JP6463126B2 - Disposable wearing items - Google Patents

Description

  The present invention relates to a disposable wearing article having a heel in the waist region.

  Conventionally, the appearance of disposable wearing articles such as disposable diapers has been improved. For example, Patent Document 1 discloses a first long sheet made of a nonwoven fabric and a second long sheet made of a liquid-impermeable material. A process is described in which a laminated sheet is obtained by laminating and intermittently joining the first and second long sheets in the longitudinal direction of each sheet. In this step, the first and second long sheets are sent out in the longitudinal direction of the sheet, the second long sheet is stretched in the longitudinal direction and overlapped with the first long sheet, and then the first long sheet and the second long sheet. A laminated sheet for use in a worn article is manufactured by intermittently joining a long sheet.

JP 2012-384 A

  According to the invention disclosed in Patent Document 1, when the second long sheet contracts, a ridge extending in a direction perpendicular to the longitudinal direction of the sheet is formed, thereby obtaining a laminated sheet having a soft texture. it can. In Patent Document 1, a resin film can be used as the liquid-impermeable second long sheet. It is also disclosed that the film is preferably a microporous polyethylene film.

  However, since this type of resin film is difficult to elastically stretch to a high stretch rate, there is a limit to the width of the wrinkles that are formed, and the wrinkles are wide and form a soft and comfortable touch. It is difficult. Moreover, since a liquid-impermeable resin film is laminated on the entire surface of the nonwoven fabric, when these laminated sheets are used for the wearing article, the wearing article is easily stuffy.

  In view of the above, an object of the present invention is to provide a disposable wearing article having an improved flexible heel structure.

  The present invention has a longitudinal direction, a lateral direction, a skin facing surface that faces the wearer's skin, and a non-skin facing surface that is the opposite surface, and includes a front waist region, a rear waist region, and a front and back waist region. The present invention relates to a disposable wearing article in which a crotch region located therebetween is formed.

The disposable wearing article of the present invention includes an inner sheet in which at least one of the front waist region and the rear waist region is disposed on the skin facing surface side, a composite outer sheet disposed on the non-skin facing surface side, and an inner sheet. And an elastic member which is interposed between the outer surface sheet and the composite outer surface sheet and bonded in a state of being stretched in the lateral direction, and the composite outer surface sheet is positioned on the skin facing surface side and the skin to which the elastic member is bonded Including a side sheet and a clothing side sheet that is positioned on the non-skin facing surface side and joined to the skin side sheet, and the skin side sheet and the clothing side sheet are either continuously or intermittently in the longitudinal direction. The first joints of the plurality of strips are welded to each other, the first joints of the plurality of strips are spaced apart from each other in the lateral direction, and in the longitudinal direction, the size of the skin side sheet is larger than the size of the clothing side sheet. The outer sheet is above the composite outer sheet. And an upper side region and a lower side region that extend in the horizontal direction along the lower side and are separated from each other in the vertical direction, and an intermediate region that extends in the horizontal direction between the upper side region and the lower side region, and the first joint portion is an intermediate region In at least one of the upper side region and the lower side region, the skin side sheet and the clothing side sheet are joined at a plurality of second joints extending in the vertical direction and spaced apart from each other in the horizontal direction, The interval between the second joints adjacent to each other is smaller than the interval between the first joints adjacent to each other .

  In the disposable wearing article according to the present invention, when the elastic member joined to the skin side sheet contracts in the lateral direction, the clothing side sheet forms a heel extending in the longitudinal direction. Since the clothing side sheet is lined by the skin side sheet and the inner surface sheet, a flexible sheet having a small mass per unit area can be used for the clothing side sheet, and the bag formed by the clothing side sheet Will also be soft and soft to the touch.

The drawings illustrate specific embodiments of the invention and include selective and preferred embodiments as well as the essential features of the invention.
The figure when the front part of the disposable diaper which is one Embodiment of this invention is seen from diagonally upward. The partial rupture expansion | deployment figure which shows the non-skin opposing surface when the diaper of FIG. 1 is expand | deployed planarly. The partial exploded assembly figure of the diaper of FIG. It is a figure which shows the cut surface which follows the IV-IV line | wire of FIG. 2, FIG. 4 (a) shows a cross section when an elastic member exists in an expansion | extension state, FIG. The cross section of is shown. The figure which expands and shows a part of VV sectional view of FIG. The figure similar to FIG. 1 which shows an example of embodiment. The figure similar to FIG. 2 which shows another example of embodiment.

  The following embodiments relate to the disposable wearing article of the present invention and include not only an indispensable structure of the invention but also a selective and preferable structure.

<First Embodiment>
As shown in FIGS. 1 and 2, the disposable diaper 1 according to this embodiment includes a front waist region 2 and a rear waist region 3 extending in the lateral direction X, and a crotch region 4 positioned between the front and rear waist regions 2 and 3. The front and rear waist regions 2 and 3 and the crotch region 4 have a skin facing surface in the diaper 1 and a non-skin facing surface that is the opposite surface. However, the non-skin facing surface may be referred to as a clothing facing surface in the present invention. The front and rear waist regions 2 and 3 are joined together along a pair of front waist side edges 13 and a pair of rear waist side edges 14 extending in the longitudinal direction Y to form a pants shape, and a waist opening 5 and a pair of leg openings 6 are formed. It is formed. The front waist region 2 and the rear waist region 3 include a front waist member 7 and a rear waist member 8, respectively. A front end portion 9 a and a rear end portion 9 b of a crotch member 9 extending in the longitudinal direction Y are fixed to the front waist member 7 and the rear waist member 8, respectively, and a part of the crotch member 9 is located in the crotch region 4. In addition, the diaper 1 in FIG. 2 develops the front waist region 2, the rear waist region 3, and the crotch region 4 of the diaper 1 in FIG. A line CC in FIG. 2 is a center line that bisects the dimension in the horizontal direction X of the diaper 1 in FIGS.

  The crotch member 9 includes a liquid-permeable top sheet 17, a liquid-impervious back sheet 18, an absorbent body 15 interposed between the top sheet 17 and the back sheet 18, and both side edges 9 c of the crotch member 9. Leg elastic body 16 extending in the longitudinal direction Y. As the absorbent body 15, those known in the technical field to which the present invention belongs can be used. For example, the absorbent body 15 formed by wrapping a mixture of particulate or fibrous superabsorbent polymer and fluff pulp with tissue paper is used. Can be used. The leg elastic body 16 is between the top sheet 17 and the back sheet 18 extending from the absorbent body 15 in the lateral direction X, and is hot-melt bonded to at least one of the sheets 17 and 18 in a state of being stretched in the longitudinal direction Y. Bonded by an agent (not shown). When the diaper 1 is worn, the leg elastic body 16 brings both side edges 9c of the crotch member 9 extending in the longitudinal direction Y into close contact with the wearer's leg. The absorber front end portion 15a and the absorber rear end portion 15b that form both ends in the longitudinal direction Y of the absorber 15 are respectively formed using a hot melt adhesive (not shown) on the front waist member 7 and the rear waist member 8. Be joined. If necessary in the diaper 1, a leak-proof cuff having a known structure can be provided along both side edges 9 c of the crotch member 9.

The front waist member 7 is a substantially rectangular sheet member. The rear waist member 8 is a sheet member having a rectangular portion 8 a and an extending portion 8 b whose width gradually decreases from the rectangular portion 8 a toward the crotch region 4. Each of the front waist member 7 and the rear waist member 8 includes an inner surface sheet 11 positioned on the skin facing surface side and a composite outer surface sheet 20 positioned on the non-skin facing surface side. The shapes of the front waist member 7 and the rear waist member 8 are the same as the shape of the inner surface sheet 11 included in each, and the extending portion 8 b of the rear waist member 8 is formed by the inner surface sheet 11. The composite outer surface sheet 20 is rectangular, is positioned on the skin facing surface side and is bonded to the skin side sheet 21 positioned on the non-skin facing surface side and the rectangular skin side sheet 21 to which the elastic member 12 described later is bonded. And a rectangular clothing side sheet 22. The lateral dimensions of the inner surface sheet 11, the skin side sheet 21, and the clothing side sheet 22 are substantially the same. The inner surface sheet 11, the skin side sheet 21, and the clothing side sheet 22 are preferably non-stretchable sheet members having air permeability, and can be formed of a nonwoven fabric or a film made of thermoplastic resin. For example, the clothing side sheet | seat 22 can be formed using the nonwoven fabric made from a thermoplastic resin which has the mass per unit area in the range of 8-15 g / m < ² >, and the fineness is in the range of 1-4 dtex. Examples of the thermoplastic resin include polyethylene and polypropylene, and examples of the nonwoven fabric include, but are not limited to, a spunbond nonwoven fabric and a melt blown nonwoven fabric.

  2 and 3, the rectangular composite outer sheet 20 included in the front waist member 7 and the rear waist member 8 is adjacent to the upper side and the lower side of the clothing side sheet 22 extending in parallel to each other in the lateral direction X. The upper side region 20a and the lower side region 20c that extend and are separated from each other in the vertical direction Y, and the intermediate region 20b that extends between the upper side region 20a and the lower side region 20c and extends in the horizontal direction X are partitioned. The vertical dimension of the intermediate region 20b occupies 50 to 80% of the vertical dimension of the composite outer sheet 20. In addition, since the composite outer surface sheet 20 included in each of the front and rear waist members 7 and 8 has almost the same configuration, only the composite outer surface sheet 20 on the front waist member 7 side is illustrated in FIG. In the diaper 1, the upper side region 20 a of the composite outer sheet 20 forms an opening edge 5 a of the waist opening 5 and extends in the lateral direction X. In the intermediate region 20b of the composite outer sheet 20, a plurality of first joint portions 31 that are separated from each other in the lateral direction X, extend in the longitudinal direction Y in parallel with the center line CC, and intersect the elastic member 12 are provided. Has been placed. In the upper side region 20a and the lower side region 20c, a plurality of second joint portions 41 are separated from each other in the lateral direction X and extend in a direction crossing the elastic member 12. The skin side sheet 21 and the clothing side sheet 22 are joined to each other at the first joint portion 31, and the clothing side sheet 22 and the skin side sheet 21 are not joined between the first joint portions 31 adjacent to each other. It is in.

  The first joint portion 31 is formed in the front waist region 2 and / or the rear waist region 3 at a portion adjacent to each of the pair of front waist side edges 13 and / or each of the pair of rear waist side edges 14. The part adjacent to the front and rear waist side edges 13 and 14 is a part located between the front and rear waist side edges 13 and 14 and the absorber 15. It is preferable to employ ultrasonic welding for joining the skin side sheet 21 and the clothing side sheet 22 at the first joint portion 31. When the skin-side sheet 21 and the clothing-side sheet 22 are joined using a heated embossing roll or an adhesive, the skin-side sheet 21 and / or the clothing-side sheet 22 other than the first joint portion 31 is used. However, if ultrasonic welding is employed, the occurrence of such a problem can be prevented. Further, according to ultrasonic welding, since a high bonding strength can be obtained, the area of the bonding portion required for welding may be small, and in that sense, the softness of the front waist member 7 and the rear waist member 8 may be impaired. Absent.

  The skin side sheet 21 and the clothing side sheet 22 can be joined at the second joint portion 41 by any one of ultrasonic welding, thermal welding, and adhesion using a hot melt adhesive.

  Between the inner surface sheet 11 and the skin side sheet 21 of the composite outer surface sheet 20, a plurality of elastic members 12 are interposed in a state of extending in the lateral direction X, with respect to at least one of these sheets 11, 21. Joining via a hot melt adhesive (not shown). In the illustrated example, a plurality of elastic members 12 are arranged in each of the upper side region 20a, the intermediate region 20b, and the lower side region 20c of the composite outer sheet 20. The separation dimension between the elastic members 12 adjacent to each other in the intermediate region 20b is larger than the separation dimension between the elastic members 12 adjacent to each other in the upper side region 20a and the lower side region 20c. As the elastic member 12, for example, an elastic yarn of polyurethane can be used. The inner surface sheet 11 and the skin side sheet 21 are joined together by a hot melt adhesive (not shown) applied in a dot shape or a spiral shape.

  In FIG. 4A showing the cut surface along the line IV-IV in FIG. 2, the front waist member 7 is pulled in the lateral direction X, and the elastic member 12 is in an extended state. In FIG. 4B, the front waist member 7 is in a contracted state due to the contraction of the elastic member 12. In the intermediate area 20b of the composite outer surface sheet 20, the clothing side sheet 22 is not joined to the skin side sheet 21 between the first joining parts 31 adjacent to each other, so the front waist member 7 is shown in FIG. When changing from the state shown in FIG. 4B to the state shown in FIG. 4 (b), the clothing side sheet 22 bulges away from the skin side sheet 21 between the first joint portions 31 and 31 and extends in the lateral direction X. A plurality of ridges 23 extending in the intersecting longitudinal direction Y (see FIG. 1) are formed. When the elastic member 12 contracts in the lateral direction X, a large number of fine vertical rods 24 a and 24 b are generated on the skin side sheet 21 and the inner surface sheet 11. In such a front waist member 7, the vertical collar 24 a formed on the skin side sheet 21 and the clothing side sheet 22 by adjusting the distance between the first joint portions 31 and 31 adjacent to each other, that is, the interval. A heel 23 having a height and width larger than the height and width of 24 b can be formed on the clothing side sheet 22.

  In addition, in the front waist area 7, when the junction part extended in the horizontal direction X in parallel with the elastic member 12 as an alternative to the 1st junction part 31, the horizontal direction X is usually parallel to the junction part. A ridge extending in the vertical direction Y may be formed. However, in this case, the kite does not have a means for guiding the kite in the vertical direction Y, and therefore does not become as shown in FIG. 4B, which is regularly and orderly arranged according to the arrangement of the first joint portions 31. In the present invention, the first joint portion 31 is formed so as to intersect the elastic member 12 in parallel with the center line C-C and to be regularly arranged in the lateral direction X at a constant interval. In parallel with the center line C-C, they are arranged at a constant interval in the lateral direction X and have the same height and width.

In the first joint portion 31, the clothing side sheet 22 and the skin side sheet 21 are melted and solidified by welding. For this reason, the 1st junction part 31 cannot change easily compared with the clothing side sheet | seat 22 located between the 1st junction parts 31 and 31. FIG. The first joint portion 31 has various shapes of the ridges 23 formed when the elastic member 12 contracts by changing the planar shape and the arrangement pattern between the first joint portions 31 in various ways. Can be changed. For example, as illustrated in FIG. 3, each of the plurality of first joining portions 31 can be extended intermittently in addition to continuously extending in the vertical direction Y with a certain width. In any case, the heel 23 having a certain width and height extends straight without being bent, and the appearance of the clothing side sheet 22 is clean. Note that the height of the flange 23 is determined by the distance between the adjacent first joint portions 31 and 31 and the amount of contraction of the elastic member 12.

  If the first joint portion 31 extends in parallel with the center line CC, the shape of the first joint portion 31 can be further changed. For example, instead of continuously extending the plurality of first joining portions 31 in the longitudinal direction Y, the first joining portions 31 can be extended in a meandering state with respect to the longitudinal direction Y.

  When the clothing side sheet 22 is separated from the skin side sheet 21 to form the heel 23, light that tends to pass through the clothing side sheet 22 is likely to be scattered, and therefore interposed between the inner surface sheet 11 and the skin side sheet 21. By concealing the elastic member 12 so as not to stand out, it is possible to relieve a strong tightening feeling on the appearance that may be caused by the presence of the elastic member 12. In particular, when the skin-side sheet 21 forms a large number of vertical ridges 24a on the inner side of the ridge 23 as in the illustrated example, the effect of hiding the elastic member 12 is enhanced. In addition, since the clothing side sheet 22 is welded to the skin side sheet 21 at the first joint portion 31 and is in a state where it is difficult to deform each other, even when the elastic member 12 joined to the skin side sheet 21 contracts, The vertical scissors 24 are hardly formed on the skin side sheet 21 located at the joint portion 31.

  In the upper side region 20a and the lower side region 20c illustrated in FIG. 3, the interval between the second junctions 41 adjacent to each other is smaller than the interval between the first junctions 31 adjacent to each other in the intermediate region 20b. It is preferable to do. By doing in this way, in the upper side area | region 20a and the lower side area | region 20c, the skin side sheet | seat 21 and the clothing side sheet | seat 22 become an external appearance as if it were one sheet | seat, and the external appearance of the diaper 1 Becomes beautiful.

  As illustrated in FIGS. 1 and 5, each of the first joint portions 31 obtained by joining the skin side sheet 21 and the clothing side sheet 22 by ultrasonic welding is in a state of overlapping the first joint portion 31. It is preferable that the peel strength between the skin-side sheet 21 and the clothing-side sheet 22 is improved by interspersing the dot-shaped welded portions 32 in contact with the first joint portion 31 in the longitudinal direction Y. The dot-shaped welded portion 32 is formed by ultrasonic welding, but the dimension in the lateral direction X is the same as the dimension in the lateral direction X of the first joint 31 or the dimension in the lateral direction X of the first joint 31. Is bigger than that. In the dot-shaped welded portion 32, the skin-side sheet 21 and the clothing-side sheet 22 are compressed so that the thicknesses of the sheets 21 and 22 in the first joint portion 31 are thinner. Does not peel off easily. However, as is apparent with reference to FIG. 5, when the cross section in the thickness direction of the composite outer sheet 20 is observed, the cross-sectional shape of the dot-shaped welded portion 32 is a concave portion whose thickness is smaller than that of the first joint portion 31. In addition to the case in which 33 is formed, there may be a case in which an opening 34 penetrating the composite outer sheet 20 is formed in the recess 33. When the opening 34 is formed, the dot-like welded portion 32 has the skin side sheet 21 and the clothing side sheet 22 welded at the peripheral edge of the opening 34, and the opening 34 is formed in the front waist region 2 and the rear. This contributes to improving the air permeability of the waist region 3. Since the dot-shaped welded portion 32 is covered from the inner side by the inner surface sheet 11, body fluid is prevented from leaking from the opening 34 when the diaper 1 is worn. Further, the ridges 23 formed on both sides of the first joint portion 31 act so as to cover the dot-like welded portion 32 together with the first joint portion 31, so that the skin touches the peripheral edge of the dot-like welded portion 32. You will never be stimulated.

  When forming the 1st junction part 31 and the dot-shaped welding part 32, the space | interval between the dot-shaped welding parts 32 adjacent in the vertical direction Y is the vertical direction Y between the mutually adjacent elastic members 12. FIG. It is preferable to make it larger or smaller than the interval. For example, by making the interval between the dot-like welded portions 32 smaller than the interval between the elastic members 12, the frequency of occurrence of overlap between the elastic member 12 and the dot-like welded portion 32 is reduced, and the dot-like It can prevent that the opening 34 in the welding part 32 is obstruct | occluded by the elastic member 12, and the air permeability of the front waist area 2 and / or the back waist area falls. The shape of the dot-shaped welded portion 32 is not limited to a circle, and may be an arbitrary shape such as a rectangle or a star.

  In the present invention, a known graphic sheet 51 with a design can be disposed in at least one of the front and rear waist regions 2 and 3. For example, as shown in FIG. 6, the graphic sheet 51 can be disposed between the skin side sheet 21 and the clothing side sheet 22. Since the graphic sheet 51 is covered only with the clothing side sheet 22, the graphic sheet 51 has good visibility. In order to further improve the visibility, the first joining portion 31 is provided or not provided in the region where the clothing side sheet 22 and the graphic sheet 51 overlap, and the elastic member 12 in the portion overlapping the graphic sheet 51 is provided. It is preferable that the heel 23 is not formed on the clothing side sheet 22 of the portion covering the graphic sheet 51 by cutting and contracting or removing it. It is preferable that the end portion 12a of the elastic member 12 that has been cut and contracted is overlapped with the peripheral edge portion 51a of the graphic sheet 51 and bonded to each other via a hot melt adhesive. By doing so, the visibility of the graphic sheet 51 is further improved.

  In FIG. 2, the width of the first joint portion 31, that is, the dimension in the lateral direction X is preferably smaller than the interval between the first joint portions 31 adjacent to each other, and is 0.3 to 2 mm. Is more preferable. When the first joint portion is like this, the first joint portion 31 and the dot-like welded portion 32 when the elastic member 12 contracts are in a valley formed between the heel 23 and the heel 23, Since it becomes easy to be concealed, the finger is difficult to touch, and even if touched, the finger does not give a hard touch. Moreover, it is preferable that the space | interval between the mutually adjacent 1st junction parts 31 is 7-15 mm. The ridges 23 generated from such intervals are easy to conceal the first joint portion 31 and the dod welded portion 32. When the interval between the first joint portions 31 is smaller than 7 mm, the width of the ridges 23 formed by the contraction of the elastic member 12 is small, and the ridges 23 have poor flexibility. It becomes difficult to hide. If the distance exceeds 15 mm, the width of the heel 23 is increased and the appearance of the diaper 1 is difficult to be light. If the width of the first joint portion 31 is less than 0.3 mm, the first joint portion 31 becomes easily deformable, and it becomes difficult to keep the shape of the flange 23 straight. If the width of the first joint portion 31 is set to 0.3 mm or more, the first joint portion 31 that becomes the base portion of the flange 23 is likely to extend straight in the vertical direction Y, and the flange 23 also extends to the center line CC. It tends to extend straight in parallel.

  When the 1st junction part 31 is arrange | positioned in the front-and-back waist areas 2 and 3, the direction between the 1st junction parts 31 mutually adjacent in the front waist area 2 is the 1st junction adjacent to each other in the back waist area 3. It is preferable that it is narrower than the space | interval between the parts 31 (refer FIG. 2). For example, the interval between the first joint portions 31 in the front waist region 2 can be 8 mm, and the interval between the first joint portions 31 in the rear waist region 3 can be 10 to 12 mm. By doing in this way, the front waist area 2 (refer FIG. 1) when the diaper 1 is seen from the front becomes a thing of the vertical stripe pattern formed by many small ridges 23. FIG. On the other hand, the rear waist region 3 side has a soft tactile sensation due to the presence of a large number of wide ridges 23.

  In FIG. 3, the longitudinal dimension of the clothing side sheet 22 is made smaller than the longitudinal dimension of the skin side sheet 21, and both longitudinal ends of the clothing side sheet 22 are joined to the skin side sheet 21 at the second joint portion 41. It is preferable. If it does in this way, it can prevent that the longitudinal direction both ends of the clothing side sheet | seat 22 float from the skin side sheet | seat 21. FIG. It is preferable that the space | interval of the 2nd junction part 41 adjacent to each other does not become smaller than 5 mm.

The clothing side sheet 22 is preferably a sheet member having a soft tactile sensation. Since the clothing side sheet 22 is lined by the skin side sheet 21 and the inner surface sheet 11 and does not require exceptionally high strength, a non-woven fabric that has a small mass per unit area and is flexible and has a good touch. Can be used. Such a nonwoven fabric is also preferable in terms of facilitating the formation of the ridges 23. For example, the clothing side sheet | seat 22 can be formed with the nonwoven fabric whose mass per unit area is 8-15 g / m < ² >, and the nonwoven fabric which is such a nonwoven fabric, and added or apply | coated the lubricant. The clothing side sheet 22 has a concealing effect on the elastic member 21 by forming the collar 23, but the clothing side sheet 22 also has a total light transmittance (JIS K 7361) exceeding 80%. Even when formed with a non-woven fabric, there is a concealing effect on the elastic member 12 disposed on the front waist member 7 and the rear waist member 8, and a feeling of tightening by the elastic member 22 that may occur when the elastic member 12 is seen through. Can be eliminated.

<Second Embodiment>
In 1st Embodiment, the three-piece type diaper which has three members, the front waist member 7, the back waist member 8, and the crotch member 9, was demonstrated about the collar structure which concerns on this invention. However, the bag structure of the present invention can be applied to diapers of any shape. For example, as illustrated in FIG. 7, the tape can be provided on a diaper 1 (also referred to as an open type). In the following description of FIG. 7, the description overlapping with that of the first embodiment is omitted.

  The tape-type diaper 101 of FIG. 7 includes an hourglass-type chassis 102 that is partitioned into a front waist region 2 and a rear waist region 3, and a crotch region 4 located between the front and rear waist regions 2 and 3. The chassis 102 includes an inner surface sheet 111 that defines the outer shape of the chassis 102, an absorbent body 15 that is disposed on the skin facing surface side of at least the crotch region 4 of the inner surface sheet 111, and front and rear waist regions 2 and 3 of the inner surface sheet 111. The composite outer surface sheet 20 including the skin side sheet 21 and the clothing side sheet 22 and the inner surface sheet 111 and the skin side sheet 21 of the composite outer surface sheet 20 stretched in the lateral direction X. And an elastic member 12 joined in a state. Since the absorber 15 and the composite outer sheet 20 have the same configuration as that of the first embodiment, detailed description thereof is omitted. The chassis 102 can be formed using a known material such as a nonwoven fabric or a resin film. Leg elastic members 116 are disposed along a pair of curved portions located on both sides of the hourglass-shaped chassis 102, and the rear waist side edge 14 extending parallel to each other in the longitudinal direction Y in the rear waist region 3 A tab 117 having a hook and loop fastener for connecting the rear waist region 3 to the waist region 2 can be provided.

  In the example shown in FIG. 7, the composite outer surface sheet 20 disposed in the front and rear waist regions 2 and 3 is rectangular, but in either one of the front and rear waist regions 2 and 3, the composite outer surface sheet 20 faces the crotch region 4. It can be extended to match the shape of the hourglass chassis 102. Moreover, the composite outer surface sheet 20 can be disposed only in one of the front and rear waist regions 2 and 3.

The disclosure related to the wearing article of the present invention described above can be organized into at least the following matters.
It has a longitudinal direction, a lateral direction, a skin facing surface that faces the wearer's skin, and a non-skin facing surface that is the opposite surface, and is located between the front waist region, the rear waist region, and the front and back waist regions. A disposable wearing article in which a crotch region is formed, and at least one of a front waist region and a rear waist region is disposed on an inner sheet disposed on a skin facing surface side and a non-skin facing surface side A composite outer sheet, and an elastic member that is interposed between the inner sheet and the composite outer sheet and bonded in a laterally stretched state, and the composite outer sheet is positioned on the skin facing surface side. A skin-side sheet to which the elastic member is joined, and a clothing-side sheet that is located on the non-skin-facing surface side and is joined to the skin-side sheet, the skin-side sheet and the clothing-side sheet being continuous in the vertical direction and In a plurality of first joints extending intermittently in any manner Welded, a first junction of plural rows are apart from each other in the transverse direction, in the vertical direction, the dimension of the skin-side sheet is greater than the size of the garment side sheet, the composite outer face sheet, the upper side of the composite backsheet and The upper side region and the lower side region that extend in the horizontal direction along the lower side and are separated from each other in the vertical direction, and the intermediate region that extends in the horizontal direction between the upper side region and the lower side region are partitioned. Yes, in at least one of the upper side region and the lower side region, the skin side sheet and the clothing side sheet are joined at a plurality of second joints extending in the vertical direction and spaced apart from each other in the horizontal direction, The distance between adjacent second joints is smaller than the distance between adjacent first joints .

The present invention relating to the wearing article disclosed in paragraph 0035 can include at least the following embodiments. The embodiments can be adopted separately or in combination with each other.
(1) It further includes an absorbent body extending from the crotch region to the front waist region and the rear waist region, and in the lateral direction, the first joint portion is a range between each side edge of the front waist region and the absorbent body, and the rear waist. It is formed in at least one of the ranges between each side edge of the region and the absorber.
(2) In the lateral direction, the width of the first joint portion is smaller than the interval between the first joint portions adjacent to each other.
(3) In the lateral direction, the interval between the first joints adjacent to each other is 7 to 15 mm.
(4) The first joint portion is in the front waist region and the rear waist region, and the first joint portions adjacent to each other in the front waist region are adjacent to each other in the rear waist region. Is less than the interval between.
( 5 ) The clothing side sheet is formed of a nonwoven fabric of thermoplastic synthetic fibers having a mass per unit area in the range of 8 to 15 g / m ² and a fineness in the range of 1 to 4 dtex.
( 6 ) The clothing side sheet is a sheet whose total light transmittance (JIS K 7361) does not exceed 80%.
( 7 ) The first joint portion extends continuously in the vertical direction.
( 8 ) Either the aspect in which the first joint portion extends in the longitudinal direction or the aspect in which the first joint portion extends intermittently, and the aspect in which the first joint portion overlaps the first joint portion or the aspect in contact with the first joint portion The dot-like welded portions in the aspect are scattered in the vertical direction, and the composite outer surface sheet is compressed to such an extent that the thickness does not exceed the thickness of the first joint portion.
( 9 ) An opening penetrating the composite outer sheet is formed in the dot-like welded portion.
( 10 ) In the first joint portion, the skin side sheet and the clothing side sheet are welded to each other by ultrasonic welding.
( 11 ) A graphic sheet having a pattern is disposed between the skin side sheet and the clothing side sheet.
( 12 ) In the vertical direction, the interval between the elastic members adjacent to each other is different from the interval between the adjacent dot welds.

1 Diaper (disposable wearing article)
2 front waist region 3 rear waist region 4 crotch region 11 inner surface sheet 12 elastic member 13 front waist side edge 14 rear waist side edge 20 composite outer surface sheet 20a upper side region 20b middle region 20c lower side region 21 skin side sheet 22 clothing side sheet 31 first 1 joint 32 dot-like weld 33 recess 34 opening 41 second joint 51 graphic sheet 101 tape-type diaper (disposable wearing article)
111 Inner surface sheet X Horizontal direction Y Vertical direction

Claims (13)

It has a vertical direction, a horizontal direction, a skin facing surface that faces the wearer's skin, and a non-skin facing surface that is the opposite surface, and is located between the front waist region, the rear waist region, and the front and rear waist regions. A disposable wearing article in which a crotch region is formed,
At least one of the front waist region and the rear waist region is an inner sheet disposed on the skin facing surface side, a composite outer sheet disposed on the non-skin facing surface side, the inner sheet and the composite Having an elastic member interposed between the outer surface sheet and joined in an extended state in the lateral direction,
The composite outer surface sheet is positioned on the skin facing surface side and the skin side sheet to which the elastic member is bonded, and the clothing side sheet positioned on the non-skin facing surface side and bonded to the skin side sheet. Including
The skin-side sheet and the clothing-side sheet are welded to each other in a plurality of first joint portions extending in the longitudinal direction in either a continuous or intermittent manner, and the plurality of first joint portions are in the lateral direction. Are spaced apart from each other ,
In the longitudinal direction, the size of the skin side sheet is larger than the size of the clothing side sheet,
The composite outer surface sheet extends between the upper side region and the lower side region extending in the horizontal direction along the upper and lower sides of the composite outer surface sheet and spaced apart from each other in the vertical direction, and between the upper side region and the lower side region. Divided into an intermediate region extending in the direction,
The first joint is in the intermediate region;
In at least one of the upper side region and the lower side region, the skin side sheet and the clothing side sheet are joined at a plurality of second joints extending in the longitudinal direction and spaced apart from each other in the lateral direction,
The wearing article , wherein, in the lateral direction, an interval between the second joints adjacent to each other is smaller than an interval between the first joints adjacent to each other .   It further includes an absorbent body extending from the crotch region to the front waist region and the rear waist region, and in the lateral direction, the first joint portion is between each of the side edges of the front waist region and the absorbent body. The wearing article according to claim 1, wherein the article is formed in at least one of a range between the two side edges of the rear waist region and the absorber.   The wearing article according to claim 1 or 2 whose width of said 1st joined part is smaller than the interval between said 1st joined parts adjacent to each other in said transverse direction.   The wearing article according to claim 3, wherein in the lateral direction, the interval between the first joint portions adjacent to each other is 7 to 15 mm. The first joint is in the front waist region and the rear waist region;
The distance between the first joints adjacent to each other in the front waist region is smaller than the distance between the first joints adjacent to each other in the rear waist region. The wearing article in any one. The garment side sheet, there mass per unit area in the range of 8~15g / m ^2, one fineness of claims 1 to 5, which is formed by a nonwoven fabric of thermoplastic synthetic fibers in the range of 1~4dtex The wearing article according to crab. The wearing article according to any one of claims 1 to 6 , wherein the clothing side sheet is a sheet having a total light transmittance (JIS K 7361) not exceeding 80%. The wearing article according to any one of claims 1 to 7 , wherein the first joint portion extends continuously in the longitudinal direction. Either the aspect in which the first joint portion extends continuously in the longitudinal direction or the aspect in which the first joint portion extends intermittently, and the aspect in which the first joint portion overlaps the first joint portion or the aspect in contact with the first joint portion In the aspect, the dot-like welded portions are scattered in the vertical direction, and in the dot-like welded portion, the composite outer surface sheet is compressed to the extent that it does not exceed the thickness of the first joint portion. the wearing article according to any one of claims 1-7. The wearing article according to claim 9 , wherein an opening penetrating the composite outer surface sheet is formed in the dot-shaped welded portion. The wearing article according to any one of claims 1 to 10 , wherein in the first joint portion, the skin side sheet and the clothing side sheet are welded to each other by ultrasonic welding. The wearing article according to any one of claims 1 to 11 , wherein a graphic sheet having a pattern is disposed between the skin side sheet and the clothing side sheet. The wearing article according to claim 9 , wherein in the longitudinal direction, an interval between the elastic members adjacent to each other is different from an interval between the dot-shaped welded portions adjacent to each other.

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