is pulled to the front side, both side edges of the diaper 10 at which the seam portion 22 is located may be biased to the front side, and the entire diaper 10 may be displaced. Therefore, by setting at least the extension stress N1 of the elastic portion 58 and the extension stress N3 of the rear lower waist elastic region 38B to the same degree, the balance of the extension stress around the waist in the front and back is maintained to obtain a stable wearing feeling. it can.

In a wearable article provided with a conventional size adjustable fastening tape, if the fastening tape is not elastic, no gathers will be formed on its outer surface. Therefore, by locating on the outer surface of the chassis in which a plurality of gathers are formed by each waist elastic body, a sense of unity in appearance is lost, and by the presence of the fastening tape, it is a disposable diaper rather than underwear. It is easily recognized. In the diaper 10 according to the present embodiment, a plurality of gathers by the elastic portion 58 are formed on the outer surface of the size adjustment band 12, so the entire diaper 10 has a sense of unity in appearance. In particular, by arranging a plurality of string-like or strand-like elastic bodies in the elastic portion 58 in the same manner as the waist elastic body, a sense of unity in appearance is more in comparison with the case where the elastic sheet is arranged. You can get Thus, by having a uniform appearance on the whole of the diaper 10, the satisfaction that a more underwear-like wearing article is worn is obtained, and the mental support for living more actively is obtained. Play a role in

FIG. 7: is a part of manufacturing process of the diaper 10 concerning 1st Embodiment, Comprising: The composite panel 100 used as the base material of several chassis 11 is conveyed by machine direction MD. The composite panel 100 includes a first composite panel 101 serving as a base of the front waist panel 18 and a second composite panel 102 serving as a base of the rear waist panel 19, and the first and second

composite panels

101 and 102. A continuous elastic body 105 corresponding to the front and rear waist

elastic bodies

34 and 35 is disposed in the interior of the housing. A liquid absorbing panel 17 is intermittently disposed in the machine direction MD on the inner surface of the composite panel 100. The continuous elastic body 105 is formed in a non-bonded state in a region overlapping with the liquid-absorbent panel 17, and the liquid-absorbent structure is obtained by cutting and cutting back the continuous elastic body 105 at a position corresponding to the longitudinal axis P of the diaper 10. A non-shrinkage area is formed at a portion overlapping with the body 41. The first and second

composite panels

101 and 102 sandwich a cutting line 108 which bisects the separation distance between adjacent liquid-absorbent panels 17 and extend through a pair of joint portions (seam portions 22) 107 extending in the cross direction CD. Jointed. The continuous elastic body 105 can be in a joined state or a non-joined state with respect to the first and second

composite panels

101 and 102 between the pair of joined portions 107.

In the composite panel 100, the continuous band 103 which is a base material of the inner and

outer sheets

61 and 62 of the size adjustment band 12 is continuously disposed on the outer surface of the first composite panel 101 in the machine direction MD. The continuous band 103 is joined to the first composite panel 101 at a portion overlapping with the liquid-absorbent panel 17. A continuous band elastic body 104 corresponding to the band elastic body 63 is disposed inside the continuous band 103, formed in a non-bonded state in a region overlapping with the liquid absorbent panel 17, and a position corresponding to the longitudinal axis P of the diaper 10. The continuous band elastic body 104 is cut and cut back to form a non-shrinkage region at a portion overlapping the liquid absorbent structure 41. Further, on the inner surface of the continuous band 103, sheet members forming the grip portion 57 centering on the cutting line 108 are intermittently arranged in the machine direction MD, and on the inner surface of the sheet member, a pair is formed on both sides of the cutting line 108. The fastening zone 56 of the Finally, the composite panel 100 and the continuous band 103 are cut along the cutting line 108 to produce the individual diapers 10. The size adjustment band 12 is fastened to the diaper body in the fastening area 56 and, when cut at the cutting line 108, is thermally fused with a part of both side edges of the diaper body for temporary fastening.

As described above, the continuous band 103 can be attached to the composite panel 100 serving as the base material of the chassis 11 while being conveyed in the machine direction MD, and the diaper 10 provided with the size adjustment band 12 can be continuously manufactured in one cut. Therefore, it can manufacture simply compared with the case where size adjustment band 12 manufactured separately is attached to each manufactured diaper body. Further, at the maximum extension in which the chassis 11 and the size adjustment band 12 are extended in the machine direction MD, that is, in the lateral direction X, the outer edge 12a of the size adjustment band 12 is both

outer edges

18c and 19c of the front and

rear waist regions

13 and 14. , And the diaper 10 can be packaged in a state of being temporarily fixed and being temporarily fixed. In the diaper 10, when removed from the package, the outer edge 12a of the size adjustment band 12 is positioned outside the

outer edges

18c and 19c of the front and

rear waist regions

13 and 14, and the outer edge 12a is worn when worn. There is no risk of touching or stimulating the wearer's body. In addition, even if the outer edge 12a of the size adjustment band 12 is not temporarily fixed to the diaper body, the same effect can be obtained by carrying and packaging in a state in which the fastening area 56 is fixed to the diaper body. it can.

The enlarged view T1 in FIG. 7 shows the side edge of the diaper 10 when the continuous elastic body 105 is joined to the first and second

composite panels

101 and 102 via the hot melt adhesive between the pair of joining portions 107. The enlarged state T2 shows the state of the side edge of the diaper 10 when the continuous elastic body 105 is not joined to the first and second

composite panels

101 and 102 between the pair of joined portions 107. Indicates

Referring to the enlarged view T1, in the case where the continuous elastic body 105 is joined to the first and second

composite panels

101 and 102 via the hot melt adhesive between the pair of joining portions 107, the diaper 10 has a back and forth waist In the

regions

13 and 14, a crease is formed by the front and rear waist elastics 34 and 35 in a portion of the seam portion 22 located in the lateral direction X outside. In the diaper 10, when using the size adjustment band 12, inserting a finger between the side edge of the diaper 10 and the

outer edges

12a and 12b of the size adjustment band 12 to make it easy to pick the holding portion 57. Can.

Referring to the enlarged view T2, when the continuous elastic body 105 is not bonded to the first and second

composite panels

101 and 102 between the pair of bonding portions 107, the continuous elastic body 105 corresponds to the position corresponding to the cutting line 108. The diaper 10 is formed by cutting and cutting back so that the portion of the seam portion 22 located outside in the lateral direction X in the front and

rear waist regions

13 and 14 is elastically non-stretchable. In the diaper 10, the portion of the seam portion 22 located on the outer side in the lateral direction X has a sense of unity with the grip portion 57 of the size adjustment band 12 formed non-stretchable, and the presence of the size adjustment band 12 Is not clearly visible, and at first glance it is not recognized as a diaper 10 with a sizing band 12.

<Method of measuring elongation stress>
The elongation stress N1 of the elastic portion 58 was measured by the following method using a tensile tester (INSTRON model: 5564) manufactured by Instron Japan Co., Ltd., with the tensile speed set to 100 mm / min. Cut one free part 54 and the fixed part 53 of the size adjustment band 12 from the diaper 10, and write marks extending in the longitudinal direction Y at the boundary between the fixed part 53 and the elastic part 58 and the elastic part 58 and the grip part 57 Do. The fixed portion 53 and the grip portion 57 are gripped by a pair of chucks along the marked line so that the elastic portion 58 in the marked line is located between the chucks, and the specimen is maximally stretched (gathered by the contraction of the elastic material Measure the length). The test piece after measurement is left in a relaxed state for 24 hours under a 20 ° C. environment, then extended to a length of 85% at maximum elongation with a pair of chucks, and then contracted to a 70% state at maximum elongation The stress per unit width (10 mm width) in the 70% state was measured. It measured similarly about extension stress N2 and N3 of front and back lower waist

elastic field

37B and 38B. In the front and rear lower waist

elastic areas

37B and 38B, a portion overlapping with the test piece of the size adjustment band 12 in plan view (a portion overlapping in the front and rear direction of the wearing state) is cut out to be a test piece. The test piece was held by a pair of chucks and measured so that the overlapping portions in plan view were located between the chucks.

Second Embodiment
8 is a partially enlarged view similar to FIG. 4 according to the first embodiment of the present application, and FIG. 9 is a schematic cross-sectional view taken along the line IX-IX in FIG. The diaper 10 according to the present embodiment has the same basic configuration as that of the first embodiment, so only the differences will be described below.

The size adjustment band 12 in the present embodiment includes a fixing portion 53 and a pair of free portions 54, and the fixing portion 53 and the free portion 54 have a strip sheet 80 formed of a plurality of sheet members. The strip sheet 80 includes an elastically non-elastic non-elastic sheet 81 and an elastic sheet 82 elastically extensible at least in the length direction R. The non-elastic sheet 81 forms the outer surface of the size adjusting band 12 and is formed of a known fiber non-woven fabric, for example, a spunbond non-woven fabric having a weight of about 10 to 40 g / m ² , SMS fiber non-woven fabric or air through fiber non-woven fabric . The elastic sheet 82 is opposed to the non-skin facing surface of the chassis 11 and is formed of a stretchable non-woven fabric containing elastomeric fibers and attached to the non-elastic sheet 81 in a stretched state.

outer edge

12a, 12b from the elastic portion 58. And a grip portion 57 (outer end 54a) extending to the end. The elastic portion 58 may be configured so that at least a portion can elastically expand and contract between the fixed portion 53 and the grip portion 57, and the whole may not be elastically expanded and contracted. In the present embodiment, the elastic sheet 82 is disposed in the fixing portion 53 and the free portion 54 and is de-elasticized in the fixing portion 53 and the holding portion 57, but may be disposed at least in the elastic portion 58.

A fastening area 56 and a grip portion 57 are formed at the outer end portion 54 a in the length direction R of the free portion 54, and in the grip portion 57, the elastic sheet 82 has a relatively high rigidity non-woven fiber or A tab sheet 57a formed of a plastic film is joined, and has rigidity higher than that of the free area 54 where the fastening area 56 is not present, and is formed to be elastically non-stretchable. In addition, instead of the tab sheet 57a, the pressing portion 57 of the elastic sheet 82 is subjected to, for example, pressure treatment or pressure heating treatment by embossing and debossing, and the pressing portion 57 in the longitudinal direction Y and / or the transverse direction X The bending stiffness may be higher than the non-existing area of the fastening zone 56. In the present embodiment, the fixing portion 53 is formed of a continuous sheet member connecting the pair of free portions 54. For example, the sheet member forming the size adjustment band 12 is separated at the central portion 20A, It may be configured of a pair of fixed portions 53 and free portions 54 which are separated in the direction X.

In the diaper 10 according to the second embodiment, fine wrinkles are formed on the inelastic sheet 81 due to the contraction of the elastic sheet 82, so the outer surface of the size adjustment band 12 has a soft touch and the appearance exhibits an undergarment-like texture. . In addition, the presence of the size adjustment band 12 becomes inconspicuous, and a more underwear-like impression can be given to the wearer.

Third Embodiment
FIG. 10 is a front view of the diaper 10 in the third embodiment. The diaper 10 according to the present embodiment has the same basic configuration as that of the first embodiment, so only the differences will be described below.

The diaper 10 which concerns on this embodiment is equipped with a pair of size adjustment band (size adjustment means) 112 spaced apart to the horizontal direction X. As shown in FIG. Each size adjustment band 112 includes an outer edge 112 a and an inner edge 112 b spaced apart in the longitudinal direction R, opposite side edges 112 c and 112 d spaced apart in the width direction S, and a fixing portion 153 fixed to the chassis 11. And a free portion 154 extending from the fixing portion 153 in the longitudinal direction R. Each size adjustment band 112 is disposed obliquely to the longitudinal direction R so that the longitudinal direction R intersects the longitudinal direction Y and the lateral direction X. The fixing portions 153 are respectively overlapped with the side edges of the liquid absorbent core 48 in a plan view. Therefore, as in the other embodiments, by using the size adjustment band 112, the central portion 20A of the front waist area 13 is pulled outward in the lateral direction X, and the diaper is in a state in which the absorbent core 48 is expanded. 10 can be fitted to the wearer's body. In addition, even when the size adjustment band 112 is disposed obliquely to both side edges of the liquid absorbent core 48 as in the present embodiment, it is disposed on the leg opening 24 side of the front waist region 13. Thus, when the fastening area 56 is fastened to the rear waist area 14 or the crotch area 15, the outer dimension of the leg opening 24 can be reduced to bring the leg opening edge into close contact with the wearer's body.

In each of the constituent materials constituting the pants-type wearing article 10 of the present invention, various known materials commonly used in the field of this type may be used without limitation except when the description is made. it can. Further, the front and

rear waist regions

13 and 14 may not be configured as separate sheet members, and the front and

rear waist regions

13 and 14 and the crotch region 15 may be integrally formed. Specifically, the inner and

outer layer sheets

30, 31, 32, and 33 may be formed of a substantially hourglass-shaped sheet member which forms the outer shape of the diaper 10. Also, in the specification and claims, the terms "first" and "second" are used merely to distinguish similar elements, locations, and the like.

The disclosure relating to the present invention described above can be organized at least in the following matters.

Longitudinal direction Y and lateral direction X, non-skin opposing surface located on the skin opposing surface and the opposite side, front waist region 13, rear waist region 14, crotch region 15 located between front and

rear waist regions

13, 14 And a size adjustment band 12 located in one of the front and

rear waist regions

13 and 14 and a seam portion 22 connecting the side edges of the front and

rear waist regions

13 and 14. In the pants-type disposable diaper 10 including the waist opening 23 and the pair of leg openings 24 to be formed, the size adjustment band 12 is fixed to the non-skin facing surface side of the chassis 11 and the lateral direction X of one waist region 13 And a pair of free parts 54 located on the outer side in the lateral direction X of the fixed part 53, and the free part 54 includes the chassis 1. It has a fastened capable fastening zone 56 on the non-skin facing surface, located between the fixing portion 53 and the fastening region 56 and an elastically stretchable elastic portion 58 of the.

The present invention disclosed in the above paragraph 0053 can include at least the following embodiment modes.
(1) The chassis 11 includes the liquid-absorbent panel 17 extending from the crotch area 15 to the front and

rear waist areas

13 and 14, and the fixing portion 53 is positioned so as to overlap the liquid-absorbent panel 17 in plan view.
(2) The chassis 11 includes the leakage preventing sheet 43 extending from the crotch area 15 to the front and

rear waist areas

13 and 14, and the fixing portion 53 is positioned to overlap the leakage preventing sheet 43 in plan view.
(3) The liquid absorbent core 48 further includes the liquid absorbent core 48 extending from the crotch region 15 to the front and

rear waist regions

13 and 14, and the fixing portion 53 is positioned to overlap with the liquid absorbent core 48 in plan view.
(4) The size adjustment band 12 has a pair of side edges 12 c and 12 d extending in the lateral direction X, and the side edge 12 d on the crotch region 15 side of the pair of side edges 12 c and 12 d corresponds to one waist region 13 Are arranged close to or overlapping the lower edge (both inner edges 18d) of
(5) One waist region 13 has a front lower waist elastic region 37 B which is elastically stretchable in the lateral direction X and located between the fixing portion 53 and the seam portion 22. The tensile stress in the lateral direction X of the portion 58 is higher than the tensile stress in the lateral direction X of the front lower waist elastic region 37B.
(6) The other waist region 14 has a rear lower waist elastic region 38B opposed to the front lower waist elastic region 37B in the wearing state, and the extension stress in the lateral direction X of the front lower waist elastic region 37B is the rear lower waist It is lower than the extensional stress in the transverse direction X of the elastic region 38B.
(7) The size adjustment band 12 has the length direction R and the width direction S orthogonal to the length direction R, and the dimension in the width direction S of the fastening area 56 is the width direction S of the elastic portion 58 Larger than the dimensions.
(8) In the size adjustment band 12, the outer end portion 54a of the free portion 58 is elastically non-stretchable.
(9) The fixing portion 53 is a sheet member connecting the pair of free portions 54, and at the time of maximum extension in a state where the chassis 11 and the size adjustment band 12 are extended in the lateral direction X, the outer end edge of the free portion 54 12a and 12b coincide with the side edges (both

outer edges

18c and 18d) of the both side edges of one waist region 13.
(10) The fastening area 56 can be fastened to the non-skin facing surface of the chassis 11 in the other waist area 14.
(11) The outer end portion 54 a of the free portion 54 is formed with the grip portion 57 having a rigidity higher than that of the elastic portion 58.
(12) The elastic portion 58 is formed of an elastic sheet.
(13) The portions located on the outer side in the lateral direction X than the seam portion 22 in the front and

rear waist regions

13 and 14 are elastically non-stretchable.
(14) It packages in the state fixed to the non-skin opposing surface of one waist area 13 of the fastening area 56 of the size adjustment band 12.

10 Pants-type disposable diapers (pants-type wearing articles)
11

Chassis

12, 112 Size adjustment band (size adjustment means)
13 front waist region 14 back waist region 15 crotch region 22 seam portion 48

absorbent core

53, 153 fixed

portion

54, 154 free portion 54a outer end portion 56 fastening region 57 grip portion 58 elastic portion R length direction S width Direction X Horizontal Y Vertical

Claims

A chassis having a longitudinal direction and a lateral direction, a non-skin opposing surface located on the skin opposing surface and the opposite side, a front waist region, a rear waist region, and a crotch region located between the front and rear waist regions; A pant type including size adjusting means positioned in any one of the front and rear waist regions, and a waist opening and a pair of leg openings defined by seams connecting both side edges of the front and rear waist regions. In the wearing item of
The size adjusting means is fixed to the non-skin facing surface side of the chassis, and is positioned at a fixed portion located at the central portion side in the lateral direction of the one waist area, and positioned at the lateral outside of the fixed portion. Containing a pair of free parts
The wearing portion includes a fastening area that can be fastened to the non-skin facing surface of the chassis, and the elastic section that is located between the fastening section and the fastening area and that is elastically stretchable. Goods.
The wearing article according to claim 1, wherein the chassis includes a liquid-absorbent panel extending from the crotch area to the front and rear waist areas, and the fixing portion is positioned to overlap the liquid-absorbent panel in a plan view.
The wearing article according to claim 1 or 2, wherein the chassis includes a leakproof sheet extending from the crotch area to the front and rear waist areas, and the fixing portion is positioned to overlap the leakproof sheet in plan view.
The wear article according to any one of claims 1 to 3, further comprising a liquid-absorbent core extending from the crotch area to the front and rear waist areas, wherein the fixing portion is positioned overlapping with the liquid-absorbent core in plan view.
The size adjustment means has a pair of side edges extending in the lateral direction, and among the pair of side edges, the side edge on the crotch region side approaches or overlaps the lower edge of the one waist region. The wearing article according to any one of claims 1 to 4, which is disposed.
The one waist region is positioned between the fixed portion and the seam portion and has a first waist elastic region which is elastically stretchable in the lateral direction.
The wearing article according to any one of claims 1 to 5, wherein an extension stress in the lateral direction of the elastic portion of the size adjusting means is higher than an extension stress in the lateral direction of the first waist elastic region.
The other waist region has a second waist elastic region opposed to the first waist elastic region in the wearing state, and the extensional stress in the lateral direction of the first waist elastic region corresponds to that of the second waist elastic region. The wearing article according to claim 6, which is lower than the tensile stress in the lateral direction.
The size adjusting means has a length direction and a width direction orthogonal to the length direction, and the dimension in the width direction of the fastening area is larger than the dimension in the width direction of the elastic portion. The worn article according to any one of Items 1 to 7.
The wear article according to any one of claims 1 to 8, wherein the size adjustment means is such that the outer end of the free part is elastically non-stretchable.
The fixed portion is a sheet member connecting a pair of the free portions, and the outer end edge of the free portion is at the maximum extension in the state where the chassis and the size adjusting means are extended in the lateral direction. The wear article according to any one of claims 1 to 9, which coincides with the side edge of the side edge of one waist area.
The wear article according to any one of claims 1 to 10, wherein the fastening area can be fastened to the non-skin facing surface of the chassis in the other waist area.
The wearing article according to any one of claims 1 to 11, wherein a grip portion having a rigidity higher than that of the elastic portion is formed at an outer end portion of the free portion.
The wear article according to any one of claims 1 to 12, wherein the elastic portion is formed of an elastic sheet.
The wear article according to any one of claims 1 to 13, wherein the portion located on the outer side in the lateral direction than the seam portion in the front and rear waist regions is elastically non-stretchable.
The wear article according to any one of claims 1 to 14, packaged in a state in which the fastening area of the size adjusting means is fastened to the non-skin facing surface of the one waist area.