JP2008194161A - Absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily wear a pull-up type absorbent article. <P>SOLUTION: In the pull-up type absorbent article, an absorber 2 is jointed to the lower ends of a front part 401 and a rear part 403 of an exterior sheet 4 in two second joint areas 62 between the absorber 2 and the exterior sheet 4. Along the lower ends, there are areas where the absorber 2 and the exterior sheet 4 are not in contact on the left and right sides of the second joint area 62. With this structure, the circumferential length of a leg opening can be extended by easily deforming the left or right-side area between the front part 401 and the rear part 403 of the absorber 2, so that legs can be easily inserted into the leg openings. Further, as the absorber is jointed to the exterior sheet 4 along the whole width in two first joint areas 61, the toes inserted from a body opening to wear the absorbent article can be prevented from being caught in the absorber 2. As a result, the absorbent article can be easily worn. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a pants-type absorbent article having a trunk opening at the upper end and a pair of leg openings at the lower end.

  Conventionally, as a disposable diaper that receives excrement from a wearer, a pants type is used. In patent document 1 and patent document 2, the site | part of the both sides of the width direction of the two sheet-like members (a 1st outer sheet | seat and a 2nd outer sheet | seat) fixed to the both ends of the longitudinal direction of an absorptive pad (panel) is used. A pants-type disposable wearing article formed by adhering is disclosed.

  In the wearing article of patent documents 1 and patent documents 2, each outer sheet is provided with a crotch region which covers a part of a wearer's crotch part in the lower part of a waist area, and a waist area which opposes a wearer's waist. The crotch region has a substantially trapezoidal shape with a width that decreases from the waistline region toward the lower side. Then, on both sides in the width direction of the absorbent pad, a pair of leg opening is formed by the edge of the crotch region of the two outer sheets and the edge of the absorbent pad.

  In the wearing articles of Patent Literature 1 and Patent Literature 2, both ends of the absorbent pad in the longitudinal direction and portions overlapping the crotch lower end of each outer sheet are fixed to the outer sheet with an adhesive, and the absorbent pad The other parts of are not fixed to the outer sheet.

In the wearing article of patent document 1, in the site | part to which an absorbent pad and an outer sheet adhere, the adhesion | attachment area | region is provided over the full width of an absorbent pad, and in the wearing article of patent document 2, the width | variety of an absorbent pad is provided. An adhesive region is provided only in the center of the direction. Moreover, in the wearing article of patent document 2, the suspension belt extended to a longitudinal direction is adhering to the top part of a pair of leak-proof flap provided in the both sides of the absorbent pad, and both ends of the suspension belt are absorbent pads. By being fixed to the outer sheet outside the both ends in the longitudinal direction, the leakproof flap is reliably raised.
JP 2003-290284 A JP 2002-336303 A

  By the way, in the wearing article of patent document 1, since the site | part which overlaps with the crotch lower end part of an outer sheet | seat is fixed to the outer sheet | seat over the full width in the absorbent pad, the movement of the absorbent pad in the leg part vicinity is restrict | limited. As a result, the circumference of the leg opening cannot be secured large. For this reason, there is a possibility that the leg cannot be easily inserted into the leg opening when the worn article is mounted, and the worn article cannot be smoothly mounted.

  Moreover, in the wearing article of patent document 2, only the center part of the width direction is fixed to the outer sheet | seat in the both ends of an absorbent pad, and the both ends (namely, corner | angular part of an absorbent pad) are fixed. Not. For this reason, when the wearing article is mounted, the toes inserted from the trunk opening may be caught by the absorbent pad, and the wearing article may not be mounted smoothly.

  This invention is made | formed in view of the said subject, and aims at making mounting | wearing of an absorbent article easy.

  The invention according to claim 1 is a pant-type absorbent article having a trunk opening at the upper end and a pair of leg openings at the lower end, which is in contact with the wearer's abdominal and dorsal skin. A cylindrical exterior sheet having a front part and a rear part, wherein the left and right sides of the front part are joined to the left and right sides of the rear part, respectively, and a lower side of the exterior sheet on the wearer side of the exterior sheet An absorber that is bonded to the front part and the rear part across the opening on the side, protrudes downward from the lower end of the exterior sheet, and absorbs excrement from the wearer facing the crotch part of the wearer And two first joining regions between the outer sheet and the absorbent body, in which both ends in the longitudinal direction of the absorbent body are joined to the front part and the rear part over the entire width in the left-right direction. And a part of the absorber is the front part and Two second joining regions joined to the respective lower end portions of the rear portion, and a state where the left and right side portions of the front portion and the left and right side portions of the rear portion are separated and extended In the above, the exterior sheet and the absorber are not joined on both sides in the left-right direction of each of the two second joining regions.

  Invention of Claim 2 is an absorbent article of Claim 1, Comprising: The width of the said left-right direction of each of the said 2nd joining area | region is 15 of the width of the said left-right direction of the said absorber. % To 60%.

  Invention of Claim 3 is an absorbent article of Claim 1 or 2, Comprising: Each of the said front part and the said back part is substantially rectangular shape.

  Invention of Claim 4 is an absorbent article in any one of Claim 1 thru | or 3, Comprising: It joins to the said exterior sheet along the edge of trunk | drum opening, and shrink | contracts by trunk | drum opening. A body elastic member that forms a gather; and a leg elastic member that is joined and contracted along the opening on the lower side of the exterior sheet to form a leg opening gather. Are provided on the left and right sides of each of the two second joining regions.

  Invention of Claim 5 is an absorbent article in any one of Claim 1 thru | or 4, Comprising: The said 2nd 2nd joining area | region is respectively each of the said 2 1st joining area | region, and the said exterior sheet | seat Between the lower end portions of the upper and lower portions.

  Invention of Claim 6 is an absorbent article of Claim 5, Comprising: The width | variety of the said left-right direction of each of the said 2nd joining area | region is constant in the said up-down direction.

  Invention of Claim 7 is an absorbent article of Claim 5, Comprising: The width of the said left-right direction of each of the said 2nd joining area | region leaves | separates from the said 1st joining area | region in the said up-down direction. It gradually decreases as

  Invention of Claim 8 is an absorbent article of Claim 7, Comprising: It is arranged in the said up-down direction, is joined to each of the said front part and the said back part along the said left-right direction, and shrinks. And further comprising a plurality of waistline elastic members forming a waistline gather, wherein each of the plurality of waistline elastic members avoids the two second joining regions, and a plurality of ends of the plurality of waistline elastic members are It overlaps with the absorber on both the left and right sides of either one of the two second bonding regions, and approaches the central side in the left-right direction as it moves away from the first bonding region in the vertical direction.

  Invention of Claim 9 is an absorbent article in any one of Claim 1 thru | or 8, Comprising: It is a pair provided along the edge of the both sides of the said left-right direction in the said wearer side of the said absorber. The side wall part is further provided.

  In this invention, mounting | wearing of an absorbent article can be made easy. In invention of Claim 3, manufacture of an absorbent article can be made easy. In the inventions according to claims 5 to 7, the absorber 2 can be prevented from twisting. According to the seventh aspect of the present invention, the absorbent article can be more easily attached. In invention of Claim 8, the adhesiveness with respect to the wearer of an absorbent article can be improved. In invention of Claim 9, the leakage of excrement can be prevented.

  FIG. 1 is a front view of an absorbent article 1 according to the first embodiment of the present invention (that is, a view of a part located on the abdomen side of a wearer), and FIG. 2 is a rear view of the absorbent article 1. It is the figure of the site | part located in a wearer's back side (namely). As shown in FIGS. 1 and 2, the absorbent article 1 has a trunk opening 11 at the upper end (that is, the upper end in FIGS. 1 and 2) and a pair of leg openings 12 at the lower part. This is a pants-type disposable diaper.

  As shown in FIG. 1 and FIG. 2, the absorbent article 1 includes a cylindrical exterior sheet 4 having a front portion 401 and a rear portion 403 that are in contact with the skin on the abdomen and back side of the wearer, and the exterior sheet 4. It is joined to the wearer side of the front part 401 and the rear part 403 across the lower opening (that is, the opening opposite to the upper opening serving as the trunk part opening 11), and from the lower end of the exterior sheet 4 to the lower side. An absorbent body 2 that protrudes and absorbs excretion from the wearer is provided to face the crotch portion of the wearer. In the absorbent article 1, the left and right sides of the front part 401 (that is, the parts on both sides in the width direction of the front part 401) are the left and right parts of the rear part 403 (that is, both sides of the rear part 403 in the width direction). The exterior sheet | seat 4 is cylindrical by being joined to each (part).

  FIG. 3 shows a state in which the absorbent article 1 is unfolded (that is, a state where the left and right side portions of the front portion 401 and the left and right side portions of the rear portion 403 are separated and extended). FIG. As shown in FIG. 3, the absorbent body 2 has a substantially rectangular shape in plan view, and the front part 401 and the rear part 403 of the exterior sheet 4 have a substantially rectangular shape with the same shape. In the absorbent article 1, the portions on both sides in the longitudinal direction of the absorbent body 2 (that is, the portions on both sides in the vertical direction in FIG. 3 and the upper end portion of the absorbent body 2 in FIGS. 1 and 2) are the exterior sheets 4. The front part 401 and the rear part 403 are attached to the wearer side by being joined by a hot melt adhesive. In a state where the absorbent article 1 is deployed, the front part 401 and the rear part 403 of the exterior sheet 4 are separated from each other and are connected by the absorbent body 2.

  The absorbent article 1 is a pair provided along the edges on both sides in the width direction perpendicular to the longitudinal direction (that is, the left-right direction in FIG. 3) over almost the entire length in the longitudinal direction on the wearer side of the absorbent body 2. The side wall part 3 is further provided. Two elastic members 31 extending in the longitudinal direction are joined to each of the pair of side wall portions 3. When the absorbent article 1 is spread as shown in FIG. 3, the elastic members 31 are in an expanded state. ing. In the absorbent article 1, when the elastic member 31 contracts, the side wall 3 rises toward the wearer side on the side of the absorbent body 2, and a three-dimensional gather that abuts near the base of the wearer's leg when worn is formed. Is done.

  FIG. 4 is a cross-sectional view of the absorbent article 1 cut at the position AA shown in FIG. As shown in FIGS. 3 and 4, the absorbent body 2 includes an absorbent core 22 having absorptivity, a top sheet 21 that covers the main surface on the inner side (that is, the wearer side) of the absorbent core 22, and the absorbent core 22. A back sheet 23 is provided to cover the main surface on the outside (that is, the side opposite to the wearer side). In FIG. 3, the outline of the absorbent core 22 is indicated by a thick broken line. The top sheet 21 and the back sheet 23 are joined to each other around the absorbent core 22 by a hot melt adhesive or the like. Moreover, the side wall part 3 is joined to the side of the absorption core 22 of the absorber 2 with a hot-melt adhesive or the like.

  The top sheet 21 is a non-woven fabric formed of a liquid-permeable material, for example, a hydrophilic fiber, and quickly captures moisture of excrement from the wearer and moves it to the absorbent core 22. Nonwoven fabrics used as the top sheet 21 are, for example, point bond nonwoven fabrics, air-through nonwoven fabrics, and spunlace nonwoven fabrics, and cellulose, rayon, cotton, and the like are usually used as hydrophilic fibers that form these nonwoven fabrics. As the top sheet 21, a liquid-permeable nonwoven fabric formed of hydrophobic fibers (for example, polypropylene, polyethylene, polyester, polyamide, nylon) whose surface is hydrophilically treated with a surfactant may be used. Alternatively, a plastic film having an aperture may be used.

  The absorbent core 22 is made of a mixture of a hydrophilic fiber (for example, pulverized pulp fiber or cellulose fiber) mixed with a granular water-absorbing polymer (for example, SAP (Super Absorbent Polymer)) such as a tissue paper or a liquid-permeable nonwoven fabric. It is formed by wrapping with a sheet and absorbs moisture that has passed through the top sheet 21 to quickly fix it. The cover sheet that wraps the hydrophilic fiber is bonded to the hydrophilic fiber and the water-absorbing polymer with a hot-melt adhesive to prevent the hydrophilic fiber from losing its shape and the water-absorbing polymer from falling off (especially after water absorption). To do.

  The back sheet 23 is a laminated sheet in which a non-woven fabric is laminated on the outer side of a water-repellent or liquid-impervious plastic film (that is, the side opposite to the absorbent core 22). The moisture once absorbed by the core 22 is prevented from oozing out of the back sheet 23. From the viewpoint of the wearer's comfort, it is preferable to use a plastic film having air permeability.

  In the absorbent article 1, the back sheet 23 of the absorbent body 2 is exposed on the side opposite to the wearer side between the front part 401 and the rear part 403 of the exterior sheet 4. For this reason, the touch of the absorbent article 1 can be improved by forming the outer side of the back sheet 23 with a nonwoven fabric. Nonwoven fabrics used for the backsheet 23 are, for example, spunbond nonwoven fabrics, meltblown nonwoven fabrics, and SMS (spunbond / meltblown / spunbond) nonwoven fabrics, and may be subjected to water repellent treatment as necessary. As the back sheet 23, a water-repellent or liquid-impervious nonwoven fabric or plastic film may be used alone.

  The side wall 3 is formed of a water-repellent or liquid-impervious nonwoven fabric (for example, a spunbond nonwoven fabric, a melt blown nonwoven fabric, an SMS nonwoven fabric), a plastic film, or a composite material thereof. From the viewpoint of improving the comfort of the absorbent article 1, it is preferable that the side wall portion 3 has air permeability. As the elastic member 31, for example, a polyurethane thread, a strip-shaped polyurethane film, a thread-shaped or strip-shaped natural rubber, or the like is used.

  As shown in FIG. 4, the front portion 401 of the exterior sheet 4 includes a first sheet 41 and a second sheet 42 laminated on the first sheet 41 and joined to the first sheet 41 with a hot melt adhesive or the like. (The same applies to the rear portion 403). On the second sheet 42 of the exterior sheet 4, the back sheet 23 of the absorbent body 2 is joined by a hot melt adhesive or the like. In the present embodiment, the first sheet 41 and the second sheet 42 are formed of a nonwoven fabric, so that the touch of the exterior sheet 4 is improved. In addition, as the 1st sheet | seat 41 and the 2nd sheet | seat 42, the laminated sheet of a plastic film or a plastic film, and a nonwoven fabric may be utilized.

  As shown in FIG. 1 to FIG. 3, the absorbent article 1 also includes a plurality of trunk portions arranged along the edge of the trunk portion opening 11 (that is, the edge of the upper opening of the tubular exterior sheet 4). The elastic member 51, a plurality of leg elastic members 52 arranged along the respective edges of the pair of leg openings 12 (that is, the edge of the opening on the lower side of the cylindrical exterior sheet 4), and the trunk elastic member 51 And a plurality of front elastic members 53 disposed in the front portion 401 along the left-right direction (that is, the width direction) between the leg elastic members 52 and the leg elastic members 52. Are further provided with a plurality of rear elastic members 54 disposed in the rear part 403 along the left-right direction.

  The body elastic member 51, the leg elastic member 52, the front elastic member 53, and the rear elastic member 54 are rubber-based between the first sheet 41 and the second sheet 42 (see FIG. 4) of the exterior sheet 4. Are joined to the first sheet 41 and the second sheet 42 by a hot melt adhesive or the like. As the trunk elastic member 51, the leg elastic member 52, the front elastic member 53, and the rear elastic member 54, for example, a polyurethane thread, a band-shaped polyurethane film, a thread-shaped or band-shaped natural rubber, or the like is used. In the form, a plurality of polyurethane yarns which are thread-like members having a fineness of 300 to 2000 dtex are used. Note that ultrasonic bonding, thermocompression bonding, or the like is employed as a method of bonding the body elastic member 51, the leg elastic member 52, the front elastic member 53, and the rear elastic member 54 to the first sheet 41 and the second sheet 42. You can also. However, from the viewpoint of simplifying the production of the absorbent article 1, adhesion with a hot melt adhesive is preferable.

  As shown in FIG. 3, the plurality of body elastic members 51 are individually provided in the front part 401 and the rear part 403 of the exterior sheet 4, and the left and right sides of the front part 401 and the rear part 403 are joined to each other. By doing so, it will be arrange | positioned over the perimeter of the trunk | drum opening 11 (refer FIG. 1 and FIG. 2) of the absorbent article 1. FIG. The body elastic member 51 is joined around the body opening 11 in a stretched state (preferably in a state of being stretched 1.1 to 5.0 times), and contracts to shrink the exterior sheet 4. To form a body opening gather.

  The plurality of leg elastic members 52 are arranged around the pair of leg openings 12 of the absorbent article 1 by joining the left and right sides of the front part 401 and the rear part 403 of the exterior sheet 4. It becomes. The leg elastic member 52 is joined around the leg opening 12 in a stretched state (preferably in a state stretched 1.1 to 5.0 times), and contracts the exterior sheet 4 by contracting. To form a leg opening gather.

  The plurality of front elastic members 53 and the rear elastic members 54 are arranged in the vertical direction of the absorbent article 1, and the left and right sides of the front part 401 and the rear part 403 of the exterior sheet 4 are joined together. And it will be arrange | positioned over the perimeter of the waist part (namely, site | part between trunk | drum opening 11 and leg part opening 12) of the absorbent article 1. FIG. In the following description, the front elastic member 53 and the rear elastic member 54 are collectively referred to as a “trunk elastic member”. Like the trunk elastic member 51 and the leg elastic member 52, the waist elastic member is stretched to the front part 401 and the rear part 403 of the exterior sheet 4 (preferably 1.1 times to 5.0 times). The outer sheet 4 is contracted by being contracted and contracted to form a waistline gather (that is, a front gather and a rear gather).

  FIG. 5 is a plan view seen from the wearer side in a state where the exterior sheet 4 is unfolded. In FIG. 5, the absorbent body 2 is drawn with a broken line, and a joining region provided between the absorbent body 2 and the exterior sheet 4 (in this embodiment, the back sheet 23 of the absorbent body 2 (see FIG. 4)) A parallel oblique line is given to a region to which the hot melt adhesive that joins the second sheet 42 (see FIG. 4) of the exterior sheet 4 is applied.

  As shown in FIG. 5, between the absorbent body 2 and the exterior sheet 4, two first ends where the longitudinal ends of the absorbent body 2 are joined to the front part 401 and the rear part 403 of the exterior sheet 4, respectively. Between the joint region 61 and the two first joint regions 61, two second joint regions 62 are provided in which a part of the absorbent body 2 is joined to the front part 401 and the rear part 403 of the exterior sheet 4, respectively.

  Each of the two first bonding regions 61 is provided over substantially the entire width in the left-right direction (that is, the width direction) of the absorber 2. The left and right sides of the first joining region 61 between the absorbent body 2 and the exterior sheet 4 and the side opposite to the second joining region 62 of the first joining region 61 are usually hot when the absorbent article 1 is manufactured. A margin having a slight width (that is, a region where no adhesive is applied) is provided in consideration of the application accuracy of the melt adhesive.

  The second joining region 62 in the front portion 401 of the exterior sheet 4 is the first joining region 61 on the front portion 401 side and the lower end portion of the front portion 401 (that is, the lower end portion in FIG. 1, Between the front part 401 and the rear part 403 side) in the up-down direction of the absorbent article 1 (that is, the up-down direction in FIG. 1). The second joining region 62 in the rear portion 403 is the first joining region 61 on the rear portion 403 side and the lower end portion of the rear portion 403 (that is, the lower end portion in FIG. 2 and the rear portion in FIG. 5). Between the part 403 and the front part 401 side), the absorbent article 1 is continuously provided in the vertical direction (that is, the vertical direction in FIG. 2). On the opposite side of each of the second bonding regions 62 from the first bonding region 61, a margin of a slight width that is usually necessary in consideration of the application accuracy of the hot melt adhesive when manufacturing the absorbent article 1 (that is, An area where no adhesive is applied is provided. In FIG. 5, the margin is not shown for the sake of illustration.

  The width in the left-right direction of each second bonding region 62 is approximately constant in the longitudinal direction of the absorbent body 2 (that is, the vertical direction of the absorbent article 1), and is 15% or more and 60% of the width in the left-right direction of the absorbent body 2. Or less (more preferably 30% or more and 40% or less). In the present embodiment, the width of the absorber 2 is about 210 mm, and the width of each second bonding region 62 is about 30 mm to 130 mm. In the absorbent article 1, the exterior sheet 4 and the absorbent body 2 are not joined on both sides in the left-right direction of the two second joining regions 62, and a part of the non-joining region (that is, the absorbent body). 2 near the edges on both the left and right sides) overlaps a part of the side wall 3 with the absorber 2 interposed therebetween.

  When the absorbent body 2 is joined to the exterior sheet 4, the hot melt adhesive is applied to the entirety of the first joining region 61 and the second joining region 62 of the absorbent body 2 or the exterior sheet 4 with almost no gap ( So-called solid). In addition, in the 1st joining area | region 61, if the hot-melt-adhesive is apply | coated over the full width of the absorber 2, you may apply | coat, for example in the stripe form arranged in the left-right direction. Similarly, in the second bonding region 62, the hot melt adhesive is continuously applied in the vertical direction of the absorbent article 1 between the first bonding region 61 and the lower end portion of the exterior sheet 4. For example, it may be applied in stripes arranged in the vertical direction.

  In the front portion 401 and the rear portion 403 of the exterior sheet 4, the leg elastic members 52 are provided on both the left and right sides of the second joining region 62 while avoiding the second joining region 62. The part of the leg elastic member 52 on the second joining region 62 side is a non-joining region provided on the left and right sides of the second joining region 62 (that is, a region where the absorber 2 and the exterior sheet 4 are not joined). It overlaps with the absorber 2. Further, the front elastic member 53 and the rear elastic member 54 (that is, the waist elastic member) are provided on both the left and right sides of the first joint region 61 while avoiding the first joint region 61.

  In the front part 401 of the exterior sheet 4, each of the plurality of front part elastic members 53 arranged in the vertical direction of the absorbent article 1 avoids the second joining region 62 on the front part 401 side and each front part elastic member 53. The second bonding region 62 side of the second bonding region 62 overlaps the absorber 2 in the left and right non-bonding regions of the second bonding region 62. Similarly, in the rear portion 403, each of the plurality of rear elastic members 54 arranged in the vertical direction of the absorbent article 1 avoids the second joining region 62 on the rear portion 403 side and The site | part on the 2 joining area | region 62 side has overlapped with the absorber 2 in the non-joining area | region of the right-and-left both sides of the said 2nd joining area | region 62. FIG.

  As described above, in the absorbent article 1, the absorbent body 2 is in each of the front part 401 and the rear part 403 of the exterior sheet 4 in the two second joining regions 62 between the absorbent body 2 and the exterior sheet 4. It is joined to the lower end of the. And in the lower end part of the front part 401 and the rear part 403, a non-joining area | region (namely, area | region where the absorber 2 and the exterior sheet | seat 4 are not joined) is provided in the right-and-left both sides of the 2nd joining area | region 62. Thereby, the restriction | limiting of the exterior sheet 4 with respect to the site | part of the right-and-left both sides (namely, site | part near leg part opening 12) between the front part 401 and the back part 403 of the absorber 2 is suppressed, and the said site | part is deform | transformed easily. Thus, the peripheral length of the leg opening 12 can be increased. As a result, when the absorbent article 1 is attached, the legs can be easily inserted into the leg opening 12, and the absorbent article 1 can be easily attached.

  Further, in the absorbent article 1, the absorbent body 2 is joined to the front part 401 and the rear part 403 of the exterior sheet 4 over the entire width in the two first joining regions 61 between the absorbent body 2 and the exterior sheet 4. ing. In this way, by joining the corners of the absorbent body 2 to the exterior sheet 4, it is possible to prevent the feet inserted from the trunk opening 11 from being caught by the absorbent body 2 when the absorbent article 1 is mounted. Therefore, the absorbent article 1 can be more easily attached.

  Furthermore, when the corners of the absorbent body 2 are joined to the exterior sheet 4, absorption is performed on the front part 401 and the rear part 403 (scheduled sheet members) of the exterior sheet 4 when the absorbent article 1 is manufactured. It can prevent that the corner | angular part of the body 2 falls, and manufacture of the absorbent article 1 can be made easy. In addition, as described above, the absorbent body 2 is also joined to the lower ends of the front part 401 and the rear part 403 of the exterior sheet 4, so that the absorbent body 1 and the exterior sheet 4 are in front of each other when the absorbent article 1 is manufactured. Since the part 401 and the rear part 403 can be easily and integrally handled, the absorbent article 1 can be manufactured more easily.

  In the absorbent article 1, the outer sheet 4 avoids the second joint region 62 (that is, does not overlap the second joint region 62) by the waistline elastic members (that is, the front elastic member 53 and the rear elastic member 54). By being bonded to the outer peripheral sheet 4, it is possible to prevent the exterior sheet 4 from contracting in the second bonding region 62, and to suppress the curling of the absorbent body 2 due to contraction of the waistline elastic member. As a result, it is possible to prevent the shape and damage of the absorbent core 22 of the absorbent body 2. In addition, since a part of the waistline elastic member overlaps the absorbent body 2 on both the left and right sides of the second joining region 62, the length of the waistline elastic member can be sufficiently secured, and the absorbent article 1 is worn. Adhesiveness to a person can be sufficiently maintained. Furthermore, the waistline elastic member is joined to the exterior sheet 4 while avoiding the first joining region 61, so that the absorber 2 can be further prevented from curling due to the shrinkage of the waistline elastic member.

  In addition, the leg elastic member 52 avoids the second joint region 62 and overlaps the absorbent body 2 on both the left and right sides of the second joint region 62, so that the wearer in the vicinity of the leg opening 12 of the absorbent article 1 can be used. It is possible to suppress the curling of the absorbent body 2 due to the contraction of the leg elastic member 52 while sufficiently maintaining the adhesion to the body.

  In the absorbent article 1, the two second joining regions 62 are respectively provided continuously in the vertical direction of the absorbent article 1 between the first joining region 61 and the lower end portion of the exterior sheet 4. 2 can be fixed to the exterior sheet 4 over substantially the entire length of the portion overlapping the exterior sheet 4 (that is, the entire length excluding the above-described margin). Thereby, it can suppress further that the absorber 2 is drowned by a wearer's operation | movement.

  In the absorbent article 1, the width of the second joining region 62 is approximately constant in the vertical direction of the absorbent article 1, so that hot melt with respect to the second joining region 62 is applied in the application of the hot melt adhesive by slit coating or the like. Application of an adhesive (that is, application of a hot melt adhesive to the second bonding region 62 of the absorber 2 or the exterior sheet 4) can be facilitated, and the absorbent body 2 and the exterior sheet 4 in the second bonding region 62 can be facilitated. Can be easily joined. As a result, the manufacture of the absorbent article 1 can be simplified.

  Further, the width of the second bonding region 62 in the left-right direction is set to 15% (more preferably 30% or more) of the width of the absorbent body 2 so that the absorbent body 2 is firmly fixed to the exterior sheet 4. Can do. Furthermore, the width in the left-right direction of the second bonding region 62 is set to 60% or less (more preferably 40% or less) of the width of the absorber 2, thereby sufficiently securing the peripheral length of the leg opening 12. The absorbent article 1 can be more easily mounted, and the waistline elastic members (that is, the front elastic member 53 and the rear elastic member 54) are sufficiently secured to wear the absorbent article 1. The adhesion to the person can be reliably ensured. In addition, when the width | variety of the left-right direction of the absorber 2 changes in a longitudinal direction, the ratio with respect to the width | variety of the absorber 2 of the width | variety of the 2nd joining area | region 62 is the absorber 2 in the arbitrary positions of the longitudinal direction of the absorber 2. The ratio in the cross section cut | disconnected perpendicularly | vertically to the longitudinal direction is meant.

  In the exterior sheet 4, each of the front part 401 and the rear part 403 has a substantially rectangular shape, whereby the manufacture of the absorbent article 1 can be simplified. Moreover, manufacture of the absorbent article 1 can be further simplified by making the front part 401 and the rear part 403 into the same shape.

  In the absorbent article 1, excrement from the wearer is caused by the pair of side wall portions 3 provided along the edges on both sides of the absorbent body 2 (that is, the edges of the non-joined areas on the left and right sides of the second joined area 62). Leakage can be prevented more reliably.

  Next, an absorbent article according to a second embodiment of the present invention will be described. FIG. 6 is a plan view of the absorbent article according to the second embodiment as viewed from the wearer side in a state where the exterior sheet 4a is developed. In FIG. 6, the absorbent body 2 is drawn with a broken line as in FIG. 5, and a parallel oblique line is given to the joining region provided between the absorbent body 2 and the exterior sheet 4 a. As shown in FIG. 6, in the absorbent article which concerns on 2nd Embodiment, the shape of the joining area | region between the absorber 2 and the exterior sheet | seat 4a differs from 1st Embodiment. Other configurations are substantially the same as those of the absorbent article 1 shown in FIGS. 1 to 5, and are denoted by the same reference numerals in the following description.

  As shown in FIG. 6, in the absorbent article which concerns on 2nd Embodiment, between the absorber 2 and the exterior sheet 4a, the both ends of the longitudinal direction of the absorber 2 are the front part 401 of the exterior sheet 4a, and Two first joining regions 61 joined to the rear portion 403 respectively, and a part of the absorbent body 2 is joined to the front portion 401 and the rear portion 403 of the exterior sheet 4a between the two first joining regions 61, respectively. Two second bonding regions 62a are provided.

  Each of the two first bonding regions 61 is provided over substantially the entire width in the left-right direction (that is, the width direction) of the absorber 2, as in the first embodiment. The second joining region 62a in the front portion 401 of the exterior sheet 4a includes a first joining region 61 on the front portion 401 side and a lower end portion of the front portion 401 (that is, an end portion on the rear portion 403 side of the front portion 401 in FIG. 6). ) In the up-down direction of the absorbent article. Further, the second joining region 62a in the rear portion 403 includes a first joining region 61 on the rear portion 403 side and a lower end portion of the rear portion 403 (that is, an end portion on the front portion 401 side of the rear portion 403 in FIG. 6). Are provided continuously in the vertical direction of the absorbent article.

  The width in the left-right direction of each second bonding region 62a is the first bonding region 61 (that is, the first bonding continuous with each second bonding region 62a) in the longitudinal direction of the absorbent body 2 (that is, the vertical direction of the absorbent article). It gradually decreases as it moves away from the region 61) toward the lower side of the absorbent article. In the absorbent article, the left and right sides of the front portion 401 of the exterior sheet 4a and the left and right sides of the rear portion 403 are separated and extended in the left and right sides of each of the two second joining regions 62a. The exterior sheet 4a and the absorbent body 2 are not joined, and a part of the non-joined region overlaps a part of the side wall 3 (see FIG. 3) with the absorbent body 2 interposed therebetween. . When the absorbent body 2 is joined to the exterior sheet 4a, the hot melt adhesive is applied to the entire first joint area 61 and the second joint area 62a of the absorbent body 2 or the exterior sheet 4a with almost no gap ( So-called solid).

  In the absorbent article according to the second embodiment, the leg elastic members 52 are provided on both the left and right sides of the second joint region 62 so as to avoid the second joint region 62, as in the first embodiment. The part elastic member 53 and the rear part elastic member 54 (that is, the waistline elastic member) are provided on both the left and right sides of the first joint region 61 while avoiding the first joint region 61.

  Each of the plurality of front elastic members 53 and the rear elastic members 54 avoids the second joining region 62a of the front portion 401 and the rear portion 403, and each of the front elastic members 53 and the rear elastic members 54 The site | part on the 2nd joining area | region 62a side has overlapped with the absorber 2 in the non-joining area | region of the right-and-left both sides of the 2nd joining area | region 62a. As the plurality of end portions of the plurality of front elastic members 53 and the rear elastic members 54 (that is, the plurality of waistline elastic members) that overlap the absorber 2 move away from the first joining region 61 in the vertical direction of the absorbent article, It arrange | positions so that the center side of the left-right direction of an absorbent article may be approached along the edge of the left-right both sides of the 2nd joining area | region 62a.

  As described above, in the absorbent article according to the second embodiment, the absorbent body 2 is the front portion of the exterior sheet 4a in the two second joining regions 62a between the absorbent body 2 and the exterior sheet 4a. It is joined to the lower end portions of 401 and the rear portion 403. And in the lower end part of the front part 401 and the rear part 403, a non-joining area | region (namely, area | region where the absorber 2 and the exterior sheet | seat 4a are not joined) is provided in the both right and left sides of the 2nd joining area | region 62a. Thereby, like 1st Embodiment, the restrictions of the exterior sheet | seat 4a with respect to the site | part of the leg part opening 12 (refer FIG.1 and FIG.2) of the absorber 2 are suppressed, and the said site | part can be deform | transformed easily. The circumferential length of the leg opening 12 can be increased. As a result, when the absorbent article is attached, the leg can be easily inserted into the leg opening 12, and the absorbent article can be easily attached.

  In the absorbent article, similarly to the first embodiment, the absorbent body 2 is joined to the front part 401 and the rear part 403 of the exterior sheet 4a over the entire width in the two first joining regions 61. . For this reason, it can prevent that the toe inserted from trunk part opening 11 (refer to Drawing 1 and Drawing 2) at the time of wearing of an absorptive article gets caught in absorber 2, and wearing of an absorptive article is more. While making it easy, it can prevent that the corner | angular part of the absorber 2 falls on the exterior sheet | seat 4a at the time of manufacture of an absorbent article, and manufacture of an absorbent article can be made easy. .

  Further, as described above, the absorbent body 2 is also joined to the lower end portions of the front part 401 and the rear part 403 of the exterior sheet 4a, so that the absorbent body 2 and the exterior sheet 4a are in front when the absorbent article is manufactured. Since the part 401 and the rear part 403 can be easily and integrally handled, the absorbent article can be manufactured more easily.

  In the absorbent article according to the second embodiment, in particular, the width of each second joining region 62a gradually decreases as the distance from the first joining region 61 increases in the vertical direction of the absorbent article. In the vicinity of the lower end portion, a large non-bonded area with the exterior sheet 4a in the left and right sides of the absorbent body 2 can be secured, and the circumference of each of the pair of leg openings 12 formed at the lower end of the exterior sheet 4a. The length can be easily increased. As a result, the absorbent article can be more easily attached.

  On the other hand, since the second joining region 62a can be made relatively large in the portion away from the leg opening 12 of the absorber 2 (that is, in the vicinity of both ends in the longitudinal direction of the absorber 2), the absorber 2 Can be firmly fixed to the exterior sheet 4a, and the absorber 2 can be further prevented from being drowned by the wearer's operation or the like.

  In the absorbent article, as in the first embodiment, the waistline elastic members (that is, the front elastic member 53 and the rear elastic member 54) avoid the second joint region 62a and the left and right sides of the second joint region 62a. By overlapping with the absorbent body 2 in the non-bonded regions on both sides, it is possible to suppress the curling of the absorbent body 2 due to the shrinkage of the waistline elastic member while maintaining sufficient adhesion to the wearer of the absorbent article. Further, the two second joining regions 62a are respectively provided continuously in the vertical direction of the absorbent article between the first joining region 61 and the lower end portion of the exterior sheet 4a, thereby absorbing by the wearer's operation or the like. It is possible to further suppress the body 2 from drowning.

  In the absorbent article according to the second embodiment, in particular, the absorbent article as the plurality of end portions that overlap the absorber 2 of the plurality of waistline elastic members move away from the first joining region 61 in the vertical direction of the absorbent article. By arrange | positioning so that it may approach the center side of the left-right direction, the length of a waist elastic member can be increased and the adhesiveness with respect to the wearer of an absorbent article can be improved more.

  In the exterior sheet 4a, as in the first embodiment, the front part 401 and the rear part 403 are substantially rectangular in shape, whereby the manufacture of the absorbent article can be simplified. In addition, the pair of side wall portions 3 provided along the edges on both sides of the absorbent body 2 (that is, the edges of the non-joined regions on the left and right sides of the second joined region 62a) further prevent the excrement from leaking from the wearer. It can be surely prevented.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited to the said embodiment, A various change is possible.

  In the absorbent article according to the above embodiment, the plurality of waistline elastic members provided on the left and right sides of the first joint region 61 and the second joint region are individually provided on the left and right sides of the first joint region 61 and the second joint region. These elastic members may be joined together, and after the plurality of elastic members are joined over the entire width of the front part 401 and the rear part 403, the first joining region 61 or the first part of each elastic member may be formed. You may form by cut | disconnecting the part which overlaps with 2 joining area | regions in multiple places, and losing contraction force (it is the same also in the leg part elastic member 52).

  The waistline elastic member does not necessarily have to be bonded to the exterior sheet avoiding the first bonding region 61 and the second bonding region, and when necessary, for example, to improve the adhesion in the waistline part of the absorbent article, It may be joined to the exterior sheet while overlapping with the first joining region 61 and the second joining region. Similarly, the leg elastic member 52 may be joined to the exterior sheet while overlapping with the second joining region.

  7 to 10 are plan views of the exterior sheet showing other preferable shapes of the first joining region and the second joining region. 7 to 10, the absorbent body 2 is drawn with a broken line in the same manner as in FIG. 5, and a parallel oblique line is given to the joining region provided between the absorbent body 2 and the exterior sheet.

  In the exterior sheet 4b illustrated in FIG. 7, the width in the left-right direction of each of the two second bonding regions 62b on the first bonding region 61 side gradually increases as the distance from the first bonding region 61 increases in the vertical direction of the absorbent article. The width of the lower end portion of the exterior sheet 4b (that is, the front portion 401 and the rear portion 403) in the second joining region 62b is made constant in the vertical direction. Thereby, similarly to the said embodiment, mounting | wearing of an absorbent article can be made easy.

  In the exterior sheet 4 c shown in FIG. 8, the width in the left-right direction of the second bonding region 62 c decreases stepwise as the distance from the first bonding region 61 increases in the vertical direction of the absorbent article. Accordingly, it is possible to easily attach the absorbent article, and it is easy to apply the hot melt adhesive to the second bonding region 62c because the second bonding region 62c is a set of rectangular regions. You can also

  In the exterior sheet 4d shown in FIG. 9, non-joint areas are provided on both the left and right sides of the second joining area 62d only at the lower end of the exterior sheet 4d, and in other parts, the second joining area 62d is the first joining area. Similar to the region 61, it is provided over the entire width of the absorber 2. Further, in the exterior sheet 4e shown in FIG. 10, two rectangular second joining regions 62e are provided at the lower end portion of the exterior sheet 4e apart from the first joining region 61, and both left and right sides of the second joining region 62e, A non-joining region is provided between the second joining region 62e and the first joining region 61. In any case, the absorbent article can be easily attached as in the above embodiment.

  In any exterior sheet of the absorbent article described above, the front portion 401 and the rear portion 403 do not necessarily have the same shape, and the shapes of the front portion 401 and the rear portion 403 are also limited to a substantially rectangular shape. Not. For example, the length of the rear portion 403 in the vertical direction may be larger than that of the front portion 401, and the lower end portion of the rear portion 403 may protrude downward from the lower end edge of the front portion 401.

  In the first bonding region 61 and the second bonding region of the absorbent article, the hot melt adhesive may be applied in a lattice shape or a dot shape, or may be applied in a spiral shape extending in the vertical direction or the horizontal direction. Good. In addition, the bonding between the absorbent body 2 and the exterior sheet in the first bonding region 61 and the second bonding region is not limited to that using a hot melt adhesive, and may be performed by, for example, ultrasonic bonding or thermocompression bonding. .

It is a front view of the absorptive article concerning a 1st embodiment. It is a rear view of an absorbent article. It is a top view in the state where an absorptive article was developed. It is sectional drawing of an absorbent article. It is a top view of the state which developed the exterior sheet. It is a top view in the state where the exterior sheet of the absorptive article concerning a 2nd embodiment was developed. It is a top view of the state where the exterior sheet of other absorptive articles was developed. It is a top view of the state where the exterior sheet of other absorptive articles was developed. It is a top view of the state where the exterior sheet of other absorptive articles was developed. It is a top view of the state where the exterior sheet of other absorptive articles was developed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Absorbent article 2 Absorber 3 Side wall part 4, 4a-4e Exterior sheet 11 trunk | drum opening 12 leg | leg opening 51 trunk | drum elastic member 52 leg | leg elastic member 53 front part elastic member 54 back part elastic member 61 1st joining area | region 62, 62a-62e 2nd junction area 401 front part 403 back part

Claims (9)

A pants-type absorbent article having a trunk opening at the upper end and a pair of leg openings at the bottom,
A cylindrical outer sheet having a front part and a rear part in contact with the wearer's abdomen and dorsal skin, wherein the left and right sides of the front part are respectively joined to the left and right sides of the rear part;
It is joined to the front part and the rear part across the lower opening of the exterior sheet on the wearer side of the exterior sheet, protrudes downward from the lower end of the exterior sheet, and faces the wearer's crotch part. An absorber that absorbs excrement from the wearer,
With
Between the outer sheet and the absorbent body, two first joining regions in which both ends in the longitudinal direction of the absorbent body are joined to the front part and the rear part over the entire width in the left-right direction, and the absorption A part of the body has two second joining regions joined to the respective lower ends of the front part and the rear part;
In the state where the left and right side portions of the front portion and the left and right side portions of the rear portion are separated and extended, the exterior sheet is disposed on both sides of the two second joining regions in the left and right directions, respectively. An absorbent article, wherein the absorbent body is not joined. The absorbent article according to claim 1,
The absorbent article, wherein a width of each of the two second joining regions in the left-right direction is 15% or more and 60% or less of the width in the left-right direction of the absorbent body. The absorbent article according to claim 1 or 2,
Each of the said front part and the said back part is substantially rectangular shape, The absorbent article characterized by the above-mentioned. The absorbent article according to any one of claims 1 to 3,
A body elastic member that forms a body opening gather by being contracted while being joined to the exterior sheet along the edge of the body opening;
A leg elastic member that forms a leg opening gather by being contracted and contracted along the opening on the lower side of the exterior sheet;
With
The absorbent article, wherein the leg elastic members are provided on both left and right sides of the two second joining regions. The absorbent article according to any one of claims 1 to 4,
The absorbent article, wherein the two second joining regions are provided continuously in the vertical direction between each of the two first joining regions and the lower end portion of the exterior sheet. The absorbent article according to claim 5,
The absorbent article, wherein a width of each of the two second joining regions in the left-right direction is constant in the up-down direction. The absorbent article according to claim 5,
The absorbent article, wherein the width in the left-right direction of each of the two second joining regions gradually decreases as the distance from the first joining region increases in the up-down direction. The absorbent article according to claim 7,
A plurality of waistline elastic members that are arranged in the vertical direction and are joined to each of the front part and the rear part along the horizontal direction and contract to form a waistline gather;
Each of the plurality of waistline elastic members avoids the two second joining regions,
A plurality of ends of the plurality of waistline elastic members overlap with the absorber on both left and right sides of either one of the two second joining regions, and the center in the left-right direction as the distance from the first joining region increases in the up-down direction. An absorbent article characterized by approaching the side. The absorbent article according to any one of claims 1 to 8,
The absorbent article further comprising a pair of side wall portions provided along edges on both sides in the left-right direction on the wearer side of the absorbent body.

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