WO2017037958A1

WO2017037958A1 - Underpants-type wearable article

Info

Publication number: WO2017037958A1
Application number: PCT/JP2015/076030
Authority: WO
Inventors: 瞳中尾; 祐介川上; 訓功川端
Original assignee: ユニ・チャーム株式会社
Priority date: 2015-09-03
Filing date: 2015-09-14
Publication date: 2017-03-09
Also published as: JP5866054B1; JP2017047148A; TWI698230B; JP5977424B1; TW201713289A; JP2017047163A

Abstract

Provided is an underpants-type wearable article for adults which is provided with a relatively slim liquid-absorbing core, is capable of temporarily diffusing and retaining a body fluid in an amount equal to or greater than the water-retention amount of the liquid-absorbing core, and is capable of being worn by women without any sensation of resistance. A first dimension (L1) from the lower end edge (14a) to the upper end edge (14b) of a front waist panel (14) in a non-extended state is smaller than a second dimension (L2) from the lower end edge (14a) to the lower end edge of an absorption panel (16). The sum total of the first dimension (L1) and the second dimension (L2) is 250-290 mm. A fourth dimension (L4) of one of a pair of non-overlapped sections of the lower end edge (14a) in the horizontal direction (X), said non-overlapped sections being positioned outside in the horizontal direction (X) with respect to a section of the lower end edge (14a) which overlaps the absorption panel (16), is 45-80% the size of a third dimension (L3) in the horizontal direction (X) of the section of the lower end edge (14a) which overlaps the absorption panel (16). The water-retention amount of an absorbent body is 150-400 g. The extensional stress in an expansion/contraction region in which front waist elastic bodies (20) are disposed is higher than the extensional stress in an expansion/contraction region in which rear waist elastic bodies (23) are disposed.

Description

Pants type wearing article

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

In Patent Document 1, a front waist panel forming a front waist region, a rear waist panel forming a rear waist region, an absorbent panel positioned between the front and rear waist panels to form a crotch region, a liquid absorbent core There is disclosed a pants-type wearing article including a pair of leakproof cuffs extending in the longitudinal direction on the side of the skin facing surface of the absorbent panel.

International Publication No. 2006/017718 (WO2006 / 017718)

In the pants-type wearing article disclosed in Patent Document 1, the width dimension of the absorber is increased in order to ensure sufficient absorption of body fluid, and even if the absorber absorbs body fluid after excretion and the weight increases, the position is increased. The vertical dimension around the waist was made larger than that of the body so as not to shift. However, when such a wearing article is worn, the leg opening may be caught by the leg opening or the upper end of the diaper may protrude from the upper end of the clothing such as underwear when the leg opening becomes relatively small and worn . In addition, the crotch portion may be stiffened, a part may be bent, and a step-like contour line may appear on the clothes, and it may be recognized by others that the diaper is worn in appearance. In particular, for female wearers who wear diapers for the first time because of light incontinence, such difficulty of wearing, poor appearance and that they may be known by others that they are wearing diapers Feel a sense of resistance.

The object of the present invention is an improvement of the prior art, and it is possible to temporarily diffuse and retain fluid having a relatively slim liquid absorbent core and at the same time the amount of water retention of the liquid absorbent core. , The provision of an adult pants-type wearing article that can be worn by women without a sense of resistance.

The present invention has a longitudinal direction and a lateral direction, and is disposed between a front waist panel forming a front waist region, a rear waist panel forming a rear waist region, and the front and rear waist panels to form the crotch region And an absorbent panel having an absorbent body.

In the pants-type wearing article according to the present invention, in the non-stretched state, a first dimension which is a length dimension from the upper edge to the lower edge of the front waist panel is the absorption panel from the lower edge of the front waist panel Smaller than the second dimension which is the length dimension up to the lower end edge of the front waist panel, and the total dimension of the first dimension and the second dimension is 250 to 290 mm, Of the pair of non-overlapping portions located on the outer side in the lateral direction of the overlapping portion of the lower end edge with respect to the third dimension which is the lateral length dimension of the portion overlapping the absorbent panel The fourth dimension, which is the lateral dimension of one non-overlapping portion, has a size of 45 to 80%, and the water retention amount of the absorber is 150 to 400 g, and the lateral dimension in the front waist region Extend in the direction Elongation stress placed stretchable zone of the waist elastic body, being higher than a tensile stress of the stretchable region waist elastics are disposed after the said rear waist region extending in the transverse direction.

The absorbent panel has both side portions located on the outer side in the lateral direction of the absorber, and on both sides, longitudinally extending leg elastic bodies are disposed, and the dimension in the thickness direction of the both sides is the absorption Because the dimensions in the thickness direction of the central portion of the panel are larger, both sides have relatively high bending rigidity, and even if the width dimension of the absorbing panel is relatively small, the rear waist region side There is no risk that a part may fall and the buttocks may be exposed.

In the stretched state, the first dimension is 180 to 210 mm, the second dimension is 170 to 190 mm, the third dimension is 190 to 210 mm, and the fourth dimension is 170 to 270 mm. The appearance is relatively low rise like a low rise, can give a clean impression.

The absorbent panel further includes a pair of leakproof cuffs extending in the longitudinal direction on the skin facing surface side, and the leakproof cuffs are arranged with the longitudinally extending proximal end portion and the plurality of longitudinally extending cuff elastic bodies. And a longitudinally extending side extending portion is positioned outside the lateral direction of the proximal end portion of the leak-barrier cuff, and a leg elastic body is disposed in the side extending portion. Ru. In such a wearing article, the leakage preventing cuffs stand up and come in contact with the buttocks of the wearer, while the side extension parts come in contact with the base of the thighs, so the lateral leakage of the excrement is assured. It can be suppressed.

The side extension portion has a hydrophilic layer and a hydrophobic layer covering the hydrophilic layer in the thickness direction, and thus temporarily holds a body fluid having a water holding amount equal to or greater than the water retention amount of the absorber in the hydrophilic layer. While covering the hydrophilic layer with the hydrophobic layer, the leakage of the body fluid is suppressed.

A liquid-permeable inner sheet covering the skin-facing surface side of the absorber is provided, and the hydrophilic layer has an extended portion of the inner sheet extending outward in the lateral direction from both side edges of the absorber. By utilizing the liquid diffusibility and the liquid retentivity of the inner sheet, it is possible to temporarily hold the body fluid more than the water retention amount of the absorber.

The absorbent body has a liquid-absorbent core and a core cover sheet covering the same, and the hydrophilic layer extends from the both sides of the liquid-absorbent core further outward in the lateral direction. Since it has a portion, by utilizing the liquid diffusibility and the liquid retentivity of the core cover sheet, it is possible to temporarily hold the body fluid more than the water retention amount of the absorber.

According to the underpants-type wearing article for adults according to the present invention, it is possible to give a clean impression that is relatively shallow in the crotch, easy to wear, and fit to the shape of the wearer.

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 shown as an example of the underpants type wearing article which concerns on this indication. The partially broken development top view which looked the diaper from the skin opposing surface side. Sectional drawing in alignment with the III-III line of FIG. The enlarged view of the area | region enclosed by IV line of FIG. (A) The top view in the non-expanding state of a diaper. (B) The figure which shows the aspect which measures the change of the outline line of clothes in, when making the doll which made the diaper wear a clothes. (A) The top view in the non-stretching state of the diaper which is an example of the conventional diaper. (B) The figure which shows the aspect which measures the change of the outline line of clothes in, when clothes are worn to the doll which made the conventional diaper pierced. (A) The top view in the non-elongation state of the underwear which is an example of women's underwear. (B) The figure which shows the aspect which measures the change of the outline line of clothes in, when making the doll which made underwear wear clothes.

The following embodiment relates to a disposable diaper 10 which is an example of the pull-on wearing article mainly used for adults according to the present invention shown in FIG. 1 to FIG. 7, not only the essential constitution of the invention but also selective and preferable. Includes configuration. In FIG. 2, each elastic body described later resists its contraction force, and the contraction force in the transverse direction X and the longitudinal direction Y makes gathers produced in the components of the diaper 10 to which each elastic body is attached be natural. It is in an extended state to the extent that it appears to be substantially lost by visual inspection.

1 to 3, the disposable diaper 10 has a longitudinal direction Y and a transverse direction X intersecting the same, a thickness direction Z, a skin opposing surface and a non-skin opposing surface opposite to the skin, and It has a longitudinal centerline P which bisects the longitudinal dimension and a transverse central line Q which bisects the longitudinal dimension Y, and is substantially symmetrical with respect to the longitudinal centerline, and the front waist region 11; It includes a rear waist region 12 and a crotch region 13 located between the front waist region 11 and the rear waist region 12. In this invention, a pant-type wearing article means a pull-on wearing article, has a defined waist opening and leg opening, inserts the wearer's leg into the leg opening and pulls the article onto the waist for wearing Refers to an item that can be worn on a person's body. The article may or may not have a pair of leg hoses.

The diaper 10 is an absorbent panel extending in the longitudinal direction Y between the front waist panel 14 forming the front waist region, the rear waist panel 15 forming the rear waist region, and the front and

rear waist panels

14 and 15 to form the crotch region 13 And 16.

The absorbent panel 16 has a front end 19A located on the skin facing surface side of the front waist area 11, a rear end 19B located on the skin facing surface of the rear waist area 12, and an intermediate located between the front and rear ends 19A and 19B. And 19C. In the present embodiment, the front and rear end portions 19A and 19B of the absorbent panel 16 are positioned on the skin facing surface side of the front and

rear waist regions

11 and 12, respectively, but the front and rear end portions 19A and 19B are front and

rear waist regions

11 and 12 respectively. The absorbent panel 16 may be fixed to the outer surface of the front and

rear waist panels

14 and 15 so as to be located on the non-skin facing surface of the

The side edges of the front waist region 11 and the side edges of the rear waist region are joined to each other by a plurality of side seams 25 which are interrupted in the longitudinal direction Y, and a waist opening 26 and a pair of leg openings 27 are defined. There is. The side seams 25 can be formed by bonding means using various adhesives such as a hot melt adhesive, heat sealing, various known bonding means using welding means such as sonic, or a combination thereof.

The front waist panel 14 has a lower end edge (lower end edge of the front waist area) 14a which forms a part of the front leg opening, an upper edge (upper end edge of the front waist area) 14b which forms the front waist opening, and upper and lower end edges It has a horizontally long rectangular shape defined by both

side edges

14c and 14d (both side edges of the front waist region) extending in the longitudinal direction Y between 14a and 14b. In addition, the front waist panel 14 has a liquid-impervious inner layer sheet 17 located on the skin-facing surface side, a liquid-impervious outer layer sheet 18 located on the non-skin facing surface side, and the inner and

outer layer sheets

17 and 18. , And a plurality of strand-like or string-like front waist elastic bodies 20 disposed contractible in an extended state in the lateral direction X.

The rear waist panel 15 has a lower end edge (lower end edge of the rear waist area) 15a which forms a part of the rear leg opening, an upper edge (upper end edge of the rear waist area) 15b which forms the rear waist opening, and upper and lower end edges Both side edges (both side edges of the rear waist region) 15c and 15d extending in the longitudinal direction Y between 15a and 15b. The rear waist panel 15 includes a liquid-impervious inner layer sheet 21 positioned on the skin-facing surface side, a hydrophobic and / or liquid-impervious outer layer sheet 22 positioned on the non-skin-facing surface side, and an inner and outer layer sheet 21. , 22 and a plurality of strand-like or string-like rear waist elastic bodies 23 disposed retractably in the transverse direction X in a stretched state.

The front waist elastic body 20 has a plurality of front upper waist elastic bodies 20A extending in the lateral direction X along the upper end edge 14b, and a front lower waist elastic body located between the front upper upper waist elastic body 20A and the lower end edge 14a. And 20B. The rear waist elastic body 23 is a rear lower waist elastic body located between the rear upper waist elastic body 23A and the rear upper waist elastic body 23A and the lower end edge 15a extending in the lateral direction X along the waist opening edge. And 23B. The front lower waist elastic body 20B is positioned to overlap with the front end 19A of the absorbent panel 16 and the diaper 10 in plan view, and the rear lower waist elastic body 23B is mutually overlapped with the rear end 19B of the absorbent panel 16 in plan view It is located to overlap.

The inner and

outer layer sheets

17, 18, 21, 22 of the front and

rear waist panels

14, 15 are impervious and preferably breathable, having a weight of about 10 to 40 g / m ² and a fiber density of about 0.03 Various known fiber non-woven fabrics, such as spun bond non-woven fabric of ~ 0.1 g / cm ³ , SMS (spun bond-melt-blown-spun-bond) fiber non-woven fabric, air-through fiber non-woven fabric, etc. can be used.

In the front and rear waist elastics 20 and 23, for example, the front and rear

upper waist elastics

20A and 23A have a fineness of about 600 to 1200 dtex and can be contracted in a state of being stretched about 2.5 to 3.5 times A string-like or strand-like elastic material may be used. In addition, as the front and rear lower waist

elastic bodies

20B and 23B, for example, a string shape or a strand having a fineness of about 400 to 800 dtex and disposed so as to be contractible in a state of being stretched about 1.5 to 3.0 times -Shaped elastic materials can be used. It is preferable that the extensional stress of the expansion and contraction region in which the front lower waist elastic body 20B is disposed is higher than the extensional stress of the expansion and contraction region in which the rear lower waist elastic body 23B is disposed.

Various conditions such as the fineness of the front and rear waist elastics 20 and 23, the stretching magnification, and the separation dimension (pitch) between the elastics can be appropriately changed as needed, but the wearer's body at the waist opening side Conditions of each elastic body so that the expansion stress in the expansion and contraction area by the front and rear upper waist

elastic bodies

20A and 23A is higher than the expansion stress in the expansion and contraction area by the front and rear lower waist

elastic bodies

20B and 23B in order to be worn stably. It is preferable to set Also, as long as the required elastic force can be applied to the front and

rear waist regions

11 and 12, instead of or together with the front and rear waist elastics 20 and 23, the elastic stretchable sheet is applied to the inner surface side of the front and

rear waist regions

11 and 12 It may be disposed on the outer surface side. By arranging the front and rear waist elastics 20, 23 on the entire outer surface of the diaper 10, a plurality of gathers are formed on the outer surface, and are gathered as a whole.

The absorbent panel 16 is a vertical rectangular shape defined by the front and rear end edges 16a and 16b and the both side edges 16c and 16d, and the front and rear end portions 19A and 19B are formed on the skin facing surface of the front and

rear waist panels

14 and 15, for example They are bonded to each other via a front and rear bonding area (not shown) formed by applying a hot melt adhesive. The application pattern of the hot melt adhesive in the front and rear joint area may adopt, for example, various known shapes such as Ω shape, spiral shape, and wave shape in addition to a plurality of line shapes extending in the longitudinal direction Y.

Referring to FIGS. 2 to 4, the absorbent panel 16 is a liquid-absorbent structure 30 composed of a hydrophilic / liquid-permeable inner sheet (body-side liner) 31 and an absorbent body 33 positioned on the skin-facing surface side. A hydrophobic covering sheet 32 positioned on the non-skin opposing surface side of the liquid absorbent structure 30, and a hydrophobicity or a size that covers at least the bottom of the non-skin opposing surface side of the liquid absorbent structure 30; And an impervious, leak-proof plastic film 34. The absorber 33 has a liquid-absorbent core 35 and a core cover sheet 36 which covers the whole of the liquid-absorbent core 35.

The liquid-absorbent core 35 is a semi-rigid panel shaped into a required shape, and extends toward the longitudinal centerline P between the front and rear edges extending in the lateral direction X and the front and rear edges (horizontal direction X And both

side edges

35c, 35d extending in a convex manner. Also, the absorbent core 35 comprises wood fluff pulp and superabsorbent polymer particles (SAP) commonly used in the art. When the worn article 10 is used as a diaper for adults and light incontinence, it is preferable that the thickness dimension of the absorbent core 35 be relatively small, for example, the mass of SAP to the mass of wood fluff pulp On the other hand, by making the size relatively small, the thickness dimension may be reduced while maintaining the required amount of water absorption, or the absorbent core 35 may be formed only of SAP.

The inner sheet 31 and the core cover sheet 36 are formed of a sheet material having lyophilic (hydrophilic) and liquid diffusibility, and the material is, for example, a weight of about 15 to 25 g / m ^2. The hydrophilized spunbond non-woven fabric, SMS fiber non-woven fabric, etc. can be used. The material of the core cover sheet 36 may be the same type of sheet material as the inner surface sheet 31 but is preferably tissue paper. In addition, the thickness dimension may be smaller than that of the inner sheet 31 and may be a thickness dimension that achieves a strength that can hold the liquid-absorbent core 35 in a required shape. The covering sheet 32 is formed of a hydrophobic or substantially liquid-impervious sheet material, and is formed of, for example, an SMS fiber non-woven fabric, a spun-bonded non-woven fabric, or the like having a weight of about 15 to 30 g / m ² . The leakproof film 34 is preferably formed of a breathable, hydrophobic sheet material, for example, a moisture-permeable plastic film having a weight of about 10 to 25 g / m ² .

In the liquid absorbent structure 30, the inner sheet 31 further extends outward in the lateral direction X from the side edges 35c and 35d of the liquid absorbent core 35. Specifically, the inner sheet 31 covering the skin-facing surface side of the liquid-absorbent core 35 is along a bending line (not shown) extending in the longitudinal direction Y along the side edges 16 c and 16 d of the absorbing panel 16. It is bent and extends toward the longitudinal center line P, and its outer edge 31 b is located on the non-skin opposing surface side of the liquid-absorbent core 35. Further, the core cover sheet 36 which covers the liquid absorbent core 35 has an outer size which is larger than the outer dimensions of the liquid absorbent core 35. The inner sheet 31 and the core cover sheet 36 respectively have extending

portions

31A, 36A extending outward in the lateral direction from the side edges 35c, 35d of the liquid absorbent core 35, and these extending

portions

31A, 36A A hydrophilic layer (liquid absorbing layer) 50 is formed on the outer side of the liquid absorbent core 35 in the lateral direction X.

The hydrophilic layer 50 has a four-layer structure because it is formed of the

extension portions

31A and 36A in which the inner surface sheet 31 and the core cover sheet 36 are folded. However, the extended portion 31A of the inner sheet 31 and the extended portion 36A of the core cover sheet 36 may have a single-layer structure instead of a two-layer structure as long as they have the required liquid retention performance, or they may be hydrophilic The layer 50 may be formed of only the extending portion 31A of the inner sheet 31. Further, since both

side edges

35c, 35d of the liquid absorbent core 35 have a concave shape, the hydrophilic layer 50 has the largest dimension in the lateral direction X at the central portion of the crotch region 13, and the front and rear waist regions The dimensions are smallest at 11 and 12.

By having such a configuration, the absorbent panel 16 has a pair of leakproof cuffs 60 extending in the longitudinal direction Y, and a pair of side extension parts (gasket cuffs) 61 located on the outer side in the lateral direction X of the leakproof cuffs 60. including. The leak-barrier cuffs 60 are fixed to the inner sheet 31 via the inner joint area 47 and both end fixing parts fixed to the inner sheet 31 through the end joint area 48 of the both sides 42 of the covering sheet 32. A proximal end (proximal portion) 62 extending in the longitudinal direction Y, and a free portion (distal portion) 63 extending in the longitudinal direction Y parallel to the proximal end 62 and extending in the longitudinal direction Y between both end fixing portions And. A cuff elastic body 64 is disposed in the free portion 63 so as to be contractible in an extended state. In the worn state, the cuff elastic body 64 contracts so that the edge separates from the inner sheet 31 to the body side of the wearer and fits the thighs of the wearer to prevent leakage of excrement.

In the present embodiment, the leak-barrier cuffs 60 and the side extension 61 are formed from the cover sheet 32, but the leak-barrier cuffs 60 may be formed from a sheet material separate from the cover sheet 32. In such a case, since the leak-barrier cuffs 60 mainly prevent leakage of excrement, they are not necessarily formed of a liquid-impervious sheet. Alternatively, an elastic stretchable sheet may be used as the free portion 63 of the leakproof cuff 60 or the cuff elastic body 64. The covering sheet 32 is bent toward the non-skin-to-skin-rear-surface side of the liquid absorbing structure 30, the main body 41 in which the liquid absorbing structure 30 is disposed, both side portions 42 located on both sides in the lateral direction X of the main body 41. And an outer edge 42A.

The side extension 61 of the absorbing panel 16 includes the hydrophilic layer 50 including the extension 31A of the inner sheet 31 and the extension 36A of the core cover sheet 36, and the hydrophilic layer 50 in the thickness direction Z. And covering

hydrophobic layers

51 and 52. The

hydrophobic layers

51 and 52 are a first hydrophobic layer (lower layer) 51 covering the non-skin opposing surface side of the hydrophilic layer 50 and a second hydrophobic layer covering the skin opposing edge side of the hydrophilic layer 50. (Upper layer) 52. The first hydrophobic layer 51 has a three-layer structure composed of the main portion 41 of the covering sheet 32, the outer edge 42A and the leakproof film 34, and the second hydrophobic layer 52 has both sides of the covering sheet 32. It has a two-layer structure composed of a part 42. Between the side edge of the leakproof film 34 forming the first hydrophobic layer 51 and the outer edge 42A of the covering sheet 32, a plurality of leg elastic bodies 65 are attached in an expandable state so as to be contractible. . The side extension portion 61 of the absorbing panel 16 has elasticity in at least the longitudinal direction Y by the contraction action of the leg elastic body 65 located in the first hydrophobic layer 51.

In the wearing condition of the diaper 10, the leakage preventing cuffs 60 are erected toward the body of the wearer by the contraction action of the cuff elastic body 64, and the side extension 61 is formed of the thigh by the contraction force of the leg elastics 65. It is fitted near the base. As described above, since the leg opening edge of the diaper 10 is in contact with the body in a relatively wide range by the leak-barrier cuffs 60 and the side extension 61, the lateral leak for excrement due to the leak-barrier cuffs 60 alone. Side leakage can be more effectively prevented compared to the case of preventing

The side extension 61 has the first hydrophobic layer 51 covering the non-skin opposing surface side of the hydrophilic layer 50 and the second hydrophobic layer 52 covering the skin opposing surface side of the hydrophilic layer 50. In the hydrophilic layer 50, it is possible to suppress the leakage and absorption of the absorbed body fluid to the both side edges thereof to the outside. Furthermore, in the side extension portion 61, the first and second

hydrophobic layers

51, 52 are formed by bending the covering sheet 32 so as to cover the entire hydrophilic layer 50, and the lateral direction of the hydrophilic layer 50 is obtained. Since the hydrophobic layer is also located outside X, no body fluid leaks to the outside.

FIG. 5 (a) is a plan view of the diaper 10 according to this embodiment in a non-stretched state, and FIG. 5 (b) is a case where clothes (trousers) 92 are worn on a doll 91 in which the diaper 10 is pierced. FIG. 6A is a plan view of the diaper 110 which is an example of a conventional diaper in a non-stretched state, and FIG. 6B is a diagram of the conventional diaper 110. FIG. 7A is a view showing an aspect of measuring a change in the outline line of clothes in the case where the clothes 91 are worn on a doll 91 in which FIG. 7B is a plan view of FIG. 7B is a view showing an aspect of measuring a change in outline of clothes when the clothes 92 are worn on the doll 91 having the underwear 210 pierced.

In FIG. 5 (b), a measuring doll 91 having a form of the lower body of an average woman is arranged to be separated by 23 mm at a position closest to the wall surface 90 located on the back surface thereof. Next, after the diaper 9 is made to penetrate the doll 91, it is the closest to the wall surface 90 with the clothes (trousers) 92 preferably made of a stretchable material that fits the doll 91. The separation distance R1 (mm) of the position U1 was measured. Also in FIG. 6 (b) and FIG. 7 (b), under the same conditions as in the case of the diaper 10, the conventional diaper 110 and the undergarment 210 are respectively pierced in the doll 91 and measured. The separation distances R2 and R3 (mm) were measured. The garment 92 was of a type with a relatively shallow rise for women (so-called low rise type), and had a size of a rise of 210 mm.

Referring to FIG. 5 (a), the diaper 10 is divided in a front view into an upper portion 81 consisting of the front waist panel 14 and a lower portion 82 located below the same, for convenience of description. The diaper 10 has a first dimension (longitudinal dimension of the upper portion 81) L1 of 110 to 140 mm, which is a dimension in the longitudinal direction Y from the upper edge 14b to the lower edge 14a of the front waist panel 14 in a non-stretched state (contracted state). , The second dimension (longitudinal dimension of the lower portion 82) L2 which is the distance from the lower edge 14a of the front waist panel 14 to the lower end (point on the transverse center line Q) of the absorbent panel 16 is 140 to 150 mm The third dimension L3 which is the length dimension in the transverse direction X of the portion (overlapping portion) of the lower end edge 14a of the waist panel 14 overlapping with the absorption panel 16 is 120 to 140 mm, of the lower end edge 14a of the front waist panel 14 The fourth dimension (the width dimension of the leg opening) L4, which is the dimension in the lateral direction X of one non-overlapping portion of the pair of non-overlapping portions located outside the lateral direction X of the overlapping portion, is 50 to 9 A mm. The first dimension L1 and the second dimension L2 were measured along the longitudinal center line P.

Further, although not shown, when the diaper 10 is stretched in the longitudinal direction Y and the transverse direction X, the dimension W1 of the front waist region 11 (or the rear waist region 12) in the transverse direction X is 550 to 740 mm, the first The dimension L1 is 180 to 210 mm, the second dimension L2 is 170 to 190 mm, the third dimension L3 is 190 to 210 mm, and the fourth dimension L4 is 170 to 270 mm.

6A, the diaper 110 of Comparative Example 1 has the same basic structure as the diaper 10 according to the present embodiment (however, it does not have the structure related to the side extension 61). , A front waist panel 114 forming the front waist region 111, a rear waist panel forming the rear waist region, and an absorbent panel 116 attached to the skin facing surface side of the front and rear waist panels 114. The front waist panel 114 and the rear waist panel are joined to each other via side seams 125 whose side edges are discontinuous in the longitudinal direction Y, and the absorbent panel 116 is located on the skin facing surface side of the front waist panel 114 It has a front end 119A, a rear end located on the skin facing surface side of the rear waist panel, and a central portion 119C located between the front end 119A and the rear end. On the front waist panel 114, a plurality of front upper waist elastic bodies 120A extending in the lateral direction X on the waist opening side and a front lower waist elastic body 120B extending in the lateral direction X below the front upper waist elastic body 120A are disposed. The front lower waist elastic body 120B is cut and removed at a portion of the front waist panel 114 overlapping the front end 119A of the absorbent panel 116, and the rear waist panel has a similar configuration. Also, the conventional diaper 110 is divided into an upper portion 181 consisting of a front waist panel 114 and a rear waist panel and a lower portion 182 located below the upper portion for convenience of explanation.

The conventional diaper 110 has the dimensions of an average adult diaper, and in the non-stretched state, has a size in the longitudinal direction Y from the upper edge 114 b to the lower edge 114 a of the front and rear waist panels 114 One dimension (longitudinal dimension of the upper portion 181) M1 is 150 to 170 mm. In addition, a second dimension (lower portion) which is a distance dimension from the lower end edge 114a of the front waist panel 114 to the lowermost end of the absorbent panel 116 (point T2 on the transverse center line bisecting the longitudinal dimension of the entire diaper 110). The third dimension M3 is 140 to 150 mm and the length dimension in the transverse direction X of the portion (overlapping portion) of the lower edge 114a of the front waist panel 114 overlapping the absorbing panel 116 is 140 to 150 mm. 160 mm, a fourth dimension (leg) of the dimension in the lateral direction X of one non-overlapping portion of the pair of non-overlapping portions positioned outside in the lateral direction X of the overlapping portion of the lower end edges 114a of the front and rear waist panels 114 The dimension of the opening M4 is 80 to 90 mm. The first dimension M1 and the second dimension M2 were measured along a longitudinal center line J extending vertically from the upper end edge 114b to the lower end edge 114a, which divides the lateral dimension into two equal parts.

Referring to FIG. 7 (a), a general undergarment for women 210 has front and

rear waist areas

211 and 212 and a crotch area 213, and the waist opening edge and the leg opening edge are the undergarment body. Separate

elastic sheets

220 and 221 are attached so as to be stretchable. The underwear 210 has an upper portion 281 extending from the upper edge 214 b of the front waist area 211 to the upper edge of the leg opening in a front view, and a lower portion 282 located below the upper portion 281. Here, in the undergarment 210, the lower end edge of the front waist area 211 means the lower end edge 214a connecting the upper ends of the pair of leg openings.

In the undergarment 210, the first dimension (longitudinal dimension of the upper portion 281) N1 is 100 to 120 mm in the front waist region 211, which is the vertical dimension from the upper edge 214b to the lower edge of the front waist region 211 in the non-stretched state. A second dimension (longitudinal dimension of the lower portion 282) N2 which is a separation dimension from the lower end edge to the lowermost end of the crotch area 213 (point T3 on the transverse center line bisecting the longitudinal dimension of the entire undergarment 210) The dimension N3 of the lateral direction X of the portion located at the boundary with the crotch region 213 of the lower end edge of the front waist region 211 is 110 to 160 mm, and the lateral direction of the portion located outside the lateral direction X of the portion The dimension in the direction X (width dimension of the leg opening) N4 is 72 to 88 mm. The first dimension N1 and the second dimension N2 were measured along a longitudinal center line J extending vertically from the upper end edge 214b to the lower end edge 214a, which equally divides the lateral dimension into two.

2. Description of the Related Art In recent years, clothing such as underwear, clothes, and the like which are relatively shallow, low rise type worn on the waist with the upper end hooked on the hip bone is increasing mainly for women. On the other hand, the conventional pants-type diaper is designed to have a relatively large size in the longitudinal direction of the waist area, and when wearing low-rise type clothing, part of it may run out of the clothing from above was there. Moreover, when the width of the crotch region of the diaper is relatively large, the crotch is stiff and gives discomfort, and a part is folded or bent, and a step-like outline line appears on the surface of the clothing, It may be recognized that the diaper is worn in external appearance. For relatively young women (in their 40s and 60s) who prefer low-rise type clothing and are the first to wear a diaper for light incontinence, when worn, they will be part of the low-rise type clothing to the diaper However, it has been a psychological burden that others know that they are wearing a diaper because of the protrusion of the outer layer or the formation of a step-like outline line on the surface of the clothes. Therefore, even when low-rise type clothes are worn, a diaper having a feeling of wearing like an undergarment is desired, in which a part of the garment may protrude or the crotch may not be formed to form a step-like outline line. .

Referring to FIG. 7A, in the measurement on the doll 91 in which the underwear 210 is pierced, the separation dimension R3 between the wall surface 90 and the closest position U3 is 18 mm, and part of the underwear 210 is from above the clothes 92. It did not go out. As described above, in a state in which the clothes 92 are attached to the doll 91 in which the underwear 210 is worn, the underwear 210 is not fitted to the doll 91 of the underwear 210 on the back side by being fitted to the doll 91. Parts do not form a step, do not protrude backward, and can give an overall slim impression. When the undergarment 210 is worn, a part of the undergarment 210 does not protrude from the upper side of the clothes 92. In the undergarment 210, since the first dimension N1 is smaller than the second dimension N2, a low rise type as a whole is It is conceivable to make a shape. Further, since the total dimension of the first dimension N1 and the second dimension N2 is 230 to 270 mm, the lower portion 282 of the undergarment 210 does not stick in the low-rise type garment 92 having a crotch dimension of 210 mm. It is considered that a step or the like due to a portion that fits on the doll 91 and is doubled on the surface of the clothes 92 is not formed. In addition, as a result of performing the same measurement on a plurality of underwear 210 having different sizes, the applicant found that the total size of the first dimension N1 and the second dimension N2 is in the range of 250 to 290 mm. It has been found that the lower part 282 does not fit into the doll 91 and does not double.

Therefore, in the

diapers

10 and 110, the first dimension L1, 1 of the

diapers

10 and 110 is such that the

lower portions

82 and 182 do not have tabs in the garment 92, as in the undergarment 210. It is considered necessary that M1 be smaller than the second dimensions L2 and M2 and that the total dimension of the first dimensions L1 and M1 and the second dimensions L2 and M2 be in the range of 250 to 290 mm.

In the conventional diaper 110, the first dimension M1 which is the dimension of the upper portion 181 of the front waist area 111 in the longitudinal direction and the second dimension M2 which is the dimension of the lower portion 182 in the longitudinal direction Y have the first dimension M1. Is smaller than the second dimension M2, and the first dimension M1 + the second dimension M2 is at least 290 mm or more. Referring to FIG. 6 (b), in the doll 91 in which the conventional diaper 110 is bored, the lower portion 182 doubled on the back side of the clothes 92 appears as a step on the surface and protrudes backward. It is an aspect. Therefore, the separation dimension R2 of the position U2 closest to the wall surface 90 of the doll 91 is 5 mm. In addition, since the first dimension M1 is larger than the second dimension M2, a part 110A of the diaper 110 is protruded from the upper side of the clothes 92. Thus, the conventional diaper 110 does not fit the doll 91, and the lower part 182 does not give a dull impression as a whole on the back side, and the part 110A protrudes from the clothes 92. By doing so, the appearance may be greatly impaired.

On the other hand, in the diaper 10 according to the present embodiment, the first dimension L1 which is the dimension of the upper portion 81 of the front waist region 11 in the longitudinal direction and the second dimension L2 which is the dimension of the lower portion 82 in the longitudinal direction Y The first dimension L1 is smaller than the second dimension L2, and the first dimension L1 + the second dimension L2 is in the range of 250 to 290 mm. Referring to FIG. 5B, in the doll 91 in which the diaper 10 is bored, the separation dimension R1 between the wall surface 90 and the wall surface 90 at the closest position U is 15 mm. 82 did not double, and a step due to the lower portion 82 was not formed. In addition, a part of the diaper 10 did not protrude from above the clothes 92. In this way, by fitting the diaper 10 to the doll 91, the doubled portion of the garment 92 does not appear as an outline line, giving a clear impression and a part of the diaper 10 from the garment 92. It does not go out and damage the appearance.

Further, in the undergarment 210, the width dimension of the leg opening is designed to be relatively large so that the leg can be easily inserted from the leg opening even in the non-elongated state, specifically, the leg The fourth dimension N4, which is the width dimension of the opening, has a size of about 45 to 80% of the third dimension N3, which is the width dimension of the crotch. In the diaper 10, the fourth dimension L4 is about 45 to 80% of the third dimension L3, and when worn, it can be said that it is easy to insert the leg into the leg opening like the undergarment 210. According to the knowledge of the applicant, when the fourth dimension N4 is 45% or less of the third dimension N3, the leg opening is relatively narrow and it is difficult to insert the leg, On the other hand, if the size ratio is 80% or more, it may be said that there is a possibility that the leg opening becomes too large and the crotch portion becomes relatively narrow and bites into the body during wearing.

Moreover, in the diaper 10 which concerns on this embodiment, since it mainly targets light incontinence of an adult, the absorber 33 located in the absorption panel 16 is thin compared with the diaper which is not for light incontinence, and its maintenance Even if the amount of water is relatively low and the body fluid is diffused throughout the absorber 33, the crotch portion does not sag downward due to its own weight. Specifically, the water retention amount of the absorber 33 is 150 to 400 g. On the other hand, in the conventional diaper 110, the absorber is relatively thick, the water retention amount is 500 to 1200 g, and the whole lower portion 182 is lowered by the weight of the absorber under the condition that the body fluid is diffused to the entire absorber. Because of the distorted shape that hangs down, the outer appearance of the conventional diaper 110 may appear more clearly in the appearance of the garment 92. In the case of a general elderly person, the amount of voided urine at one time is about 100 to 200 g, and the diaper 10 can sufficiently absorb and retain the amount of voided urine.

<Method of measuring water retention capacity of absorber>
First, both side edges where the side seam 25 is located are cut out from the diaper 10, and the front and rear waist elastics 20, 23 and the leg elastics 65 are cut so that the contraction force of each elastic body does not act. Get a sample. Next, the weight of the sample was measured (E), and the whole sample was immersed in saline (0.9% NaCl solution) poured into a plate-like container for 30 minutes. Next, after 30 minutes, both sides of the waist end of the sample were fixed to a clip fixed to a bag and left for 10 minutes while being suspended. Finally, the sample was placed in a dehydrator (150 G) and dehydrated for 90 seconds, and the weight (F) was measured. The water holding capacity of the absorber was determined by the formula of F (g) -E (g). In addition, also about the conventional diaper 110, the water retention amount was calculated | required by the same measuring method.

Moreover, in the diaper 10 of this embodiment, it is preferable that the extension stress of the expansion-contraction area in which the back lower waist elastic body 23B is arrange | positioned is lower than the expansion stress of the expansion-contraction area in which the front lower waist elastic body 20B is arrange | positioned. The rear end 19B and the front end 19A of the absorbing panel 16 intersect the lower front and rear waist

elastic bodies

20B and 23B and the size in the lateral direction X is reduced by the contraction force, and the amount of contraction of the rear end 19B is the front end Because the lateral dimension of the rear end 19B becomes smaller than the lateral dimension of the front end 19A, the entire heel area can be covered for the wearer before wearing, And, it can be visually recognized that the body fluid excreted to the rear waist region 12 side can be sufficiently absorbed and held, and a sense of security can be given. In addition, since the lateral dimensions of the front and rear end portions 19A and 19B seen through from the front and

rear waist panels

14 and 15 are different, the front and rear of the diaper 10 can be easily identified. Moreover, in addition to the see-through front end portion 19A being narrower than the rear end portion 19B, the dimension of the absorbent panel 16 in the lateral direction X is relatively small, so that the impression is clear in the front view of the diaper 10 Can be given. Therefore, even when the wearer wears a garment that fits the body, the outer shape of the diaper 10 is not clearly visible from above the garment, and the wearer wears the diaper 10 for the first time You can reduce the resistance to doing things.

<Method of measuring the extension stress in the stretch zone>
It measured by the following method using the tension tester (made by Shimadzu Corp. make) for the extension stress of each expansion-contraction area | region. First, the seam 25 is peeled off in the diaper 10 (M size of a normal adult diaper and the lateral dimension W1 is 600 mm) to separate the front and

rear waist panels

14 and 15, and the front and

rear waist panels

14 and 15 After the front and rear end portions 19A and 19B of the absorbent panel 16 joined to the inner surface with an adhesive are removed from the both

waist panels

14 and 15, front and rear lower waist

elastic bodies

20B and 23B are formed from the front and

rear waist panels

14 and 15, respectively. Each of the arranged stretch zones was cut into a width of 140 mm to obtain each sample. Next, in a state where one end of the sample is held by the movable jig (upper chuck) and the other end is held by the fixed jig (lower chuck), the distance between the chucks is 300 mm, and the movable jig has a speed of 300 mm. Move up by / min, separate distance between chucks to 425 mm, reverse motion, move back to close to 300 mm between chucks, reverse motion again, and separate until the distance between chucks is 425 mm The tensile stress (N) at the time of loading was measured.

As a result of this measurement, the extensional stress of the stretchable area in which the rear lower waist elastic body 23B is disposed is about 16 N / m, and the extensional stress of the stretchable area in which the front lower waist elastic body 20B is disposed is about 21 N / m. . Moreover, as a result of the same measurement method, the former is about 3.5 N / m, the latter is about 10 N / m, and the former is about 18 N / m, the latter is about 23 N for the diaper 10 of L size. It was / m.

In the conventional diaper 110, since the front lower waist elastic body 120B is cut and removed in the region where the front end 119A of the absorbent panel 116 is present, the above technical effects of the diaper 10 can not be obtained. In the conventional diaper 110, the front lower waist elastic body 120B is disposed at the front end portion 119A of the absorbent panel 116 and the rear lower waist elastic body disposed at the rear waist panel when crossing the rear end portion of the absorbent panel 116. Also, if they have the same elongation rate as each other, the same effect as the diaper 10 can not be obtained.

Referring again to FIG. 2, as described above, the side edges 35 c and 35 d of the liquid absorbent core 35 have a shape that is curved inward in the lateral direction X, and are prevented at the central portion of the crotch region 13. It is most distant from the proximal end 62 of the leak cuff 60. The liquid-absorbent core 35 is semi-rigid, which is higher in rigidity than the sheet member, and when the liquid-absorbent core 35 is positioned near the proximal end 62, the proximal end 62 is affected by the rigidity and stands up. Although there is a possibility that it will be difficult to do this, the base end 62 and the liquid-absorbent core 35 are most separated in the central part of the crotch region 13 where the body fluid is accumulated most, so that the standing of the leakproof cuffs 60 is inhibited. Can prevent the side leakage of body fluid.

Further, in the present embodiment, the outer joint area 46 located in the side extension 61 and the inner joint area 47 forming the proximal end 62 of the leak-barrier cuff 60 are separated from each other in the lateral direction X. Thus, by separating the outer joint area 46 and the proximal end 62, the side extension 61 and the leak-barrier cuff 60 are independent of each other without being affected by the extension and contraction of each other. You can stand up. However, in order to simplify the manufacturing process of the diaper 10, the outer joint area 46 and the inner joint area 47 are continuous, as long as the side extension 61 and the leak-barrier cuffs 60 stand independently of each other. It may be applied to the covering sheet 32.

Referring again to FIG. 4, the absorber 33 is relatively thin because the water retention amount of the absorber 33 is relatively small, and the side panel has a multilayer structure on both sides where the leg elastic bodies 65 of the absorbent panel 16 are disposed. Due to the position of the protrusion 61, the thickness dimension of the both sides of the absorbent panel 16 is larger than the thickness dimension of the central portion. Specifically, the thickness dimension D1 of the central portion of the absorbent panel 16 is about 2.0 to 4.0 mm, and the thickness dimension D2 of both side portions is about 5.0 to 7.0 mm. Here, the central portion of the absorbent panel 16 is a region in which the absorbent body 33 is disposed, and means a portion located between both side portions (portion where the side extension portion 61 is disposed), and at least a longitudinal section It means a region including the point where the centerline P and the transverse centerline Q intersect.

Thus, on the skin-facing surface side of the front and

rear waist regions

11 and 12, the leakproof cuffs 60 are laid down because the thickness dimension D2 of both sides of the absorption panel 16 is larger than the thickness dimension D1 of the central portion. At the front and rear end portions 19A and 19B located, space surrounded on both sides is formed between the body and the central portion of the absorbent panel 16, and air is flowed, so that the stuffiness inside the diaper 10 is prevented. Can. In the underwear 210, the thickness dimension of the leg opening edge is larger than the thickness dimension at the center of the crotch region by attaching the elastic sheet 221 separate from the underwear main body to the leg opening edge. . Specifically, the thickness dimension of the central part of the crotch region is 0.8 to 1.2 mm, and the thickness dimension of the leg opening edge is 1.2 to 1.9 mm. Therefore, in the crotch region of both the diaper 10 and the underwear 210, since the leg opening edge is thicker than the central part, it can be said that the diaper 10 easily conforms to the underwear and conforms to its movement.

On the other hand, the conventional diaper 110 is relatively thick because the water retention amount of the absorber is relatively large, and because it does not have a configuration like the side extension 61 of the diaper 10 In the absorbent panel 116, the thickness dimension of the central portion of the crotch region 113 in which the absorbent body is disposed is larger than the thickness dimension of both lateral portions of the central portion where the absorbent body is not disposed. It has become. Specifically, the thickness dimension of the central portion in the crotch region 113 of the absorbent panel 116 is 7.0 to 10.0 mm, and the thickness dimension of both sides is 1.0 to 3.0 mm. Thus, in the conventional diaper 110, unlike the undergarment 210, the central portion of the absorption panel 116 is thicker than the side portions, so it can be said that it is difficult to conform to the undergarment 210 and difficult to conform to the movement.

In the case of diapers for adults, in order to minimize the thickness dimension of the diaper 10 as much as possible from the viewpoint that it is desired to prevent the wearer from wearing the diaper on the inside of the clothes in the daily life It is preferable to reduce the thickness and / or width of the sexing core. However, when the thickness dimension or the like of the liquid-absorbent core is reduced, the amount of liquid absorbed by the body fluid may decrease, and the body fluid may not be sufficiently retained. In the diaper 10 according to the present embodiment, it comprises the extended portion 31A of the inner sheet 31 extending outward in the lateral direction X from the side edges 35c and 35d of the liquid absorbent core 35 and the extended portion 36A of the core cover sheet 36. Since the formed hydrophilic layer 50 extends along the side edges 16 c and 16 d of the absorption panel 16 to the side extension 61, the body fluid absorbed in the absorbent core 35 in the hydrophilic layer 50 can be Body fluid that has not been diffused or absorbed into it can be absorbed directly, and body fluid that exceeds the amount absorbed by the absorbent core 35 can be temporarily held. In addition, the side extension 61 is stably in contact with the body, so that the side edges of the crotch area 13 are not caught in the groin during wearing, and the buttocks are not exposed.

<Method of measuring thickness dimension of absorption panel>
The thickness dimension D1 of the center part of the absorption panel and the thickness dimension D2 of both sides were measured by a thickness gauge (PEACOCK DIAL THICKNESS GAUSE diameter 50 mm, measurement pressure 3 g / cm ² ).

In addition to the materials described in the specification, various known materials generally used in this type of article can be used without limitation for each component constituting the disposable wearing article of the present invention. Also, in the specification and claims, terms such as "first", "second", "third" and "fourth" are used merely to distinguish similar elements, positions and the like.

10 Pants-type Wearables for Adults (diapers)
11 front waist area 12 rear waist area 13 crotch area 14 front waist panel 14a lower edge of lower front panel (lower edge)
14b Upper edge of front waist panel (upper edge)
15 rear waist panel 16 absorption panel 19A front end 19B rear end 20 front waist elastic body (waist elastic body)
20B Front lower waist elastic 23 Rear elastic (waist elastic)
23B back lower waist elastic body 31 inner sheet 31A inner sheet extended portion 32 cover sheet 33 absorber 34 leakproof film 35 liquid absorbing core 36 core cover sheet 36A core cover sheet extended portion 50 hydrophilic layer 51 first layer Hydrophobic layer 52 Second hydrophobic layer 60 Leakproof cuff 61 Side extension 62 Base end 63 Free part 64 Cuff elastic body 65 Leg elastic body D1 Thickness of central part of absorption panel D2 Side of absorption panel Thickness dimension L1 first dimension L2 second dimension L3 third dimension L4 fourth dimension X horizontal direction Y longitudinal direction Z thickness direction

Claims

A crotch region is positioned between the front waist panel forming the front waist region, the rear waist panel forming the rear waist region, and the front and rear waist panels, having a longitudinal direction and a lateral direction, to form an absorbent body; An adult pants-type wearing article including an absorbent panel having the
In the non-stretched state, a first dimension which is a length dimension from the upper edge to the lower edge of the front waist panel is a length dimension from the lower edge of the front waist panel to the lower edge of the absorbent panel Smaller than 2 dimensions,
The total dimension of the first dimension and the second dimension is 250 to 290 mm, and
With respect to the third dimension which is the lateral length dimension of the portion of the lower end of the front waist panel overlapping the absorbent panel, the lateral outside of the overlapping portion of the lower end is The fourth dimension which is the lateral dimension of one non-overlapping portion of the pair of non-overlapping portions positioned is 45 to 80% in size,
The water retention capacity of the absorber is 150 to 400 g,
In the front waist area, the extensional stress of the arranged stretch area of the front waist elastic body extending in the lateral direction is greater than the extension stress of the stretchable area in which the rear waist elastic body extends in the lateral direction in the rear waist area. The said worn article characterized by being high.
The absorbent panel has both side portions located on the outer side in the lateral direction of the absorber, and the leg elastic body extending in the longitudinal direction is disposed on the both side portions, and the thickness direction of the both side portions The wearing article according to claim 1, wherein the dimension at is larger than the dimension in the thickness direction of the central portion of the absorbent panel.
In the stretched state, the first dimension is 180 to 210 mm, the second dimension is 170 to 190 mm, the third dimension is 190 to 210 mm, and the fourth dimension is 170 to 270 mm. Wearing item as described.
The absorbent panel further includes a pair of leak-barrier cuffs extending in the longitudinal direction on the skin-facing surface side of the absorbent panel, the leak-barrier cuffs having a longitudinally extending proximal end portion and a plurality of cuff elastic strips extending in the longitudinal direction And a longitudinally extending side extending portion is located outside the lateral direction of the proximal end portion of the leak-barrier cuff. The wear article according to any one of claims 1 to 3, wherein the leg elastic body is disposed.
The wearing article according to claim 4, wherein the side extension part has a hydrophilic layer and a hydrophobic layer which covers the hydrophilic layer in the thickness direction.
A liquid-permeable inner sheet covering the skin-facing surface side of the absorber is provided, and the hydrophilic layer extends from the both side edges of the absorber to the outer side of the inner sheet extending outward in the lateral direction. The wearing article according to claim 5 having a portion.
The absorbent has a liquid-absorbent core and a core cover sheet covering the liquid-absorbent core, and the hydrophilic layer extends outward in the lateral direction from both side edges of the liquid-absorbent core. The wearing article according to claim 5 or 6, having an extended portion of the cover sheet.