JP5414617B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article that receives excrement from a wearer.

  Conventionally, in absorbent articles such as disposable diapers, when loose stool containing a lot of water is excreted, the loose stool spreads between the wearer and the absorbent article and adheres to the wearer's skin over a wide range. Various proposals have been made to prevent this.

  For example, in the disposable diaper of patent document 1, a 2nd core is provided on the front part of the 1st core covering the full length, and let the space between a 1st core and a 2nd core be a pocket which accommodates excrement. The In the disposable diaper of Patent Document 1, the front end of the second core is fixed on the first core, and the intersecting portion between both side portions of the second core and the free end portion on the crotch region side is connected to the free edge portion of the leak-proof cuff. The elastic elastic yarn provided at the free end of the leak-proof cuff is contracted and the leak-proof cuff is raised, so that the free end portion of the second core is separated from the first core to form a pocket opening. Is done.

JP 2002-209941 A

  By the way, in the disposable diaper of patent document 1, in order to enlarge the internal space of a pocket, it is necessary for the leak-proof cuff to stand up largely. For this reason, the contraction force by the elastic elastic yarn provided at the free end of the leak-proof cuff is increased so that the leak-proof cuff can stand up while lifting the second core. However, if the number of elastic elastic yarns is increased in order to increase the contraction force, it is necessary to arrange a plurality of elastic elastic yarns in a relatively narrow region, which complicates the structure and manufacturing process of the disposable diaper. . Further, if an attempt is made to join the leak-proof cuff in a state where a strong tension is applied to the elastic stretchable yarn in order to increase the contraction force, the elastic stretchable yarn may break during manufacture and the productivity of the disposable diaper may decrease.

  This invention is made | formed in view of the said subject, and aims at enlarging the internal space of the pocket of an absorbent article easily.

  Invention of Claim 1 is an absorbent article which receives excrement from a wearer, Comprising: A back sheet member and the outer edge part are joined on the said back sheet member on the said back sheet member, The said, An absorbent sheet member having an opening through which the back sheet member is exposed at a position facing the crotch portion of the wearer, and extends in the longitudinal direction on both left and right side portions of the absorbent sheet member, and the elastic member extends along the longitudinal direction. A pair of standing gathers joined to each other and a pair of tension members joined to the pair of standing gathers on both sides of the opening in the left-right direction, and the absorbent sheet member has the opening in the longitudinal direction. An absorbent core disposed on at least one side of the absorbent core, and a liquid-permeable core coating sheet that covers the absorbent core, between the absorbent core and the backsheet member A pocket extending in the longitudinal direction from the opening is formed, and the absorbent core is joined to the pair of standing gathers through the core covering sheet around the opening, and the pair of standing members is formed by the pair of tension members. The gather portion can be in a state of being pulled outward in the left-right direction, or has been pulled.

  Invention of Claim 2 is an absorbent article of Claim 1, Comprising: Each of a pair of said tension member is strip | belt shape or string shape, one end is joined to a standing gather part, and the other end is , It can be joined to the outer surface of the back sheet member beyond the side edge of the back sheet member, or is joined.

  Invention of Claim 3 is an absorbent article of Claim 2, Comprising: The said other end of a pair of said tension member can be joined to the outer surface of the said back seat | sheet member, The said pair of tension member However, it extends in the direction corresponding to the front side of the wearer from the joint position with the pair of standing gathers.

  Invention of Claim 4 is an absorbent article in any one of Claim 1 thru | or 3, Comprising: A pair of said tension member has elasticity.

  The invention according to claim 5 is the absorbent article according to claim 4, wherein each of the pair of tensile members is a strip-shaped nonwoven fabric joined with an elastic member.

  Invention of Claim 6 is an absorbent article in any one of Claim 1 thru | or 5, Comprising: The said absorption core is a 1st absorption core arrange | positioned at the said one side of the said opening in the said longitudinal direction. And a pair of second absorbent cores disposed on both sides of the opening in the left-right direction, and the pair of second absorbent cores are joined to the pair of standing gathers via the core covering sheet.

  Invention of Claim 7 is an absorbent article in any one of Claim 6, Comprising: A said 1st absorption core is a front part absorption core arrange | positioned at the said wearer's front side.

  Invention of Claim 8 is an absorbent article of Claim 7, Comprising: The said absorption core is further equipped with the 3rd absorption core arrange | positioned at the back side of the said wearer, The said 3rd absorption core And another pocket is formed between the backsheet member and the backsheet member.

  The invention according to claim 9 is the absorbent article according to any one of claims 1 to 8, wherein the absorbent article is attached to the inside of the exterior article worn by the wearer.

  In the present invention, the internal space of the pocket of the absorbent article can be easily increased.

It is a top view of an absorptive article. It is sectional drawing of an absorbent article. It is sectional drawing of an absorbent article. It is sectional drawing of an absorbent article. It is a top view of an absorptive article. It is a top view of an absorptive article.

  FIG. 1 is a plan view showing an absorbent article 1 according to an embodiment of the present invention in a state where the absorbent article 1 is expanded in the longitudinal direction (that is, the vertical direction in FIG. 1). The absorbent article 1 is an auxiliary absorbent device that is attached to the inside of a disposable diaper or the like that is an exterior article worn by a wearer and receives excrement such as loose stool from the wearer. In FIG. 1, the absorbent article 1 is drawn with the surface in contact with the wearer (that is, the wearer side) facing forward.

  As shown in FIG. 1, the absorbent article 1 has a substantially sheet-like main body 2 that is substantially rectangular in plan view, a left-right direction perpendicular to the longitudinal direction of the main body 2 (the width direction of the main body 2, A pair of side sheets 3 provided over the entire length in the longitudinal direction on both sides of FIG. 1 and a pair of tensions provided on the pair of side sheets 3 on both sides in the left and right direction. A member 5 is provided.

  The upper part 201 and the lower part 203 in FIG. 1 of the main body 2 are parts that contact the skin of the wearer's abdomen and dorsal side, respectively. In the following description, “front part 201” and “rear part” Part 203 ". Further, a portion 202 that is continuous between the front portion 201 and the rear portion 203 between the front portion 201 and the rear portion 203 and faces the crotch portion of the wearer is referred to as an “intermediate portion 202”.

  2 and 3 are cross-sections of the absorbent article 1 cut along a plane perpendicular to the longitudinal direction of the absorbent article 1 at the positions AA and BB shown in FIG. FIG. 4 is a cross-sectional view of the absorbent article 1 cut along a plane perpendicular to the left-right direction of the absorbent article 1 at the position C-C. In the absorbent article 1, the structure of the main body 2 and the rear part 203 of the side seat 3 is substantially the same as the structure of the front part 201.

  As shown in FIG. 1 to FIG. 3, the pair of side sheets 3 are each a belt-like fixing part 33 joined on the left and right side parts of the main body part 2, and the gathers that are continuous with the fixing part 33 and at least partially stand up. And a plurality of upright gathering portion elastic members 32a to 32c joined to the gathering portion 34 along the longitudinal direction. The side sheet 3 is a water-repellent or liquid-impervious nonwoven fabric (for example, spunbond nonwoven fabric, melt blown nonwoven fabric, SMS (spunbond, Melt blown / spun bond) non-woven fabric) is folded in two along a fold line extending in the longitudinal direction, and the raised gather elastic members 32a to 32c are sandwiched between the two folded portions. For example, polyurethane yarn, belt-like polyurethane film, yarn-like or belt-like natural rubber, and the like are used as the standing gather elastic members 32a to 32c, and polyurethane yarn is used in the present embodiment.

  The gather part 34 is joined on the main body part 2 at both ends in the longitudinal direction. In the absorbent article 1, the standing gather elastic members 32 a to 32 c that are joined along the longitudinal direction contract, whereby portions 341 excluding both longitudinal ends of the gather 34 (hereinafter referred to as “standing gathers 341”). 2), as shown in FIG. 2 and FIG. 3, a three-dimensional gather that stands up toward the wearer side on the side of the main body 2 and abuts near the base of the wearer's foot when worn is formed. .

  As shown in FIG. 3, the side gathering core 222 described later is joined to the standing gather part 341 at a position spaced from the free end 343, and the standing gather part elastic member 32 c is connected to the standing gather part 341 and the side part. It overlaps with the joint region 344 with the absorbent core 222. The standing gather portion elastic members 32 a and 32 b are disposed between the free end 343 of the standing gather portion 341 and the joining region 344. In the present embodiment, the standing gather portion elastic member 32 a is disposed on the free end 343 of the standing gather portion 341 and extends in the longitudinal direction along the free end 343.

  As shown in FIGS. 1 to 4, the main body 2 is overlapped on the backsheet member 23 and the backsheet member 23 (that is, the wearer side of the backsheet member 23), and the outer edge portion is the backsheet member 23. The absorbent sheet member 20 is provided. As shown in FIGS. 1 and 3, an opening 25 is provided at a position facing the crotch portion of the wearer on the rear side (that is, the lower side in FIG. 1) from the longitudinal center of the absorbent sheet member 20. The width of the opening 25 is smaller than the width of the absorbent article 1. The back sheet member 23 has an exposed region 234 that is exposed from the opening 25 of the absorbent sheet member 20 and directly faces the wearer's crotch. On both the left and right sides of the opening 25, the pair of upright gathers 341 extends in the longitudinal direction on the left and right sides of the absorbent sheet member 20.

  As shown in FIG. 1, the absorbent sheet member 20 is disposed on both sides in the left-right direction of the front absorbent core 221 and the opening 25 that are disposed on the wearer's front side (abdominal side) when the absorbent article 1 is worn. A pair of side absorbent cores 222 and a rear absorbent core 223 disposed on the back side of the wearer are provided. The length in the longitudinal direction of the front absorbent core 221 is larger than the length in the longitudinal direction of the rear absorbent core 223. The front absorbent core 221, the pair of side absorbent cores 222, and the rear absorbent core 223 are integrally formed continuously in the longitudinal direction of the absorbent sheet member 20, and in the following description, the front absorbent core 221 is formed. The pair of side absorption cores 222 and the rear absorption core 223 are collectively referred to as “absorption core 22”. In FIG. 1, the outline of the absorbent core 22 is drawn with a thick broken line in order to facilitate understanding of the drawing.

  As shown in FIGS. 2 to 4, the absorbent sheet member 20 also has an upper surface and a lower surface of the absorbent core 22 (that is, the front absorbent core 221, the side absorbent core 222, and the rear absorbent core 223, respectively). A liquid-permeable core covering sheet 21 is provided to cover the wearer side and the back sheet member 23 side). The core cover sheet 21 includes a first cover sheet 211 that covers the upper surface of the absorbent core 22 and a second cover sheet 212 that covers the lower surface of the absorbent core 22.

  As shown in FIG. 3, the pair of side part absorption cores 222 are provided on the left and right sides of the opening 25 (that is, around the opening 25), and the inner surfaces (that is, the surfaces facing the back sheet member 23) ) Through the first cover sheet 211 of the core cover sheet 21. The free end 343 of the standing gather part 341 is located further inside than the inner edge in the left-right direction of the side absorbent core 222. In other words, the left and right side portions of the opening 25 of the absorbent sheet member 20 are covered with the standing gathers 341 that extend inward from the side absorbent core 222. As shown in FIG. 1, the pair of standing gathers 341 overlaps both sides of the front absorbent core 221 and the rear absorbent core 223 in a plan view, and in this embodiment, both sides of the rear absorbent core 223 are The first cover sheet 211 of the core cover sheet 21 is joined to the inner surfaces of the pair of upright gathers 341.

  The absorbent core 22 is formed by wrapping a mixture of a hydrophilic fiber such as pulverized pulp fiber or cellulose fiber with a granular water-absorbing polymer (for example, SAP (Super Absorbent Polymer)) with tissue paper or a liquid-permeable nonwoven fabric. Then, moisture that has permeated through the core covering sheet 21 is absorbed and quickly fixed. Tissue paper and liquid-permeable nonwoven fabric wrapping hydrophilic fibers are bonded to the hydrophilic fibers and the water-absorbing polymer with a hot-melt adhesive, and the shape of the hydrophilic fibers is lost and the water-absorbing polymer is dropped (especially, water absorption). Prevent later dropout). In the present embodiment, the absorbent core 22 includes pulp fibers and SAP.

  The core covering sheet 21 is a liquid-permeable sheet material that quickly captures the moisture of excrement from the wearer and moves it to the absorbent core 22. As the core covering sheet 21, for example, a liquid-permeable nonwoven fabric (point bond nonwoven fabric or air-through nonwoven fabric) formed of hydrophobic fibers (polypropylene, polyethylene, polyester, polyamide, nylon, etc.) whose surface is hydrophilically treated with a surfactant. , Spunbonded nonwoven fabric, etc.). In addition, as the core coating sheet 21, a nonwoven fabric (for example, a spunlace nonwoven fabric) formed of hydrophilic fibers such as cellulose, rayon, or cotton may be used.

  As shown in FIG. 1, the core edge 2211 near the opening 25 of the front absorbent core 221 and the front edge 252 on the front absorbent core 221 side of the opening 25 are concave in the longitudinal direction at the center in the left-right direction. (That is, a concave shape in a direction away from the rear absorbent core 223). Further, the core edge 2231 near the opening 25 of the rear absorbent core 223 and the rear edge 253 on the rear absorbent core 223 side of the opening 25 are also concave in the longitudinal direction at the center in the left-right direction (that is, the front absorbent core 221). A concave portion in a direction away from the concave portion. The core edge 2211 of the front absorbent core 221 and the core edge 2231 of the rear absorbent core 223 may overlap the front edge 252 and the rear edge 253 of the opening 25, respectively. In other words, the core edge 2211 of the front absorbent core 221 and the core edge 2231 of the rear absorbent core 223 may be in contact with the opening 25.

  The absorbent sheet member 20 includes a front absorbent core elastic member 241 joined to the front absorbent core 221 along the longitudinal direction in the central region in the left-right direction, and the rear absorbent core 223 along the longitudinal direction in the central region. The rear absorbent core elastic member 243 is provided. In the absorbent sheet member 20, a contraction force in the longitudinal direction acts on the front absorbent core 221 when the front absorbent core elastic member 241 contracts, and a contraction of the rear absorbent core elastic member 243 causes the rear absorbent core 223 to contract. A contraction force in the longitudinal direction acts.

  The front absorbent core 221 is formed with a slit 2212 extending in the longitudinal direction from the core edge 2211 in the central region (that is, a region where there is no pulp fiber or SAP in the front absorbent core 221). It overlaps with the front absorption core elastic member 241. Accordingly, the front absorbent core elastic member 241 is accurately applied to the first cover sheet 211 and the second cover sheet 212 that cover the upper surface and the lower surface of the front absorbent core 221 in the region where the front absorbent core 221 is provided. Joined (see FIG. 2). The rear absorbent core 223 is formed with a slit 2232 extending in the longitudinal direction from the core edge 2231 in the central region, and the slit 2232 overlaps the rear absorbent core elastic member 243. Therefore, precisely, the rear absorbent core elastic member 243 is joined to the first cover sheet 211 and the second cover sheet 212 that cover the upper and lower surfaces of the rear absorbent core 223 in the region where the rear absorbent core 223 is provided. .

  In the front absorbent core 221 and the rear absorbent core 223, the slits 2212 and 2232 are provided as weakening lines having lower rigidity than the surrounding portions, but instead of the slits 2212 and 2232, pulp fibers or the like can be used. A weakening line having a small thickness or a low density such as pulp fibers may be provided so as to overlap the front absorbent core elastic member 241 and the rear absorbent core elastic member 243.

  As shown in FIGS. 1 and 3, the absorbent sheet member 20 has two pairs of side portions (that is, two on the left and right sides) that are disposed along the longitudinal direction on both sides in the left-right direction of the opening 25. A core elastic member 242 is provided. As the side absorbent core elastic member 242, for example, a polyurethane thread, a strip-shaped polyurethane film, a thread-shaped or strip-shaped natural rubber, or the like is used. In this embodiment, a polyurethane thread is used.

  The two pairs of side absorbent core elastic members 242 overlap the pair of side absorbent cores 222 in plan view, and are disposed on the surface of the side absorbent core 222 that faces the backsheet member 23. In the present embodiment, each side absorbent core elastic member 242 is disposed between the side absorbent core 222 and the second cover sheet 212 of the core cover sheet 21, and the side absorbent core 222 and the second cover sheet 212. In the stretched state, the side absorbent core 222 is contracted to be contracted. The front portion of the side absorbent core elastic member 242 in the longitudinal direction overlaps with the front absorbent core 221, and the rear portion overlaps with the rear absorbent core 223.

  As shown in FIGS. 2 to 4, the back sheet member 23 is a very thin water-repellent or liquid-impervious exterior sheet 231 provided on the exterior sheet 231 (that is, the wearer side of the exterior sheet 231). An absorbent sheet 233 and a hydrophilic sheet 232 laminated on the exterior sheet 231 and the absorbent sheet 233 are provided. In FIG. 2 thru | or 4, the absorption sheet 233 is shown with the thick continuous line for convenience of illustration.

  As the exterior sheet 231, a water-repellent or liquid-impervious nonwoven fabric (for example, spunbond nonwoven fabric, meltblown nonwoven fabric, SMS nonwoven fabric) formed of hydrophobic fibers (for example, polypropylene, polyethylene, polyester, polyamide, nylon), A water-repellent or liquid-impervious plastic film, or a laminated sheet obtained by laminating these non-woven fabric and plastic film is used, and the moisture etc. of excreta reaching the back sheet member 23 is Prevent exudation. In this embodiment, a water-repellent or liquid-impervious nonwoven fabric is used as the exterior sheet 231. In addition, when a plastic film is used for the exterior sheet 231, a plastic film having moisture permeability (breathability) is used from the viewpoint of preventing wear of the absorbent article 1 and improving the wearer's comfort. It is preferable.

  The absorbent sheet 233 includes two sheets and a superabsorbent resin layer provided between the two sheets. The superabsorbent resin layer hot-bonds granular water-absorbing polymers such as SAP. It is formed by fixing to two sheets with an agent. As the two sheets, a nonwoven fabric formed from hydrophilic fibers, a nonwoven fabric formed from hydrophilic treated hydrophobic fibers, a tissue, or the like is used. The superabsorbent resin layer (that is, the granular water-absorbing polymer) is arranged in a stripe shape extending in the longitudinal direction between the two sheets. In other words, a region where no water-absorbing polymer exists is provided between each of the plurality of superabsorbent resin layers extending in the longitudinal direction. And a some superabsorbent resin layer is each sealed by joining two sheets in the area | region where a water absorbing polymer does not exist.

  Instead of the absorbent sheet 233, a granular water-absorbing polymer such as SAP is spread on the exterior sheet 231 and adhered to the exterior sheet 231 with a hot melt adhesive or the like, so that the highly absorbent resin layer becomes the exterior sheet 231. It may be formed directly on the top. The hydrophilic sheet 232 is preferably a non-woven fabric (for example, spunlace non-woven fabric) formed of hydrophilic fibers such as cellulose, rayon, or cotton, or a hydrophobic fiber (surface-treated with a surfactant). For example, a liquid-permeable nonwoven fabric formed of polypropylene, polyethylene, polyester, polyamide, nylon) is used.

  In the absorbent article 1, as described above, the outer edge portion of the absorbent sheet member 20 is joined to the back sheet member 23, and the surface of the absorbent core 22 facing the back sheet member 23 is not joined to the back sheet member 23. The Thereby, as shown in FIG. 2 and FIG. 4, the portion corresponding to the front absorbent core 221 of the absorbent sheet member 20 and the back sheet member 23 are arranged between the front absorbent core 221 and the back sheet member 23. A front pocket 26 extending from the opening 25 to the front side in the longitudinal direction is formed between the pair of side absorbent cores 222 and the back sheet member 23 as shown in FIG. A pair of side pockets 28 extending in the direction are formed. As shown in FIG. 4, similarly to the front pocket 26, a rear pocket 27 that extends from the opening 25 to the rear side in the longitudinal direction is formed between the rear absorbent core 223 and the backsheet member 23. The pair of side pockets 28 are continuous with the front pocket 26 and the rear pocket 27.

  In the absorbent article 1 shown in FIG. 1, excrement such as loose stool excreted from the wearer is directed to the back sheet member 23 through the opening 25 and is received by the exposed region 234 of the back sheet member 23. The excrement received in the exposed region 234 moves into the internal space of the front pocket 26, the side pocket 28, and the rear pocket 27 and is accommodated. In the present embodiment, the opening 25 is provided on the rear side of the longitudinal center of the absorbent sheet member 20, and the front absorbent core 221 is longer than the rear absorbent core 223 as described above. . For this reason, the length of the front pocket 26 in the longitudinal direction is larger than the length of the rear pocket 27 in the longitudinal direction, and the front pocket 26 becomes a main pocket mainly containing excrement.

  As described above, in the absorbent article 1, the pair of tension members 5 is provided on the pair of side sheets 3. Each tension member 5 is a belt-like member extending in the longitudinal direction of the main body 2. As shown in FIG. 3, each of the pair of tension members 5 has a structure in which three tension portion elastic members 52 are joined by a hot-melt adhesive or the like between two layers of belt-shaped nonwoven fabric 51. The three elastic elastic members 52 extending in the horizontal direction are arranged at approximately equal intervals in the left-right direction. The tension portion elastic member 52 is joined to the nonwoven fabric 51 in a state of being stretched in the longitudinal direction and contracted together with the nonwoven fabric 51, whereby the pair of tension members 5 has stretchability (that is, elasticity) in the longitudinal direction. . In the state where the tension member 5 is pulled, the total length in the longitudinal direction of the tension member 5 is substantially equal to the total length in the longitudinal direction of the main body 2 and the side sheet 3. As will be described later, since the tension member 5 is not joined to the side sheet 3 at the front portion 201, the illustration of the tension member 5 is omitted in FIG.

  FIG. 5 is a view showing the joining region between the tension member 5 and the side sheet 3 with parallel oblique lines. As shown in FIG. 5, the portion on the rear end side in the longitudinal direction of the tension member 5 opens from the rear edge of the side seat 3 (that is, the edge of the longitudinal end located on the rear portion 203 of the main body 2). It joins by the hot-melt-adhesive etc. over the part located in the right and left both sides of 25. In the following description, the part joined to the side sheet 3 of the tension member 5 is referred to as a “tensile member fixing portion 53”. The tension member fixing portions 53 of the pair of tension members 5 are bonded to the upper surface, which is the surface opposite to the surface to which the side absorbent cores 222 of the pair of standing gathers 341 are bonded, on both sides of the opening 25 in the left-right direction. Is done. The inner edges in the left-right direction of the pair of tension member fixing portions 53 substantially overlap the free ends 343 that are the inner edges of the pair of upright gathering portions 341, and the pair of tension members 5 are located on the left and right sides of the opening 25. The part is covered together with the pair of upright gathers 341. Note that the joining of the tension member fixing portion 53 to the side sheet 3 may be performed by heat sealing or ultrasonic pressure bonding.

  A portion of the tensile member 5 on the front side of the tensile member fixing portion 53 (that is, a portion on the front end side in the longitudinal direction) is not joined to the side sheet 3 and other configurations. The portion to be formed is referred to as “tensile member free portion 54”. A substantially rectangular fastening portion 55 is provided at the tip of the tension member free portion 54. The fastening portion 55 is a hook member of a hook-and-loop fastener, and faces the side seat 3 in a state where the tension member free portion 54 is disposed on the side seat 3 as shown in FIG. It is fixed.

  When the absorbent article 1 is used, as shown in FIG. 6, the tension member free portions 54 of the pair of tension members 5 are outside in the left-right direction and forward (that is, the direction corresponding to the front side of the wearer). It is pulled to. The tension member free part 54 in the stretched state is folded back to the side opposite to the wearer beyond the side edge of the main body part 2 (also the side edge of the back sheet member 23). A fastening portion 55 provided at the distal end portion is fastened to the outer surface of the exterior sheet 231 (see FIG. 2) of the back sheet member 23 at the front portion 201. As described above, since the fastening portion 55 is a hook member of a hook-and-loop fastener and the exterior sheet 231 is a non-woven fabric, the fastening portion 55 can be detachably joined to the exterior sheet 231 that is the outer surface of the backsheet member 23. It is. In a state where the fastening portion 55 of the tension member free portion 54 is joined to the back sheet member 23, the pair of tension members 5 extends outward and forward in the left-right direction from the joining position with the pair of raised gather portions 341. The portion of the pair of standing gathers 341 near the opening 25 (particularly, the portion located on both the left and right sides of the opening 25) is pulled outward and forward in the left-right direction due to the contraction force of the tension member free portion 54, Is done.

  As described above, in the absorbent article 1, the pair of side absorbent cores 222 shown in FIG. 3 are disposed on the inner surfaces of the pair of raised gathers 341 (that is, the surfaces facing the back sheet member 23) via the core covering sheet 21. Are joined. For this reason, when the pair of standing gather elastic members 32a and the other pair of standing gather elastic members 32b contract, the standing gathers 341 rise and the side absorbent core 222 becomes larger than the back sheet member 23. Separate. Thereby, the distance in the thickness direction between the absorbent sheet member 20 and the back sheet member 23 in the vicinity of the opening 25 can be maintained large.

  In the absorbent article 1, as shown in FIG. 6, a portion in the vicinity of the opening 25 of the pair of standing gathers 341 is pulled in the left-right direction by the pair of tension members 5. Thereby, the side part absorption core 222 is pulled up with the standing gather part 341, and is further spaced apart from the back seat | sheet member 23 further. Further, the portions near the opening 25 of the front absorbent core 221 and the rear absorbent core 223 formed integrally with the side absorbent core 222 are also largely separated from the backsheet member 23. As a result, the internal spaces of the front pocket 26, the side pocket 28, and the rear pocket 27 can be easily enlarged, and the excrement can be securely accommodated and held in these pockets. It is prevented that it adheres to a wearer's skin over a wide range.

  In this way, the absorbent article 1 can reliably contain and hold excrement despite covering only a relatively narrow range of the wearer's skin, so that it is inside the exterior article such as a disposable diaper. It is particularly suitable for auxiliary absorbers that are attached and easily replaceable.

  By the way, since the wearer of the absorbent article 1 often takes a posture such as a supine position, a lateral position or a sitting position, almost no body pressure is applied to the front side of the wearer. In the absorbent article 1, as described above, the front pocket 26 formed between the front absorbent core 221 and the back sheet member 23 arranged on the front side of the wearer mainly stores excrement. A pocket. Therefore, it can be said that the absorbent article 1 is particularly suitable for accommodating excrement from a wearer who takes a posture such as a supine position, a lateral position or a sitting position.

  In the absorbent article 1, the tension member fixing portion 53 that is one end of the belt-like tension member 5 is joined to the standing gather portion 341, and the tension member free portion 54 that is the other end is joined to the outer surface of the backsheet member 23. Thus, the standing gathers 341 can be easily pulled outward in the left-right direction. As a result, the side absorbent core 222 and the portions near the openings 25 of the front absorbent core 221 and the rear absorbent core 223 can be easily separated from the backsheet member 23 easily.

  When the absorbent article 1 is worn on a supine wearer, the rear portion 203 of the absorbent article 1 is disposed below the wearer's buttocks. In the absorbent article 1, as described above, since the tension member 5 extends forward from the joining position on the standing gathers 341, the tension member 5 is pulled even in a state where the rear part 203 is disposed below the wearer's buttocks. Thus, it can be easily fixed to the outer surface of the back sheet member 23. Moreover, the position with respect to the wearer of the standing gather part 341 can be adjusted by pulling the tension member free part 54, and the standing gather part 341 can be easily disposed at a position in close contact with the base of the wearer's leg.

  In the absorbent article 1, since the tension member 5 has elasticity (stretchability), the force which pulls the standing gather part 341 of the tension member 5 can be stabilized. Moreover, since the tension member 5 is the strip | belt-shaped nonwoven fabric 51 with which the tension | pulling part elastic member 52 was joined, manufacture of the tension member 5 is easy and manufacturing cost is reduced.

  In the absorbent article 1, by arranging two pairs of side absorbent core elastic members 242 extending in the longitudinal direction on the pair of side absorbent cores 222, a contracting force is applied to the pair of side absorbent cores 222, The side absorption core 222 can be further separated from the back sheet member 23. Further, the side absorbent core 222 can be further separated from the backsheet member 23 by arranging the side absorbent core elastic member 242 on the surface of the side absorbent core 222 facing the backsheet member 23. Note that the absorbent sheet member 20 may be provided with only a pair of side absorbent core elastic members 242. In this case, the pair of side absorbent core elastic members 242 is preferably disposed in the vicinity of the opening 25 in the left-right direction (that is, the side closer to the opening 25 than the center of the side absorbent core 222 in the left-right direction). As a result, the portion in the vicinity of the opening 25 of the side pocket 28 can be further separated from the back sheet member 23.

  In the pair of standing gathers 341, as described above, the pair of standing gathers elastic members 32 c extending in the longitudinal direction are disposed so as to overlap the joining region 344 between the pair of standing gathers 341 and the pair of side absorbent cores 222. By doing so, the standing of the pair of standing gathers 341 can be increased, and the side absorbent core 222 can be further separated from the backsheet member 23.

  In the absorbent article 1, the front absorbent core elastic member 241 and the rear absorbent core elastic member 243 extending in the longitudinal direction are joined to the left and right central regions of the front absorbent core 221 and the rear absorbent core 223 to join the front absorbent core. By applying a contracting force to 221 and the rear absorbent core 223, the central regions of the front absorbent core 221 and the rear absorbent core 223 are greatly separated from the backsheet member 23. Furthermore, slits 2212 and 2232 that overlap the front absorbent core elastic member 241 and the rear absorbent core elastic member 243, respectively, are provided in the center region in the left-right direction of the front absorbent core 221 and the rear absorbent core 223. Since the core 221 and the rear absorbent core 223 are easily deformed so as to be convex toward the wearer, the central regions of the front absorbent core 221 and the rear absorbent core 223 are further separated from the backsheet member 23. As a result, the capacity of the front pocket 26 and the rear pocket 27 is increased.

  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.

  For example, when the exterior sheet 231 of the back sheet member 23 is formed of a plastic film or the like, an adhesive material layer is provided as the fastening portion 55 of the tensile member free portion 54 instead of the hook member of the hook and loop fastener, The tension member free part 54 may be detachably joined to the exterior sheet 231 by the adhesive material layer. Further, the tension member free portion 54 is firmly joined to the outer surface of the back sheet member 23 by a hot melt adhesive or the like beyond the side edge of the back sheet member 23 when the absorbent article 1 is manufactured. The pair of standing gathers 341 may be in a state of being pulled outward in the left-right direction. Even in this case, the standing gathers 341 can be easily pulled outward in the left-right direction by the tension member 5, and the internal spaces of the front pocket 26, the side pocket 28, and the rear pocket 27 can be easily enlarged.

  The tension member 5 does not necessarily have to be pulled outward and forward in the left-right direction. For example, the tension member 5 may be pulled outward in parallel with the left-right direction and fixed to the outer surface of the exterior sheet 231 of the backsheet member 23. Further, the hot melt adhesive extends from the front edge of the side sheet 3 (that is, the longitudinal edge located on the front portion 201 of the main body 2) to the left and right sides of the opening 25. The tension member free portion 54 may be joined to the outer surface of the exterior sheet 231 at the rear portion 203 by being pulled outward and rearward in the left-right direction.

  The tension member 5 does not necessarily have a structure in which the tension portion elastic member 52 is bonded to the nonwoven fabric 51. For example, a stretchable nonwoven fabric having elasticity may be used as the tension member 5. Although it is preferable that both the tension member free part 54 and the tension member fixing part 53 have elasticity from the viewpoint of separating the rear absorption core 223 from the back sheet member 23, the rear absorption core 223 is sufficiently separated from the back sheet member 23. In the case of a large separation, the tension member fixing portion 53 may not be given elasticity. The tension member fixing portion 53 may be provided only on the left and right sides of the opening 310. In the absorbent article 1, a simple nonwoven fabric or plastic film that does not have elasticity may be used as the tension member 5.

  In the above embodiment, the tension member 5 is a belt-like member, but the tension member 5 may be a string-like member. For example, a plurality of elastic yarns extending in the left-right direction and arranged in the longitudinal direction are used as the tension members 5, and the plurality of elastic yarns are directed outward from the inner edge of the side seat 3 on the left and right sides of the opening 25. May be joined together.

  The absorbent core 22 of the main body 2 does not necessarily need to contain pulp fibers, and the absorbent core 22 is obtained by directly bonding SAP to a relatively thick and highly rigid liquid-permeable nonwoven fabric or plastic film with a hot melt adhesive or the like. It may be used as In the absorbent article 1, for example, the front absorbent core 221, the pair of side absorbent cores 222, and the rear absorbent core 223 are individually formed and arranged adjacent to form the opening 25 (that is, the core It may be covered by the core cover sheet 21 (located around the opening of the cover sheet 21).

  In the absorbent article 1, a front pocket 26, a side pocket 28, and a rear pocket 27 may be provided between the absorbent sheet member 20 and the backsheet member 23 in order to increase the capacity for excrement. preferable. However, if sufficient capacity for excreta is secured, only the front pocket 26 and the pair of side pockets 28 which are main pockets are provided between the absorbent sheet member 20 and the back sheet member 23. The rear pocket 27 may be omitted. When the rear pocket 27 is not provided, a portion of the absorbent sheet member 20 on the rear side of the opening 25 is joined to the back sheet member 23 over substantially the entire surface. In this case, the rear absorbent core 223 may be omitted from the absorbent sheet member 20.

  On the other hand, the absorbent article 1 is formed between the rear absorbent core 223 and the back sheet member 23 when the absorbent article 1 is used for a wearer who often takes a body posture in which the body pressure is easily applied to the front side, such as prone position. The rear pocket 27 may be a main pocket. When the rear pocket 27 is a main pocket, the front pocket 26 and the front absorbent core 221 may be omitted.

  In other words, a portion of the absorbent core 22 that is disposed on one of the wearer's front side and rear side (that is, one side of the opening 25 in the longitudinal direction) and forms a main pocket with the back sheet member 23. The pair of side absorbent cores 222, which are referred to as first absorbent cores and form a pair of side pockets 28 with the backsheet member 23, are referred to as a pair of second absorbent cores, and the other on the front and rear sides of the wearer If the part which forms another pocket to which body pressure other than the main pocket and the side pocket 28 is disposed between the back sheet member 23 and the back sheet member 23 is called a third absorbent core, The pocket between the absorbent core and the third absorbent core and the back sheet member 23 may be omitted.

  In the absorbent article 1, the pair of side absorbent cores 222 are joined to the pair of upright gathering parts 341, so that the force generated by the tension member 5 is directly and efficiently transmitted to the absorbent core 22. The internal space of the pocket formed between the sheet member 23 can be made larger. However, the pair of side absorbent cores 222 may be omitted from the absorbent core 22 as long as the internal space of the pocket can be made sufficiently large. That is, the absorbent core 22 only needs to be disposed on at least one side of the opening 25 in the longitudinal direction. Even in this case, the absorbent core 22 is joined to the pair of standing gathers 341 via the core covering sheet 21 around the opening 25, and the pair of standing gathers 341 is moved in the left-right direction by the pair of tension members 5. By being in a state of being pulled outward or in a state of being pulled, the internal space of the pocket formed between the absorbent core 22 and the backsheet member 23 can be easily enlarged.

  In the absorbent sheet member 20, the core cover sheet 21 may be a single sheet member. In this case, the portion covering the wearer side of the absorbent core 22 of the sheet member corresponds to the first cover sheet 211, The part covering the back sheet member 23 side of the absorbent core 22 corresponds to the second covering sheet 212. Moreover, the core coating sheet 21 should just cover the wearer side of the absorption core 22 at least.

  The back sheet member 23 only needs to include at least a water-repellent or liquid-impervious exterior sheet 231, and either one or both of the hydrophilic sheet 232 and the absorbent sheet 233 may be omitted.

  The structure of the above-described absorbent article is, for example, a pants-type disposable diaper having a trunk opening at the upper end and a pair of leg openings at the bottom, in addition to the auxiliary absorbent device attached to the inside of the exterior article, The present invention may be applied to a tape-type disposable diaper in which a part that abuts on the wearer's belly side and a part that abuts on the back side are worn around the waist.

DESCRIPTION OF SYMBOLS 1 Absorbent article 5 Tensile member 20 Absorbent sheet member 21 Core covering sheet 22 Absorbing core 23 Back sheet member 25 Opening 26 Front pocket 27 Rear pocket 28 Side pocket 32a-32c Standing gather elastic member 51 Nonwoven fabric 52 Tensile elastic Member 53 Tension member fixing part 54 Tension member free part 221 Front absorption core 222 Side absorption core 223 Rear absorption core 341 Standing gather part

Claims (9)

An absorbent article that receives excrement from a wearer,
A backsheet member;
An absorbent sheet member that is overlaid on the backsheet member and has an opening at which the outer edge is joined to the backsheet member and facing the crotch portion of the wearer;
A pair of upright gathers that extend in the longitudinal direction on the left and right side portions of the absorbent sheet member, and the elastic members are respectively joined along the longitudinal direction;
A pair of tension members joined to the pair of raised gathers on both sides of the opening in the left-right direction;
With
The absorbent sheet member is
An absorbent core disposed on at least one side of the opening in the longitudinal direction;
A liquid-permeable core coating sheet covering the absorbent core;
With
A pocket extending in the longitudinal direction from the opening is formed between the absorbent core and the backsheet member,
The absorbent core is joined to the pair of raised gathers around the opening via the core covering sheet,
The absorbent article, wherein the pair of standing gathers can be pulled outward in the left-right direction by the pair of tension members, or is in a pulled state. The absorbent article according to claim 1,
Each of the pair of tensile members has a band shape or a string shape, one end is joined to the standing gather portion, and the other end can be joined to the outer surface of the back sheet member beyond the side edge of the back sheet member. Or an absorbent article characterized by being bonded. The absorbent article according to claim 2,
The other end of the pair of tension members can be joined to the outer surface of the backsheet member,
The absorbent article, wherein the pair of tension members extend from a joint position with the pair of standing gathers in a direction corresponding to the front side of the wearer. The absorbent article according to any one of claims 1 to 3,
The absorbent article, wherein the pair of tensile members has elasticity. The absorbent article according to claim 4,
Each of the pair of tensile members is a strip-shaped nonwoven fabric to which an elastic member is bonded. The absorbent article according to any one of claims 1 to 5,
The absorbent core is
A first absorbent core disposed on the one side of the opening in the longitudinal direction;
A pair of second absorbent cores disposed on both sides of the opening in the left-right direction;
With
The absorbent article, wherein the pair of second absorbent cores are joined to the pair of standing gathers via the core covering sheet. The absorbent article according to claim 6,
The absorbent article, wherein the first absorbent core is a front absorbent core disposed on the front side of the wearer. The absorbent article according to claim 7,
The absorbent core further comprises a third absorbent core disposed on the back side of the wearer,
An absorbent article, wherein another pocket is formed between the third absorbent core and the back sheet member. The absorbent article according to any one of claims 1 to 8,
An absorbent article, which is an auxiliary absorbent device attached to the inside of an exterior article worn by a wearer.

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