JP6407693B2 - Disposable wearing items - Google Patents

Disposable wearing items Download PDF

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JP6407693B2
JP6407693B2 JP2014252872A JP2014252872A JP6407693B2 JP 6407693 B2 JP6407693 B2 JP 6407693B2 JP 2014252872 A JP2014252872 A JP 2014252872A JP 2014252872 A JP2014252872 A JP 2014252872A JP 6407693 B2 JP6407693 B2 JP 6407693B2
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sheet
sweat
side
body
direction
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JP2016112167A (en
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航平 武士俣
航平 武士俣
加藤 隆弘
隆弘 加藤
猛史 宮村
猛史 宮村
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花王株式会社
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Description

  The present invention relates to a disposable wearing article such as a pants-type disposable diaper.

  Conventionally, as a pants-type disposable diaper, an absorbent main body having a liquid-retaining absorbent body and an exterior body disposed on the non-skin-facing surface side of the absorbent main body, corresponding to the front-rear direction of the wearer The front body and the back are divided into a front body located on the stomach side of the wearer and a back body located on the back side when worn in the longitudinal direction. In general, a pair of side seal portions, a waist opening portion and a pair of leg opening portions are formed by joining both side edge portions along the longitudinal direction of the exterior body in each body. For example, Patent Documents 1 and 2 disclose a technique in which a sweat-absorbing sheet made of a material having excellent hydrophilicity is disposed on a portion of the pant-type disposable diaper configured as described above that contacts the wearer's skin in a worn state. Has been.

JP 2013-172863 A Special table 2001-327534

  However, the technology described in each of the above-mentioned patent documents has room for improvement with respect to aligning the absorbability of sweat, the appearance of the diaper in a worn state, and the fit of the diaper to the wearer's body. It was what had.

  Accordingly, an object of the present invention is to improve a disposable wearing article, and more specifically, to provide a disposable wearing article that satisfies sweat absorbability, an excellent appearance in a worn state, and a good wearing feeling. .

The present invention has an absorptive main body having a longitudinal direction corresponding to the wearer's front-rear direction and a lateral direction perpendicular thereto, and having a liquid-retaining absorbent, and the non-skin facing side of the absorbent main body And a pair of side seal portions, a waist opening portion, and a pair of the front body and the back body that are joined to each other along the longitudinal direction of the exterior body. It is a disposable wearing article in which a leg opening is formed,
The exterior body includes an outer layer sheet positioned on a side relatively far from the wearer's body, and an inner layer sheet positioned on a side relatively closer to the wearer's body,
A sweat-absorbing sheet capable of absorbing sweat is disposed on the skin-facing surface of at least the waist part of at least the back body of the front body and the back body,
The sweat absorbing sheet has at least a part of the region directly facing the outer layer sheet,
The sweat-absorbing sheet has a structure in which an elastic member is disposed between two fiber sheets, and is capable of expanding and contracting in the lateral direction.
The sweat absorbing sheet has a pair of side edges extending in the vertical direction and a pair of end edges extending in the horizontal direction, and each side region including each side edge is joined to another member in the side seal portion. The outer end region including the end edge located on the outer side in the vertical direction is joined to another member, and the inner end region including the end edge located on the inner side in the vertical direction is The present invention provides a disposable wearing article that is a non-joined portion that is not joined to another member.

  ADVANTAGE OF THE INVENTION According to this invention, the disposable wear article with which the absorbency of sweat, the outstanding external appearance in a wearing condition, and a favorable mounting feeling are located in a line is provided.

FIG. 1 is a perspective view schematically showing a pants-type disposable diaper that is an embodiment of the disposable wearing article of the present invention. FIG. 2 is a developed plan view schematically showing the skin facing surface side (inner surface side) in the developed and extended state of the diaper shown in FIG. 3 is a cross-sectional view taken along line III-III shown in FIG. 4 is a cross-sectional view taken along line IV-IV shown in FIG. FIG. 5 is an enlarged view of a main part of the developed plan view shown in FIG. FIG. 6 is a partially broken perspective view schematically showing an example of a part of the stretchable outer layer sheet (abdominal side outer layer sheet) constituting the outer package of the diaper shown in FIG. 1. FIG. 7 is a cross-sectional view in the thickness direction when the sweat absorbent sheet of the diaper shown in FIG. 1 is viewed along the lateral direction.

  The present invention will be described below based on preferred embodiments with reference to the drawings. 1 to 4 show a pants-type disposable diaper 1 that is an embodiment of the disposable wearing article of the present invention. The diaper 1 has a vertical direction X corresponding to the wearer's front-rear direction and a horizontal direction Y orthogonal thereto. The diaper 1 includes an absorbent main body 2 having a liquid-retaining absorbent body 23 and an exterior body 3 disposed on the non-skin facing surface side of the absorbent main body 2 and fixing the absorbent main body 2. Prepare. The diaper 1 includes a front body F and a back body R. By joining the side edge portions FS, RS along the longitudinal direction X of the outer body 3 in each of the front body F and the back body R, the diaper 1 has a pair of side seal portions S, S and a wearer's torso. And a pair of leg openings LH and LH through which the wearer's lower limb is passed.

  As shown in FIG.2 and FIG.3, the front body F is a part which covers the front side (abdominal side) of a wearer's body at the time of wear on the basis of the vertical centerline Lx which bisects the diaper 1 to the vertical direction X, The back body R is a portion that covers the back side (back side) of the wearer's body. In this specification, a skin opposing surface is a surface (side close to a wearer's skin) in the wearing state in the diaper 1 and its constituent members (for example, the absorbent main body 2). Moreover, a non-skin opposing surface is a surface (side relatively distant from the skin rather than a skin opposing surface) in the wearing state in the diaper 1 and its structural member, and is turned to the opposite side to a wearer's skin side.

  The diaper 1 is a belly side part 1A arranged on the stomach side of the wearer in the wearing state, a back side part 1C arranged on the back side, and an inseam located between them and arranged in the crotch part of the wearer Part 1B. The longitudinal direction X of the diaper 1 is a direction extending between the front body F and the back body R, that is, a direction extending between the abdominal side part 1A and the back side part 1C via the crotch part 1B, and absorbency It coincides with the longitudinal direction of the main body 2. The ventral portion 1A is a part of the front body F. The back side 1C is a part of the back body R. The crotch 1B extends over the front body F and the back body R. The abdominal side portion 1A and the back side portion 1C are portions that are in the same position as the side seal portion S in the longitudinal direction X, and are waist portions that are arranged around the wearer's waist when the diaper 1 is worn. The crotch part 1 </ b> B is a region in which concave openings (leg edges LS, LS) for forming leg openings LH, LH are formed at both side edges along the longitudinal direction X of the exterior body 3. The crotch part 1B has an excretion part facing part that is disposed to face the excretion part of the wearer when the diaper 1 is worn, and the excretion part facing part is usually a central part (vertical center) of the diaper 1 in the longitudinal direction X. (On line Lx) or in the vicinity thereof.

  The absorptive main body 2 has a rectangular shape in plan view as shown in FIGS. The absorbent main body 2 has its longitudinal direction aligned with the longitudinal direction X of the diaper 1 in the unfolded and stretched state, and is disposed at the center of the exterior body 3 in the lateral direction Y. The exterior body is covered with an adhesive (not shown). 3 is joined. The outer package 3 forms the outer shape of the diaper 1 in the unfolded and extended state of the diaper 1 as shown in FIGS. The outer periphery of the exterior body 3 forms the outline of the diaper 1 in that state. The “expanded and extended state” of the diaper 1 means that the diaper 1 is separated by the side seal portion S to be in the expanded state, and the expanded diaper 1 is stretched by the elastic member of each part to design dimensions (the influence of the elastic member is not at all). It means a state where it is expanded until it becomes the same size as when it is expanded in a flat state in the excluded state.

  As shown in FIG. 4, the absorbent main body 2 includes a liquid-permeable surface sheet 21 that forms a skin-facing surface, and a liquid-impermeable or liquid-permeable or water-repellent back sheet 22 that forms a non-skin-facing surface. And a liquid-retaining absorbent 23 disposed between the sheets 21 and 22, and these are integrated by a known joining means such as an adhesive. Each of the topsheet 21 and the backsheet 22 is joined to each other directly or through another member (for example, a side cuff 24 described later) at an extending portion extending outward from the periphery of the absorber 23. The absorber 23 is sandwiched and fixed. The absorber 23 is located in the center part of the horizontal direction Y of the diaper 1 (exterior body 3). As the top sheet 21 and the back sheet 22, various types conventionally used for this type of absorbent article can be used without particular limitation. For example, as the surface sheet 21, various nonwoven fabrics, perforated films, and the like can be used. As the back sheet 22, a resin film, a laminate of a resin film and a nonwoven fabric, or the like can be used.

  The absorbent body 23 is formed of an absorbent core 231 formed by holding a water-absorbing polymer particle in an aggregate of fibers such as pulp fibers, and a core wrap sheet 232 such as paper or nonwoven fabric that covers the absorbent core 231. Has been. In the plan view of the absorbent core 231, the central portion in the longitudinal direction X has a shorter length (width) in the lateral direction Y than the front and rear end portions (both ends in the longitudinal direction X), and the central portion in the longitudinal direction X is constricted. It has a flat hourglass shape (dumbbell shape). The absorbent body 23 is formed by integrally covering the entire absorbent core 231 with a core wrap sheet 232. The absorber 23 is formed in a rectangular shape in plan view.

  As shown in FIG. 4, side cuffs 24 made of a liquid-resistant or water-repellent and breathable sheet material 25 are provided on the left and right side portions along the longitudinal direction Y on the skin facing surface of the absorbent main body 2. 24 is provided. In the vicinity of the free end of each side cuff 24, one or more thread-like side cuff elastic members 26 are arranged in an extended state. The side cuffs 24 stand up at least at the crotch portion 1B when the side cuff elastic members 26 arranged in the stretched state contract in the wearing state of the diaper 1, and prevent the liquid from flowing out to the side.

  As shown in FIG. 2, the exterior body 3 has a pair of leg edge portions LS and LS whose both side edges along the longitudinal direction X are curved in an inward arc shape in the crotch portion 1B. When viewed from above, the central region in the vertical direction X has an hourglass shape that is bound inward in the horizontal direction Y. In the crotch 1B, there is a portion of the exterior body 3 that has the shortest length in the lateral direction Y. The exterior body 3 has both side edges FS, FS along the longitudinal direction X in the front body F (abdominal side 1A) and both side edges RS, RS along the longitudinal direction X in the back body R (back side 1C). Are joined together by a known joining means such as an adhesive, heat seal, ultrasonic seal, etc., and as a result of the joining, as shown in FIG. 1, a pair of side seal portions S, S are formed on the diaper 1. A waist opening WH and a pair of leg openings LH, LH are formed.

  As shown in FIGS. 2 and 3, the exterior body 3 includes an outer layer sheet 31 and an inner layer sheet 32. In the wearing state of the diaper 1, the outer layer sheet 31 is located on the side relatively far from the wearer's body and forms a non-skin facing surface (outer surface) of the diaper 1. The inner layer sheet 32 is located on a side relatively close to the wearer's body and forms a skin facing surface (inner surface) of the diaper 1. Between the outer layer sheet 31 and the inner layer sheet 32, the opposing surfaces of both are joined by an adhesive (not shown).

  As shown in FIG. 3, the outer layer sheet 31 is configured by combining a plurality of sheets. Specifically, the outer layer sheet 31 is located between the sheets 31A and 31C and the crotch part 1B between the sheets 31A and 31C, the ventral outer layer sheet 31A constituting the ventral part 1A, the dorsal outer layer sheet 31C constituting the dorsal part 1C. And the crotch outer layer sheet 31B. The sheets 31A, 31B, 31C constituting the outer layer sheet 31 are overlapped with each other in the longitudinal direction X, and are joined and integrated with each other by an adhesive (not shown) at the overlapped portion. As a joining means, in addition to the adhesive, for example, heat sealing, high frequency sealing, ultrasonic sealing or the like may be employed. In the overlapping portion of the sheets 31A and 31C and the sheet 31B, the sheet 31B located in the center of the longitudinal direction X is located on the side relatively close to the absorbent main body 2, and both ends of the sheet 31B in the longitudinal direction X The non-skin facing surface of the part is covered with sheets 31A and 31C.

  The exterior body 3 is a leg elastic member that forms leg gathers at the opening edge of each of the pair of leg openings LH, LH, and is one or a plurality (in the present embodiment, a plurality of legs arranged in an extended state on the front body F). Book) front leg elastic member 35 and one or plural (in this embodiment, plural) rear leg elastic members 36 arranged in the stretched state on the back body R. Each of the leg elastic members 35 and 36 is thread-like or belt-like, and is sandwiched and fixed by an adhesive between the outer layer sheet 31 and the inner layer sheet 32 constituting the exterior body 3.

  As shown in FIG. 2, the front leg elastic member 35 has leg openings from both side edges FS and FS (side seal portions S) of the exterior body 3 constituting the abdomen side portion 1 </ b> A (the waistline portion) of the front body F. It extends inward in the longitudinal direction X and inward in the lateral direction Y along the leg edge LS, which is the opening edge of the LH, and reaches the side edge 2S along the longitudinal direction X of the absorbent main body 2 to form an absorbent body (FIG. (Not shown). That is, the end of the front leg elastic member 35 opposite to the side edge portion FS side is positioned in the absorber arrangement region.

  As shown in FIG. 2, the rear leg elastic member 36 has leg openings from both side edges RS and RS (side seal portions S) of the exterior body 3 constituting the back side portion 1 </ b> C (the waistline portion) of the back body R. It extends inward in the longitudinal direction X and inward in the lateral direction Y along the leg edge LS which is the opening edge of the portion LH, reaches the side edge 2S along the longitudinal direction X of the absorbent main body 2, and absorbs the absorbent body ( (Not shown). That is, the end of the rear leg elastic member 36 on the side opposite to the side edge portion RS is located in the absorber arrangement region.

  One inner layer sheet 32 constituting the outer package 3 is arranged so as to face the outer layer sheet 31. The inner layer sheet 32 covers the entire area of the non-skin facing surface of the absorbent main body 2 and extends outward in the longitudinal direction X beyond the edge 2 a of the absorbent main body 2. Thus, the inner layer sheet 32 extends in the longitudinal direction X from the front body F to the rear body R. However, the length of the inner layer sheet 32 is shorter than the length of the outer layer sheet 31, and the end edges 32a and 32a of the inner layer sheet 32 positioned before and after the longitudinal direction X are longer than the opening edge WH1 of the waist opening WH. It terminates at a position inward in the direction X.

  As the inner layer sheet 32, nonwoven fabrics produced by various manufacturing methods are preferably used. Examples of such a nonwoven fabric include a spunbond nonwoven fabric, an air-through nonwoven fabric, a spunlace nonwoven fabric, and a needle punched nonwoven fabric. Examples of the constituent fibers of the nonwoven fabric include fibers made of polyester such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), polyamide, and the like. The fibers constituting the nonwoven fabric may be short fibers or long fibers, and may be hydrophilic or water repellent. Moreover, a core-sheath type or side-by-side type composite fiber, a split fiber, a modified cross-section fiber, a crimped fiber, a heat-shrinkable fiber, or the like can also be used. These fibers can be used alone or in combination of two or more.

  As shown in FIGS. 2 and 3, in the diaper 1, sweat absorbing sheets 33 capable of absorbing sweat are disposed on the skin-facing surfaces of the waist portions of the front body F and the back body R, respectively. The sweat-absorbent sheet 33 has a rectangular shape in plan view, and has a pair of side edges 33a and 33b extending in the vertical direction X and a pair of end edges 33c and 33d extending in the horizontal direction. The side regions 33a 'and 33b' including each side edge are located in the side seal portion S (FS, RS). Of the pair of end edges 33 c and 33 d, the end edge 33 d located closer to the inside in the longitudinal direction X is located closer to the inside in the longitudinal direction X than the end edge 2 a of the absorbent main body 2. In the following description, of the pair of end edges 33c and 33d, the end edge 33d positioned inward in the vertical direction X is referred to as “inward end edge 33d” and is positioned inward in the vertical direction X. The edge 33c to be performed is referred to as an “outer edge 33c”. An inner end region 33 d ′ extending in the lateral direction Y including the inner end edge 33 d of the sweat absorbing sheet 33 covers the absorbent main body 2. The sweat-absorbing sheet 33 extends from the position of the inner end edge 33d to the outside in the longitudinal direction X beyond the end edge 2a of the absorbent main body 2. Here, the “side area” refers to an area from the side edge to 15 mm, and the “end area” refers to an area from the edge to 15 mm.

  The sweat-absorbing sheet 33 has a structure in which an elastic member 333 is disposed between two fiber sheets 331 and 332 and can expand and contract in the lateral direction Y. Of the two fiber sheets 331 and 332, the fiber sheet 331 located on the side relatively close to the wearer's body is referred to as a first sheet 331, and is located on the side far from the wearer's body. The fiber sheet 332 is referred to as a second sheet 332. The first sheet 331 and the second sheet 332 have the same shape in plan view.

  A plurality of thread-like elastic members 333 are arranged between the first sheet 331 and the second sheet 332. The elastic member 333 is joined to both sheets 331 and 332 in an extended state so as to extend in the lateral direction Y. With this configuration, the sweat-absorbing sheet 33 is extensible in the lateral direction. In a state where the sweat-absorbing sheet 33 is disposed in the waist portions of the front body F and the back body R, a part of the plurality of elastic members 333 constituting the sweat-absorbing sheet 33 crosses the absorbent main body 2. Be placed.

  The sweat-absorbing sheet 33 is preferably hydrophilic because it can absorb sweat. For this purpose, the first sheet 331 and the second sheet 332 constituting the sweat absorbing sheet 33 are preferably hydrophilic sheets. As the hydrophilic sheet, paper or nonwoven fabric containing hydrophilic fibers such as pulp, rayon, or cotton can be used. In addition to hydrophilic fibers, the hydrophilic sheet may be mixed with fibers made of a thermoplastic synthetic resin from the viewpoint of easily forming a film by heat sealing. When hydrophobic fibers are used as the constituent fibers of the first sheet 331 and the second sheet 332, the hydrophobic fibers may be hydrophilized with a hydrophilizing agent.

  The sweat-absorbing sheet 33 has hydrophilicity means that, among the first sheet 331 and the second sheet 332 constituting the sweat-absorbing sheet 33, at least the first sheet positioned on the side relatively close to the wearer's body. The contact angle with respect to the water of the constituent fiber 331 is 90 degrees or less. Preferably, in addition to the first sheet 331, the contact angle of the constituent fibers of the second sheet 332 with respect to water is preferably equal to or less than the above value. The contact angle is measured by the following method.

  As a measuring device, an automatic contact angle meter MCA-J manufactured by Kyowa Interface Science Co., Ltd. is used. Distilled water is used for contact angle measurement. The amount of liquid discharged from an ink jet type water droplet discharge part (manufactured by Cluster Technology, Inc., pulse injector CTC-25 having a discharge part pore diameter of 25 μm) is set to 20 picoliters, and a water drop is dropped directly above the fiber. The state of dripping is recorded on a high-speed recording device connected to a horizontally installed camera. The recording device is preferably a personal computer incorporating a high-speed capture device from the viewpoint of image analysis or image analysis later. In this measurement, an image is recorded every 17 msec. In the recorded video, the first image of water droplets on the fiber is attached to the attached software FAMAS (software version is 2.6.2, analysis method is droplet method, analysis method is θ / 2 method, image processing algorithm Is non-reflective, the image processing image mode is frame, the threshold level is 200, and the curvature is not corrected). Image analysis is performed to calculate the angle between the surface of the water droplet that touches the air and the fiber, and the contact angle And In addition, the sample for measurement (fiber obtained by taking out from the fiber sheet) is collected from the first sheet 331 and the second sheet 332 at a fiber length of 1 mm, and the fiber is placed on the sample table of the contact angle meter and kept horizontal. Then, the contact angle is measured at two different positions for each fiber. In each of the above-mentioned parts, N = 5 contact angles are measured to one decimal place, and a total of 10 measured values (rounded to the second decimal place) is calculated as the contact angle at each part. Define.

  When the hydrophilicity of the first sheet 331 and the second sheet 332 is compared, it is preferable that the hydrophilicity of the first sheet 331 is lower than the hydrophilicity of the second fiber sheet 332. When the hydrophilicity is evaluated by the contact angle, the contact angle of the constituent fibers of the first sheet 331 is preferably larger than the contact angle of the constituent fibers of the second fiber sheet 332. By making the hydrophilicity of the two sheets 331 and 332 different in this way, the sweat absorbed by the sweat absorbing sheet 33 is transferred from the first sheet 331 to the second sheet 332 and efficiently discharged to the outside. Become. From this viewpoint, the difference in the contact angle between the first sheet 331 and the second sheet 332 is preferably 10 degrees or more, particularly preferably 20 degrees or more, and preferably 80 degrees or less, particularly preferably 60 degrees or less. Specifically, the difference in contact angle between the first sheet 331 and the second sheet 332 is preferably 10 degrees or more and 80 degrees or less, and particularly preferably 20 degrees or more and 60 degrees or less.

  The contact angle of the first sheet 331 itself is preferably 10 degrees or more, particularly preferably 20 degrees or more, and is preferably 90 degrees or less, particularly preferably 80 degrees or less. Specifically, the contact angle of the first sheet 331 is preferably 10 degrees or greater and 90 degrees or less, and particularly preferably 20 degrees or greater and 80 degrees or less. On the other hand, on the condition that the contact angle of the second sheet 332 itself is smaller than the contact angle of the first sheet 331, it is preferably 0 degree or more, particularly preferably 10 degrees or more, and 80 degrees or less, particularly 60 degrees or less. Preferably there is. Specifically, the contact angle of the second sheet 332 is preferably not less than 0 degrees and not more than 80 degrees, particularly preferably not less than 10 degrees and not more than 60 degrees.

  As shown in FIGS. 2 and 3, the ventral outer layer sheet 31 </ b> A has a ventral extension part 31 </ b> AE that extends outward in the longitudinal direction X from the end edge 32 a in the longitudinal direction X of the inner layer sheet 32. ing. The back side outer layer sheet 31 </ b> C has a back side extending portion 31 </ b> CE extending outward in the vertical direction X from the end edge 32 a in the vertical direction X of the inner layer sheet 32. Both extended portions 31AE and 31CE are folded back toward the inner layer sheet 32 at the position of the opening edge WH1 of the waist opening WH so as to cover the outer end region 33c 'of the sweat absorbing sheet 33, respectively. A waist elastic member (not shown) extending in the lateral direction Y may be arranged and fixed in an extended state inside the folded-back extension portions 31AE, 31CE.

  The folded-back extension portions 31AE and 31CE extend inward in the longitudinal direction X beyond the outer edge 33c of the sweat absorbing sheet 33. As a result, the outer end region 33c 'extending in the lateral direction Y including the outer end edge 33c of the sweat-absorbing sheet 33 is covered with the extending portions 31AE, 31CE. An adhesive H1 is applied to the region where each of the extending portions 31AE, 31CE and the outer end region 33c 'overlap, and the two are joined. In FIG. 5, this junction area is highlighted in a dark color. Further, in the outer end region 33c ′ of the sweat absorbing sheet 33, as shown in FIG. 3, the adhesive H2 is applied to the surface facing the outer layer sheets 31A, 31C, thereby the outer layer sheets 31A, 31C and The outer end region 33c ′ is joined.

  As shown in FIGS. 2 and 5, the sweat-absorbent sheet 33 has other side members 33 a ′ and 33 b ′ including the side edges 33 a and 33 b in the side seal portions S and S (FS and RS). Specifically, it is joined to the exterior body 3. In FIG. 5, the junction area between the side areas 33 a ′ and 33 b ′ and the exterior body 3 is highlighted with a dark color.

  As shown in FIG. 3, each sweat absorbing sheet 33 is directly opposed to the outer layer sheet 31 in at least a part of the region. Specifically, in the front body F, at least a part of the sweat-absorbing sheet 33 directly faces the ventral outer layer sheet 31A. Even in the back side portion R, at least a part of the region of the sweat absorbing sheet 33 directly faces the back side outer layer sheet 31C. The regions where the sweat-absorbing sheet 33 and the outer layer sheets 31A and 31C directly face each other are the extended portions 31AE and 31CE 'of the outer layer sheets 31A and 31C and the end portions of the inner layer sheet 32. It is an area | region between 32a. In this region, the sweat-absorbing sheet 33 and other members, specifically, the outer layer sheets 31A and 31C are not joined.

  As described above, in the sweat absorbing sheet 33, the side regions 33a 'and 33b' are joined to the exterior body, which is another member, in the side seal portions S and S. Along with this, the outer end region 33c 'of the sweat absorbing sheet 33 is joined to the extending portions 31AE and 31CE which are other members. However, in the sweat absorbing sheet 33, an end region including the inner end edge 33d located inward in the longitudinal direction X is a non-joined portion that is not joined to another member. Moreover, the site | part which the sweat absorbing sheet 33 and each outer-layer sheet | seat 31A, 31C directly oppose is a non-joining state. From the above, the region where the sweat-absorbent sheet 33 is bonded to other members is only the region highlighted in the dark color shown in FIG. In other words, the sweat-absorbing sheet 33 is joined to other members only in the side regions 33a 'and 33b' and the outer end region 33c ', and the other regions are not joined. As a result, as shown in FIG. 3, the diaper 1 is defined by the sweat absorbing sheet 33 and the ventral outer layer sheet 31 </ b> A, and the sweat absorbing sheet 33 and the dorsal outer layer sheet 31 </ b> C, and before and after the longitudinal direction X of the absorbent main body 2. A pocket portion P opening in the end region is formed.

  According to the diaper 1 having the above configuration, since the sweat absorbing sheet 33 is joined to other members only in a necessary minimum region, shearing generated by the contraction of the sweat absorbing sheet 33 is transferred to the outer layer sheets 31A and 31C. It becomes difficult to be done. Therefore, since the diaper 1 exhibits a clean appearance at the arrangement site of the respective outer layer sheets 31A and 31C, it is possible to provide an excellent appearance when worn. In particular, as will be described later, when each outer layer sheet 31A, 31C has elasticity, each outer layer sheet 31A, 31C unintentionally floats from the composite elastic sheet 34 when the composite elastic sheet 34 contracts. The inconvenience that it ends up hardly occurs. Also by this, the diaper 1 exhibits a clean appearance.

  According to the diaper 1 having the above configuration, since the sweat absorbing sheet 33 has elasticity along the lateral direction Y, the sweat absorbing sheet 33 easily fits the wearer's body, and from the wearer's skin. It can absorb sweat efficiently. In addition, the slippery sheet 33 having stretchability effectively prevents the diaper 1 from being worn off. In particular, the sweat absorbing sheet 33 and the outer layer sheets 31A and 31C directly face each other are in a non-bonded state, so that the sweat absorbing sheet 33 does not depend on the state of the outer layer sheets 31A and 31C. Will properly contact the wearer's skin. As described above, the diaper 1 of the present embodiment has a sweat absorbability, an excellent appearance in a worn state, and a good wearing feeling. Furthermore, the above-mentioned pocket part P is formed in the diaper 1, and this pocket part P acts as a weir when the excreted liquid flows along the vertical direction X, and from the edge of the vertical direction X. Effectively prevents leakage. Furthermore, since sweat is evaporated in the space formed by the pocket portion P, it is difficult to cause stuffiness.

  In the present embodiment, it is preferable that the ventral outer layer sheet 31 </ b> A and the back outer layer sheet 31 </ b> C constituting the outer layer sheet 31 have elasticity in at least the lateral direction Y. On the other hand, the crotch outer layer sheet 31 </ b> B and the inner layer sheet 32, which are the remaining portions of the outer layer sheet 31, have no stretchability and are not stretchable. Therefore, in the exterior body 3, the region including the sheets 31A and 31C has stretchability in the lateral direction Y, and the region not including the sheets 31A and 31C does not have stretchability in the lateral direction Y. In the present embodiment, the abdominal side portion 1A that is the waist portion of the front body F includes the abdominal outer layer sheet 31A, and the back side portion 1C that is the waist portion of the back body R includes the back side outer layer sheet 31C. Both the side portion 1A and the back side portion 1C have elasticity in the lateral direction Y. Further, in the present embodiment, the ventral outer layer sheet 31A has a boundary between the ventral portion 1A and the crotch 1B, that is, the lower ends of the pair of side seal portions S, S in the front body F (inward in the longitudinal direction X). The rear outer layer sheet 3C extends beyond the imaginary straight line extending in the lateral direction Y through the side end), and the back side outer layer sheet 3C is at the boundary between the back side 1C and the crotch 1B, that is, at the back body R. Since it extends to the crotch part 1B through the lower end (the end part on the inner side in the vertical direction X) of each of the pair of side seal parts S and beyond the virtual straight line extending in the horizontal direction Y, the crotch part 1B The portions including the extending portions of both the seats 31A and 31C, that is, the portions near the abdominal side portion 1A and the back side portion 1C in the crotch portion 1B also have elasticity in the lateral direction Y, respectively. On the other hand, the portions other than those near the ventral side 1A and the back side 1C in the crotch part 1B (the central part in the vertical direction X of the crotch part 1B) do not have elasticity in the horizontal direction Y.

  The fact that the sheet is not substantially stretchable in a certain direction means that the sheet hardly stretches even when a force for pulling in the certain direction is applied to the sheet. For example, when a sample having a length of 15 × width of 5 cm is pulled in a longitudinal direction by a material tensile tester such as Tensilon and the breaking elongation when the sample breaks is 10% or less, The sample is not substantially stretchable in the longitudinal direction. The elongation at break can be calculated by (the sample length at break-the original length of the sample) / (the original length of the sample) × 100.

  As described above, the ventral outer layer sheet 31 </ b> A and the back outer layer sheet 31 </ b> C preferably have stretchability in at least the lateral direction Y. FIG. 6 shows an example of a stretchable ventral outer layer sheet 31A. The ventral outer layer sheet 31A shown in FIG. 6 has a configuration in which a thread-like elastic filament is bonded to one surface of an extensible fiber layer mainly composed of inelastic fibers, and two fiber sheets 41 as the fiber layers. , 42 and an elastic member 43 as an elastic filament disposed between both sheets 41, 42. The stretchable backside outer layer sheet 31C can also be configured in the same manner as the stretchable ventral side outer layer sheet 31A shown in FIG. In FIG. 6, an elastic film can be used instead of the thread-like elastic filament. In particular, the ventral outer layer sheet 31 </ b> A and the back outer layer sheet 31 </ b> C are preferably made of a stretchable sheet in which a strand or a film made of an elastomer resin is arranged and fixed in a non-stretched state between two stretchable nonwoven fabrics.

  Stretchable means (a) when the constituent fibers of the two non-woven fabrics are stretched, and (b) even if the constituent fibers themselves are not stretched, the fibers that are joined at the intersection are separated, This includes a case where the three-dimensional structure formed by a plurality of fibers is structurally changed due to bonding or the like, or the constituent fibers are broken and the two nonwoven fabrics are elongated as a whole.

  The elastic member 43 constituting the ventral outer layer sheet 31A is an elastic filament formed by being stretched in a state where the elastic resin is melted or softened. Each of the plurality of elastic members 43 is substantially continuous over the entire length of the sheet 31 </ b> A (the total length in the lateral direction Y of the exterior body 3). The plurality of elastic members 43 are arranged so as to extend in one direction (lateral direction Y) without crossing each other. The elastic member 43 is joined to the two sheets 41 and 42 in a substantially non-extended state. The elastic member 43 and the sheets 41 and 42 in the ventral outer layer sheet 31 </ b> A are bonded to the elastic member 43 in a state where fibers (non-elastic fibers) constituting the sheets 41 and 42 are buried in the elastic member 43. It is preferable that it is made by this, and it is preferable that it is not made using adhesives, such as a hot-melt-type adhesive agent. Therefore, it is preferable that no adhesive is present between the sheets 41 and 42 (extensible fiber layer mainly composed of non-elastic fibers) and the elastic member 43 bonded thereto.

  The ventral outer layer sheet 31A can be expanded and contracted in the same direction as the direction in which the elastic member 43 extends (lateral direction Y). The stretchability of the sheet 31 </ b> A appears due to the elasticity of the elastic member 43. When the sheet 31A is stretched in the same direction as the direction in which the elastic member 43 extends, the elastic member 43 and the sheets 41 and 42 expand. When the stretching of the sheet 31A is released, the elastic member 43 contracts, and the sheets 41 and 42 return to the state before the stretching with the contraction. Further, in the sheet 31A, there is no other elastic member coupled in a state orthogonal to the elastic member 43, and therefore the sheet 31A is stretched in the same direction as the direction in which the elastic member 43 extends (lateral direction Y). When this occurs, the sheet 31 </ b> A contracts in the transverse direction Y, and expands with little so-called width contraction.

  Each of the two sheets 41 and 42 constituting the ventral outer layer sheet 31A can be a nonwoven fabric of short fibers. Examples of the nonwoven fabric include air-through nonwoven fabric, heat roll nonwoven fabric, spunlace nonwoven fabric, spunbond nonwoven fabric, and meltblown nonwoven fabric. The sheet 41 and the sheet 42 may be the same type or different types. As used herein, “same kind of sheet” means sheets having the same manufacturing process, the type of constituent fibers of the sheet, the fiber diameter and length of the constituent fibers, the thickness and basis weight of the sheets, etc. . When at least one of these is different, it is a “heterogeneous sheet”.

  The elastic member 43 (elastic filament) constituting the ventral outer layer sheet 31A is made of, for example, a thermoplastic elastomer or rubber. In particular, when thermoplastic elastomer is used as a raw material, melt spinning using an extruder is possible in the same way as ordinary thermoplastic resins, and the elastic filament thus obtained is easy to heat-seal. Suitable for the outer layer sheet 31A. Examples of the thermoplastic elastomer include styrenes such as SBS (styrene-butadiene-styrene), SIS (styrene-isoprene-styrene), SEBS (styrene-ethylene-butadiene-styrene), and SEPS (styrene-ethylene-propylene-styrene). Examples include elastomers, olefinic elastomers (ethylene-based α-olefin elastomers, propylene-based elastomers copolymerized with ethylene / butene / octene, etc.), polyester-based elastomers, polyurethane-based elastomers, and the like. These thermoplastic elastomers can be used singly or in combination of two or more. A core-sheath type or side-by-side type composite fiber made of these thermoplastic elastomers can also be used.

  The above-described ventral outer layer sheet 31A and back outer layer sheet 31C having elasticity can be manufactured, for example, according to the method described in JP-A-2009-61743. Specifically, a molten elastomer resin is supplied between two nonwoven fabrics in a strand shape or a sheet shape, and these are integrated to form a composite sheet material, and the composite sheet material is placed between a pair of tooth gap rolls. It can be obtained by being bitten and stretched in the same direction as the supply direction of the elastomer resin. This tooth groove roll alternately has teeth and grooves extending in the axial direction of the roll in the rotation direction of the roll.

  The above is the description of the stretchable ventral and back side outer layer sheets 31A and 31E. The same description is applied to the sweat absorbing sheet 33 which is also a stretchable sheet. That is, as described above, the sweat-absorbent sheet 33 is obtained by supplying molten elastomer resin as an elastic member in a strand shape or a sheet shape between two nonwoven fabrics 331 and 332 as fiber sheets and integrating them. It is preferable that More preferably, the sweat-absorbent sheet 33 supplies a melted elastomer resin in the form of a strand or a sheet between two nonwoven fabrics 331 and 332, and integrates them to form a composite sheet material. It is obtained by being bitten between a pair of tooth space rolls and extending in the same direction as the elastomer resin supply direction.

  In addition to the sweat-absorbing sheet 33 having the above-described form, as described above, a composite elastic sheet in which a thread-like elastic member 333 is disposed and fixed in an extended state between two fiber sheets 331 and 332 made of a nonwoven fabric can be used. . Whatever the form of the sweat-absorbing sheet 33, the sweat-absorbing sheet 33 has a corrugated cross section in the thickness direction Z when viewed along the lateral direction Y, as shown in FIG. It is preferable that the top 334 of the corrugated shape on the surface facing the wearer's skin be able to contact the wearer's skin in the contracted state of the sweat absorbing sheet 33. The sweat-absorbing sheet 33 having such a shape can reduce the sticky feeling caused by the close contact between the sweat-absorbing sheet 33 and the skin of the wearer.

  The corrugated shape described above can be shaped by forming a plurality of embossed point rows extending in the vertical direction X at intervals in the horizontal direction on the sweat absorbing sheet 33, for example. Alternatively, it can also be formed by corrugating by inserting a sweat absorbing sheet 33 between a pair of tooth groove rolls that alternately have teeth and grooves extending in the axial direction of the roll in the rotation direction of the roll and mesh with each other. Is possible. In any case, there is an advantage in that the waveform shaping forms a gradient of fiber density in the sweat-absorbent sheet 33 and vapor is easily released to the outside through a portion having a low fiber density. In addition, the absorbed sweat is easily moved by the capillary force from the low fiber density portion to the high fiber density portion, so that there is an advantage that the absorption of the liquid is promoted.

  As the 1st sheet | seat 331 and the 2nd sheet | seat 332 which comprise the sweat absorbing sheet 33, it is preferable to use the nonwoven fabric comprised from various fibers. Each sheet 331,332 may be comprised from the single layer nonwoven fabric, or may be comprised from the multilayer nonwoven fabric. In particular, when the second sheet 332 located on the side relatively far from the wearer's body among the two sheets 331 and 332 constituting the sweat-absorbing sheet 33 has a meltblown layer, the distance between the fibers is short. It is preferable because the absorbed sweat can be released to the outside more efficiently by the action of the melt blown layer in which high capillary force is likely to occur. Examples of the sheet having a meltblown layer include a spunbond-meltblown (SM) nonwoven fabric and a spunbond-meltblown-spunbond (SMS) nonwoven fabric in addition to the meltblown nonwoven fabric itself.

  As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment. For example, in the above-described embodiment, the sweat absorbing sheet 33 is disposed on both the front body F and the back body R, but instead, the sweat absorbing sheet 33 may be disposed only on the back body R.

In the embodiment, the outer layer sheet 31 is configured by combining a plurality of sheets 31A, 31B, and 31C. Alternatively, the outer layer sheet may be configured by a single continuous sheet. Good. This one continuous sheet may not have elasticity. In addition, it is not essential for the sheets 31A and 31B in the embodiment to be stretchable.
Moreover, the exterior body 3 is divided | segmented into the exterior body ventral region located in a ventral side part, and the exterior body back side area | region located in a back side part, The absorptive main body 2 is the said exterior body ventral region, It may be bridged and fixed to the exterior body back side field.

  Moreover, although the said embodiment applies the pants-type disposable diaper to the disposable wearing article of this invention, this invention is applied to absorbent articles, such as other wearing articles, for example, a tape-type disposable diaper, etc. May be.

This invention discloses the following disposable wearing articles further regarding embodiment mentioned above.
<1>
An absorbent main body having a longitudinal direction corresponding to the front-rear direction of the wearer and a lateral direction perpendicular thereto, and having a liquid-retaining absorbent, and disposed on the non-skin facing surface side of the absorbent main body And a pair of side seal portions, a waist opening portion, and a pair of leg opening portions that are joined to each other along the longitudinal direction of the exterior body in each of the front body and the back body. Is a disposable wearing article formed,
The exterior body includes an outer layer sheet positioned on a side relatively far from the wearer's body, and an inner layer sheet positioned on a side relatively closer to the wearer's body,
A sweat-absorbing sheet capable of absorbing sweat is disposed on the skin-facing surface of at least the waist part of at least the back body of the front body and the back body,
The sweat absorbing sheet has at least a part of the region directly facing the outer layer sheet,
The sweat-absorbing sheet has a structure in which an elastic member is disposed between two fiber sheets, and is capable of expanding and contracting in the lateral direction.
The sweat absorbing sheet has a pair of side edges extending in the vertical direction and a pair of end edges extending in the horizontal direction, and each side region including each side edge is joined to another member in the side seal portion. The outer end region including the end edge located on the outer side in the vertical direction is joined to another member, and the inner end region including the end edge located on the inner side in the vertical direction is A disposable wearing article that is a non-joined part that is not joined to another member.

<2>
The sweat absorbent sheet has a corrugated cross section in the thickness direction when viewed along the lateral direction, and the top of the corrugated shape on the surface side facing the wearer's skin is in the contracted state of the sweat absorbent sheet. The disposable wearing article according to <1>, wherein the article can be brought into contact with the skin of the wearer.
<3>
A plurality of rows of embossed points extending in the vertical direction are formed on the sweat absorbing sheet in the horizontal direction at intervals, whereby the sweat absorbing sheet has a wavy shape in cross section in the thickness direction when viewed along the horizontal direction. The disposable wearing article according to the above <2>.
<4>
Of the two fiber sheets constituting the sweat-absorbing sheet, the fiber sheet located on the side relatively closer to the wearer's body is located on the side relatively closer to the wearer's body. The disposable wearing article according to any one of the above items <1> to <3>, which is lower than the hydrophilicity.
<5>
<1> thru | or the contact angle with respect to the water of the structure fiber of the 1st sheet | seat located in the side close | similar to a wearer's body among the two said fiber sheets which comprise the said sweat absorbing sheet is 90 degrees or less. The disposable wearing article according to any one of <4>.
<6>
Of the two fiber sheets constituting the sweat-absorbing sheet, a first sheet located on the side relatively closer to the wearer's body, and a second sheet located on the side relatively far from the wearer's body, The contact angle difference is 10 degrees or more, preferably 20 degrees or more, preferably 80 degrees or less, particularly preferably 60 degrees or less, and the contact angle difference between the first sheet and the second sheet is The disposable wearing article according to any one of <1> to <5>, preferably 10 degrees to 80 degrees, particularly preferably 20 degrees to 60 degrees.

<7>
Of the two fiber sheets constituting the sweat-absorbent sheet, the contact angle of the first sheet located on the side relatively close to the wearer's body is preferably 10 degrees or more, particularly preferably 20 degrees or more, 90 degrees or less, particularly preferably 80 degrees or less, and the contact angle of the first sheet is preferably 10 degrees or more and 90 degrees or less, particularly preferably 20 degrees or more and 80 degrees or less. The disposable wearing article according to any one of the above.
<8>
The contact angle of the 2nd sheet | seat located in the side relatively far from a wearer's body among the two said fiber sheets which comprise the said sweat absorption sheet | seat is located in the side relatively close to a wearer's body. On the condition that it is smaller than the contact angle of one sheet, it is preferably 0 ° or more, particularly preferably 10 ° or more, preferably 80 ° or less, particularly preferably 60 ° or less, and the contact angle of the second sheet is 0 The disposable wearing article according to any one of the above items <1> to <7>, which is preferably from 80 degrees to 80 degrees, particularly preferably from 10 degrees to 60 degrees.
<9>
The elastic member in the sweat absorbing sheet is an elastomer resin, and the fiber sheet is a non-woven fabric,
Any one of <1> to <8>, wherein the sweat absorbing sheet is obtained by supplying the melted elastomer resin in a strand shape or a sheet shape between the two nonwoven fabrics, and integrating them. The disposable wearing article according to 1.
<10>
The sweat absorbing sheet supplies the melted elastomer resin in a strand or sheet between two nonwoven fabrics, and integrates them to form a composite sheet material. The composite sheet material is placed between a pair of tooth gap rolls. The disposable wearing article according to <9>, wherein the article is obtained by being bitten and stretched in the same direction as the elastomer resin supply direction.
<11>
Any one of the items <1> to <10>, wherein the fiber sheet located on a side relatively far from the wearer's body among the two fiber sheets constituting the sweat-absorbing sheet has a meltblown layer. The disposable wearing article according to 1.

<12>
The disposable wearing article according to any one of <1> to <11>, wherein the inner end area of the sweat-absorbing sheet covers the absorbent main body.
<13>
The disposable wearing article according to any one of <1> to <12>, wherein the sweat-absorbing sheets are respectively disposed on the skin-facing surfaces of the waist portion of the front body and the back body.
<14>
<1> to <13>, wherein the inner layer sheet covers the whole area of the non-skin facing surface of the absorbent main body and extends outward in the longitudinal direction beyond the edge of the absorbent main body. The disposable wearing article according to any one of the above.
<15>
The outer layer sheet has an extending portion that extends outward in the vertical direction from the vertical edge of the inner layer sheet,
<1> to <14>, wherein the extending portion is folded back to the inner layer sheet side at a position of an opening edge of the waist opening so as to cover the outer end region of the sweat absorbing sheet. The disposable wearing article according to any one of the above.
<16>
<1> to <15> in which the outer end region is joined to the outer layer sheet in a region where the extension portion of the outer layer sheet overlaps the outer end region of the sweat absorbing sheet. The disposable wearing article according to any one of the above.

<17>
Any one of <1> to <16>, wherein the sweat-absorbent sheet is directly opposed to the outer layer sheet in a region between the end of the extended portion of the outer layer sheet and the end of the inner layer sheet. The disposable wearing article according to claim 1.
<18>
In the region between the end of the extended portion of the outer layer sheet and the end of the inner layer sheet, the sweat absorbing sheet is a non-joined portion that is not joined to another member. Thru | or <17> any one of disposable wearing articles.
<19>
The disposable wearing article according to any one of <1> to <18>, wherein the side region of the sweat absorbing sheet is joined to the outer layer sheet at the side seal portion.
<20>
The sweat-absorbing sheet is joined to other members only in the both side regions and the outer end region, and the other regions are in a non-joined state. The sweat-absorbing sheet and the outer-layer sheet The disposable wearing article according to any one of <1> to <19>, wherein a pocket portion that is formed and has an opening in an end region in a longitudinal direction of the absorbent main body is formed.
<21>
The outer layer sheet is positioned between the two sheets to form a crotch portion of the article, the abdominal outer layer sheet constituting the abdominal side part of the article, the back side outer layer sheet constituting the back side part of the article. The disposable wearing article according to any one of the above items <1> to <20>, comprising a crotch outer layer sheet.

<22>
The disposable wearing article according to <21>, wherein the ventral outer layer sheet and the back outer layer sheet have elasticity in a lateral direction.
<23>
The disposable wearing article according to <21> or <22>, wherein the crotch outer layer sheet and the inner layer sheet are not stretchable and are not stretchable.
<24>
The ventral outer layer sheet extends to the crotch part over a virtual straight line extending in a lateral direction through the lower ends of the pair of side seal parts in the front body (
Any one of the items <21> to <23>, wherein the back outer layer sheet extends to the crotch portion beyond a virtual straight line extending in the lateral direction through the lower ends of the pair of side seal portions in the back body. The disposable wearing article according to 1.
<25>
Any one of the above <21> to <24>, wherein the ventral outer layer sheet and the back outer layer sheet have a configuration in which a thread-like elastic filament is bonded to one surface of an extensible fiber layer mainly composed of inelastic fibers. The disposable wearing article according to 1.
<26>
The outer body is a leg elastic member that forms leg gathers at the opening edge of each of the pair of leg openings, and a front leg elastic member arranged in an extended state on the front body, and an extended state on the back body. The disposable wearing article according to any one of <1> to <25>, further comprising a rear leg elastic member arranged.

<27>
The disposable wearing article according to any one of <1> to <26>, wherein the outer layer sheet and the inner layer sheet are not stretchable and are not stretchable.
<28>
<1> The absorbent main body includes a liquid-permeable surface sheet that forms a skin-facing surface, a back sheet that forms a non-skin-facing surface, and a liquid-retaining absorbent that is interposed between both sheets. Thru | or the disposable wearing article of any one of <27>.
<29>
The disposable wearing article according to any one of <1> to <28>, wherein the article is a pants-type or tape-type disposable diaper.

DESCRIPTION OF SYMBOLS 1 Pants type disposable diaper 1A Abdominal side part 1B Crotch part 1C Back side part 2 Absorbent main body 2a Edge 21 Surface sheet 22 Back sheet 23 Absorbent core 24 Side cuff 3 Exterior body 31 Outer layer sheet 31A Abdominal side outer layer sheet 31B Inseam Outer layer sheet 31C Back side outer layer sheet 32 Inner layer sheet 33 Sweat absorbing sheets 33a, 33b Side edge 33c Outer edge 33d Inner edge 33c 'Outer edge region 33d' Inner edge region 331 First sheet 332 Second sheet 333 Elastic member 35 Front leg elastic member 36 Rear leg elastic member X Longitudinal direction Y Horizontal direction F Front body R Rear body

Claims (7)

  1. An absorbent main body having a longitudinal direction corresponding to the front-rear direction of the wearer and a lateral direction perpendicular thereto, and having a liquid-retaining absorbent, and disposed on the non-skin facing surface side of the absorbent main body And a pair of side seal portions, a waist opening portion, and a pair of leg opening portions that are joined to each other along the longitudinal direction of the exterior body in each of the front body and the back body. Is a disposable wearing article formed,
    The exterior body includes an outer layer sheet positioned on a side relatively far from the wearer's body, and an inner layer sheet positioned on a side relatively closer to the wearer's body,
    A sweat-absorbing sheet capable of absorbing sweat is disposed on the skin-facing surface of at least the waist part of at least the back body of the front body and the back body,
    The sweat absorbing sheet has at least a part of the region directly facing the outer layer sheet,
    The sweat-absorbing sheet has a structure in which an elastic member is disposed between two fiber sheets, and is capable of expanding and contracting in the lateral direction.
    The sweat absorbing sheet has a pair of side edges extending in the vertical direction and a pair of end edges extending in the horizontal direction, and each side region including each side edge is joined to another member in the side seal portion. The outer end region including the end edge located on the outer side in the vertical direction is joined to another member, and the inner end region including the end edge located on the inner side in the vertical direction is A disposable wearing article that is a non-joined part that is not joined to another member.
  2.   The sweat absorbent sheet has a corrugated cross section in the thickness direction when viewed along the lateral direction, and the top of the corrugated shape on the surface side facing the wearer's skin is in the contracted state of the sweat absorbent sheet. The disposable wearing article according to claim 1, wherein the disposable wearing article is capable of contacting the wearer's skin.
  3.   A plurality of rows of embossed points extending in the vertical direction are formed on the sweat absorbing sheet in the horizontal direction at intervals, whereby the sweat absorbing sheet has a wavy shape in cross section in the thickness direction when viewed along the horizontal direction. The disposable wearing article according to claim 2.
  4.   Of the two fiber sheets constituting the sweat-absorbing sheet, the fiber sheet located on the side relatively closer to the wearer's body is located on the side relatively closer to the wearer's body. The disposable wearing article according to any one of claims 1 to 3, wherein the article has a lower hydrophilicity.
  5. The elastic member in the sweat absorbing sheet is an elastomer resin, and the fiber sheet is a non-woven fabric,
    5. The sweat absorbing sheet is obtained by supplying the melted elastomer resin in a strand shape or a sheet shape between the two nonwoven fabrics, and integrating them. The disposable wearing article as described.
  6.   The sweat absorbing sheet supplies the melted elastomer resin in a strand or sheet between two nonwoven fabrics, and integrates them to form a composite sheet material. The composite sheet material is placed between a pair of tooth gap rolls. The disposable wearing article according to claim 5, wherein the article is obtained by being bitten and stretched in the same direction as the supply direction of the elastomer resin.
  7.   The fiber sheet located on the side relatively distant from the wearer's body among the two fiber sheets constituting the sweat-absorbing sheet has a meltblown layer according to any one of claims 1 to 6. The disposable wearing article as described.
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WO2018092541A1 (en) * 2016-11-15 2018-05-24 花王株式会社 Absorbent article
WO2018167883A1 (en) * 2017-03-15 2018-09-20 花王株式会社 Layered nonwoven cloth, method for manufacturing same, absorbent article, and sweat-absorbing sheet
WO2018167881A1 (en) 2017-03-15 2018-09-20 花王株式会社 Laminated nonwoven fabric, method for manufacturing same, absorptive article, and sweat absorbing sheet
CN110325679A (en) * 2017-03-15 2019-10-11 花王株式会社 Non-woven fabrics and its manufacturing method and absorbent commodity and absorbing sweat piece is laminated
WO2019130404A1 (en) * 2017-12-25 2019-07-04 花王株式会社 Disposable diaper
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JP3820043B2 (en) * 1998-12-28 2006-09-13 ユニ・チャーム株式会社 Disposable diapers
JP4215370B2 (en) * 2000-03-10 2009-01-28 花王株式会社 Absorbent articles
JP4481899B2 (en) * 2005-07-29 2010-06-16 王子ネピア株式会社 Pants-type disposable diapers
JP4918002B2 (en) * 2007-09-07 2012-04-18 花王株式会社 Elastic sheet and method for producing the same
JP5777271B2 (en) * 2009-03-25 2015-09-09 ユニ・チャーム株式会社 wearing article
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