JP5911263B2 - 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, the waist panel is formed by laminating two fiber nonwoven fabrics, and an elastic elastic member is attached between the fiber nonwoven fabrics. A hot melt adhesive or the like is applied between the two fiber nonwoven fabrics to bond the fiber nonwoven fabrics to each other, and the elastic elastic member is also bonded to at least one of the fiber nonwoven fabrics.

  However, when an adhesive is applied to the entire fiber nonwoven fabric, the amount of adhesive applied increases, so that the stiffness of the fiber nonwoven fabric increases and the touch becomes poor. Further, when a diaper having increased rigidity is worn, it may irritate the wearer's skin and cause rash. In particular, when other members or sheets such as the part where the crotch panel is joined are laminated and these parts are joined to each other by an adhesive or the like on almost the entire surface, the deterioration of the touch due to the increase in partial rigidity is remarkable. become.

  Then, the subject of this invention is improvement of the conventional wearing article, Comprising: It is providing the disposable wearing article which can suppress irritation | stimulation to the skin of a wearer by a waist panel.

  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 region, an elastic waist panel that defines the front and back waist region, a crotch panel that is attached to the elastic waist panel, defines a part of the front and back waist region and the crotch region, and has a liquid absorbing structure; The present invention relates to improvement of disposable wearing articles including

The present invention, in the wearing article, the elastic waist panel has an inner surface sheet located on the skin-facing surface, wherein the outer sheet is located in the non-skin facing surface, Oite telescopically between said inner and outer sheets A waist elastic body positioned and a leak-proof sheet positioned between the inner and outer surface sheets and overlapping the waist elastic body, and the entire surface of the leak-proof sheet is bonded to one of the inner and outer surface sheets. The inner and outer surface sheets are bonded to each other at least a part of the peripheral surface of the waist elastic body, and the crotch panel is connected to the outer surface of the elastic waist panel via first and second joints located on the inner surface thereof. It is attached to.

  According to the disposable wearing article in one or more embodiments of the present invention, the elastic waist panel includes an inner and outer surface sheet and a waist elastic body positioned between these sheets, and the inner and outer surface sheet is a waist elastic body. They are joined to each other by an adhesive located on at least a part of the peripheral surface of each other. Therefore, even if a waist elastic body is attached, the rigidity of the inner and outer surface sheets is not significantly increased, and the touch to the wearer can be prevented from deteriorating.

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.

  1-4, the disposable diaper 10 shown as an example of the disposable wearing article of the present invention includes a longitudinal direction Y and a transverse direction X perpendicular thereto, and a virtual longitudinal center that bisects the width dimension of the transverse direction X. It has a line 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 each has 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 leak-proof sheet 23 is attached in the center of the front waist panel 20 in the lateral direction X and along the lower edge 20B. The second leak-proof sheet 33 is the center in the lateral direction X of the rear waist panel 30 and is attached along the lower end edge 30B. The first and second leak-proof sheets 23 and 33 are joined to the first and second outer sheets 22 and 32 by a known joining means such as a hot melt adhesive. The adhesive is intermittently applied to almost the entire surface of the first and second leak-proof sheets 23 and 33.

  The first and second leak-proof sheets 23 and 33 extend in the lateral direction X and are opposed to the upper end edges 23A and 33A located outside the longitudinal direction Y and the upper end edges 23A and 33A. The lower end edges 23B and 33B coincide with the lower end edges 20B and 30B, and both side edges 23C and 33C extending in the longitudinal direction Y are defined. 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. These first and second leak-proof sheets 23 and 33 are respectively joined to the first inner surface sheet 21 and the second inner surface sheet 31 by a known adhesive 62 such as a hot melt adhesive (see FIG. 5).

  Between the first inner and outer surface sheets 21 and 22 and between the second inner and outer surface sheets 31 and 32, a plurality of strand-like or string-like front and rear waist elastic bodies 24 and 34 extending in the lateral direction X are disposed. 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 second outer 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. If the 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 increases, so the adhesive increases the rigidity of the rear waist panel 30. Gives the wearer skin an irritation. However, since the adhesive is applied only to the peripheral surface of the rear waist elastic body 34, the application amount of the adhesive can be reduced, and the increase in rigidity of the second inner and outer surface sheets 31, 32 can be suppressed. This is not a big stimulus. Therefore, it is possible to prevent rash caused by irritation to the wearer's skin. Further, since the second leak-proof sheet 33 is adhered to the second inner surface sheet 31 by the adhesive 62 applied to almost the entire surface thereof, the rigidity tends to increase in the region where the adhesive 62 is applied. However, since the rigidity of the second inner and outer sheet 31, 32 is kept low, it is possible to prevent the rigidity of the entire rear waist panel 30 from being significantly increased. Therefore, even if the second leak-proof sheet 33 is attached, an appropriate touch can be ensured, and this does not cause irritation to the wearer's skin.

  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. As a method of applying an adhesive to almost the entire circumferential surfaces of the front and rear waist elastic bodies 24 and 34, for example, an adhesive is put in a V-shaped container, and the adhesive contacts the entire circumferential surfaces of the front and rear waist elastic bodies 24 and 34. Some of these elastic bodies move in the container. Further, as a method of intermittently applying the adhesive around the front and rear waist elastic bodies 24 and 34, for example, there is a method of applying an adhesive spirally around the elastic bodies 24 and 34.

  Referring again to FIGS. 2 and 3, the front and rear waist panels 20 and 30 include first and second large separation portions 25 in which the separation dimensions in the longitudinal direction Y of the front and rear waist elastic bodies 24 and 34 are larger than those in other regions. , 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 and the diaper 10 is pulled up, it is possible to prevent the first and second large separation portions 25, 35 from being torn. 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.

  Referring to FIGS. 2 and 4 again, the crotch panel 40 includes a base sheet 43, a liquid absorbing structure 44 disposed on the skin facing surface (inner surface) of the base sheet 43, and a liquid permeable covering the liquid absorbing structure 44. And a body side liner 45 formed from a sex sheet.

  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 is curving in the center part in the virtual horizontal centerline 3-3 vicinity, these elastic bodies concentrate locally and an elongation stress concentrates. 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 is insoluble and has a water absorption capacity of 10 times or more of its own mass, and has 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 lower edge 20B, 30B vicinity of the front and rear waist panels 20, 30 and the crotch panel 40 is formed (see FIG. 4). 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. Further, since almost the entire surface of the second leak-proof sheet 33 is bonded to the second inner surface sheet 31 by the adhesive 62, the second leakage preventing sheet 33 is not lifted or swung between the second inner and outer surface sheets 31, 32, It can be easily recognized from the non-skin 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 this embodiment, the dimension in the longitudinal direction Y of the first cover sheet 81 is made smaller than that of the first and second inner and outer surface sheets 21 and 22, and the first cover sheet 81 is in the longitudinal direction Y rather than the upper end edge 20A. Although located inward, the dimension of the first cover sheet 81 in the longitudinal direction Y can be increased. Moreover, the dimension in the vertical direction Y of the 1st cover sheet 81 can be enlarged, and the upper end edge 20A of the front waist panel 20 can also be turned up from an outer surface to an inner surface. When folded in this way, the upper end edges of the first and second inner and outer surface sheets 21 and 22 can be covered, so that a finger or the like can be prevented from being caught between them. Therefore, it is not necessary to form the welded portion 27 separately. Similarly, the second cover sheet 82 may be folded back at the upper edge 30 </ b> A of the rear waist panel 30.

  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 defining 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. A crotch panel 40 that defines a portion and 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 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. and waist elastics 24, 34 to telescopically positioned Oite between a barrier sheet 23, 33 overlapping the waist elastics 24 and 34 while located between the inner and outer sheets 21, 22 Have
The entire surfaces of the leak-proof sheets 23 and 33 are bonded to any one of the inner and outer surface sheets 21, 22, 31 and 32.
The inner and outer surface sheets 21, 22, 31, 32 are bonded to each other at least part of the peripheral surfaces of the waist elastic bodies 24, 34 .
The crotch panel 40 is attached to the outer surface of the elastic waist panels 20 and 30 via first and second joints 71 and 72 located on the inner surface thereof.

The present invention can include at least the following embodiments.
(1) The waist elastic body is formed of a plurality of elastic materials 24, 34, string-shaped or strand-shaped, and is spaced apart in the longitudinal direction Y and is positioned so as to be stretchable in the lateral direction X.
(2) The leakage preventing sheets 23 and 33 are intermittently joined to any one of the inner and outer surface sheets 21, 22, 31 and 32.
(3) Cover sheets 81 and 82 overlapping the front and rear end edges 40A and 40B of the crotch panel 40 are joined to the outer surfaces of the elastic waist panels 20 and 30.
(4) the inner and outer sheets 21, 22, 31, 32, the along the top and bottom edges 20A, 20B, 30A, 30B of the elastic waist panel 20 and 30, welded sections 27 and 28 which are joined to each other physician , 37, 38.
(5) The welded portions 27, 28, 37, 38 are intermittently arranged in the lateral direction X.
(6) 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 from at least one of the front and rear end edges 40A and 40B of the crotch panel 40.
(7) 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.
(8) The elastic waist panels 20 and 30 further include large separation portions 25 and 35 in which the separation dimension in the longitudinal direction Y of the waist elastic bodies 24 and 34 is larger than that of other regions, The large spacing portions 25 and 35 are positioned outward in the longitudinal direction Y of the front and rear end edges 40A and 40B of the crotch panel 40.
(9) The large spacing portions 25 and 35 overlap the display elements of the leak-proof sheets 23 and 33.
(10) The large separation portions 25 and 35 overlap the cover sheets 81 and 82.

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)
25 1st large separation part (large separation part)
27 welded portion 28 welded portion 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)
35 Second large separation part (large separation part)
36 extension part 37 welding part 38 welding part 40 crotch panel 40A front end edge 40B rear end edge 61 adhesive 71 first joint part 72 second joint part 81 first cover sheet (cover sheet)
82 2nd cover sheet (cover sheet)

Claims (11)

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 wear comprising: 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 goods,
The elastic waist panel has an inner surface sheet located on the skin-facing surface, wherein the outer sheet is located in the non-skin-facing side, and a waist elastic member which telescopically positioned Oite between said inner and outer sheets, the inner A leak-proof sheet located between the outer sheet and overlapping the waist elastic body,
The entire surface of the leak-proof sheet is bonded to either the inner or outer surface sheet,
The inner and outer surface sheets are bonded to each other at least a part of the peripheral surface of the waist elastic body ,
The disposable wearing article, wherein the crotch panel is attached to an outer surface of the elastic waist panel via first and second joints located on an inner surface thereof. 2. The disposable wearing article according to claim 1, wherein the waist elastic body is formed of a plurality of string-like or strand-like elastic materials, and is spaced apart in the longitudinal direction and is extendable in the lateral direction.   The disposable wearing article according to claim 1 or 2, wherein the leak-proof sheet is intermittently joined to any one of the inner and outer surface sheets.   The disposable wearing article according to any one of claims 1 to 3, wherein a cover sheet overlapping the front and rear end edges of the crotch panel is joined to an outer surface of the elastic waist panel. The inner and outer sheets, said along the upper bottom edge of the elastic waist panel, disposable wearing article according to claim 1 having a welding portion to be joined to each other physician.   The disposable wearing article according to claim 5, wherein the welded portions are intermittently arranged in the lateral direction.   The disposable according to any one of claims 1 to 6, 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. Wearing articles.   The disposable wearing article according to claim 7, 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.   The elastic waist panel further includes a large separation portion in which a separation dimension in the vertical direction of the waist elastic body is made larger than that of another region, and the large separation portion is the front and rear ends of the crotch panel. The disposable wearing article according to any one of claims 1 to 8, which is located outward in the longitudinal direction of an edge.   The disposable wearing article according to claim 9, wherein the large separation portion overlaps the display element of the leak-proof sheet.   The disposable wearing article according to claim 9 or 10, wherein the large separation portion overlaps the cover sheet.

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