JP2017012232A - Disposable wearing article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable wearing article which is excellent in flexibility and with an appearance looking like underwear.SOLUTION: In a first waist region and a second waist region of a diaper, a plurality of ridge parts 45, which extend continuously in a lengthwise direction and have shapes projecting and curving to a skin non-facing surface side, is formed. In an upper surface view of the diaper, a first size H1 from the skin non-facing surface 2 to an apex 45a of the ridge part is equal to or larger than a second size H2 from the skin non-facing surface 2 to an outer end edge 23b of the side seam 23 in at least one side edge part 6 of the first and the second side edge parts.SELECTED DRAWING: Figure 8

Description

  The present invention relates to disposable wearing articles such as diapers.

  In Patent Document 1, the front waist region, the rear waist region, the crotch region located between the front and rear waist regions, the outer layer sheet located on the non-skin facing surface side, the inner layer sheet located on the skin facing surface side, A disposable wearing article having a plurality of elastic members extending in the lateral direction interposed between the inner and outer layer sheets and having both side edges of the front and rear waist regions connected to each other via side seams is disclosed.

JP 2011-15821 A (P2011-15821)

  In the wearing article disclosed in Patent Document 1, the outer layer sheet and the inner layer sheet are joined to each other via a joining line that extends intermittently in the longitudinal direction. In the portion where the sheets are not joined, the outer layer sheet is formed with a plurality of eaves portions extending in the longitudinal direction and projecting outward. Thus, by forming a plurality of ridges on the non-skin facing surface of the worn article, the worn article has flexibility as a whole and has an appearance like an underwear with a three-dimensional pattern on the outer surface. Presents.

  However, in such a wearing article, both end portions of the elastic member interposed between the inner and outer layer sheets are fixed to both sheets at the side edge portions where the side seams are located. The part is not formed. Therefore, in the external appearance of the wearing article, the side seam and the extending portion extending outward in the lateral direction are conspicuous, and at first glance, it may be recognized that the wearing article is a pull-on type disposable wearing article having the side seam. is there.

  It is an object of the present invention to provide a disposable wearing article that is an improvement of a conventional disposable wearing article and that is excellent in flexibility and has an appearance that looks like underwear.

  In order to solve the above-mentioned problems, the present invention has a longitudinal direction and a transverse direction intersecting therewith, a skin facing surface and a non-skin facing surface, a first waist region which is one of front and back waist regions, and the front and back The present invention relates to a disposable wearing article including a second waist area which is the other of the waist areas, a crotch area located between the first and second waist areas, a waist opening and a pair of leg openings.

  In the disposable wearing article according to the present invention, a side seam that joins both side edges of the first and second waist regions to each other and an extending part that extends outward from the side seam in the lateral direction are located. 1 and 2 side edge portions, and in the natural state, the first waist region and the second waist region continuously extend in the longitudinal direction and are curved toward the non-skin facing surface side. A plurality of ridges having a shape are formed, and when viewed from above, the first dimension from the skin facing surface to the apex of the heel is at least a first side of the first and second side edges. It is equal to or larger than the second dimension from the skin facing surface at the edge to the outer edge of the side seam.

  In such a wearing article, flexibility is improved by the buttocks, and the appearance that the side seam is hidden by the buttocks can be given, and an impression like underwear can be given.

  In the top view, the first dimension is equal to a third dimension from the skin-facing surface to the outer edge of the extension part in at least the first side edge of the first and second side edges, or Bigger than that. Therefore, the appearance including the part including the extension part hidden by the buttock can be exhibited, and an impression more like underwear can be given.

 The first and second waist regions include an outer layer sheet positioned on the non-skin facing surface side and an elastic layer positioned on the skin facing surface side, and the outer layer sheet is continuous in the longitudinal direction or A plurality of joints extending discontinuously, and a plurality of non-joining parts located between the joints, wherein the joint part is joined to the elastic layer, and one non-joining part A buttock is formed. Therefore, it is possible to control the size of the collar portion formed on the outer layer sheet to provide an appearance that hides the side seam.

  Since the outer layer sheet and the elastic layer extend to the extension part, the extension part is curved by the elastic layer, and the side seam is hidden by the flange part and the curved extension part. become.

  In the extension portion, the outer layer sheet and the elastic layer are not joined to each other, so that the outer layer sheet and the elastic layer are separated from each other in the extension portion, and the side seam is more hidden.

  In the extension part, the tip part of the outer layer sheet and the tip part of the elastic layer are joined to each other, so that the tip parts of the two outer layer sheets have a shape similar to the curved shape of the collar part. For this reason, the extended portion of the first side edge portion is distorted in appearance on the collar portion and is difficult to distinguish from each other.

  The elastic layer includes an intermediate sheet positioned on the non-skin facing surface side, an inner layer sheet positioned on the skin facing surface side, and a plurality of elastic members interposed between the intermediate sheet and the inner layer sheet; Therefore, since the elastic member is not directly visually recognized by the outer layer sheet and the intermediate sheet, an impression like underwear can be given.

  Since the elastic layer has a non-stretchable intermediate sheet located on the non-skin facing surface side and an inner layer sheet that is stretchable in the lateral direction located on the skin facing surface side, the stretchable inner layer sheet is By using it, the thread-like elastic member is not visually recognized, and an impression more like underwear can be given.

  Since the lateral dimension of the non-joined part is 5.0 to 20.0 mm, the lateral dimension of the non-joined part can be formed with a relatively large collar, and side seams can be formed. An appearance that is surely hidden can be exhibited.

  In at least the first waist region of the first and second waist regions, the lateral dimension of the non-joining portion is increased from the central portion in the lateral direction toward both side edges. The buttock close to the side seam becomes larger, making the side seam less noticeable.

  In the disposable wearing article which concerns on this invention, it is excellent in a softness | flexibility and can exhibit the external appearance like underwear.

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 seen from the front side of the diaper of an example of the disposable wearing article concerning the present invention. The partial fracture | rupture expansion | deployment top view of the diaper extended from the non-skin opposing surface side to the vertical direction and the width direction until the maximum expansion | extension of each elastic body (the extent which the gathers by the contraction effect | action of an elastic material disappear). The exploded perspective view of a front waist panel. (A) is sectional drawing which follows the IVa-IVa line | wire of FIG. (B) is sectional drawing which follows the IVb-IVb line | wire of FIG. FIG. 3 is a partially enlarged view of a region surrounded by a V line in FIG. The side view of the diaper shown in FIG. The top view in the top view of a diaper. (A) is the elements on larger scale of the area | region enclosed with the VIIIa line | wire in FIG. (B) is typical sectional drawing which follows the VIIIb-VIIIb line | wire of FIG. (A) is a figure similar to FIG. 8 (a) in an example of a modification. (B) is a figure similar to FIG.8 (b) in an example of a modification. The figure similar to FIG.7 and FIG.8 (b) in an example of another modification.

  The following embodiment relates to the disposable wearing article shown in FIGS. 1 to 10 and includes not only an indispensable structure of the invention but also a selective and preferable structure.

  1 to 3, a disposable diaper 10 shown as an example of the disposable wearing article of the present invention includes a skin facing surface 2 (inner surface of the inner layer sheet 33) and a non-skin facing surface (outer surface of the outer layer sheet 30) facing it. ), An annular elastic waist panel 11 having a longitudinal direction Y, a transverse direction X, and a thickness direction Z intersecting each other, extending in the direction around the waist, and an absorbent panel 12 joined to the elastic waist panel 11; It includes a front waist region (first or second waist region) 13, a rear waist region (first or second waist region) 14, and a crotch region 15 located between the front and rear waist regions 13, 14. The diaper 10 further has a vertical center line P that bisects the dimension in the horizontal direction X and a horizontal center line Q that bisects the dimension in the vertical direction Y. The elastic waist panel 11 includes a front waist panel 16 that forms the front waist region 13 and a rear waist panel 17 that forms the rear waist region 14.

  The front and rear waist panels 16 and 17 respectively have inner end edges 16a and 17a extending in the horizontal direction X, and outer end edges 16b and 17b extending in the horizontal direction X while being spaced apart from the inner end edges 16a and 17a in the vertical direction Y. In addition, it has an oblong rectangular shape of the same shape and size defined by both side edges 16c, 16d, 17c, 17d extending in the longitudinal direction Y between the inner and outer end edges 16a, 16b, 17a, 17b. The inner and outer end edges 16a, 16b, 17a and 17b and the side edges 16c, 16d, 17c and 17d of the front and rear waist panels correspond to the inner and outer end edges and both side edges of the front and rear waist regions 13 and 14, respectively.

  Each of the side edge portions of the front waist panel 16 (both side edge portions of the front waist region 13) and the side edge portions of the rear waist panel 17 (both side edges of the rear waist region 14) are overlapped with each other in the longitudinal direction Y. A waist seam 24 and a pair of leg openings 25 are defined by side seams 23 that are spaced apart from each other. The side seam 23 is made by a well-known joining means, for example, various heat welding means such as a heat welding process and an ultrasonic welding process. The diaper 10 includes a first side edge 6 formed by joining one side edge 4A of the front waist region 13 and one side edge 5A of the rear waist region 14 via a side seam 23, and a front waist. The other side edge portion 4 </ b> B of the region 13 and the other side edge portion 5 </ b> B of the rear waist region 14 have the second side edge portion 7 formed by being joined to each other via the side seam 23.

  Referring to FIG. 2, the front and rear waist regions 13 and 14 are respectively provided with inner end portions 13A and 14A located on the leg opening 25 side and outer end portions 13B and 14B located on the waist opening 24 side for convenience of explanation. Center portions 13C and 14C are located between the inner end portions 13A and 14A and the outer end portions 13B and 14B. The inner and outer end portions 13A, 13B, 14A, 14B are about 10 to 30% of the longitudinal dimension Y (the length of the side edge portion) L1 of the front and rear waist regions 13, 14, and the center portion 13C. , 14C has a size of about 40 to 80% of the dimension in the longitudinal direction Y of the front and rear waist regions 13,14.

  Each of the front and rear waist regions 13 and 14 includes a non-stretchable outer layer sheet 30 positioned on the non-skin facing surface side and an elastic layer 31 positioned on the skin facing surface side. The elastic layer 31 includes a plurality of strips interposed between the intermediate sheet 32 positioned on the non-skin facing surface side, the moisture-permeable inner layer sheet 33 positioned on the skin facing surface side, and the intermediate sheet 32 and the inner layer sheet 33. And front and rear waist elastic bodies (elastic members) 35 and 36 in the form of strands or strings. The front and rear waist elastic bodies 35 and 36 are interposed between the intermediate sheet 32 and the inner layer sheet 33 forming the front and rear waist regions 13 and 14, respectively, and can be contracted in a state of being stretched in the lateral direction X. At least one of 32 and 33 is attached. The front and rear waist regions 13 and 14 have front and rear elastic regions that can be expanded and contracted in the lateral direction X by arranging the front and rear waist elastic bodies 35 and 36, respectively.

  In the present embodiment, the intermediate sheet 32 and the inner layer sheet 33 are joined to each other by a hot melt adhesive applied to the entire circumference of the front and rear waist elastic bodies 35 and 36 interposed therebetween. The two sheets 32 and 33 may be joined to each other via a hot melt adhesive applied to the entire inner surface in various known patterns such as a dot shape or a spiral shape. By joining only with the hot-melt adhesive applied to the entire circumference of the bodies 35 and 36, the elastic layer 31 becomes relatively soft and the wearer's skin contact becomes good.

  The outer layer sheet 30 and the intermediate sheet 32 are inelastic stretchable and can be formed from various known fiber nonwoven fabrics including thermoplastic synthetic fibers, or composite sheets obtained by laminating them with a plastic film. The inner layer sheet 33 can be formed from various known fiber nonwoven fabrics that are inelastic stretchable and have moisture permeability (preferably, air permeability). As the thermoplastic synthetic fiber, for example, synthetic fibers such as polyethylene, polypropylene, polyethylene terephthalate, a mixture of synthetic fibers, or composite fibers using two or more kinds of these synthetic resins can be used. Moreover, as a fiber nonwoven fabric, various well-known fiber nonwoven fabrics, such as a spun bond fiber nonwoven fabric, an SMS fiber nonwoven fabric, and an air through fiber nonwoven fabric, can be used.

  As the front and rear waist elastic bodies 35 and 36, for example, a string-like or strand-like elastic material having a thickness of about 300 to 1000 dtex and an expansion ratio of 1.5 to 3.5 times can be used. Moreover, the thickness and expansion ratio of the front and rear waist elastic bodies 35 and 36 can be appropriately changed according to a predetermined elastic force in an elastic region in which they are arranged. However, as described later, the front waist elastic body is used to curve the first side edge 6 and / or the second side edge 7 of the diaper 10 so as to fall on either side of the front and rear waist regions 13 and 14. It is preferable to set so that the contraction force of 35 and the back waist elastic body 36 differ. In the present embodiment, the contraction force of the front waist elastic body 35 is set to be larger than the contraction force of the rear waist elastic body 36. In addition, although not shown, the contraction force of the front and rear waist elastic bodies 35 and 36 is present in the region where the absorbent core located in the absorbent panel 12 is in the center of the front and rear waist regions 13 and 14 in the lateral direction X. May be arranged in an inelastic region where the elastic bodies 35 and 36 are not substantially expressed or both elastic bodies 35 and 36 are not present. By disposing the non-elastic region in the region where the absorbent cores of the front and rear waist regions 13 and 14 are present, the contraction force of the elastic bodies 35 and 36 directly acts on the absorbent core, thereby reducing the absorbency. Can be suppressed.

  The outer layer sheet 30 and the intermediate sheet 32 are joined to each other via a plurality of joining lines (joining portions) 41 that extend continuously in the longitudinal direction Y and are separated from each other in the transverse direction X. The joining line 41 extends from the inner edge 16a, 17a to the outer edge 16b, 17b in the front and rear waist regions 13, 14, and connects the outer layer sheet 30 and the intermediate sheet 32 by heat welding means such as heat welding and ultrasonic machining. In the illustrated example, the welding line is a striped shape that extends continuously in the vertical direction Y, but is intermittently formed by arranging a plurality of dot-shaped welds in the vertical direction Y. There may be. In the following description based on FIGS. 3 to 5, the configuration of the front waist region 13 (front waist panel 16) will be mainly described, but the rear waist region 14 (rear waist panel 17) has the same configuration. Therefore, the description is omitted.

  Referring to FIGS. 2, 3, 4 (a) and 4 (b), when the length dimension L 1 in the longitudinal direction Y of the one side edge 4 A of the front waist region 13 is about 70 to 200 mm, the joining line 41 has a length dimension (dimension in the longitudinal direction Y) having a size equivalent to the length dimension L1 of the one side edge portion 4A. The joint line 41 has a width dimension (dimension in the lateral direction X) W1 of about 0.5 to 1.5 mm, and a separation dimension (pitch) R1 between joint lines adjacent to each other in the lateral direction X is about 5. 0 to 20.0 mm. Here, the “separation dimension R1 of the joining line 41” means a separation dimension between the side edges facing each other in adjacent lines in the lateral direction X.

  Although not shown, a graphic that is visible from the outside between the outer layer sheet 30 and the intermediate sheet 32 or between the intermediate sheet 32 and the inner layer sheet 33 at the center of the front and rear waist regions 13 and 14. A graphic sheet having Further, the dimension of the outer layer sheet 30 in the longitudinal direction Y is formed larger than that of the inner layer sheet 33 and the intermediate sheet 32, and the portion extending from the outer edge of the sheets 32, 33 to the outside in the longitudinal direction Y is inside ( It may be bent to the skin facing surface side) and fixed to the skin facing surface side of the inner layer sheet 33. Further, the rear waist panel 17 may have a trapezoidal shape having a larger outer dimension than the front waist panel 16, and a collar cover portion that extends further inward in the vertical direction Y from the side seam 23 may be formed. Further, although not shown, in the front and rear waist regions 13 and 14, the outer end portions 13B and 14B located on the waist opening 24 side and / or the inner end portions 13A and 14A located on the leg opening 25 side are joined lines. For example, the separation distance R1 of 41 may be smaller than that of the central portion.

  Referring to FIGS. 1, 4 (a), and 4 (b), the outer layer sheet 30 has a flange portion (non-joining portion) 45 positioned between the joining lines 41. The outer layer sheet 30 is joined to the elastic layer 31 that expands and contracts in the lateral direction X by a plurality of joining lines 41 that extend in the longitudinal direction Y and are separated from each other in the lateral direction X, and the elastic layer 31 is interposed between the joining lines 41. When the dimension in the lateral direction X of the outer layer sheet 30 is smaller than the dimension in the lateral direction X of the outer layer sheet 30, the flange 45 positioned between the joining lines 41 has a shape that is curved outward in the thickness direction Z. In the outer layer sheet 30, in the natural state, the ridges 45 and the groove portions where the joining lines 41 are located are alternately positioned in the lateral direction X, and the ridge portions 45 and the groove portions are connected in the lateral direction X, thereby undulating in the lateral direction X. It has the shape which repeated. In the present invention, the natural state refers to a state in which no force is applied to the diaper 10 from the outside. Since the outer layer sheet 30 is divided relatively small in the lateral direction X by the joining line 41, a plurality of irregularities (a plurality of gathers) are not formed in the collar portion 45, and a continuous convex curve is formed as a whole. Two convex bends are formed. In the elastic layer 31, the intermediate sheet 32 and the inner layer sheet 33 are joined to each other via a hot melt adhesive applied to the entire circumference of the waist elastic bodies 35 and 36. A plurality of relatively small gathers 46 and 47 that repeatedly undulate in the lateral direction X due to the contraction of the waist elastic bodies 35 and 36 are formed on both sheets 32 and 33, respectively. The flange portion 45 and the intermediate sheet 32 of the outer layer sheet 30 are separated from each other in the thickness direction Z, and a tubular or cylindrical space portion 50 extending in the longitudinal direction Y is formed therebetween.

  FIG. 5 is an enlarged view of a region surrounded by line V in FIG. FIG. 5 is a partially enlarged view of one side edge portion 4A of the front waist region 13 that forms the first side edge portion 6. In the front and rear waist regions 13, 14, the side seam 23 has the same shape and size. Since they are arranged in the same pattern, description of the one side edge portion 5B of the rear waist region 14 is omitted. Also, the second side edge 7 where the other side edge 4B of the front waist region 13 and the other side edge 5B of the rear waist region 14 are joined has the same configuration as the first side edge 6.

  Referring to FIG. 5, the side seam 23 has a line shape extending in the horizontal direction X, and includes an inner end edge 23 a positioned inside the horizontal direction X and an outer end edge 23 b positioned outside the horizontal direction X. Have. The first and second side edge portions 6 and 7 further have an extending portion 60 extending outward in the lateral direction X from the outer end edge 23 b of the side seam 23. The side seam 23 is a portion where the sheet members are welded and sealed, and is not present in clothing such as normal underwear. In order to make the diaper 10 look like underwear, the side seam 23 is It is preferable to make it as invisible as possible. However, when the side seam 23 is relatively small so as not to be visually recognized, the predetermined peel strength cannot be maintained, and the side seam 23 may be peeled off during wearing. The length dimension (dimension in the lateral direction X) L2 of the side seam 23 is preferably about 2.0 to 6.0 mm, and the width dimension (dimension in the longitudinal direction Y) W2 is preferably about 1.0 to 3.0 mm.

  6 is a side view of the diaper 10 in a non-wearing state, and FIG. 7 is a plan view of the diaper 10 in a top view (a plan view of the diaper 10 placed on the lower side from a viewpoint located on the upper side of the diaper 10). It is. 6 and 7, when the diaper 10 is viewed from the side and the top, the collar portion 45 is curved on the outer surface, so that the side seam 23 is hidden (distracted) by them. doing. As described above, in the diaper 10 according to this embodiment, the side seam 23 has a size (length dimension) enough to exhibit the required peel strength, and has a plurality of ribs 45 extending in the longitudinal direction Y on the outer surface. As a result, the side seam 23 is not conspicuous by being mixed with them, and an impression like underwear having a plurality of hook-shaped three-dimensional patterns can be given.

  FIG. 8A is a partially enlarged view of a region surrounded by the line VIIIa in FIG. 7, and FIG. 8B is an enlarged view of FIG. 8A and 8B, in the top view of the diaper 10, the first dimension from the skin facing surface (the inner surface of the inner layer sheet) to the apex 45a of the collar 45 (height dimension of the collar 45). H1 is equal to or larger than the second dimension (height dimension of the side seam 23) H2 from the skin facing surface to the outer edge 23b of the side seam 23. Here, the “equivalent” dimension means that the difference between one dimension and the other dimension is within 1.0 mm. Thus, when the first dimension H1 is equal to or larger than the second dimension H2, the side seam 23 is hidden by the plurality of flanges 45 in a top view, a side view, and a perspective view of the diaper 10. The diaper 10 can give the impression of underwear in appearance.

  The first dimension H1 that is the height dimension of the flange 45 is about 3.0 to 11.0 mm, and the second dimension H2 that is the height dimension of the side seam 23 is about 3.0 to 7.0 mm. Is preferred. When the second dimension H2 of the side seam 23 is about 2.0 mm or less, the side seam may be peeled off during wearing without having a predetermined peel strength. On the other hand, when the second dimension H2 is about 7.0 mm or more, the side seam 23 cannot be concealed by the collar portion 45, and the diaper 10 cannot have an appearance like underwear. Further, in order to have an appearance in which the side seam 23 is hidden by the plurality of flange portions 45, it is more preferable that the first dimension H1 is larger than the second dimension H2.

  Referring to FIG. 7, the first side edge 6 has a shape curved toward the front waist region 13. When the contraction force of the front and rear waist regions 13 and 14 is substantially the same, the first side edge 6 is projected in the lateral direction X without falling down on either side of the front and rear waist regions 13 and 14. In this embodiment, the contraction force of the front waist elastic body 35 is higher than the contraction force of the rear waist elastic body 36. Therefore, the shrinkage amount of the side edge portion 4A of the front waist region 13 in the first side edge portion 6 is larger than the shrinkage amount of the side edge portion 5A of the rear waist region 14, and the first side edge portion 6 Curved so as to lie down to the side. Thus, since the 1st side edge part 6 has a curved shape, when the 1st dimension H1 of the collar part 45 is equal to or slightly larger than the 2nd dimension H2 of the side seam 23, the former is the latter Further, the outer seam 23 protrudes outward, and the side seam 23 has an appearance that is hidden by the plurality of flanges 45.

  Referring again to FIG. 8, in the extending portion 60 of the first side edge portion 6, the distal end portion 30 a of the outer layer sheet 30 and the distal end portion 31 a of the elastic layer 31 are joined to each other. This is because, in the manufacturing process of the diaper 10, when the adjacent side edge portions 6 and 7 of the diaper 10 that are continuously produced are cut with a heating cutter, the tip portion 30a and the tip portion 31a are heat-sealed. . Further, since the outer layer sheet 30 is not contracted, and the elastic layer 31 contracts, the distal end portion 30a of the outer layer sheet 30 has an aspect that curves inward from the proximal end portion toward the distal end portion 30a. Since the front end portion 30a of the outer layer sheet 30 has a shape similar to the curved shape of the flange portion 45, the extended portion 60 of the first side edge portion 6 is distracted from the appearance of the flange portion 45 and distinguished from each other. It becomes difficult. On the other hand, although not shown in the drawings, when the adjacent side edge portions 6 and 7 are cut with a non-heated cutter in the manufacturing process of the diaper 10, the outer layer sheet is formed at the extension portion 60 of the first side edge portion 6. The distal end portion 30a of 30 and the distal end portion 31a of the elastic layer 31 are not joined to each other and are separated from each other. Combined with the fact that the outer side sheet 30 is not joined to the elastic layer 31 in the extending part 60, so that the first side edge part 6 is curved so as to fall toward the front waist region 13 side. In this state, the outer layer sheet 30 covers the side seam 23. Thus, since the outer layer sheet 30 that forms the extending portion 60 is separated from the elastic layer 31 and covers the side seam 23, the side seam 23 is hidden by the outer layer sheet 30 and is visible from the outside. Can be suppressed.

  In the diaper 10 according to the present embodiment, the first and second side edges 6 and 7 have such a mode that the side seam 23 is hidden by the flange 45, but the first and second side edges. It is sufficient that at least one of 6, 7 has such an aspect. That is, for example, in the second side edge portion 7, the flange portion 45 is not formed in the vicinity of the side seam 23, and it may not have an appearance that hides the flange portion 45. However, the first dimension H <b> 1 may not be sufficient to hide the side seam 23.

  2 and 3, the absorbent panel 12 is located on the skin-facing surface side, and is a liquid-absorbent absorbent material having an inner side sheet 51 made of a fiber nonwoven fabric having liquid permeability and curved side edges. The core 52, the liquid-impervious leak-proof sheet 53 that covers at least the entire bottom surface of the absorbent core 52 (the entire surface of the non-skin-facing surface), and the liquid-impermeable liquid that forms the entire non-skin-facing surface of the absorbent panel 12. And an outer sheet 54 of a sex. The absorbent core 52 includes a core material formed from a mixture of fluffed wood pulp and superabsorbent polymer particles, and a liquid-absorbing and diffusible core cover sheet (not shown) such as tissue paper covering the entire core material. ). The absorbent panel 12 is provided with a plurality of strand-like or string-like leg elastic bodies 55 extending in the longitudinal direction Y at both side edges. By arranging the leg elastic body 55, leg elastic regions are formed at both side edges of the crotch region 15, and the edge of the leg opening 25 is formed by the elastic regions of the front and rear waist regions 13 and 14 and the leg elastic region. A virtual elastic band extending annularly so as to surround the wearer's thigh in the wearing state is formed. In addition, although not shown in figure, in order to prevent the side leakage of excrement, a pair of leak-proof walls standing toward the wearer's body in the wearing state may be disposed on both sides of the absorbent panel 12. .

<Modification 1>
FIG. 9A is a view similar to FIG. 8A in an example of a modification, and FIG. 9B is a view similar to FIG. 8B in an example of a modification.

  In this modification, the first dimension H1 of the flange 45 is from the skin facing surface of the first side edge 6 (and / or the second side edge 7) to the outer edge 60a of the extension 60. It is equal to or slightly larger than the third dimension H3 which is the separation dimension. Since the first dimension H1 and the third dimension H3 are in such a correlation, the height of the flange 45 and the height of the first side edge 6 are substantially equal, and the first side edge is formed by the plurality of flanges 45. The diaper 10 can give the impression of underwear as compared with the appearance that only the side seam 23 is hidden. The difference between the first dimension H1 of the flange 45 and the third dimension H3 of the first side edge 6 is preferably about 3.0 mm or less.

  As in this modification, in order to satisfy the first dimension H1 ≧ the third dimension H3, the second dimension H2 of the side seam 23 is made relatively small, and is the height dimension of the entire first side edge portion 6. In addition to making the third dimension H3 relatively small, the size of the first dimension H1 may be appropriately set and changed so that the flange 45 is formed to be relatively large.

<Modification 2>
FIG. 10 is a diagram similar to FIG. 7 and FIG. 8B in another example of the modification.

  Referring to FIG. 10, in the present modification, in the front and rear waist regions 13 and 14 of the diaper 10, the first dimension H <b> 1 of the collar portion (non-joined portion) 45 is the center in the lateral direction X of the front and rear waist regions 13 and 14. From the part, it becomes large toward both side edge part 4A, 4B, 5A, 5B (1st and 2nd side edge part 6, 7). In this way, in the front and rear waist regions 13 and 14, the sizes of the flange portions 45 at the center portion and the both side portions are different, and the flange portions 45 located on both side portions are relatively large. Even when the first dimension H1 is small, the first and second side edges 6 and 7 have an appearance that is hidden, and the diaper 10 can give an impression of underwear. In the present modification, the sizes of the first dimension H1 and the third dimension H3 can be freely set as appropriate. However, in the illustrated embodiment, the flange portions 45 located on both sides of the front and rear waist regions 13,14. The first dimension H1 is approximately 1.2 times as large as the third dimension H3 of the first and second side edges 6 and 7, and the entire first and second side edges 6 and 7 are The appearance is hidden by the part 45.

<Measurement method for each dimension>
The measurement of the 1st dimension H1, the 2nd dimension H2, and the 3rd dimension H3 of the diaper 10 was performed as follows. First, as shown in FIG. 6, the 1st area 81 located in the upper end part (waist opening side) containing the 1st side edge part 6 (or 2nd side edge part 7) of the diapers 10, and a 1st area A second area 82 below 81 and located in the middle part, and a third area 83 located below the second area 82 and located at the lower end (leg opening side), Dimensions) Samples 1 to 3 having a size of 25.0 mm × length dimension (lateral direction X dimension) 50 mm were cut out.

  Next, Samples 1 to 3 cut out from the diaper 10 were placed on a flat mounting table so that the skin facing surface was a contact surface. In this stationary state, it cut | disconnected along the cutting line extended in the length direction (lateral direction X of the diaper 10) in the center part of the samples 1-3, and the cross-sectional-shaped electron micrograph was image | photographed. Using an electron micrograph of each sample, the distance from the skin-facing surface (contact surface) of any plurality of collars 45 (for example, five collars 45) to the apex 45a of the collar 45 is measured. The average value is the first dimension H1 (mm), and the distance between the skin facing surface and the outer edge 23b of the side seam 23 in the plurality of side seams 23 (maximum of three) is measured and averaged. The dimension H2 (mm), the distance between the outer end edge 60a of the extending portion 60 extending from the side seam 23 and the skin facing surface, was measured and averaged to obtain a third dimension H3 (mm).

  As long as there is no special description, the member which comprises the diaper 10 can use the well-known material normally used in this kind of field | area other than the material described in this specification without a restriction | limiting. . In addition, terms such as “first”, “second”, and “third” used in this specification are simply used to distinguish similar elements, positions, and the like.

6 1st side edge part 7 2nd side edge part 10 Diaper (disposable wearing article)
11 Elastic waist panel 12 Absorbent panel 13 Front waist area (1st or 2nd waist area)
14 Rear waist area (first or second waist area)
15 Crotch area 23 Side seam 23a Inner edge 23b of side seam Outer edge 24 of side seam 24 Waist opening 25 Leg opening 30 Outer layer sheet 31 Elastic layer 32 Intermediate sheet 33 Inner layer sheet 35 Front waist elastic body (elastic member)
36 Rear waist elastic body (elastic member)
41 Joining line (joining part)
45 Buttocks (non-joined part)
60 Extension part 60a Outer edge X of extension part Horizontal direction Y Vertical direction Z Thickness direction

Claims (10)

A longitudinal direction and a transverse direction intersecting with it, a skin facing surface and a non-skin facing surface, a first waist region that is one of the front and rear waist regions, and a second waist region that is the other of the front and rear waist regions; In a disposable wearing article including a crotch region located between the first and second waist regions, a waist opening and a pair of leg openings,
There are first and second side edges, in which side seams that join both side edges of the first and second waist regions to each other and an extending part that extends outward from the side seam in the lateral direction are located. And
In the natural state, the first waist region and the second waist region are formed with a plurality of ridges that continuously extend in the longitudinal direction and have a shape that is convex toward the non-skin facing surface side. And
In a top view, the first dimension from the skin facing surface to the apex of the heel portion is the outside of the side seam from the skin facing surface in at least the first side edge of the first and second side edges. The wearing article, which is equal to or larger than the second dimension up to the edge.   In a top view, the first dimension is equal to a third dimension from the skin facing surface to the outer edge of the extension part at least in the first side edge part of the first and second side edge parts. The wearing article according to claim 1, which is larger than that. The first and second waist regions have an outer layer sheet positioned on the non-skin facing surface side, and an elastic layer positioned on the skin facing surface side,
The outer layer sheet has a plurality of joint portions extending continuously or discontinuously in the longitudinal direction and a plurality of non-joint portions positioned between the joint portions, and is joined to the elastic layer at the joint portion. The wearing article according to claim 1, wherein one heel portion is formed at the non-joining portion.   The wearing article according to claim 3, wherein the outer layer sheet and the elastic layer extend to the extending portion.   The wearing article according to claim 4, wherein the outer layer sheet and the elastic layer are not joined to each other in the extension portion.   The wearing article according to claim 4, wherein, in the extending portion, a tip portion of the outer layer sheet and a tip portion of the elastic layer are joined to each other.   The elastic layer includes an intermediate sheet positioned on the non-skin facing surface side, an inner layer sheet positioned on the skin facing surface side, and a plurality of elastic members interposed between the intermediate sheet and the inner layer sheet; The wearing article in any one of Claims 3-6 which has these.   The said elastic layer has a non-stretchable intermediate sheet located in the said non-skin opposing surface side, and the inner layer sheet which can be expanded-contracted in the said horizontal direction located in the said skin opposing surface side. Wearing article as described in.   The wearing article according to any one of claims 3 to 8, wherein a dimension of the non-joining portion in the lateral direction is 5.0 to 20.0 mm.   The at least one of the first and second waist regions has a size in the lateral direction of the non-joined portion that increases from a central portion in the lateral direction toward both side edges. The wearing article in any one of 3-9.

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