WO2015001826A4

WO2015001826A4 - Underpants-type wearable article

Info

Publication number: WO2015001826A4
Application number: PCT/JP2014/060137
Authority: WO
Inventors: 健島津; 市川　誠; 祐介川上; 唯近藤
Original assignee: ユニ・チャーム株式会社
Priority date: 2014-03-31
Filing date: 2014-04-08
Publication date: 2015-08-06
Also published as: CN105101923B; JP5566550B1; TW201531286A; JP2015195800A; AU2014285564A1; TWI513457B; WO2015001826A1; CN105101923A; AU2014285564B2

Abstract

　Provided is an underpants-type wearable article which can be easily worn, and the rear-waist region of which can be smoothly pulled up.　This underpants-type wearable article (10) has: a first region (71B) in which front-waist elastic bodies (72) are arranged, and which is disposed between the edge of a waist opening (23) and a front end edge (58a) of a liquid-absorbent core; and a second region (73B) in which rear-waist elastic bodies (74) are arranged and which is disposed between the edge of the waist opening and a rear end edge (58b) of the liquid-absorbent core. The first and second regions are positioned so at to face each other in the front-rear direction (Z). The number of rear-waist elastic bodies present in the second region is higher than the number of front-waist elastic bodies present in the first region. The vertical distance between adjacent rear-waist elastic bodies in the second region is shorter than the vertical distance between adjacent front-waist elastic bodies in the first region.

Description

Pants-type wearing article

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

Conventionally, a chassis having a front waist area, a rear waist area, and a crotch area located between the front and rear waist areas and including a liquid absorbent core extending from the crotch area to the front and rear waist areas is provided. Pant-type wearing articles with leg openings are known. For example, Patent Document 1 includes a chassis including a front and rear waist area and a crotch area, and a liquid absorbent core, and in the front and rear waist area, a plurality of string-like or strand-like waist elastic bodies extending in the lateral direction are provided. Disclosed is a wear article disposed in an extensible and contractible state.

In this wearable article, an elastic region (hereinafter referred to as a second elastic region) which is a region outside the longitudinal direction (longitudinal direction) of the liquid-absorbent core and is located between the waist opening edge of the front waist region and the liquid-absorbent core in the longitudinal direction And an elastic area (hereinafter referred to as a second area) opposed to the first area in the front-rear direction and located between the waist opening edge of the rear waist area and the absorbent core in the vertical direction. Have. The separation dimension (pitch) of the adjacent waist elastics in the first region and the separation dimension of the adjacent waist elastics in the second region are set equal. Thereby, the bending stiffness in the longitudinal direction of the first area and the second area is substantially equal.

International Publication WO2004 / 054482

In the wearing article disclosed in Patent Document 1, when the bending rigidity in the longitudinal direction in the first region is set to be relatively low, when the edge of the waist opening is expanded at the time of wearing, in the first region The chassis is bent to make it easy to catch a finger, and the wearing operation is simplified.

On the other hand, in the rear waist region, since the second region has relatively low bending rigidity substantially equal to the first region, the region is bent so that the edge of the waist opening becomes the wearer's thigh and There is a problem that it becomes difficult to pull up due to the difference in level with the buttocks, and if it is pulled up as it is, a so-called "splay" state occurs in a part of the chassis in the second region.

Therefore, the object of the present invention is an improvement of the prior art, and the wearing operation is easy, and the rear waist region can be pulled up smoothly, and so-called "tucks on" a part of the rear waist region. It is in provision of the pants-type wearing article which does not have a possibility of producing a state.

The present invention for achieving the above-mentioned object is characterized in that it is between the longitudinal direction and the lateral direction, the non-skin opposing surface located on the skin opposing surface and the opposite side, the front waist region, the rear waist region and the front and rear waist regions. A chassis having an absorbent core extending from the crotch region to the front and rear waist regions, and a waist opening and a pair of legs defined by connecting both side edges of the front and rear waist regions It is an improvement of the pants-type wearing article including an opening.

According to a first aspect of the present invention, in the above-mentioned worn article, the liquid-absorbent core has a front end edge and a rear end edge extending in the lateral direction so as to face each other in the longitudinal direction. A plurality of front waist elastics attached in a contractable manner in the lateral direction in an extended state between both side edges of the front waist region, the front waist elastics being disposed, and an edge of the waist opening And a first region located between the front end edge of the absorbent core, and the rear waist region is contractible in the lateral direction in an extended state between both side edges of the rear waist region A plurality of attached rear waist elastics, and a second region in which the rear waist elastics are disposed and located between an edge of the waist opening and the rear end of the absorbent core And the first area and the second area are The number of the rear waist elastics in the second region is greater than the number of the front waist elastics in the first region, in the second region. A longitudinal separation dimension of the rear waist elastic bodies adjacent to each other is smaller than a longitudinal separation dimension of the front waist elastic bodies adjacent to each other in the first region.

Further, according to a second aspect of the present invention, in the wearable article, the liquid-absorbent core has a front end edge and a rear end edge extending in the lateral direction so as to be spaced apart and opposed in the longitudinal direction, the front waist The area has a first area located between an edge of the waist opening and the front end edge of the absorbent core and extending over both sides of the front waist area, the rear waist The area has a second area located between the edge of the waist opening and the rear end edge of the absorbent core and extending over the entire area between the opposite side edges of the rear waist area. The first area and the second area are positioned opposite to each other in the front-rear direction of the worn state, and the bending rigidity of the second area in the vertical direction is the bending rigidity of the first area in the vertical direction It is characterized by being higher than that.

According to one or more embodiments of the pants-type wearing article according to the first invention of the present invention, the front waist region is disposed with the front waist elastic body, and the edge of the waist opening and the liquid absorbent core The rear waist region is positioned opposite to the first region in the front-rear direction of the worn state, the rear waist elastic body is disposed, and the waist opening is Having a second region located between the edge and the trailing edge of the absorbent core, the number of rear waist elastics in the second region being greater than the number of front waist elastics in the first region, The longitudinal separation dimension of the rear waist elastic bodies adjacent to each other in the second region is smaller than the longitudinal separation dimension of the front waist elastic bodies adjacent to each other in the first region. Therefore, in the first region, bending rigidity in the longitudinal direction is lower than that in the second region, and when the edge of the waist opening is expanded, the finger is easily hooked on the chassis, and the wearing operation is easy. On the other hand, in the second region, the flexural rigidity in the vertical direction is higher than that in the first region, and the chassis is less likely to be bent, thereby preventing a so-called “slapping” state in a part of the chassis. , The rear waist area can be pulled up smoothly.

According to one or more embodiments of the pants-type wearing article according to the second invention of the present invention, the flexural rigidity in the longitudinal direction of the second region located in the rear waist region is the first one located in the front waist region Higher than the flexural rigidity in the longitudinal direction of the region. Therefore, when the edge of the waist opening is expanded, it is easy to hook a finger on the chassis in the first area, and the wearing operation is easy, and in the second area, the chassis is not easily bent, and a part of the chassis is Can be prevented, and the rear waist can be pulled up smoothly.

The drawings illustrate certain embodiments of the present invention according to the present disclosure and include not only the essential features of the invention, but also optional and preferred embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the disposable diaper in 1st Embodiment shown as an example of the pants-type worn article which concerns on this indication. The partially broken development top view of the diaper extended longitudinally and laterally to the time of maximum expansion of each elastic body (The extent to which the gather by the contraction effect of an elastic body is lose | eliminated). The partially broken exploded perspective view of a diaper. FIG. 2 is a schematic cross-sectional view taken along the line IV-IV in FIG. Top view of the front waist area. Top view of the rear waist region. (A): The perspective view seen from the back side which shows the state at the time of wearing the conventional diaper. (B): A schematic cross-sectional view along the line VIIb-VIIb. (A): The perspective view seen from the back side which shows the state at the time of wearing the diaper shown in FIG. (B): A schematic cross-sectional view taken along line VIIIb-VIIIb. It is the top view which looked at the back waist area from the back side, Comprising: Explanatory drawing which shows the extraction site | part of a test piece. The top view which looked at the back waist area from the back side which shows the modification of a diaper. FIG. 11 is a schematic cross-sectional view taken along the line XI-XI in FIG. The top view similar to FIG. 2 of the diaper in 2nd Embodiment. The disassembled perspective view similar to FIG. 3 of the diaper in 2nd Embodiment.

First Embodiment
The following embodiment relates to the pants-type wearing article shown in FIGS. 1 to 4 which is an example of the present invention, and includes not only the essential constitution of the invention but also selective and preferable constitutions. In FIG. 2, each elastic body described later resists its contraction force and gathers in a member to which each elastic body is attached by the contraction force in the transverse direction X and the longitudinal direction Y is substantially obtained by natural vision. It has been stretched to the extent that it appears to be lost.

1 to 3, a disposable pants-type diaper 10, which is an example of a pants-type wearing article according to the present invention, has a longitudinal direction Y and a transverse direction X orthogonal to one another, It has a skin facing surface, a vertical axis P which bisects the length of the horizontal direction X, and a horizontal axis Q which bisects the length of the vertical direction Y, and is substantially symmetrical with respect to the vertical axis P , A front waist region 11, a rear waist region 12, and a crotch region 13 located between the front waist region 11 and the rear waist region 12.

The diaper 10 comprises a chassis 14 in the form of a base, the chassis 14 having a concave shape on both side edges defining the crotch area 13 and the narrowest part of the crotch area 13 before the transverse axis Q Located to the waist area 11 side. The

front side edges

11a and 11b of the front waist region 11 and the

rear side edges

12a and 12b of the rear waist region 12 have their side edges facing each other in the longitudinal direction Z of the diaper 10 intermittently extend in the longitudinal direction Y The waist openings 23 and the pair of leg openings 24 are defined by being connected by the side seams 22. The side seams 22 fuse the mutually overlapping sheets by known means such as, for example, heat or ultrasonic embossing / debossing.

The chassis 14 is a non-woven fabric base sheet 25 located on the skin facing surface and defining the front and

rear waist areas

11 and 12 and the crotch area 13 in series, and located on the non-skin facing surface side and separated from each other in the longitudinal direction Y It includes opposing front waist sheet 26 and rear waist sheet 27 made of fiber non-woven fabric, and absorbent structure 15 located on the skin facing side of base sheet 25 and extending from crotch region 13 to front and

rear waist regions

11 and 12 .

<Base sheet>
The base sheet 25 has first and

second end edges

25a, 25b spaced apart in the longitudinal direction Y, and

opposite side edges

25c, 25d spaced apart in the lateral direction X. Both

side edges

25c, 25d are straight portions in the front and

rear waist regions

11, 12 and a curved portion in the crotch region 13 that is convexly bent deeper toward the front waist region 11 from the rear waist region 12 side toward the vertical axis P It is formed from

<Front waist seat>
The front waist sheet 26 has a substantially trapezoidal shape forming the front waist region 11 and a part of the crotch region 13 and extends in the longitudinal direction Y with the middle inner end edge 26 a and the outer end edge 26 b extending in the lateral direction X. It is formed of both

outer edges

26c, 26d and both

inner edges

26e, 26f connecting the

outer edges

26c, 26d and the middle inner edge 26a. The both

inner end edges

26e, 26f have a straight portion extending straight in the lateral direction X from the

outer edges

26c, 26d, and a curved portion extending from the straight portion to the middle inner end 26a. The front waist sheet 26 has a bent portion 33 that is bent inward along the waist opening edge. The bent portion 33 is bent inward along the first edge 25 a of the base sheet 25 in a state where the liquid absorbent structure 15 is disposed on the inner surface of the base sheet 25, and the base sheet 25 and the liquid absorbent structure 15 are It is fixed on the skin facing side of

<Rear waist seat>
The rear waist sheet 27 has a substantially trapezoidal shape that forms the rear waist area 12 and a part of the crotch area 13, and extends from the middle inner edge 27a and the outer edge 27b extending in the lateral direction X, and the outer edge 27b. It is formed of both

outer edges

27c, 27d extending in the longitudinal direction Y, and both

inner edges

27e, 27f connecting the

outer edges

27c, 27d and the middle inner edge 27a in a curved shape. The rear waist sheet 27 has a bent portion 38 bent inward along the waist opening edge. The bent portion 38 is bent inward along the second edge 25 b of the base sheet 25 in a state where the liquid absorbent structure 15 is disposed on the inner surface of the base sheet 25, and the base sheet 25 and the liquid absorbent structure 15 are It is fixed on the skin facing side of

With reference to FIGS. 2 to 4, a front waist elastic body 72 extending in the lateral direction X in the front waist region 11 is attached between the front waist sheet 26 and the base sheet 25 in an expandable state so as to be contractible. Between the rear waist sheet 27 and the base sheet 25, a rear waist elastic body 74 extending in the lateral direction X in the rear waist area 12 and a hip elastic body extending in a curved shape from the rear waist area 12 toward the crotch area 13 And 76 are mounted retractably in the extended state. The front and

rear waist regions

11 and 12 have the elastically stretchable front and rear waist

elastic regions

71 and 73 described later by arranging the respective elastic bodies.

The base sheet 25 and the front and

rear waist sheets

26 and 27 have a weight of about 10 to 40 g / m ² and a fiber density of about 0.03 to 0.10 g / cm ^3. (Spunbond-melt-blown-spunbond) Non-woven fabric of fibers, air-through non-woven fabric, plastic sheet, or laminate sheet thereof can be used. In the present embodiment, the mass of about 10 ~ 18g / ^{m 2} as the base sheet 25, preferably a mass of about 13 g / ^{m 2} of an SMS nonwoven fabric, a mass of about 15 ~ 25g / ^{m 2} as a waist sheet 26 before and after, preferably A spunbond non-woven fabric having a weight of about 20 g / m ² can be used. In the present embodiment, the outer surface of the front and

rear waist sheets

26 and 27 is optionally subjected to a grid-like embossing / debossing process, and a concavo-convex pattern 28 is disposed. Further, in the present embodiment, the central portion 13C of the crotch area 13 is formed only of the base sheet 25. However, the central portion 13C may be formed of a plurality of sheets.

Regarding the dimensions of the diaper 10 (the same as the corresponding dimensions of the chassis 14), the dimension L1 in the longitudinal direction Y of the diaper 10 is about 600 to 1000 mm, the dimension W1 in the transverse direction X is about 400 to 800 mm, and the front waist region 11 The dimension L2 in the longitudinal direction Y of the front

side edge portions

11a and 11b (the same as the dimension in the longitudinal direction Y of the rear

side edge portions

12a and 12b of the rear waist region 12) is about 80 to 150 mm.

<Liquid-absorbent structure>
Referring to FIGS. 2 and 3, the liquid absorbing structure 15 has a front end edge 15 a and a rear end edge 15 b extending in the lateral direction X, spaced apart in the longitudinal direction Y, and spaced apart in the lateral direction X And has a front end 16A, a rear end 16B, and a central portion 16C located between the front and

rear ends

16A and 16B. The liquid-absorbent structure 15 is located on the skin-facing surface side, and has a body-side liner 50 made of a liquid-permeable fibrous nonwoven fabric, a liquid-absorbent absorbent body 51 having curved side edges, and a pair of barrier cuffs. A sheet 52 and a leak-proof sheet 53 are included. The absorbent body 51 is, for example, a liquid absorbent core made of a mixture of fluff pulp, absorbent polymer particles and the like, and a liquid-absorbing and diffusive core wrap sheet such as tissue paper which encapsulates the entire liquid absorbent core. And. The liquid-absorbent core has a front end edge 58a extending in the lateral direction X in the front waist area 11, and a rear end edge 58b extending in the lateral direction X in the rear waist area. The body side liner 50, the barrier cuff sheet 52 and the leakproof sheet 53 form end flaps 56a and 56b extending in the longitudinal direction Y from the front end edge 58a and the rear end edge 58b of the liquid absorbent core. The liquid-absorbent structure 15 and the base sheet 25 are bonded to each other through a bonding area 60 formed of a known bonding means such as a hot melt adhesive applied to at least one of the opposing surfaces thereof. In the present embodiment, the bonding area 60 is composed of a plurality of bonding sites separated in the longitudinal direction Y, but may be a continuous bonding area so as to bond the entire back surface of the liquid absorbent structure 15 .

Referring to FIG. 2, the pair of barrier cuff sheets 52 are folded in two and the inner surfaces thereof are fixed to each other and fixed to the skin-facing surface of the body side liner 50 and facing apart in the longitudinal direction Y It has a front fixed portion and a rear fixed portion, a fixed side edge 52b extending in the longitudinal direction Y, and a free side edge 52a positioned on the inner side in the lateral direction X from the fixed side edge 52b. In the free side edge 52a of the barrier cuff sheet 52, a cuff elastic body 57 made of a string-like or strand-like elastic material and extending in the longitudinal direction Y is attached retractably in an extended state. The contraction of the cuff elastic body 57 separates the free side edge 52a from the body side liner 50 to the body side of the wearer, and forms a pair of leakproof cuffs for preventing lateral leakage of the body fluid. The leak-proof sheet 53 is formed of a liquid-impervious fibrous nonwoven fabric, a liquid-impervious and moisture-permeable plastic film, or a laminate sheet thereof, and is disposed so as to cover at least substantially the entire lower surface of the absorber 51. And prevent the body fluid from leaking out from the non-skin facing surface (bottom) side of the liquid absorbent structure 15.

<Front and rear waist elastic area>
4 is a cross-sectional view taken along the line IV-IV in FIG. 1, and FIGS. 5 and 6 are plan views showing a state in which the liquid absorbing structure 15 is removed in the front and

rear waist regions

11 and 12 shown in FIG. is there. The front waist elastic region 71 includes a front outer elastic region 71A extending in the lateral direction X at the edge of the waist opening 23, a front inner elastic region 71C extending in the lateral direction X at the crotch region 13 side, and a longitudinal direction of the absorbent core There is a front intermediate elastic region (first region) 71B located on the Y outer side and between the front outer elastic region 71A and the front inner elastic region 71C. The rear waist elastic area 73 is a rear outer elastic area 73A extending in the lateral direction X at the edge of the waist opening 23, and an outer side in the longitudinal direction Y of the absorbent core and extending in the lateral direction X on the crotch area 13 side. It has an inner elastic region 73C and a rear intermediate elastic region (second region) 73B located between the rear outer elastic region 73A and the rear inner elastic region 73C. In FIG. 4, the front outer elastic area 71A and the rear outer elastic area 73A, and the front intermediate elastic area 71B and the rear intermediate elastic area 73B are in a worn state, as indicated by virtual lines S1 and S2 parallel to the longitudinal direction Z. Are positioned opposite to each other in the front-rear direction Z. However, at least the front intermediate elastic region 71B and the rear intermediate elastic region 73B may be positioned so as to face each other in the front-rear direction Z as long as the effects of the present invention described later can be achieved.

In the present invention, the front and rear intermediate

elastic regions

71B and 73B are located at least about 50 mm away from the waist opening 23 when the longitudinal direction Y dimensions of the front and

rear waist regions

11 and 12 are about 140 mm, at least about 50 mm Have a width dimension (dimension in the longitudinal direction Y). Since the front and rear intermediate

elastic regions

71B and 73B are separated from the waist opening 23 by at least about 50 mm, when the diaper 10 is worn, the front outer elastic region 71A is gripped by hand so as to be folded by hand on the front waist region 11 side. When the diaper 10 is pulled up in the rear waist region 12, it is difficult to bend the rear intermediate elastic region 73B in the step between the buttocks and thighs of the wearer. Can prevent it from being so-called Further, in order to exert the effects of the present invention described later, the front and rear intermediate

elastic regions

71B, 73B are the front and

rear end edges

15a, 15b of the liquid absorbent structure 15 whose bending rigidity changes in the longitudinal direction Y in the front and

rear waist regions

11, 12. It is preferable to be located in the vicinity.
The term "tuck" means that a part of the article moves during wear resulting in relatively large wrinkles / wrinkles (see FIG. 7).

<Each elastic body>
The front waist elastic body 72 can be formed of a string-like or strand-like elastic material. The front waist elastic body 72 located in the front outer elastic area 71A is made of a plurality of elastic materials disposed in a stretched state with a fineness of 300 to 1000 dtex and about 1.8 to 3.5 times, and the longitudinal direction It is preferable to arrange in Y about 3 to 15 mm apart from each other, and in this embodiment, it is made of 5 elastic materials having a fineness of about 620 dtex and an extension ratio of about 2.3 times, and about 6 mm in the longitudinal direction Y Spaced apart. The front waist elastic body 72 located in the front intermediate elastic region 71B is positioned to overlap the end flap 56a of the liquid absorbent structure 15 in plan view, and has a denier of 300 to 1000 dtex, about 1.8 to 3.5 times The elastic material is preferably arranged in a stretched state and preferably spaced apart from each other by about 3 to 15 mm in the longitudinal direction Y. In the present embodiment, the fineness is about 470 dtex, and the extension ratio is about It is made of four elastic materials that are 2.3 times larger and is disposed about 10 mm apart in the longitudinal direction Y. The front waist elastic body 72 located in the front inner elastic region 71C is made of a plurality of elastic materials disposed in a state where the fineness is extended to about 300 to 1000 dtex and about 1.8 to 3.5 times, and the longitudinal direction is It is preferable to arrange in Y about 5 to 20 mm apart from each other, and in the present embodiment, it is made of 10 elastic materials having a fineness of about 780 dtex, and the expansion ratio is about 2.5 times in the longitudinal direction Y Approximately 10 mm spaced apart from one another.

The rear waist elastic body 74 can be formed of a string-like or strand-like elastic material. The rear waist elastic body 74 located in the rear outer elastic region 73A is made of a plurality of elastic materials disposed in a state where the fineness is expanded to about 300 to 1000 dtex and about 1.8 to 3.5 times, and the longitudinal direction is It is preferable to arrange in Y about 3 to 15 mm apart from each other, and in this embodiment, it is made of 5 elastic materials having a fineness of about 620 dtex and an extension ratio of about 2.3 times, and 6 mm in the longitudinal direction Y Are spaced apart. The rear waist elastic body 74 located in the rear middle elastic region 73B is made of a plurality of elastic materials disposed in a state of having a fineness of 300 to 1000 dtex and approximately 1.8 to 3.5 times stretched, and is in the longitudinal direction It is preferable to arrange in Y about 3 to 15 mm apart from each other, and in the present embodiment, it is made of six elastic materials having a fineness of about 780 dtex and an extension ratio of about 2.1 times, 7 mm apart from each other. The rear waist elastic body 74 located in the rear inner elastic region 73C is made of a plurality of elastic materials disposed in a state where the fineness is expanded to about 300 to 1000 dtex and about 1.8 to 3.5 times, and the longitudinal direction is It is preferable to arrange in Y about 5 to 20 mm apart from each other, and in this embodiment, it is made of four elastic materials having a fineness of about 780 dtex and an extension ratio of about 2.5 times, and about 15 mm in the longitudinal direction Y They are spaced apart from one another.

Referring to FIG. 6, the chassis 14 has a buttock elastic zone 75 extending from the rear waist area 12 to the crotch area 13. The buttocks elastic region 75 is attached with a plurality of barb elastic bodies 76 extending in a curved shape toward the transverse axis Q so as to be contractible in an extended state. The buttocks elastic body 76 can be formed of a plurality of string-like or strand-like elastic materials having a fineness of about 500 to 800 dtex and an elongation ratio of about 1.0 to 2.5.

The separation dimension (pitch) in the longitudinal direction Y of the rear waist elastic body 74 disposed in the rear middle elastic region 73B is based on the separation dimension in the longitudinal direction Y of the front waist elastic body 72 disposed in the front intermediate elastic region 71B. Too small. Here, "the separation dimension of each elastic body in the longitudinal direction Y" refers to the size in the longitudinal direction Y in the nonexistent region of the elastic body formed between the elastic bodies adjacent to each other in the longitudinal direction Y. In order to make the separation dimension of the rear waist elastic body 74 smaller than that of the front waist elastic body 72, the number of the rear waist elastic bodies 74 may be larger than the number of the front waist elastic bodies 72, or the rear waist elastic body 74. This can be realized by adopting a configuration such as making the fineness (thickness) of the second waist elastic body 72 larger than the fineness of the front waist elastic body 72 or the like.

Thus, the number of the rear waist elastic bodies 74 in the rear middle elastic zone 73B is larger than the number of the front waist elastic bodies 72 in the front middle elastic zone 71B, and the longitudinal direction Y of the rear waist elastic bodies 74 in the rear middle elastic zone 73B. Is smaller than that of the front waist elastic body 72 of the front intermediate elastic region 71B, the bending rigidity in the longitudinal direction Y of the rear intermediate elastic region 73B (that is, the bending for forming a fold line extending in the lateral direction X) Of the front middle elastic region 71B in the longitudinal direction Y is relatively higher. Also, by arranging the string-like or strand-like front and rear waist elastics 72, 74 in the front and

rear waist regions

11, 12, when the rear waist region 12 is pulled up to the waist through the buttocks of the wearer, the rear waist region The front and

rear waist areas

11 and 12 can be pressed against the skin of the wearer without causing a so-called "tuck" state in 12, and the diaper 10 can be prevented from shifting and the fit can be improved.

In order to make the bending rigidity of the rear intermediate elastic region 73B relatively higher than the bending rigidity of the front intermediate elastic region 71B, the fineness of the rear elastic body 74 of the rear intermediate elastic region 73B is the front waist of the front intermediate elastic region 71B. A setting such as using one larger than that of the elastic body 72 can be adopted. In addition, as shown in the after-mentioned modification and other embodiments, an element (stiffening such as a fastening tape or the like that makes the bending rigidity in the longitudinal direction Y higher in the rear intermediate elastic region 73B compared to the front intermediate elastic region 71B. By adding a member, an auxiliary sheet made of non-woven fabric or plastic, etc., the correlation of their bending stiffness can be made to be the front intermediate elastic region 71B <the rear intermediate elastic region 73B.

In the case where the bending rigidity of both

elastic regions

71B and 73B is made different only by the configuration of the front and rear waist elastics 72 and 74 as in the present embodiment, for example, the number of rear waist elastics 74 If the pitch of the former is necessarily smaller than the pitch of the latter, it is formed in the inelastic part (non-existing area of the elastic member) between the rear waist elastics 74 and the longitudinal direction The number of rows of gathers extending in the transverse direction X that prevent bending in Y is the rows of gathers extending in the transverse direction X formed in the inelastic portion (area without the elastic members) between the front waist elastic members 72 Since the number is larger than the number, it can be said that the former has higher bending rigidity than the latter. Also, while relatively small gathers are formed in the inelastic portion between the rear waist elastics 74, while relatively large gathers are formed in the inelastic portion between the front waist elastics 71, the former It can be said that the bending rigidity is higher than the latter.

FIG. 7 is an explanatory view showing a state when wearing a diaper 110 showing an example of a conventional pants type wearing article, and FIG. 8 is an explanatory view showing a state when wearing the diaper 10 of the present embodiment It is.

Referring to FIG. 7, in the conventional diaper 110, the same elastic material in the form of a string or a strand is used as the front waist elastic body and the rear waist elastic body 174, and arranged in the front middle elastic area 171B of the front waist area. The number of front waist elastics is set to be the same as the number of rear waist elastics 174 disposed in the rear middle elastic region 173B of the rear waist region. In the conventional diaper having such a configuration, since the pitch of the front waist elastic body is substantially equal to the pitch of the rear waist elastic body 174 and the bending rigidity of the front intermediate elastic region 171B is relatively low, When the front waist region side is expanded, the front intermediate elastic region 171B is bent to allow a finger to be hooked, and the pulling operation becomes easy, while in the rear waist region, the rear intermediate elastic region 173B also becomes the front intermediate elastic region 171B and Similarly, the rear outer elastic region 173A is bent so that it is difficult to pull up against the step 79 between the thigh 77 and the buttocks 78, and the diaper 110 can not be pulled up smoothly. Furthermore, the rear middle elastic region 173B is bent to suppress pulling up of the diaper 110, whereby the rear inner elastic region 173C is easily bent. In such a state, if the rear waist region is forcedly pulled up, the rear intermediate elastic region 173B remains "sluggish", which may not only impair the wearing feeling but also cause leakage of excrement.

With reference to FIG. 8, as described above, in the diaper 10 according to the present embodiment, the front and rear waist elastics 72 and 74 are formed of the same string-like or strand-like elastic material, and a rear intermediate elastic region 73 B The number of elastic waist bodies 74 after being disposed is greater than that of the front elastic waist bodies 72 arranged in the front intermediate elastic region 71B. Therefore, when the flexural rigidity in the longitudinal direction of the rear intermediate elastic region 73B is higher than the flexural rigidity in the longitudinal direction of the front intermediate elastic region 71B, when the waist opening 23 of the diaper 10 is expanded when worn The front middle elastic region 71B is bent and can be hooked, which facilitates the pulling operation. Also, in the rear waist region 12, the rear intermediate elastic region 73 B does not bend by resisting the action of bending the bent front intermediate elastic region 71 B, so the rear waist region 12 The whole can be pulled up with the body fit to the wearer, and there is no risk that the back outer elastic area 73A will be caught by the step 79 between the thigh 77 and the buttocks 78. Furthermore, the rear inner elastic region 73C is pulled up smoothly without being bent by taking advantage of the pulling up of the rear intermediate elastic region 73B. Since the rear waist region 12 can be pulled up smoothly and worn in this manner, there is no possibility that part of it will “stick” and the feeling of wearing declines or excrement leaks.

When the number of front waist elastic bodies and rear waist elastic bodies 174 arranged in the front and rear intermediate

elastic regions

171B and 173B is the same and the bending rigidity in the longitudinal direction of both

regions

171B and 173B is almost the same as in the conventional diaper 110 The rear waist region may be misaligned, which may lead to a decrease in wearing feeling, while adjusting various settings such as the number of the front waist elastic body and the rear waist elastic body 174, the pitch, the fineness, etc. When the longitudinal bending rigidity of 171 B is made similar to the bending rigidity of the rear intermediate elastic region 173 B to the extent that the rear intermediate elastic region 173 B does not “break” or higher than the bending rigidity of the rear intermediate elastic region 173 B, the diaper 110 is worn At the same time, the entire front waist area fits to the abdomen, which makes it difficult to grip when pulled up and reduces operability, as well as squeezing the abdomen to cause discomfort There is. In the diaper 10 in the present embodiment, the number of the front waist elastic bodies 72 disposed in the front intermediate elastic region 71B is greater than that of the rear waist elastic bodies 74 disposed in the rear intermediate elastic region 73B, Since the correlation between the bending rigidity in the longitudinal direction Y of the intermediate elastic region 71B and the bending rigidity in the longitudinal direction Y of the rear intermediate elastic region 73B is such that the front intermediate elastic region 71B <the rear intermediate elastic region 73B, the diaper 10 It is possible to achieve a plurality of technical effects such as prevention of wearing controllability and feeling of wearing, and prevention of leakage of excrement thereby.

<Method of measuring bending stiffness>
The flexural rigidity was measured using a torque tester manufactured by IMADA (Model No. EX-0762) (load cell: tension / compression 50 N, torque 1 N). In each of the front and

rear waist regions

11 and 12 of the diaper 10, the dimension of the longitudinal direction Y is 45 mm from the position 35 mm apart from the waist opening 23 in the longitudinal direction Y toward the crotch region 13 A test piece of 30 mm in size was prepared. FIG. 9 is an explanatory view showing the collection site of the test piece 40 in the rear waist region 12. The test piece is held by gripping both

end portions

41 and 42 in the longitudinal direction (longitudinal direction Y) of the test piece 40 by 10 mm each with a pair of chucks of the tester, rotating one chuck around the other chuck, The flexural rigidity of 40 is measured with a torque tester. The rotation speed was 30 rpm, the rotation angle was 50 degrees, and the measurement angle was 40 degrees. Five sets of test pieces are prepared for each of the front and rear waist regions 11 and 12 (Examples 1 to 5), and the average value of these measured values (torque strength) (unit: mN · m) is averaged in the longitudinal direction Y It was the stiffness value. The front and rear waist elastics 72 and 74 attached in an extended state exist in the front and

rear waist regions

11 and 12 to be measured, so when cutting the test piece from the diaper 10, the front and rear waist elastics 72 and 74 The dimensions were measured with the front and

rear waist areas

11 and 12 pulled in the longitudinal direction Y and the transverse direction X against the contraction force of As shown in Table 1, the flexural rigidity value B1 of the rear intermediate elastic region 73B was higher than the flexural rigidity value B2 of the front intermediate elastic region 71B. The flexural rigidity in the longitudinal direction Y of the front and rear intermediate

elastic regions

71B and 73B can also be compared by measuring a test piece prepared according to the above-mentioned standard based on JIS L1096 19.1A method (45 ° cantilever method).

By appropriately setting the material, fineness, extension ratio, and separation dimension of the elastic body in each elastic region, the expansion stress of each elastic region, specifically, the predetermined width (30 mm) of the portion of the absorber 51 in the lateral direction X Elongation stress at 171% elongation (71% of the size at the maximum elongation of 100%) in width) is about 2.5 N for the front outer elastic region 71A and about 2 for the front intermediate elastic region 71B. 5N, the front inner elastic region 71C is about 5.0 N, the rear outer elastic region 73A is about 2.5 N, the rear intermediate elastic region 73B is about 3.0 N, and the rear inner elastic region 73C is about 5.0 N. When the bending rigidity of the rear intermediate elastic region 73B is made higher than that of the front intermediate elastic region 71B by adjusting the number and pitch of the front and rear waist elastics 72 and 74, the extension stress of the rear intermediate elastic region 73B is the front intermediate It becomes higher than the extension stress of elastic region 71B. In addition, the difference in extension stress between the front outer elastic region 71A and the front intermediate elastic region 71B is about 0 to 3.0 N, and the difference between the extension stress between the front intermediate elastic region 71B and the front inner elastic region 71C is about 0.5 to 3. The difference between the extension stress of the rear outer elastic region 73A and the rear intermediate elastic region 73B is about 0 to 3.0 N, and the difference of the extension stress of the rear intermediate elastic region 73B and the rear inner elastic region 73C is about 1.0 to 5. It is 0N.

By adjusting the number and pitch of the rear waist elastics 74 so that the extensional stress of the rear intermediate elastic region 73B is higher than that of the rear outer elastic region 73A, a so-called "back" state in the rear intermediate elastic region 73B The rear waist region 12 of the diaper 10 can be smoothly pulled along the buttocks of the wearer. In addition, the chassis 14 is easily bent at a portion where the extension stress changes relatively large, but the difference in extension stress between the back outer elastic region 73A and the rear intermediate elastic region 73B is 3.0 N or less, It is possible to suppress the occurrence of bending of the chassis 14 at the boundary between the back outer elastic region 73A and the rear middle elastic region 73B. In order to facilitate bending of the chassis 14 in the front intermediate elastic region 71A, the number and pitch of the front waist elastic bodies 72 are adjusted to set the extension stress of the front intermediate elastic region 71B to that of the front outer elastic region 71A. It is more preferable to make it lower.

Referring to FIG. 5, the distance R1 between the innermost front waist elastic body 72a in the longitudinal direction Y of the front outer elastic region 71A and the outermost front waist elastic body 72b in the longitudinal direction Y of the front intermediate elastic region 71B is And preferably about 5 to 20 mm, and in the present embodiment about 16 mm. The separation dimension R2 between the innermost front waist elastic body 72c in the vertical direction Y of the front intermediate elastic region 71B and the outermost front waist elastic body 72d in the vertical direction Y of the front inner elastic region 71C is about 5 to 15 mm. And preferably about 10 mm in this embodiment. Referring to FIG. 6, the separation dimension R3 in the longitudinal direction Y between the innermost rear waist elastic body 74a in the longitudinal direction Y of the rear outer elastic region 73A and the outermost rear waist elastic body 74b in the longitudinal direction Y of the rear intermediate elastic region 73B is Preferably about 5 to 15 mm, and in the present embodiment it is about 7 mm. The separation dimension R4 between the innermost rear waist elastic body 74c in the vertical direction Y of the rear intermediate elastic region 73B and the outermost rear waist elastic body 74d in the vertical direction Y of the rear inner elastic region 73C is about 10 to 25 mm. And preferably about 15 mm in this embodiment. Here, the separation dimension of each elastic body refers to the size in the longitudinal direction Y of the nonexistent region of the elastic body located between the elastic bodies adjacent to each other. A separation dimension R3 between the back outer elastic region 73A and the rear intermediate elastic region 73B in the longitudinal direction Y is preferably set smaller than a separation dimension R1 between the front outer elastic region 71A and the front intermediate elastic region 71B in the vertical direction Y.

The extensional stress changes, that is, the bending stiffness in the longitudinal direction Y changes in a portion between the back outer elastic region 73A and the rear middle elastic region 73B and in a portion between the front outer elastic region 71A and the front middle elastic region 71B. Thereby, the chassis 14 is easily bent, but the separation dimension R3 in the rear waist region 12 is made smaller than the separation dimension R1 in the front waist region 11 to suppress the bending of the chassis 14 occurring in the rear waist region 12 be able to.

The front end edge 15a of the liquid absorbent structure 15 is preferably located between the innermost front waist elastic body 72a of the front outer elastic area 71A and the outermost front waist elastic body 72b of the front intermediate elastic area 71B. It is more preferable to be located closer to the front waist elastic body 72b. By arranging the front end edge 15a between the front outer elastic area 71A and the front intermediate elastic area 71B in which the extension stress changes, the front waist area 11 is easily bent with the front end edge 15a as a base point, and the waist opening of the diaper 10 It becomes easy to put a finger when expanding 23. It is preferable that the rear end edge 15b of the liquid suction structure 15 be positioned opposite to the front end edge 15a in the front-rear direction Z, or be positioned closer to the waist opening 23 than the front end edge 15a. Since the rear end edge 15b extends to the vicinity of the waist opening 23, the bending rigidity of the rear intermediate elastic region 73B is enhanced by the presence of the end flap 56b of the liquid absorbent structure 15, and the rear waist is generated when pulling up the diaper 10. The bending of the area 12 can be further suppressed.

The dimension of the longitudinal direction Y of each elastic region in the front and

rear waist regions

11 and 12 can be divided so as to be a predetermined ratio as long as the effects of the present invention are exhibited. For example, the size in the longitudinal direction Y of the front and rear intermediate

elastic zones

71B, 73B and the front and rear inner

elastic zones

71C, 73C is 1.0 to 2.5 times the size in the longitudinal direction Y of the front and rear outer

elastic zones

71A, 73A. The dimensions can be set to be smaller or the dimensions in the longitudinal direction Y of each elastic region can be divided equally. The dimensions in the longitudinal direction Y of the front and back outer

elastic regions

71A and 73A are preferably set equal, and the dimensions in the vertical direction Y of the front and rear intermediate

elastic regions

71B and 73B are preferably set equal.

<Method of measuring elongation stress>
Using the tensile tester manufactured by Instron Japan Co., Ltd. (INSTRON model: 5564) and setting the tensile speed to 100 mm / min, the elongation stress of each elastic area of the front and rear waist

elastic area

71, 73 is set as follows using the following method It measured by. In each elastic region, for a portion that does not overlap with the liquid-absorbent structure, cut a test strip with a length of 30 to 50 mm in the transverse direction X from that portion, and separate the transverse direction X from the test piece in the natural state A pair of marked lines with a size of 20 mm is drawn, and the extension force of each sample when it is extended until its separation dimension becomes 1.7 times is determined and compared. In addition, when the dimension of the vertical direction Y of the diapar 10 which is the width dimension in each sample is not constant, it is each according to the extension stress when the extension force about each sample is converted into the value in the case of 30 mm in width. Compare the samples.

<Modification>
FIG. 10 shows a modification of the diaper 10 according to the first embodiment, the diaper 10 extending in the longitudinal direction Y and the transverse direction X until the maximum elongation of each elastic body (the extent to which the gather by the contraction action of the elastic body disappears). It is the top view which looked at the back waist area 12 of the back side (non-skin opposing surface side).

In the diaper 10 in the modification, a stiffening member 65 that functions as a fastening tape used when discarding the diaper 10 is disposed in the central portion 66 of the rear middle elastic region 73B. Referring to FIG. 11, the stiffening member 65 is disposed on the non-skin facing surface side of the rear waist sheet 27 and is formed of a plastic sheet extending in the longitudinal direction Y, and the first stiffening members are stacked one on another via fold lines. A section 61, a second section 62, and a third section 63 constitute a Z-shaped cross section in the stacked state. The first portion 61 is fixed to the rear waist sheet 27 via an adhesive, the second portion 62 is releasably joined to the first portion 61, and the third portion 63 is releasably joined to the second portion 62. ing.

In such a diaper 10, the bending rigidity of the rear intermediate elastic region 73B is increased by attaching the rigidity imparting member 65 to the rear intermediate elastic region 73B, and the rear intermediate elastic region 73B generated when the diaper 10 is worn Can reduce the so-called "speaking" state more. The stiffening member 65 is not limited to a plastic sheet, and may use a single or multiple fiber non-woven fabric or the like.

The stiffening member 65 can be disposed on the side portion 67 located in the lateral direction X outside of the central portion 66 in addition to the central portion 66 in the lateral direction X of the rear intermediate elastic region 73B. In the diaper 10 illustrated in FIG. 10, the stiffening member 65 is disposed in the central portion 66 in a region overlapping the longitudinal axis P, and extends from the rear inner elastic region 73C to the rear outer elastic region 73A. When pulling up the diaper 10 from the wearer's leg toward the waist, in the central portion 66, the pull-up of the diaper 10 is suppressed by hitting the wearer's buttocks 78, and a so-called "slapping" condition is likely to occur. By arranging, generation | occurrence | production of a so-called "fold" state can be suppressed and the diaper 10 can be smoothly pulled up along the buttocks part 78. As shown in FIG. The rigidity imparting members 65 may be disposed at the central portion 66 and both

side portions

67 and 67 in the lateral direction X, respectively, and bending of the rear waist region 12 can be further suppressed by arranging a plurality of rigidity imparting members 65. . Further, the rigidity imparting member 65 is disposed to extend from the rear inner elastic region 73C to the rear outer elastic region 73A, whereby the boundary portion between the rear outer elastic region 73A and the rear intermediate elastic region 73B, and the rear intermediate elastic region 73B and the rear It is possible to prevent the chassis 14 from being bent at the boundary of the inner elastic region 73C.

Second Embodiment
Fig. 12 is a plan view similar to Fig. 2 of the diaper 10 according to the second embodiment, and Fig. 13 is an exploded perspective view similar to Fig. 3 of the diaper 10 according to the second 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.

In the diaper 10 of the present embodiment, a waist elastic sheet 90 made of a sheet member elastically extensible and contractible in the lateral direction X is disposed in the front and

rear waist regions

11 and 12 instead of the front and rear waist elastics 72 and 74 There is. The waist elastic sheet 90 includes a front waist elastic sheet 91 located in the front waist area 11 and a rear waist elastic sheet 92 located in the rear waist area 12, and the front waist elastic sheet 91 is a longitudinal direction of the absorbent core The outer waist elastic sheet 92 is made of the same sheet material as the front waist elastic sheet 91, and is disposed between the base sheet 25 and the front waist sheet 26 in the longitudinal direction Y of the absorbent core. , And between the base sheet 25 and the rear waist sheet 27. The front and rear waist

elastic sheets

91, 92 are joined to each other at the side seams 22 to form an annular waist elastic area. In the rear waist area 12, a second area 84 located between the edge 82 of the waist opening 23 and the rear end edge 58 b of the absorbent core and extending over the entire area between the rear waist area 12 further An auxiliary sheet 93 is disposed.

The auxiliary sheet 93 is disposed over the entire area between the two side portions of the rear waist area 12 and in the area of the front and

rear waist areas

11 and 12 located on the outer side in the longitudinal direction Y of the absorbent core. The flexural rigidity in the direction Y is set to be higher than in the other regions. In the front waist region 11 of the diaper 10, it is located between the edge 81 of the waist opening 23 and the front end edge 58a of the liquid-absorbent core, and faces the second region 84 in the front-rear direction Z of the wearing condition of the diaper 10. The bending rigidity in the longitudinal direction Y of the first region 83 is set to be relatively low compared to the second region 84. The auxiliary sheet 93 can be formed of a fiber non-woven fabric or the like, and is preferably a sheet member that can elastically expand and contract in the lateral direction X.

In the diaper 10 of the second embodiment, since the bending rigidity in the longitudinal direction Y of the second region 84 is higher than the bending rigidity in the longitudinal direction Y of the first region 83, technical effects similar to those of the first embodiment are exhibited. be able to.

In addition to the materials described in the specification, various known materials that are usually used in this type of article can be used without limitation for each component constituting the diaper 10 according to the present invention. Also, in the specification and claims, the terms "first", "second" and "third" 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 11, rear waist region 12, crotch region 13 located between front and rear waist regions 11, 12 A chassis 14 including a liquid-absorbent core extending from the crotch region 13 to the front and

rear waist regions

11 and 12, and a pair of waist openings 23 and a pair formed by connecting both side edges of the front and

rear waist regions

11 and 12 In the pant-type diaper 10 including the leg opening 24 of the second embodiment, the liquid-absorbent core has a front end edge 58a and a rear end edge 58b extending in the X lateral direction, facing each other at a distance in the longitudinal direction Y. A plurality of front waist elastics 72 attached to be contractible in the lateral direction X in a stretched state between the side edges of the front waist area 11 and the front waist elastics 72 are disposed, and Edge And a front intermediate elastic region 71B positioned between the front end edge 58a of the liquid absorbent core, and the rear waist region 12 is contractible in the lateral direction X in a stretched state between both side edges of the rear waist region 12 A rear intermediate elastic region in which a plurality of attached rear waist elastic bodies 74 and rear waist elastic bodies 74 are disposed and located between the edge of the waist opening 23 and the rear end edge 58b of the absorbent core A front intermediate elastic region 71B and a rear intermediate elastic region 73B are positioned opposite to each other in the front-rear direction Z of the worn state, and the number of rear waist elastic bodies 74 in the rear intermediate elastic region 73B is More than the number of front waist elastic bodies 72 in front middle elastic zone 71B, the separation dimension of back waist elastic bodies 74 adjacent to each other in rear middle elastic zone 73B is adjacent to each other in front middle elastic zone 71B. And wherein the smaller than the separation size of the longitudinal direction Y of the waist elastic member 72.

rear waist regions

11 and 12 In the pant-type diaper 10 including the leg opening 24 of the second embodiment, the liquid-absorbent core has a front end edge 58a and a rear end edge 58b extending in the X lateral direction, facing each other at a distance in the longitudinal direction Y. Has a first region 83 located between the edge of the waist opening 23 and the front end edge 58a of the absorbent core and extending all the way between both side edges of the front waist region 11; Is the edge of the waist opening 23 And a rear end edge 58b of the liquid-absorbent core, and a second area 84 covering the entire area between both side edges of the rear waist area 12, and a first area 83 and a second area 84 Are positioned opposite to each other in the longitudinal direction Z of the worn state, and the flexural rigidity in the longitudinal direction Y of the second region 84 is higher than the flexural rigidity in the longitudinal direction Y of the first region 83 .

The present invention disclosed in the above paragraphs 0058 and 0059 includes at least the following embodiment, and the embodiments can be configured alone or in combination.
(1) The front outer elastic area 71A where the front waist elastic body 72 is disposed is located at the edge of the waist opening 23 of the front waist area 11, and the edge of the waist opening 23 of the rear waist area 12 is A rear outer elastic area 73A where the waist elastic body 74 is disposed is located, in the longitudinal direction Y of the innermost rear waist elastic body 74a of the rear outer elastic area 73A and the outermost rear waist elastic body 74b of the rear intermediate elastic area 73B. The separation dimension is smaller than the separation dimension in the longitudinal direction Y between the innermost front waist elastic body 72a of the front outer elastic region 71A and the outermost front waist elastic body 72b of the front intermediate elastic region 71B.
(2) The extension stress at the predetermined width of the rear intermediate elastic region 73B is higher than the extension stress at the predetermined width of the rear outer elastic region 73A.
(3) A sheet-like or tape-like rigidity imparting member 65 is disposed in a part of the rear intermediate elastic region 73B.
(4) The rigidity imparting member 65 is located at the central portion 66 in the lateral direction X of the rear intermediate elastic region 73B.
(5) The rigidity imparting member 65 is a fastening tape extending in the longitudinal direction Y.

10 diapers (pants-type wearing goods)
11 front waist area 12 back waist area 13 crotch area 14 chassis 15 liquid absorbing structure 58a front end edge 58b of liquid absorbing core rear end edge 65 of liquid absorbing core rigidity imparting member 71 front waist elastic area 71A front outer elastic area 71B Pre-intermediate elastic region (first region)
72 front waist elastic 73 rear waist elastic region 73A back outer elastic region 73B rear intermediate elastic region (second region)
74 rear waist elastic body X horizontal direction Y longitudinal direction Z longitudinal direction

Claims

The crotch region 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 pants-type wearing article comprising: a chassis including a liquid-absorbent core extending from a region to the front and rear waist regions; and a waist opening and a pair of leg openings defined by connecting both side edges of the front and rear waist regions;
The liquid-absorbent core has a front end edge and a rear end edge which are spaced apart and opposed to each other in the longitudinal direction.
The front waist area includes a plurality of front waist elastic bodies attached in a contractable manner in the lateral direction in an extended state between the side edges of the front waist area, and the front waist elastic body, and A first region located between an edge of the waist opening and the front end edge of the absorbent core;
In the rear waist region, a plurality of rear waist elastic bodies attached in a contractable manner in the lateral direction in an extended state between the side edges of the rear waist region and the rear waist elastic body are disposed, and A second region located between an edge of the waist opening and the rear end edge of the absorbent core;
The first area and the second area are positioned opposite to each other in the front-rear direction of the worn state,
The number of rear waist elastics in the second region is greater than the number of front waist elastics in the first region,
The longitudinal separation dimension of the rear waist elastic bodies adjacent to each other in the second region is smaller than the longitudinal separation dimension of the front waist elastic bodies adjacent to each other in the first region. The said wearing article.
The crotch region 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 pants-type wearing article comprising: a chassis including a liquid-absorbent core extending from a region to the front and rear waist regions; and a waist opening and a pair of leg openings defined by connecting both side edges of the front and rear waist regions;
The liquid-absorbent core has a front end edge and a rear end edge which are spaced apart and opposed to each other in the longitudinal direction.
The front waist region has a first region located between the edge of the waist opening and the front end edge of the absorbent core and extending over the entire region between the side edges of the front waist region.
The rear waist region has a second region located between the edge of the waist opening and the rear end edge of the liquid absorbent core and extending over both the side edges of the rear waist region. ,
The first area and the second area are positioned opposite to each other in the front-rear direction of the worn state,
The wear article characterized in that the flexural rigidity in the longitudinal direction of the second region is higher than the flexural rigidity in the longitudinal direction of the first region.
A front outer elastic area where the front waist elastic body is disposed is located at an edge of the waist opening of the front waist area, and an edge of the waist opening at the rear waist area is the rear waist elastic body An outer elastic area is located, and the separation dimension in the longitudinal direction between the innermost rear waist elastic body of the rear outer elastic area and the outermost rear waist elastic body of the second area is the front outer elastic The wearing article according to claim 1 smaller than the separation size in the longitudinal direction of the innermost front waist elastic body of a field, and the outermost front waist elastic body of said 1st field.
The wearing article according to claim 3, wherein the extension stress in the predetermined width of the second region is higher than the extension stress in the predetermined width of the back outer elastic region.
The wearing article according to any one of claims 1 to 4, wherein a sheet-like or tape-like stiffening member is disposed in a part of the second region.
The wearing article according to claim 5, wherein the rigidity imparting member is located at the center in the lateral direction of the second region.
The wearing article according to claim 5 or 6, wherein the stiffening member is a longitudinally extending fastening tape.