JP5868123B2 - Disposable wearing items - Google Patents

Description

  The present invention relates to a disposable wearing article, and more specifically, a disposable wearing article such as a disposable diaper having a crotch panel and an elastic waist panel, disposable toilet training pants, disposable incontinence pants, disposable sanitary pants, and a disposable absorbent pad. About.

  Conventionally, disposable wearing articles having a crotch panel and an elastic waist panel are known. For example, Patent Literature 1 discloses a disposable wearing article including an elastic waist panel that forms a front and rear waist region and a crotch panel that extends to the front and rear waist region around the crotch region.

JP 2008-178682 A

  According to the wearing article disclosed in Patent Document 1, a part of the crotch panel is joined to the waist panel. In a crotch panel, an absorptive main body is comprised and it has a top sheet, an absorption element, and a liquid impervious sheet. In the waist panel, in the portion where the crotch panel overlaps, the liquid impervious sheet makes the air permeability poor, and the inside of the wearing article is easily stuffy, which may cause the skin irritation of the wearer.

  Then, the subject of this invention is improvement of the conventional wearing article, Comprising: It is providing the disposable wearing article which ensured the air permeability of a waist panel and made it hard to stuffy.

  The present invention has a longitudinal direction and a lateral direction perpendicular thereto, and is located between the skin facing surface and the non-skin facing surface located on the opposite side, the front waist region, the rear waist region, and the front and back waist regions. A crotch panel, an elastic waist panel that defines the front and rear waist areas, a crotch panel that is attached to the elastic waist panel, defines a part of the front and rear waist areas and the crotch area, and has a liquid absorbing structure The present invention relates to improvement of disposable wearing articles including:

According to the present invention, in the wearing article, the crotch panel has at least front and rear edges extending in the lateral direction attached to the non-skin facing surface of the elastic waist panel, and the elastic waist panel Located between the inner surface sheet, the outer surface sheet positioned on the non-skin facing surface, the inner and outer surface sheets, and a waist elastic body that can expand and contract in the lateral direction, and the inner and outer surface sheets. And a leak-proof sheet joined to at least one of them through a joining region, the inner and outer surface sheets are joined to each other only by an adhesive on the peripheral surface of the waist elastic body, and the leak-proof sheet is a top edge located outside of the longitudinal direction extends into the transverse direction and a lower edge which faces the upper edge is defined by the opposite side edges extending in the longitudinal direction, the contact Region, and the non-junction, said possess a joint portion located at the longitudinal outer side of the non-junction, the junction portion is formed between the side edges of the barrier sheet, the longitudinal A plurality of non-joining portions are located between the plurality of joining portions, and the non-joining portions continuously extend in the lateral direction between both side edges of the leak-proof sheet. A gap between the waist elastic body and the waist elastic body formed and adjacent in the longitudinal direction overlaps with the non-joined portion in a plan view .

  According to the disposable wearing article in one or more embodiments according to the present invention, the elastic waist panel includes an inner / outer surface sheet and a leak-proof sheet positioned between the sheets, and the leak-proof sheet is an inner / outer surface sheet. It joins to either one via a joining area | region. The joining region has a joining part and a non-joining part continuously extending in the lateral direction. Since no adhesive or the like is present at the non-joined portion, air permeability can be ensured, and stuffiness in the wearing article can be prevented.

The perspective view of the disposable diaper shown as an example of the disposable wearing article in embodiment of this invention. The partially broken expansion | deployment top view which looked at the state which peeled the side 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. 1. The enlarged view of the part enclosed by V of FIG. The figure which showed the joining area | region of the leak-proof sheet.

  1-4, the disposable diaper 10 shown as an example of the wearing article of the present invention includes a longitudinal direction Y and a transverse direction X orthogonal thereto, and a virtual longitudinal center line that bisects the width dimension of the transverse direction X. 2-2 and a virtual horizontal center line 3-3 that bisects the width dimension in the vertical direction Y. The diaper 10 is formed symmetrically with respect to the virtual vertical center line 2-2.

  The diaper 10 includes a skin facing surface, a non-skin facing surface facing the skin, front and rear waist panels 20 and 30 constituting an annular elastic waist panel, and a crotch panel attached to the non-skin facing surfaces of the front and rear waist panels 20 and 30. 40, a front waist region 11, a rear waist region 12, and a crotch region 13 extending in the longitudinal direction Y between the front and rear waist regions 11, 12. The front waist region 20 is defined by the front waist panel 20, and the rear waist region 12 is defined by the rear waist panel 30. Further, a crotch region 13 is defined by a part of the crotch panel 40.

  The front waist panel 20 has upper and lower end edges 20A, 20B extending in the horizontal direction X and both side edges 20C extending in the vertical direction Y. Similarly, the rear waist panel 30 has upper and lower end edges 30A, 30B extending in the horizontal direction X. And both side edges 30C extending in the longitudinal direction Y. The front and rear waist panels 20 and 30 have substantially the same shape and the same size, and are each formed in a horizontally long rectangular shape. The crotch panel 40 has a vertically long and substantially rectangular shape, and includes a front end edge 40A extending in the lateral direction X and a rear end edge 40B facing the front end edge 40A. The front end edge 40A is interposed via the first joint portion 71. The rear waist edge 40 </ b> B is attached to the non-skin facing surface of the rear waist panel 30 via the second joint portion 72. A crotch region 13 is defined between the lower end edge 20B of the front waist panel 20 and the lower end edge 30B of the rear waist panel 30.

  Both side edges 20C and 30C of the front and rear waist panels 20 and 30 are overlapped with each other and connected by a series of intermittent side seam portions 14 extending in the longitudinal direction Y, and by upper end edges 20A and 30A of the front and rear waist panels 20 and 30. A waist opening 15 of the diaper 1 is defined, and a part of the leg opening 16 of the diaper 1 is defined by the lower edges 20B and 30B. The side seam part 14 is formed by being welded intermittently in the longitudinal direction Y by various types of heat welding means such as known joining means, for example, heat embossing and sonic processing.

The front and rear waist panels 20 and 30 are the first and second inner sheets 21 and 31 located on the skin facing surface side, the first and second outer sheets 22 and 32 located on the non-skin facing surface side, and these sheets 21. , 22 and 31, 32 and first and second leak-proof sheets 23, 33. The first inner and outer surface sheets 21 and 22 and the second inner and outer surface sheets 31 and 32 are made of, for example, a liquid-impervious SMS (spunbond / meltblown / spunbond) fiber nonwoven fabric or spunbond having a mass of about 10 to 30 g / m ^2. It is formed from a fiber nonwoven fabric or a laminate sheet of a plastic sheet and any one of the fiber nonwoven fabrics. The first and second leak-proof sheets 23 and 33 are made of, for example, a liquid-impermeable and breathable plastic sheet.

  The first and second leak-proof sheets 23, 33 extend in the lateral direction X and are located at the upper ends 23A, 33A located outside the longitudinal direction Y, the lower ends 23B, 33B facing the upper ends 23A, 33A, and the vertical It is defined by both side edges 23C, 33C extending in the direction Y. The first leak-proof sheet 23 is the center in the lateral direction X of the front waist panel 20 and is attached along the lower edge 20B. The lower edge 23B of the first leak-proof sheet 23 and the lower edge of the front waist panel 20 The edge 20B coincides. Similarly, the 2nd leak-proof sheet 33 is the center of the horizontal direction X of the rear waist panel 30, and is attached along the lower end edge 30B. The lower end edge 33B of the second leak-proof sheet 33 and the lower end edge 30B of the rear waist panel 30 coincide. Both side edges 23C and 33C are smaller in dimension in the lateral direction X than both side edges 40C of the crotch panel 40. An upper end edge 23 </ b> A of the first leak-proof sheet 23 is positioned inward in the vertical direction Y with respect to the front end edge 40 </ b> A of the crotch panel 40 in the vertical direction Y. The second leak-proof sheet 33 has an upper end edge 33 </ b> A extending from the rear end edge 40 </ b> B of the crotch panel 40 outward in the vertical direction Y to form an extending portion 36. The first and second leak-proof sheets 23 and 33 are joined to the first and second inner and outer surface sheets 21 and 31 via the joining region 90.

  Referring to FIGS. 3 and 6, the joining region 90 includes a plurality of joining portions 91 extending continuously in the lateral direction X, and a non-joining portion positioned between the joining portions 91 and continuously extending in the lateral direction X. Part 92. The joining portion 91 and the non-joining portion 92 are formed in almost the entire region in the lateral direction X between the side edges 23C and 33C of the first and second leak-proof sheets 23 and 33. The joining portion 91 is formed by a known joining means such as a hot melt adhesive, and the adhesive may be applied continuously in the lateral direction X or may be applied intermittently in a spiral shape. That is, the adhesive may be continuously extended in the lateral direction X or may be extended intermittently, and is appropriately selected within a range in which the adhesive can be bonded to the first and second inner surface sheets 21 and 31. obtain. In the non-joining portion 92, no adhesive is applied, and the first and second inner surface sheets 21 and 31 can be separated from each other. Although only the second leak-proof sheet 33 is shown in FIG. 6, the first leak-proof sheet 23 also has a similar joining area 90.

  2 and 3, a plurality of strand-like or string-like front and rear waist elastic bodies 24 extending in the transverse direction X are provided between the first inner and outer surface sheets 21 and 22 and between the second inner and outer surface sheets 31 and 32. , 34 are arranged. The front and rear waist panels 20 and 30 are elasticized so that they can expand and contract at least in the lateral direction X by the front and rear waste elastic bodies 24 and 34 being disposed. The front waist elastic body 24 is disposed between the first leak-proof sheet 23 and the first outer sheet 22 in the region where the first leak-proof sheet 23 exists. Similarly, the rear waist elastic body 34 is also disposed between the second leak-proof sheet 33 and the outer surface sheet 32 in the region where the second leak-proof sheet 33 exists.

  Referring to FIG. 5, a hot melt adhesive 61 is applied to almost the entire peripheral surface of the rear waist elastic body 34, and the second inner and outer surface sheets 31 and 32 are bonded to each other via the adhesive 61. Compared with the case where an adhesive is applied to almost the entire area of the second inner and outer surface sheets 31 and 32 and these are adhered to each other, the amount of adhesive applied can be reduced, and the rigidity of the rear waist panel 30 can be reduced by the adhesive. It can be prevented from becoming high. However, the application of the adhesive to the entire area of the second inner and outer sheet 31, 32 is not excluded.

  Although only the rear waist panel 30 is shown in FIG. 5, the front waist panel 20 similarly applies an adhesive to the peripheral surface of the front waist elastic body 24, and the first inner and outer surface sheets 21, 22 are joined together. The adhesive 61 is applied to at least a part of the peripheral surfaces of the front and rear waist elastic bodies 24, 34, and is preferably applied to a wider area, more preferably to almost the entire peripheral surface.

  Referring to FIGS. 2, 3, and 4 again, the front and rear waist panels 20 and 30 have first and second large sizes in which the longitudinal dimension of the front and rear waist elastic bodies 24 and 34 in the longitudinal direction Y is larger than that of other regions. Spacing portions 25 and 35 are formed. The first and second large separation portions 25 and 35 are located outward in the longitudinal direction Y from the front and rear end edges 40A and 40B of the crotch panel 40, respectively. The dimension in the longitudinal direction Y of the first and second large spacing portions 25 and 35 is about 10 to 35 mm, preferably about 20 to 30 mm. The dimension in the longitudinal direction Y refers to a dimension (pitch) from the center of one elastic body that defines the first and second large separation portions 25 and 35 to the center of the other elastic body. In the region other than the first and second large separation portions 25 and 35, the size in the longitudinal direction Y of the elastic bodies adjacent to each other in the longitudinal direction Y is about 5 to 15 mm, preferably about 5 to 10 mm. In this embodiment, front and rear waist elastic bodies 24 and 34 having a thickness of about 500 to 1000 dtex can be used, and can be attached at an expansion ratio of about 1.8 to 3.0 times.

  Since the first and second large separation portions 25 and 35 are formed on the front and rear waist panels 20 and 30, the wearer or caregivers can use the first and second large separation when the diaper 10 is worn or during wearing. The front waist region 11 or the rear waist region 12 can be pinched and pulled up by hooking a finger on the portions 25 and 35. Therefore, the finger does not slip from the diaper 10 and is easy to pull up. In addition, the first and second large spacing portions 25, 35 are located outside the longitudinal direction Y of the crotch panel 40, that is, do not overlap the crotch panel 40, so that these first and second large spacing portions 25, Since the flexibility of 35 can be maintained, the finger can be more easily hooked.

  The front waist panel 20 has a plurality of welded portions 27 and 28 along the upper edge 20A and the lower edge 20B. Similarly, the rear waist panel 30 also has a plurality of welds along the upper edge 30A and the lower edge 30B. Parts 37 and 38. The welded portions 27, 28 and 37, 38 are intermittently positioned in the lateral direction X, and partially weld and join the first inner / outer surface sheets 21, 22 and the second inner / outer surface sheets 31, 32. The welded portions 27, 28 and 37, 38 are formed by known joining means, for example, various heat welding means such as hot embossing and sonic processing. Since the first inner and outer sheet 21, 22 and the second inner and outer sheet 31, 32 are bonded to each other only by the adhesive 61 on the peripheral surfaces of the first and second waist elastic bodies 24, 34, the upper edge particularly At 20A, 30A and lower end edges 20B, 30B, these inner and outer surface sheets may be separated from each other, and a wearer's finger or the like may be caught between the sheets. However, since they are welded by the welded portions 27 and 37, they can be prevented from being peeled off, and a finger or the like can be prevented from being caught.

The first and second cover sheets 81 overlap the first and second outer surface sheets 22 and 32 of the front and rear waist panels 20 and 30 so as to cover the front and rear end edges 40A and 40B of the joined crotch panel 40. , 82 are attached. The first and second cover sheets 81 and 82 are each formed in a horizontally long rectangular shape, and both side edges thereof are joined together with the first inner and outer surface sheets 21 and 22 and the second inner and outer surface sheets 31 and 32 by the side seam portion 14. Is done. The dimension in the longitudinal direction Y of the first and second cover sheets 81 and 82 is made smaller than that of the first inner and outer surface sheets 21 and 22 and the second inner and outer surface sheets 31 and 32. The first and second cover sheets 81 and 82 may be formed of, for example, a liquid-impervious SMS (spunbond / meltblown / spunbond) fiber nonwoven fabric or a spunbond fiber nonwoven fabric having a mass of about 10 to 30 g / m ^2. it can.

  The first and second cover sheets 81 and 82 are bonded to the first and second outer sheets 22 and 23 by a known adhesive 63 such as a hot melt adhesive (see FIG. 5). The hot melt adhesive 63 is intermittently applied to almost the entire area of the first and second cover sheets 81 and 82. Even when the first and second cover sheets 81 and 82 overlap each other, the first inner / outer surface sheets 21 and 22 and the second inner and outer surface sheets 31 and 32 are It can join only by the adhesive agent 61 of the surrounding surface of the front-and-back waist elastic bodies 24 and 34, and can suppress that the rigidity of the front-and-back waist panels 20 and 30 whole becomes high too much.

  The first and second cover sheets 81 and 82 are positioned so as to overlap the first and second large separation portions 25 and 35. Accordingly, the first inner and outer surface sheets 21 and 22 and the second inner and outer surface sheets 31 and 32 positioned in the first and second large separation portions 25 and 35 can be reinforced, and the first and second large separation portions 25 are provided. , 35 to prevent the first and second large spacing portions 25, 35 from being broken when the diaper 10 is pulled up. Further, the extended portion 36 of the second leak-proof sheet 33 overlaps the second large separation portion 35 of the rear waist panel 30. Therefore, in the region where the extension part 36 overlaps, the second large separation part 35 can be further reinforced, and the tearing at the time of pulling up can be prevented.

  The crotch panel 40 includes a base sheet 43, a liquid absorbent structure 44 disposed on the skin facing surface (inner surface) of the base sheet 43, and a body side liner formed from a liquid permeable sheet that covers the liquid absorbent structure 44. 45.

  The base sheet 43 is formed of inner and outer surface crotch sheets 46 and 47, at least one of which is formed from a liquid-impervious fiber nonwoven fabric sheet or a plastic film. Further, the inner and outer surface crotch sheets 46 and 47 are joined to each other via a hot melt adhesive (not shown) applied to the inner surface of one of the sheets 46 and 47, and both side portions thereof. Are folded inward to form a pair of elastic side flaps 48 having a gasket function extending in the longitudinal direction Y.

  The elastic side flap 48 is provided with a first leg elastic body 51 and a second leg elastic body 52 which are formed in a plurality of strands or strings extending in the vertical direction Y, and are elasticized at least in the vertical direction Y. Has been. Specifically, the first leg elastic body 51 is disposed between the second leg elastic body 52 and the inner edge 49 of the elastic side flap 48, and the first leg elastic body 51 extends in the vertical direction along the inner edge 49. The second leg elastic body 52 extends straight in the Y direction, and is curved in a convex manner toward the first leg elastic body 51 in the vicinity of the virtual lateral center line 3-3, and extends in a direction surrounding the wearer's thigh. . The first and second leg elastic bodies 51, 52 are connected to both sheets 46, via a hot melt adhesive (not shown) applied to the inner surface of one of the inner and outer surface crotch sheets 46, 47. 47 is fixed in a state of being extended in the longitudinal direction Y.

  When the diaper 10 is worn, the vicinity of the inner edge 49 of the elastic side flap 48 is in close contact with the vicinity of the wearer's buttocks due to the contraction force of the first leg elastic body 51, thereby preventing lateral leakage of excrement from the leg opening 16. can do. Moreover, since the 2nd leg elastic body 52 curves in the center part in the virtual horizontal centerline 3-3 vicinity, and has approached the 1st leg elastic body 51, contraction force is large compared with the part which these separated. Become. Thereby, the center part vicinity of the elastic side flap 48 which opposes a wearer's buttocks vicinity adheres to a wearer's body, and can prevent the side leakage of the excretion from the leg opening 16 more effectively.

The body side liner 45 is a fiber nonwoven fabric sheet having a liquid permeability of a mass of about 15 to 35 g / m ² , preferably hydrophilized, such as spunbond fiber nonwoven fabric, point bond fiber nonwoven fabric, and air-through nonwoven fabric. It can be formed from various known fiber nonwoven fabrics.

The liquid absorbing structure 44 has an absorbent core formed of so-called absorbent polymer particles that are insoluble and have a water absorption capacity of 10 times or more of the self-mass, with a mass of about 8 to 15 g / m ² , preferably a mass of about 10 g / constituted covered with a covering sheet formed of a water-permeable fibrous nonwoven m ^2. In order to prevent the absorbent polymer particles from losing their shape after absorbing the body fluid, the absorbent core can be divided into a plurality of absorbent regions. The absorbent core may contain a known absorbent material such as fluff pulp in addition to the absorbent polymer particles. Further, the liquid absorbing structure 44 is fixed to the inner surface of the base sheet 43 through a known bonding means (not shown). The liquid absorption structure 44 may be joined to the base sheet 43 in the entire region, or only a part thereof, particularly only the front and rear edges may be joined.

  In the diaper 10 as described above, a waste storage space 54 surrounded by the crotch panel 40 and the vicinity of the lower end edges 20B and 30B of the front and rear waist panels 20 and 30 is formed. Although the crotch panel 40 is attached to the outer surface of the front and rear waist panels 20 and 30, the excrement accommodation space 54 can be formed larger than the case where they are attached to the inner surfaces of the front and rear waist panels 20 and 30. In addition, as long as the excrement accommodation space has a required size, only one of the front and rear waist regions 11 and 12 may be attached to the outer surface of the front and rear waist panels 20 and 30. Moreover, since the liquid absorption structure 44 is comparatively thin, the diaper 10 has a large-capacity excrement storage space 54 as compared with other articles of this type, and a relatively large amount of excrement. In addition, the crotch panel 40 is suspended in a state of being separated from the wearer's buttocks to form a bag shape, and the wearer's buttocks can be prevented from being contaminated by excrement.

  The first and second joint portions 71, 72 that join the crotch panel 40 to the front and rear waist panels 20, 30 have a concave shape that opens toward the crotch region 13, and are respectively hot on the skin facing surface of the elastic side flap 48. It has both side parts 73 and 74 formed by applying a melt adhesive, and central parts 75 and 76 extending in the lateral direction X between the both side parts. The central portions 75 and 76 are located outside the liquid absorbing structure 44 in the longitudinal direction Y, and a hot melt adhesive is applied between the both side portions 73 and 74 and the central portions 75 and 76. No unbonded sites 77, 78 are defined. In the present embodiment, both side portions 73 of the first joint portion 71 have a step shape, and both side portions 74 of the second joint portion 72 have a rectangular shape, but are not limited to these shapes. Both side portions 73 and 74 may have various shapes such as a stepped shape, a rectangular shape, and a curved shape.

  By defining the non-joining portions 77 and 78 in the first and second joint portions 71 and 72, the first and second pockets (space portions) 55, between the front and rear waist panels 20 and 30 and the crotch panel 40, 56 is formed. By forming the first and second pockets 55 and 56, the waste storage space 54 defined in the crotch panel 40 can be made larger. Further, the first and second pockets 55 and 56 are connected to the crotch panel 40 and the front and rear waist panels 20 and 30 in a watertight manner by the first and second joint portions 71 and 72, so It is possible to prevent the excrement from leaking.

  In the diaper 1 as described above, display elements such as graphics and characters can be provided on the extending portion 36 of the second leak-proof sheet 33. For example, a letter “M” indicating the size of the diaper 1, a product name, a character figure, or the like can be attached. The display element may be provided on either the surface facing the second inner surface sheet 31 or the surface facing the second outer surface sheet 32 of the extending portion 36, and these display elements are visible from the non-skin facing surface of the diaper 1. To do. In this embodiment, since the second outer surface sheet 32 and the second cover sheet 82 are laminated on the non-body side of the extending portion 36, the display element is visually recognized through at least these sheets. Whether or not the display element is visible is determined by the color of the display element, the light transmittance of the sheet laminated on the display element, and the like. In addition, since the second leak-proof sheet 33 is bonded to the second inner sheet 31 in a wide range by the joining region 90, it does not float or twist between the second inner and outer sheets 31, 32. It can be made easy to visually recognize from the facing surface.

The extension part 36 is disposed so as to overlap the second large separation part 35. In the second large separation portion 35, the spacing between the elastic bodies is wider than in other adjacent regions, so that the number of wrinkles formed by the elastic bodies is reduced, and the display elements formed in the extending portions 36 are easily visible. be able to. In addition, although the extending part 36 is supposed to be formed only on the rear waist panel 30, it can be formed on at least one of the front and rear waist panels 20 and 30.
The large spacing portion is formed on both the front and rear waist panels 20 and 30, but can be formed on at least one of them. However, since the large separation portion is formed on the front and rear panels 20 and 30, even when any of the front and rear panels 20 and 30 is sandwiched and pulled up, the finger can be hooked, which makes it easier to pull.

  In the diaper 10 as described above, a non-joint portion 92 extending in the lateral direction X is formed in a joint region 90 where the first and second leak-proof sheets 23 and 33 and the first and second inner face sheets 21 and 31 are bonded to each other. Is formed. Since no adhesive is present at the non-joining portion 92, it is possible to prevent the diaper 10 from being steamed without impairing the air permeability of the first inner and outer surface sheets 21, 22 and the second inner and outer surface sheets 31, 32. . Further, in the front and rear waist panels 20 and 30, the portion where the crotch panel 40 overlaps becomes worse in air permeability, but at the portion where the crotch panel 40 overlaps, at least a part of the first and second leak-proof sheets 23 and 33. Since the air permeability is ensured by the non-joining portion 92, a significant deterioration in air permeability can be prevented even in the portion where the crotch panel 40 overlaps.

  The non-joining part 92 extends across the entire lateral direction X between the side edges 23C, 33C of the first and second leak-proof sheets 23, 33. When the first inner / outer surface sheets 21 and 22 and the second inner / outer surface sheets 31 and 32 are separated from each other by the non-joining portion 92, a space extending in the lateral direction X is formed, and the one side edge 23C or 33C to the other The air can be passed toward the side edges 23C, 33C of the. Therefore, it is possible to further prevent the diaper 10 from being steamed.

  In the first and second leak-proof sheets 23 and 33, by having the non-joint portion 92, it is possible to reduce the amount of adhesive applied to that extent, and by applying the adhesive, the first inner and outer surface sheets 21, 22 and the second 2 It is possible to prevent the rigidity of the inner and outer surface sheets 31 and 32 from increasing. Further, in the non-joining portion 92, the first inner and outer surface sheets 21 and 22 and the second inner and outer surface sheets 31 and 32 can be separated from each other. Since the front and rear waist elastic bodies 24 and 34 are attached in a stretched state between the first inner and outer surface sheets 21 and 22 and between the second inner and outer surface sheets 31 and 32, the first inner and outer surfaces are contracted by contracting them. The sheets 21 and 22 and the second inner and outer surface sheets 31 and 32 are easily separated. The first inner / outer surface sheets 21 and 22 and the second inner / outer surface sheets 31 and 32 are separated from each other by the non-joint portion 92, whereby the rigidity of the front and rear waist panels 20 and 30 can be partially reduced. The irritation | stimulation at the time of contacting skin can be reduced further. The area of the non-joining part 92 can be about 30 to 90%, preferably about 50 to 80%, of the area of the first and second leak-proof sheets 32 and 33.

  When the diaper 10 as described above is used, for example, for a bedridden adult, the second leak-proof sheet 33 can be worn so as to be positioned on the sacrum. When bedridden wearers lie on their back, pressure ulcers can be easily formed around the sacrum, but by placing the second leak-proof sheet 33 of the diaper 10 between the sacrum and the bedding, pressure ulcers cannot be easily formed. Can do. That is, in the non-joining part 92, the second leak-proof sheet 33 and the second inner sheet 31 are separated to form a gap, thereby functioning as a cushioning agent between the wearer's skin and bedding. The pressure ulcer can be made difficult, and the pressure ulcer worsens or the pain caused by the pressure ulcer can be reduced. Further, the second leak-proof sheet 33 can prevent excrement from adhering to the skin.

  The first and second leak-proof sheets 23 and 33 are bonded to the first and second inner face sheets 21 and 31, and the front and rear between the leak-proof sheets 23 and 33 and the first and second outer face sheets 22 and 32. Waist elastic bodies 24 and 34 are disposed. Accordingly, the contraction force of the front and rear waist elastic bodies 24 and 34 is transmitted to the wearer's skin through the first and second leak-proof sheets 23 and 33 and the first and second inner surface sheets 21 and 31. Compared to the case without the leak-proof sheets 23 and 33, the stimulation of the elastic body to the wearer's skin can be reduced.

  In addition to the materials described in the present specification, various known materials that are usually used in this type of article can be used without limitation for the respective constituent members constituting the diaper 10. In the specification and claims of the invention, the terms “first” and “second” are used merely to distinguish similar elements, positions, and the like.

Disclosure relates to the present invention described above can be summarized in at least the following matters.
The present invention relates to the improvement of the following disposable wearing article 10. The wearing article 10 has a longitudinal direction Y and a transverse direction X orthogonal thereto, and a skin facing surface and a non-skin facing surface located on the opposite side thereof, a front waist region 11, a rear waist region 12, and the front and rear waists. The crotch region 13 located between the regions 11 and 12, the elastic waist panels 20 and 30 that define the front and rear waist regions 11 and 12, and the elastic waist panels 20 and 30 are attached to the front and rear waist regions 11 and 12. And a crotch panel 40 that defines the crotch region 13 and has a liquid absorbing structure 44.

The present invention is characterized by the following points in the disposable wearing article 1.
The crotch panel 40 has at least front and rear end edges 40A and 40B extending in the lateral direction X attached to the non-skin facing surfaces of the elastic waist panels 20 and 30, respectively.
The elastic waist panels 20 and 30 include inner sheets 21 and 31 positioned on the skin facing surface, outer sheets 22 and 32 positioned on the non-skin facing surface, and the inner and outer sheets 21, 22, 31, and 32, respectively. It has the leak-proof sheet | seats 23 and 33 located in the middle and joined via the joining area | region 90 to at least any one.
The joining region 90 includes a non-joining portion 92 that continuously extends in the lateral direction X and a joining portion 91 that is located outside the longitudinal direction Y of the non-joining portion 92.

The present invention can include at least the following embodiments.
(1) The non-joining part 92 is formed between both side edges of the leak-proof sheets 23 and 33.
(2) The joint portion 91 is formed between both side edges of the leak-proof sheets 23 and 33, and a plurality of the joint portions 91 are formed apart from each other in the longitudinal direction Y, and between the longitudinal directions Y of the joint portions 91. The non-joining portion 92 is formed.
(3) The leakproof sheets 23 and 33 are joined to the inner surface sheets 21 and 31.
(4) Waist elastic bodies 24 and 34 that can be expanded and contracted in the lateral direction X are attached between the inner and outer surface sheets 21, 22, 31, and 32.
(5) The waist elastic bodies 24 and 34 are attached so as to overlap the joining region 90.
(6) The leak-proof sheets 23 and 33 are positioned so as to overlap with the region joined to the elastic waist panels 20 and 30 of the crotch panel 40.
(7) At least a part of the leak-proof sheets 23 and 33 has an extending portion 36 that is positioned outward in the longitudinal direction Y from at least one of the front and rear end edges 40A and 40B of the crotch panel 40. .
(8) Display elements such as graphics and characters are formed on the extending portion 36, and the display elements are visible from the non-skin facing surfaces of the elastic waist panels 20 and 30.

10 Disposable wearing articles (disposable diapers)
11 Front waist region 12 Rear waist region 13 Crotch region 20 Front waist panel (elastic waist panel)
20A Upper edge 20B Lower edge 21 First inner sheet (inner sheet)
22 First outer sheet (outer sheet)
23 First leak-proof sheet (leak-proof sheet)
24 Front waist elastic body (Waist elastic body)
30 Rear waist panel 30A Upper edge 30B Lower edge 31 Second inner sheet (inner sheet)
32 Second outer sheet (outer sheet)
33 Second leak-proof sheet (leak-proof sheet)
34 Rear waist elastic body (waist elastic body)
46 extension part 40 crotch panel 40A front end edge 40B rear end edge 90 joint area 91 joint part 92 non-joint part

Claims (4)

A longitudinal direction and a lateral direction perpendicular thereto, a skin facing surface and a non-skin facing surface located on the opposite side thereof, a front waist region, a rear waist region, and a crotch region located between the front and rear waist regions; Disposable including an elastic waist panel that defines the front and rear waist region, and a crotch panel that is attached to the elastic waist panel, defines a part of the front and rear waist region and the crotch region, and has a liquid absorbing structure In wearing articles,
The crotch panel has at least front and rear edges extending in the lateral direction attached to the non-skin facing surface of the elastic waist panel, respectively.
The elastic waist panel is located between the inner surface sheet positioned on the skin facing surface, the outer sheet positioned on the non-skin facing surface, and the waist elastic body positioned between the inner and outer surface sheets and capable of expanding and contracting in the lateral direction. And a leak-proof sheet positioned between the inner and outer surface sheets and bonded to at least one of the sheets via a bonding region,
The inner and outer surface sheets are joined to each other only by the adhesive on the peripheral surface of the waist elastic body,
The leak-proof sheet is defined by an upper end edge extending in the lateral direction and positioned outward in the longitudinal direction, a lower end edge facing the upper end edge, and both side edges extending in the longitudinal direction,
The junction region may possess a non-bonded portion, and a joint portion located at the longitudinal outer side of the non-joined portion,
The joint portion is formed between the both side edges of the leak-proof sheet, and is formed in a plurality spaced apart in the longitudinal direction, and the non-joint portion is positioned between the plurality of joint portions,
The non-joining part is formed so as to continuously extend in the lateral direction between both side edges of the leak-proof sheet,
The disposable wearing article , wherein a gap between the waist elastic body and the waist elastic body adjacent in the longitudinal direction overlaps with the non-joined portion in a plan view . The disposable wearing article according to claim 1 , wherein the leak-proof sheet is joined to the inner sheet. The disposable wearing article according to claim 1 or 2 , wherein at least a part of the leak-proof sheet has an extending portion positioned outward in the longitudinal direction from at least one of the front and rear end edges of the crotch panel. The disposable wearing article according to claim 3 , wherein a display element such as a figure or a character is formed on the extension part, and the display element is visible from the non-skin facing surface of the elastic waist panel.

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