JP2015134020A - Disposable underpants type wearing article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable underpants type wearing article which has deformation suppressing means and, even when elongation stress in an elastic area by a waist elastic body is relatively low, both side parts of a waist region are hardly turned up and slip down during wearing.SOLUTION: In a disposable underpants type wearing article, deformation suppressing means 20 is attached near a side edge part 14d of a first waist region 14, and at least a first region 13 of first and second waist regions 13, 14 includes an elastic area having elasticity in a horizontal direction X. The deformation suppressing means 20 is constituted of a sheet member fixed to the first waist region 14, has at least one projectingly bent part 71 which is externally projected and bent from the first waist region 14 by contraction of the elastic area of the first waist region 14, and a space extending in a vertical direction Y is formed between the first waist region 14 and the projectingly bent part 71.

Description

  The present invention relates to a disposable pants-type wearing article, and more particularly, to a disposable pants-type diaper having a waist region deformation suppressing means.

  Conventionally, disposable pants-type wearing articles having a waist region deformation suppressing means are known. For example, in Patent Document 1, a plurality of waist elastic bodies are disposed in the front and rear waist regions, and a disposable disposable member having a pair of deformation suppressing means disposed between a waist opening and a leg opening in the rear waist region. A pants-type wearing article is disclosed. A deformation | transformation suppression means has a proximal part fixed to a part of back waist area via the joining area | region which apply | coated the adhesive agent, and a distal part latched by the front waist area.

JP 2007-222256 A

  According to the wearing article disclosed in Patent Document 1, by using the deformation suppression means of the waist region during wearing, the size around the waist is adjusted to fit the wearer of various sizes, and the slipping is prevented. In addition to being able to prevent, it is possible to sanitize and dispose of the worn article by wrapping the worn article so as to wrap the excrement and keeping it rounded by the deformation suppressing means. In addition, since it can be prevented from being displaced by the deformation suppressing means, by adjusting the number of waist elastic bodies on both sides of the front and rear waist region, the separation dimension, etc., the elongation stress in the elastic region should be set to be relatively low. Can do. In this way, by arranging the waist elastic body relatively sparsely, the elastic region does not become hard or stiff due to an adhesive or the like for fixing the waist elastic body, and the soft skin contact Have

  However, by reducing the elongation stress of the entire elastic region, the fit is low except in the region tightened by the deformation suppressing means, and both sides of the front and rear waist region are folded and extended in the lateral direction during wearing. There is a possibility that gathers occur and the entire diaper is likely to slip off.

  Therefore, an object of the present invention is an improvement of the conventional technology, which has a waist region deformation suppressing means, and even when the elastic region has a relatively low elongation stress due to the waist elastic body, even during wearing. The present invention relates to provision of a disposable pants-type wearing article in which gathers extending in the lateral direction are generated on both sides of the waist region and the entire diaper is not easily slipped off.

  The present invention has a longitudinal direction and a transverse direction perpendicular thereto, a first waist region that is one of the front and rear waist regions, a second waist region that is the other of the front and rear waist regions, and the first and second waists The present invention relates to a disposable pants-type wearing article that includes a crotch region located between the regions, and in which the side edge portions extending in the longitudinal direction in the first and second waist regions overlap and are joined to each other.

  In the disposable pants-type wearing article of the present invention, deformation suppressing means is attached in the vicinity of the side edge of the first waist region, and at least the first waist region of the first and second waist regions is The elastic member includes an elastic region having elasticity in the lateral direction, and the deformation suppressing unit includes a sheet member fixed to the first waist region, and the elastic region of the first waist region contracts to reduce the first region. It has at least one convex curved part that curves outward from the waist region, and a space extending in the vertical direction is formed between the first waist region and the convex curved part. To do.

  According to one or more embodiments of the disposable pants-type wearing article according to the present invention, the deformation suppressing means is attached to the side portion of the first waist region, the deformation suppressing means has a convex curve shape, Since a space extending in the vertical direction is formed between the first waist region and the required rigidity is imparted, even if the fit property by the elastic region of the first waist region is relatively low, the first The formation of recumbency at the side of the waist region can be suppressed, and it is possible to prevent warping and slipping off.

The drawings illustrate specific embodiments of the invention and include selective and preferred embodiments as well as the essential features of the invention.
The perspective view of the disposable diaper seen from the back side shown as an example of the disposable wearing article in 1st Embodiment of this invention. The partially broken expansion | deployment top view which looked at the state which peeled the seam part of the diaper and extended in the front-back direction from the inner surface. The exploded perspective view of a diaper. FIG. 4 is a schematic cross-sectional view taken along line IV-IV in FIG. 2. The figure which looked at the diaper in use condition from the side. Sectional drawing which follows the VI-VI line of FIG. The figure similar to FIG. 6 in 2nd Embodiment. The figure similar to FIG. 6 in 3rd Embodiment. The figure similar to FIG. 6 in 4th Embodiment. The perspective view which unfolded the deformation | transformation suppression means in 4th Embodiment, and looked at the diaper from the front which shows the state hung on the front waist area. FIG. 11 is a schematic cross-sectional view taken along line XI-XI in FIG. 10. The figure which shows the state which rolled the diaper using the deformation | transformation suppression means in 4th Embodiment. The figure similar to FIG. 6 in 5th Embodiment. The figure similar to FIG. 11 in 5th Embodiment. The figure similar to FIG. 6 in 6th Embodiment. The figure which looked at the diaper from the side which shows the state where the deformation | transformation suppression means in 6th Embodiment was expand | deployed and latched in the front waist area. Sectional drawing which follows the XVII-XVII line of FIG. 16 in 6th Embodiment.

<First Embodiment>
1-3, the disposable diaper 10 shown as an example of the disposable pants-type wearing article of this invention has the vertical direction Y and the horizontal direction X orthogonal to it, the vertical axis P, and the horizontal axis Q orthogonal to it. Have.

  The diaper 10 includes a skin-facing surface and a non-skin-facing surface facing the skin, an annular elastic waist panel 11 extending in the direction around the waist, an absorbent chassis 12 joined to the elastic waist panel 11, and a front waist region (first waist). Or one of the second waist regions) 13, a rear waist region (the other of the first or second waist regions) 14, and a crotch region 15 positioned between the front and rear waist regions 13, 14. The diaper 10 is formed symmetrically with respect to the longitudinal axis P, and the elastic waist panel 11 includes a front waist panel 16 located in the front waist region 13 and a rear waist panel 17 located in the rear waist region 14. . Deformation suppression means 20 is fixed to the outer surface of both side portions 18 of the rear waist region 14, respectively. Here, “both side portions 18 of the rear waist region 14” mean portions from both side edges 14 c and 14 d of the rear waist region 14 to both side edges of the absorbent chassis 12. Further, the “deformation suppressing means 20” means a means capable of suppressing the occurrence of recumbency and the deformation of the both side parts 18 that cause the side parts 18 to fall down and droop in the wearing state. .

  The front waist region 13 includes an inner end edge 13a extending in the horizontal direction X, an outer end edge 13b extending in the horizontal direction X so as to be opposed to the inner end edge 13a in the vertical direction Y, and a vertical distance between the inner and outer end edges 13a and 13b. It has a horizontally long rectangular shape defined by both side edges 13c and 13d extending in the direction Y.

  The rear waist region 14 includes an intermediate inner end edge 14a extending in the horizontal direction X, an outer end edge 14b extending in the horizontal direction X while being spaced apart from the intermediate inner end edge 14a in the vertical direction Y, and an inner side from the outer end edge 14b. It has a substantially trapezoidal shape defined by both side edges 14c and 14d extending in a straight line, and both side inner end edges 14e and 14f that bend the both side edges 14c and 14d and the intermediate inner end edge 14a.

  Both side edges 13c, 13d of the front waist region 13 and both side edges 14c, 14d of the rear waist panel 14 are overlapped with each other and are connected by side seams 23 intermittently positioned in the longitudinal direction Y. An edge 19 is formed, and a waist opening 24 and a pair of leg openings are defined. The side seam 23 is made by a known joining means, for example, various heat welding means such as hot embossing / debossing and sonic processing. As shown in FIG. 5, the deformation suppressing means 20 includes a proximal portion 21 fixed to both side portions 18 of the rear waist region 14, and a plurality of convex curved portions that are arranged in the direction around the waist and are curved outward. And a distal portion 22.

  In the present embodiment, the deformation suppressing means 20 is attached to both side portions 18 of the rear waist region 14, but may be attached only to one side portion 18 as long as the effects of the present invention described later are exhibited. And it may be attached to the both sides or one of the front waist regions 13.

  Referring to FIG. 3, the front waist panel 16 has a rectangular front waist sheet 25 that defines the front waist region 13. The front waist seat 25 extends in the horizontal direction X and is opposed to the inner and outer end edges 25a and 25b that are spaced apart from each other in the vertical direction Y, and both side edges 25c and 25d that extend in the vertical direction Y and are positioned between the inner and outer end edges 25a and 25b. Formed from. The front waist sheet 25 further includes a bent portion 26 located on the outer side in the vertical direction from the front end portion 12 a of the absorbent chassis 12. The bent portion 26 is bent inward in the vertical direction Y along a bent line 26 a extending in the horizontal direction X, and is fixed to the front elastic sheet 48 and the absorbent chassis 12 described later. Between the main part 27 and the bent part 26 located inward from the bent part 26 of the front waist seat 25, between the main part 27 and the front end part 12a of the absorptive chassis 12, a plurality of strings are formed. Alternatively, the strand-like front waist elastic body 28 is fixed so as to be contractible in the stretched state in the lateral direction X.

  The rear waist panel 17 has a trapezoidal rear waist sheet 30 that defines the rear waist region 14. The rear waist sheet 30 extends in the horizontal direction X and is opposed to each other in the longitudinal direction Y. The intermediate inner end edge 30a and the outer end edge 30b, both side edges 30c and 30d extending in the longitudinal direction Y, and both outer edges 30c and 30d. Are formed from concavely curved inner end edges 30e, 30f connecting the inner end edge 30a and the inner end edge 30a. The rear waist seat 30 is located outside the main body 31, the longitudinal end Y of the rear end 12b of the absorbent chassis 12, and extends outwardly between the side edges 30c and 30d in the lateral direction X. The inner folding line (not shown) extending in the lateral direction X between the inner end edges 30e and 30f and the inner side of the rear waist seat 30 via the outer folding line 32 are bent to the rear of the absorbent chassis 12. The outer bent portion 33 fixed to the inner surface of the end portion 12b and the inner surface of the main body portion 31 and the inner bent line are bent to the inner surface side of the rear waist sheet 30 and fixed to the inner surface of the main body portion 31. And an inner bent portion 34.

  Between the main body portion 31 of the rear waist sheet 30 and the outer bent portion 33 and the rear end portion 12b of the absorbent chassis 12, a plurality of strand-shaped or string-shaped rear waist elastic bodies 35 are arranged in the lateral direction X. It is arranged to be contractable in the extended state. A string-like or strand-like collar elastic body 36 extending in the lateral direction X is disposed in the inner bent portion 34 so as to be contracted in an extended state.

The front and rear waist sheets 25 and 30 have a mass of about 10 to 40 g / m ² and a fiber density of about 0.03 to 0.1 g / cm ³ , for example, a spunbond fiber nonwoven fabric, SMS (spunbond Meltblown / spunbond) fiber nonwoven fabric, air-through fiber nonwoven fabric, plastic sheet, or laminate sheet thereof can be used. As the front and rear waist elastic bodies 28 and 35, the buttocks elastic body 36, and the elastic body 50 to be described later, for example, in order to obtain a required contraction force or elongation stress, a plurality of strings or strands having a fineness of about 300 to 500 dtex Elastic materials can be used, and they are fixed to the sheet member in a state in which the separation dimension (pitch) is 10 to 15 mm and is extended about 1.5 to 2.5 times.

  The absorbent chassis 12 has a rectangular shape and includes a front end portion 12a, a rear end portion 12b, and an intermediate portion 12c positioned between the front and rear end portions 12a and 12b. The absorptive chassis 12 is located on the skin facing surface side, and is a body side liner 40 made of a fiber nonwoven fabric having liquid permeability, a liquid absorbent absorber 41 having curved side edges, and a bottom surface of the absorber 41. The liquid-proof leak-proof sheet | seat 42 which covers the whole, and the liquid-impervious or hardly liquid-permeable covering sheet 43 which forms the whole non-skin opposing surface of the absorptive chassis 12 are included. The absorbent body 41 includes a core material formed from a mixture of fluff pulp and superabsorbent polymer particles, and a liquid-absorbing and diffusible core wrap sheet such as tissue paper covering the entire core material.

  The covering sheet 43 has both side portions 44 located on the outer side in the lateral direction X from both side edges of the leak-proof sheet 42. The both side portions 44 are bent inward along a folding line (proximal portion) adjacent to both side edges of the leak-proof sheet 42 and fixed to the body side liner 40. Both side portions 44 are spaced apart from each other in the longitudinal direction Y and fixed to the body side liner 40, proximal edges fixed to both side edges of the body side liner 40, and both end fixing portions. And a distal edge 43a extending in the longitudinal direction Y therebetween. The distal edge 43a has a sleeve shape formed by bending the outer edge of the covering sheet 43, and a plurality of string-like or strand-like elastic bodies 45 extending in the longitudinal direction Y extend in the sleeve. It is arranged to be able to contract in a state. When the elastic body 45 contracts, the distal edge 43a is separated from the body-side liner 40 toward the wearer's body, and fits to the wearer's thigh to prevent leakage of excrement. A plurality of string-like or strand-like leg elastic bodies 46 are disposed between the body-side liner 40 and the covering sheet 43.

  The front and rear elastic sheets 48 and 49 attached to the skin facing surfaces of the front and rear end portions 12a and 12b of the absorbent chassis 12 so as to be retractable in the lateral direction X are positioned. The front elastic sheet 48 has a horizontally long rectangular shape, and is fixed to the front waist sheet 25 positioned at least outside the both side edges of the absorbent chassis 12 in the lateral direction X and the skin facing surfaces on both sides of the absorbent chassis 12. The The rear elastic sheet 49 has a substantially trapezoidal shape, and includes an inner inner edge and an outer edge facing each other in the vertical direction Y, both outer edges extending in the vertical direction Y, and both outer edges and inner edge. It is formed from both concave inner curved edges. The rear elastic sheet 49 is disposed such that both outer edges and both inner edges thereof overlap with part of both side edges 30c, 30d and both inner end edges 30e, 30f of the rear waist sheet 30. Between the rear elastic sheet 49 and the rear end portion 12b of the absorbent chassis 12, a plurality of string-like or strand-like elastic bodies 50 extending in the transverse direction X are disposed so as to be contracted in an extended state.

As the front and rear elastic sheets 48 and 49, for example, a stretchable fiber nonwoven fabric made of elastomer fibers having a mass of about 15 to 50 g / m ² can be used. The front and rear elastic sheets 48 and 49 are fixed to the front and rear waist sheets 25 and 30 and the absorbent chassis 12 so as to be shrinkable in a state where the front and rear elastic sheets 48 and 49 are extended about 2.4 times in the lateral direction X as compared with the non-extension dimensions.

  Referring to FIG. 2, the rear waist region 14 includes a waist opening elastic region 47 and a rear upper elastic region 51 to which elasticity in at least the lateral direction X is given by the rear waist elastic body 35, a rear elastic sheet 49 and an elastic body 50. And a lower elastic region 52 after being provided with elasticity in at least the lateral direction X. Each of the elastic regions 47, 51, 52 has a size obtained by dividing the length L1 of the rear waist region 14 in the longitudinal direction Y into three equal parts between the rear side edges 14c, 14d.

  The proximal portion 21 of the deformation suppressing means 20 is positioned so as to overlap with at least a part of the rear upper elastic region 51 in the both side portions 18 of the rear waist region 14 in a plan view. When contracting, it exhibits an undulating shape due to its contracting force. The rear upper elastic region 51 and the rear lower elastic region 52 have the same or different contraction force or elongation stress, fit the diaper 10 without pressing the lower abdomen of the wearer, and at the time of wearing In order to prevent sliding down or the like, it is preferable that the elongation stress of the rear upper elastic region 51 is higher than that of the rear lower elastic region 52. In this way, by attaching the deformation suppressing means 20 to the rear upper elastic region 51 having a relatively high elongation stress, it is possible to prevent crouching due to the occurrence of recumbent and more effectively prevent the diaper from falling down. In addition, when the wearer is a low-age infant of 2 to 6 months after birth, it is easy to feel pressure by tightening the rear lower elastic region 52 where the lower abdomen abuts, so the elongation stress is set lower than usual. It is preferable.

  Referring to FIG. 6, the deformation suppressing means 20 includes an inner layer sheet 54 that forms a proximal portion 21 that is fixed to a side portion 18 of the rear waist region 14 via a joint region 53, and an outer layer that forms a distal portion 22. Sheet 55. The outer layer sheet 55 is bent at both end edges 55 a and 55 b on the surface side facing the bonding area 53 of the inner layer sheet 54, and the first and second fixing parts 61 and 62 formed at both ends of the bonding area 53 are interposed therebetween. Fixed. In addition, the outer layer sheet 55 is fixed to the inner layer sheet 54 via the third and fourth fixing portions 63 and 64 arranged in the direction around the waist between the first and second fixing portions 61 and 62. The deformation suppressing means 20 is composed of two sheets of inner and outer layer sheets 54 and 55, but may be formed from a single continuous sheet as long as the effects of the present invention described later are exhibited.

  The rear waist region 14 is contracted in the lateral direction X by the contracting action of the rear waist elastic body 35, and a plurality of ridges 70 continuous in the lateral direction X are formed. Further, at least one rear waist elastic body 35 is located in the region where the proximal portion 21 of the deformation suppressing means 20 is located in the rear waist region 14, and the deformation suppressing means 20 is contracted by the contraction of the elastic body 35. The inner layer sheet 54 undulates continuously with the rear waist region 14 in the direction around the waist. The portion of the distal portion 22 positioned between the first fixing portion 61 and the third fixing portion 63 is deformed by the proximal portion 21 positioned between the fixing portions 61 and 63 and has a length dimension thereof. As a result, the first convex curve portion 71 is formed in a state of being raised in a convex shape in a direction away from the outer surface of the rear waist region 14. Similarly, between the third fixing portion 63 and the fourth fixing portion 64, and between the fourth fixing portion 64 and the second fixing portion 62, respectively, the second convex portion 72 and the third convex portion 73, respectively. Is formed.

  In the present embodiment, the third and fourth fixing portions 63 and 64 have a plurality of dot shapes that are separated from each other in the longitudinal direction Y. However, as long as the inner and outer layer sheets 54 and 55 are securely fixed, May be continuous in the vertical direction Y.

  In the diaper 10 according to the present embodiment, since the rear waist elastic body 35 is relatively sparsely arranged, the elongation stress of the rear upper elastic region 51 is set to be relatively low, and the elastic material is fixed. Therefore, the both sides of the front and rear waist regions 13 and 14 are not stiffened or stiffened by the hot melt adhesive, and fits flexibly to the wearer's body. On the other hand, since the front and rear waist regions 13 and 14 are not strongly tightened to the wearer's body, both sides are collapsed during wearing and a recumbent is produced, which may cause the entire diaper 10 to slide down. .

  In the deformation suppressing means 20 of the present embodiment, the distal portion 22 has a plurality of convex curved portions 71, 72, 73 arranged in the direction around the waist, so that the vertical portion is provided between the proximal portion 21 and the distal portion 22. Spaces extending in the direction Y are formed, and they serve as ribs extending in the longitudinal direction Y, and suppress the occurrence of lateral reeds in the arrangement region and the vicinity thereof and the deformation of the side portions 18 thereby. In particular, the deformation restraining means 20 is arranged opposite to the wearer's hip bone on both side portions 18 of the rear waist region 14 to inhibit the occurrence of recumbency in the region, thereby suppressing the deformation of the wearer's hip bone. The rear waist region 14 can be fitted in the vicinity, and the diaper 10 can be prevented from sliding down from the waist of the wearer.

  Referring to FIG. 2, in order to exert such an effect, deformation suppression is performed when the dimension W1 in the lateral direction X of the rear waist region 14 of the diaper 10 is about 300 to 420 mm and the dimension L1 in the longitudinal direction is about 70 to 140 mm. The dimension (width dimension) L2 in the longitudinal direction Y of the means 20 is about 10 to 60 mm, preferably 15 to 40 mm, and the dimension (length dimension) W2 in the lateral direction X is about 15 to 80 mm, preferably 25 to 45 mm. is there. In particular, in order to suppress the occurrence of a plurality of recumbent ridges extending around the waist, the width dimension is preferably about 25 to 60% of the dimension in the lateral direction X of both side portions 18 of the diaper 10.

  Referring to FIG. 5 again, the deformation suppressing means 20 includes a plurality of sheets that are adjacent to the waist opening side portion (upper portion) 60A and the leg opening side portion (lower portion) 60B of the rear waist region 14 adjacent thereto. By forming a plurality of ribs that are stacked and have a high mass of the entire sheet and extending in the longitudinal direction Y, it is difficult to crumble, preventing the occurrence of recumbency or crouching by the side portions 18. be able to. On the other hand, the upper and lower portions 60A and 60B positioned above and below have predetermined flexibility, so that the periphery of the deformation suppressing means 20 is not too hard and the wearer rolls his back and the periphery is There is no danger of touching the body.

The inner layer sheet 54 constituting the deformation suppressing means 20 is a fiber nonwoven fabric, for example, a spunbond fiber nonwoven fabric, and an outer layer sheet 55 having a mass of about 10 to 50 g / m ² , preferably about 15 to 30 g / m ^2. A spunbond fiber nonwoven fabric of about 20 to 80 g / m ² , preferably about 30 to 60 g / m ² can be suitably used. In addition, the rigidity of the outer layer sheet 55 is preferably higher than that of the inner layer sheet 54. Since the rigidity of the outer layer sheet 55 is higher than the rigidity of the inner layer sheet 54, the inner layer sheet 54 is likely to be deformed by the contracting action of the rear upper elastic region 51, while the outer layer sheet 55 is not deformed following the inner layer sheet 54. It becomes easy to bend outward. The difference in stiffness between the inner and outer layer sheets 54 and 55 can be measured by a KES stiffness / softness measurement method described later.

For example, a hydrophobic hot melt adhesive having a mass of about 5 to 20 g / m ² can be used for the bonding area 53. The 1st-4th fixing | fixed part 61,62,63,64 can be provided by apply | coating a hot-melt-adhesive or performing a well-known pressurization process and a pressurization heating process. The first and second fixing portions 61 and 62 need to be fixed so that the inner and outer layer sheets 54 and 55 are not peeled off. On the other hand, in the third and fourth fixing portions 63 and 64, for example, emboss / By providing by debossing or sonication, it may be temporarily fixed. When the deformation suppressing means 20 itself has a thermoplastic synthetic fiber, it is subjected to a pressure heat treatment so that the fibers are thermally fused to each other. By wearing it, it can be fixed temporarily. When the third and / or fourth fixing portions 63, 64 are temporarily fixed, the first to third convex curved portions 71, 72, 73 communicate with each other to form one loop shape, and the distal portion Even if 22 has such a configuration, the effects described above can be obtained. Also, three or more convex curved portions may be formed by fixing the outer layer sheet 55 to the inner layer sheet 54 via four or more fixing portions that are spaced apart in the waist direction.

  The diaper 10 according to each of the following embodiments has the same basic configuration as that in the first embodiment, and only differences will be described.

Second Embodiment
Referring to FIG. 7, in the present embodiment, the deformation suppressing means 20 is formed from a single base sheet 75. Both ends 75a and 75b of the base sheet 75 are fixed directly to the outer surface of the rear waist region 14 by adhesion or fusion via the first and second fixing portions 76a and 76b. Further, the base sheet 75 is fixed to the rear waist region 14 so as to be separable / unseparable at a third fixing portion 76c located between the first and second fixing portions 76a and 76b (approximately the center thereof). Thus, even when the deformation suppressing means 20 is formed from a single sheet member, a plurality of loops extending in the vertical direction Y are formed and serve as ribs. Similarly to the embodiment, it is possible to suppress the occurrence of lateral reeds and the deformation thereof at both side portions 18 of the rear waist region 14 and to prevent the side portions 18 from falling over.

<Third Embodiment>
Referring to FIG. 8, in this embodiment, the deformation suppressing means 20 is formed from a single base sheet 77. The base sheet 77 includes a proximal portion 21 fixed to the outer surface of the rear waist region 14 through a bonding region 53 to which a hot melt adhesive is applied, and a distal portion 22 bent outward through a bent portion 78. And have. Both end portions 77a and 77b of the base sheet 77 are overlapped with each other and joined together with the side edges 13d and 14d of the front and rear waist regions 13 and 14 at the side seam 23. In such a case, since both end portions 77a and 77b of the base sheet 77 are stably joined at the side seam 23, a force for peeling the end portions 77a and 77b acts on the both end portions 77a and 77b while the diaper 10 is worn. Even if it does, there is no possibility that it may be separated from the outer surface of the rear waist region 14. In addition, since a single loop extending in the vertical direction Y is formed, the occurrence of lateral reeds on both side portions 18 and deformation thereof can be suppressed.

<Fourth embodiment>
Referring to FIG. 9, the present embodiment includes a base sheet 80 which is a single tape fixed to the outer surface of the rear waist region 14 in a state of being folded into a Z-shaped cross section. Although the base sheet 80 may be formed from a plastic sheet, it is preferable that the base sheet 80 be formed from a fiber nonwoven fabric sheet that is more flexible than the plastic sheet in consideration of skin contact with the wearer's body. The deformation suppressing means 20 has a proximal portion 21 fixed to the outer surface of the rear waist region 14 via a joint region 53 and a distal portion 22 extending from the proximal portion 21 in the length direction of the deformation suppressing means 20. . The distal portion 22 is bent at the first and second bent portions 80a and 80b, and is connected to the proximal portion 21 and is opposed to the first distal portion 81 facing the deformation suppressing means 20 in the thickness direction Z. The second distal portion 82 is connected to the first distal portion 81 and is opposed to the first distal portion 81 in the thickness direction Z. The proximal portion 21, the first and second distal portions 81 and 82 are temporarily attached by the first and second temporary fixing portions 84 and 85 located in the first and second bent portions 80a and 80b in the stacked state. Stopped. The distal portion 22 further includes a gripping portion 83 extending from the second temporary fixing portion 85 located at the second bent portion 80b toward the side seam 23 side. A hooking area (fastening area) 88 formed from a hook element of a mechanical fastener or a pressure-sensitive adhesive is disposed on the inner surface of the second distal part 82 between the first and second temporary fixing parts 84 and 85. . In the present embodiment, a hook sheet having a hook element is disposed in the latching area 88.

  In the present embodiment, the proximal portion 21 located between the first temporary fixing portion 84 and the second temporary fixing portion 85 contracts with the rear waist region 14 to reduce the length dimension thereof, thereby facing it. The portion of the distal portion 22 that is bent bends in a direction away from the rear waist region 14 to form a bent portion. By forming the convex curved portion, it can serve as a rib extending in the longitudinal direction Y while the diaper 10 is worn, and can prevent occurrence of recumbency in the arrangement region.

  Referring to FIGS. 10 and 11, the first and second temporary fixing portions 84, 85 are released, the deformation suppressing means 20 is expanded, and the expanded deformation suppressing means 20 is latched to the second distal portion 82. It can be hooked on the outer surface of the front waist region 13 via the region 88. When the base sheet 80 of the deformation suppressing means 20 is made of a non-woven fiber fabric, the outer surface of the curved front waist region 13 is more flexible than when it is formed of a relatively rigid plastic sheet. , And does not hinder the contraction of the diaper 10 in the lateral direction X (trunk circumference direction), and can also be configured as a deformation restraining means for preventing warping. As described above, the proximal portion 21 is easily deformed in accordance with the contraction of the rear waist region 14, and a force for pulling it toward the rear waist region 14 acts on the entire distal portion 22. Accordingly, the distal portion 22 hooked to the outer surface of the front waist region 13 is pulled rearward, and the both side portions 18 of the diaper 10 are drawn between the proximal portion 21 and the distal portion 22. The areas 13 and 14 can be fitted to the wearer's body, and the size adjustment is easy. In this manner, the deformation suppressing means 20 can prevent the rear waist region 14 from falling over in a state where it is not expanded, while it is expanded and the latching region 88 is hung on the outer surface of the front waist region 13. By stopping, the size can be adjusted by reducing the size around the waist, and either of these usage modes can be selected alternatively.

<Bending stiffness value>
As described above, since the deformation suppressing means 20 is formed from a fiber nonwoven fabric, the deformation suppressing means 20 is superior in flexibility as compared to the case where it is formed from a plastic film. Further, the deformation suppressing means 20 has the highest rigidity. The portion to be formed is a portion where the hook sheet of the latching area 88 is located (high rigidity portion). By using a relatively flexible material as the hook sheet, the flexibility in the width direction of the deformation suppressing means 20 is further increased. Can be improved.

Specifically, in the folded state of the deformation suppressing means 20, the KES bending rigidity in the longitudinal direction Y (the width direction of the deformation suppressing means 20 and the side edges approach each other) except for the high rigidity portion. The value is 0.04 to 0.44 gf · cm ² / cm, and the KES bending rigidity value in the longitudinal direction Y of the high-rigidity portion (the width direction of the deformation suppressing means 20 and the side edges approach each other) is about 0. .56 to 1.8 gf · cm ² / cm. Since the KES bending rigidity value in the folded state of a tape fastener formed from a plastic film, which is conventionally used for disposal or size adjustment, is about 2.0 gf · cm ² / cm, this implementation The deformation suppressing means 20 in the form has a lower bending rigidity value in the width direction than the conventional tape fastener, and is excellent in flexibility. In order to obtain such a bending rigidity value, it is preferable to use a spunbonded nonwoven fabric having a mass of about 30 to 100 g / m ² for the base sheet 80, and at a given distance from both side edges of the deformation suppressing means 20 in a folded state. And it is preferable that the 1st and 2nd temporary fix | stop parts 84 and 85 are located, and the whole opposing surface of the laminated | stacked part is not temporarily fixed.

<Measurement method of bending stiffness value>
The bending stiffness values of the deformation suppressing means 20 and the upper and lower side portions 60A and 60B adjacent thereto were measured based on the KES method. The details of the KES method used for this measurement are explained in "Standardization and Analysis of Texture Evaluation" 2nd Edition (issued by the Japan Textile Machinery Society, Texture Measurement and Standardization Research Committee issued on July 10, 1980) ing. Therefore, only the measurement conditions related to this measurement will be described below for the measurement method for each mechanical property.

The measurement of the bending property (KES stiffness value) was performed by removing the deformation suppressing means 20 from the diaper 10 using KES-FB2 manufactured by Kato Tech Co., Ltd. A sample was cut out from At this time, the upper and lower side portions 60A and 60B were cut out so that the width dimensions of the samples were substantially the same as the width dimensions of the deformation suppressing means 20 so that the width dimensions (dimensions in the vertical direction Y) of the samples were the same. Each sample was fixed between chucks of 1cm intervals, bending the front side up to maximum curvature + 2.5 cm ^-1, was then carried out by returning to the original after bent back until maximum curvature -2.5 cm ^-1. The sample was measured in a vertical state to reduce the influence of gravity, and the bending stiffness B [gf · cm ² / cm] was measured when the inclination of the bending moment with respect to the curvature became almost constant after starting to bend to the front side. Calculated from the slope. The bending stiffness B is measured with respect to the longitudinal direction Y of the diaper (the width direction of the deformation suppressing means 20).

  Referring to FIG. 12, an example of an aspect of discarding the diaper 10 in the present embodiment is shown. First, after use of the diaper 10, the side seam 23 is peeled off and both side edges of the front and rear waist regions 13, 14. Are separated from each other, the side edges thereof are bent inward, and the crotch region 15 is bent so as to be rounded toward the front and rear waist regions 13 and 14. Next, the distal portion 22 of the deformation suppressing means 20 is latched to the outer surface of the crotch region 15 via the latching region 68. Thereby, the state which rolled the diaper 10 can be hold | maintained, and it can dispose hygienically without leaking excrement outside.

<Fifth Embodiment>
Referring to FIGS. 13 and 14, in the diaper 10 according to the present embodiment, as in the fourth embodiment, the deformation suppressing means 20 is preferably composed of a tape-like base sheet 80 formed from a fiber nonwoven fabric. . The base sheet 80 is fixed to the outer surface of the rear waist region 14 in a state where the base sheet 80 is folded in three, and more specifically between the proximal portion 21 and the latching region 68 in the distal portion 22. In addition, an auxiliary sheet piece 89 formed of a separate sheet member is laminated on the base sheet 80 between the first bent portion 80 a and the latching area 88. In the region where the base sheet 80 and the auxiliary sheet piece 89 are stacked, a highly rigid region having higher rigidity than the proximal portion 21 and the second distal portion 82 is formed.

  In the deformation suppressing means 20 according to the present embodiment, even if the whole is pulled rearward due to the contraction of the rear waist region 14 in the hooked state, a high rigidity is provided between the proximal portion 21 and the hooking region 88. Since the region is formed, the latching region 88 is stably latched on the outer surface of the front waist region 13 and there is no possibility that it is released. That is, when the front and rear waist regions 13 and 14 expand and contract in the direction around the waist, the deformation suppressing means 20 is pulled in the direction around the waist, and the deformation suppressing means 20 is deformed and both side edges are warped. . In this way, when the side edge portions are warped, a peeling force acts on the latching region 88 and it is easy to peel off. By arranging a high rigidity region between the proximal portion 21 and the latching region 88, The force for deforming the deformation suppressing means 20 can be dispersed and the deformation can be suppressed. Moreover, by hooking the deformation | transformation suppression means 20 to the front waist region 12, the side edge 19 of the diaper 10 in which the side seam 23 is located is laid down to the front waist region 12 side. The fallen side edge portion 19 applies an outward force to the first distal portion 81 that contacts and opposes it in an attempt to return to its original state, and tries to deform the distal portion 22 into a convex shape. To do. As a result of the deformation of the distal portion 22 in the vicinity of the side edge portion 19, a peeling force acts on the latching area 88, but the high rigidity region is formed between the side edge 19 of the diaper 10 and the latching area 88. By being positioned in between, the deformation of the distal portion 22 can be suppressed and the peeling force acting on the latching area 88 can be suppressed.

  In order to achieve such an effect, a portion of the distal portion 22 located between the proximal portion 21 and the latching area 88, that is, a portion of the first distal portion 81 and the second distal portion 82, Auxiliary sheet piece 89 may be disposed in the entire area, and a high rigidity region may be formed. This is because in the case of such an aspect, the warp and deformation of the deformation suppressing means 20 from the proximal portion 21 to the latching area 88 can be suppressed.

<Sixth Embodiment>
Referring to FIGS. 15 to 17, in the present embodiment, a base sheet 90 that is a single tape fixed to the outer surface of the rear waist region 14 in a state in which the deformation suppressing means 20 is folded into a Z-shaped cross section, Sheet piece (outer layer sheet) 99. The deformation suppressing means 20 has a proximal portion 21 fixed to the outer surface of the rear waist region 14 via a joint region 53 and a distal portion 22. The distal portion 22 is connected to the proximal portion 21 and is opposed to the first distal portion 91 in the thickness direction Z of the deformation suppressing means 20, and is connected to the first distal portion 91 and is opposed to the first distal portion 91 in the thickness direction Z. 2 distal portions 92. The proximal portion 21, the first and second distal portions 91, 92 are temporarily attached by the first and second temporary fixing portions 94, 95 located in the first and second bent portions 91a, 91b in the stacked state. Stopped. The distal portion 22 further includes a gripping portion 93 that extends from the second temporary fixing portion 95 located at the second bent portion 91b to the side seam 23 side. On the inner surface of the second distal portion 92 between the first and second temporary fixing portions 94 and 95, a hooking region (fastening region) 98 formed from a hook element of a mechanical fastener or a pressure-sensitive adhesive is disposed. . A sheet piece 99 is disposed on the side of the first distal portion 91 that faces the proximal portion 21, and the sheet piece 99 is a first distal portion of the first and second temporary fixing portions 94 and 95. 91 and is separably fixed to the proximal portion 21.

  In the deformation suppressing means 20 according to the present embodiment, the sheet piece 99 positioned between the first and second temporary fixing portions 94 and 95 is moved outward by the proximal portion 21 facing it contracting and deforming. Presents a curved shape. When the sheet piece 99 has a convex shape, the first and second distal portions 91 and 92 that are in contact therewith also bend outward along the sheet piece 99. The sheet piece 99 can be formed of the same material as that of the outer layer sheet 55 in the first embodiment, and the rigidity of the base sheet 90 is such that the sheet piece 99 tends to exhibit a convex shape due to the contraction action of the rear waist region 14. Higher than that.

  Referring to FIGS. 16 and 17, the operator picks up the grip portion 93 and pulls up the deformation suppressing means 20, and the first distal portion 91, the sheet piece 99, While the joint between the first distal portion 91 and the second distal portion 92 is released, the deformation suppressing means 20 is deployed in a state where the joint between the sheet piece 99 and the proximal portion 21 is not released, and the latching region 98 is moved forward. It can be hooked on the outer surface of the waist region 13. In this way, by expanding the deformation suppressing means 20 and hooking the hooking area 98 on the front waist area 13, both sides of the front and rear waist areas 13, 14 can be dragged and the waist size can be reduced. it can. Further, since the temporary stop between the sheet piece 99 and the proximal portion 21 is maintained, the sheet piece 99 has a shape that is curved outward due to the deformation of the proximal portion 21, and both side portions of the rear waist region 14. It is possible to suppress the occurrence of recumbency that causes a fall in 18.

  Each constituent material constituting the diaper 10 is limited to various known materials that are normally used in this kind of field in addition to the materials described in the present specification, unless otherwise specified. It can be used without. Moreover, the aspect in which the front waist region 13, the back waist region 14, and the crotch region 15 were formed in series may be sufficient as the diaper 10. FIG. In the present specification and claims, the terms “first”, “second” and “third” are used merely to distinguish like elements, positions and the like.

The disclosure relating to the present invention described above can be organized into at least the following matters.
A first waist region that is one of the front and rear waist regions, a second waist region that is the other of the front and rear waist regions, and a position between the first and second waist regions. A disposable pants-type wearing article in which the side edges extending in the longitudinal direction in the first and second waist areas are joined to overlap each other in the first and second waist areas, of the side edges of the first waist area A deformation suppressing means is attached in the vicinity, and at least the first waist region of the first and second waist regions includes an elastic region having elasticity in the lateral direction,
The deformation suppressing means is composed of a sheet member fixed to the first waist region, and at least one of the elastic members of the first waist region is bent outward from the first waist region by contraction. The said wearing article characterized by having a convex curved part and forming the space extended in the said vertical direction between the said 1st waist area and the said convex curved part.

The present invention disclosed in the above paragraph 0054 can include at least the following embodiments. The embodiments can be adopted separately or in combination with each other.
(1) The deformation suppressing means includes a proximal portion fixed to the first waist region and a distal portion fixed to the proximal portion in a separable or non-separable manner, and the proximal portion is By contracting together with the first waist region, the convex curved portion is formed at the distal portion.
(2) The proximal portion and the distal portion are fixed via a plurality of fixing portions spaced apart from each other in the lateral direction, and the convex curved portion is disposed on the distal portion located between the fixing portions. Is formed.
(3) The sheet member that constitutes the deformation suppressing means includes an inner layer sheet that forms the proximal portion and an outer layer sheet that forms the distal portion.
(4) The rigidity of the outer layer sheet is higher than the rigidity of the inner layer sheet.
(5) The said deformation | transformation suppression means is formed from a fiber nonwoven fabric sheet.
(6) In the deformation suppressing means, the distal part has a latching area for releasably latching on the outer surface of the second waist area, and is bent through the temporary fixing part. Temporarily fixed to the proximal portion, the temporary fixing portion includes first and second temporary fixing portions that are separated from each other in the lateral direction, and the latching area includes the first and second temporary fixing portions. Located on the inner surface of the distal portion in between.
(7) The hooking area is formed of a hook sheet having a hook element of a mechanical fastener, and the deformation suppressing means in a portion excluding the existing area of the hooking area when the fiber nonwoven fabric sheet is folded. The KES bending rigidity value in the direction in which both side edges of each other approach each other is 0.04 to 0.44 gf · cm ² / cm, and the KES bending in the direction in which both side edges of the deformation suppressing means approach each other in the region where the latching area exists The stiffness value is about 0.56 to 1.8 gf · cm ² / cm.
(8) A high-rigidity region having higher rigidity than the proximal portion is formed between the proximal portion and the hooking region of the distal portion.
(9) The distal portion is temporarily fixed to the proximal portion via first and second temporary fixing portions spaced apart in the lateral direction in a bent state, and is opposed to the proximal portion. A first distal portion located on the outer surface side of the first distal portion, and a latching region for releasably latching on the outer surface of the front second waist region on the inner surface thereof Two distal portions, and a surface of the first distal portion facing the proximal portion is fixed to the proximal portion via a fixing portion whose both ends overlap the first and second temporary fixing portions. A fixed sheet piece is arranged.

10 Disposable pants-type wearing articles (disposable diapers)
13 Front waist area (first or second waist area)
14 Rear waist area (first or second waist area)
15 Crotch area 18 Side part of rear waist area 20 Deformation suppressing means 21 Proximal part 22 Distal part 51 Rear upper elastic area 54 Inner layer sheet 55 Outer layer sheet 60A Upper part 60B Lower part 61 First fixing part 62 Second fixing part 63 3rd fixing | fixed part 64 4th fixing | fixed part 71 1st convex curved part (convex curved part)
72 Second convex curve (convex curve)
73 Third convex part (convex curved part)
75 Base sheet 76a, 76b, 76c Fixing part 77 Base sheet 80 Base sheet 81 First distal part 82 Second distal part 84 First temporary fixing part 85 Second temporary fixing part 88 Engagement area 90 Base sheet 91 First Distal part 92 Second distal part 94 First temporary fixing part 95 Second temporary fixing part 99 Sheet piece

Claims (10)

A first waist region that is one of the front and rear waist regions, a second waist region that is the other of the front and rear waist regions, and a position between the first and second waist regions. A disposable pants-type wearing article in which the side edges extending in the longitudinal direction in the first and second waist regions are joined to overlap each other,
Deformation suppression means is attached in the vicinity of the side edge of the first waist region,
At least the first waist region of the first and second waist regions includes an elastic region having elasticity in the lateral direction,
The deformation suppressing means is composed of a sheet member fixed to the first waist region, and at least one of the elastic members of the first waist region is bent outward from the first waist region by contraction. The said wearing article characterized by having a convex curved part and forming the space extended in the said vertical direction between the said 1st waist area and the said convex curved part.   The deformation suppressing means has a proximal portion fixed to the first waist region and a distal portion fixed to the proximal portion in a separable or non-separable manner, and the proximal portion is the first The wearing article according to claim 1, wherein the convex curved portion is formed at the distal portion by contracting together with the waist region.   The proximal portion and the distal portion are fixed via a plurality of fixing portions spaced apart from each other in the lateral direction, and the convex curved portion is formed at the distal portion located between the fixing portions. The wearing article according to claim 1 or 2.   The wearing article according to claim 1, wherein the sheet member that constitutes the deformation suppressing means includes an inner layer sheet that forms the proximal portion and an outer layer sheet that forms the distal portion.   The wearing article according to any one of claims 2 to 4, wherein the rigidity of the outer layer sheet is higher than the rigidity of the inner layer sheet.   The wearing article according to any one of claims 1 to 5, wherein the deformation suppressing means is formed of a fiber nonwoven fabric sheet.   The said deformation | transformation suppression means WHEREIN: The said distal part has a latching area | region for latching on the outer surface of the said 2nd waist area so that peeling is possible, and the said proximal part via a temporary latching part in the bent state Are temporarily fixed to a portion, and the temporary fixing portion has first and second temporary fixing portions that are spaced apart in the lateral direction, and the hooking area is between the first and second temporary fixing portions. The wearing article of Claim 2 located in the inner surface of a distal part. The hooking area is formed from a hook sheet having a hook element of a mechanical fastener, and both side edges of the deformation suppressing means in a portion excluding the area where the hooking area exists in the folded state of the fiber nonwoven fabric sheet. The KES flexural rigidity value in the direction in which the two approach each other is 0.04 to 0.44 gf · cm ² / cm, and the KES flexural rigidity value in the direction in which both side edges of the deformation suppressing means approach each other in the region where the latching area exists is The wearing article according to claim 7, wherein the wearing article is about 0.56 to 1.8 gf · cm ² / cm.   The wearing article according to claim 7 and 8, wherein a high-rigidity region having rigidity higher than that of the proximal portion is formed between the proximal portion and the hooking region of the distal portion.   The distal portion is temporarily fixed to the proximal portion via first and second temporary fixing portions that are separated in the lateral direction in a bent state, and is positioned to face the proximal portion. A second distal portion having a first distal portion and a latching region located on the outer surface side of the first distal portion and releasably latched on the outer surface of the front second waist region on the inner surface thereof And the both ends of the first distal portion facing the proximal portion are fixed to the proximal portion via fixing portions that overlap the first and second temporary fixing portions. The wearing article according to claim 2 in which a sheet piece is arranged.