JP2010284243A - Absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To retain inner space in pockets while suppressing reduction of the capacity of the pockets in an absorbent article having the pockets for storing excrement. <P>SOLUTION: The absorbent article 1 includes: a back sheet member 23; an absorbent sheet member 20 whose outer edge is joined to the back sheet member 23; and a pair of spacer members 241 disposed in the vicinity of an opening 25 of the absorbent sheet member 20 between the back sheet member 23 and the absorbent sheet member 20. As the absorbent sheet member 20 is supported by the spacer members 241, the inner space of a front pocket 26, a side pocket 28, and a rear pocket 27 can be retained in the absorbent article 1. As the spacer members 241 are spirally formed, the excrement such as soft feces can pass through the spacer members 241. As a result, hindrance by the spacer members 241 in storing the excrement in the pockets is prevented, and reduction of the capacity for storing the excrement in the pockets can be suppressed. <P>COPYRIGHT: (C)2011,JPO&INPIT

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 absorbent disposable article of Patent Document 1, the periphery of the topsheet having an opening is joined to a liquid-impervious backsheet, and the soft stool that has passed through the opening is a space between the topsheet and the backsheet. By accommodating the stool, the soft stool is prevented from adhering to the wearer. In Patent Document 1, by providing a substantially annular spacer formed of rubber, a highly dispersed phase emulsion foam, or the like along the periphery of the opening, the shape of the opening is maintained and the top sheet and the back sheet are formed. A technique for maintaining a space between the two is disclosed.

  Patent Document 2 discloses a substantially U-shaped excretion assisting tool in which air is filled and expanded. When the diaper is worn, an excretion assisting tool is inserted between the wearer's buttocks and the diaper, an excretion space is obtained between the diaper and the body, and excrement is accommodated in the excretion space.

JP 7-507703 A JP 2005-144130 A

  By the way, in the absorptive disposable goods of patent document 1, the volume of the space between a surface sheet and a back sheet reduces only by the volume of a spacer, and the accommodation capacity of excrement falls. Further, in the absorbent disposable article, when the annular spacer is strongly sandwiched between the top sheet and the back sheet by the wearer's body pressure or the like, the soft stool contained in the relatively small space surrounded by the spacer is , Cannot move outward from the space. For this reason, soft stool may overflow from the space to the wearer side through the opening, and may adhere to the wearer's skin over a wide range.

  On the other hand, when the excretion assisting device of Patent Document 2 is used, since there is no configuration for separating the soft stool contained in the excretion space and the wearer, the soft stool adheres to the wearer's skin over a wide range. It cannot be prevented.

  The present invention has been made in view of the above problems, and aims to maintain the internal space of the pocket while suppressing a reduction in the capacity of the pocket in an absorbent article provided with a pocket for storing excrement. .

  Invention of Claim 1 is an absorbent article which receives excrement from a wearer, Comprising: A back sheet member and an outer edge part are joined to the said back sheet member, and it overlaps on the said back sheet member. By providing an absorbent sheet member that provides an opening through which the back sheet member is exposed at a position facing the crotch portion of the wearer, and a spacer disposed between the back sheet member and the absorbent sheet member, The absorbent sheet member includes an absorbent core adjacent to the opening and a liquid-permeable core covering sheet that covers the absorbent core, and a pocket that extends from the opening between the absorbent core and the back sheet member. And at least a part of the spacer is located near the opening in the pocket, the spacer has a hole through which excrement can pass, or the bag It has a structure that forms a passage through which excrement can pass between the sheet member or the absorbent sheet member, and the excrement can pass through the spacer, or the excrement can be passed through the spacer. It is possible to lead to the internal space.

  Invention of Claim 2 is an absorbent article of Claim 1, Comprising: The said spacer is joined to the said absorbent sheet member, and is not joined to the said back sheet member.

  Invention of Claim 3 is an absorbent article of Claim 1 or 2, Comprising: The said spacer contains a pair of spacer member located in the right and left of the said opening.

  Invention of Claim 4 is an absorbent article of Claim 3, Comprising: The said absorption core contains the back part absorption core arrange | positioned at the said wearer's back side, The said back part absorption core and the said back | bag A rear pocket that is the pocket or a part of the pocket is formed between the sheet member and the pair of spacer members extend from the left and right of the opening into the rear pocket.

  Invention of Claim 5 is an absorbent article of Claim 3 or 4, Comprising: The said absorption core is arrange | positioned at the right and left of the said opening, and a pair of which overlaps with at least one part of a pair of said spacer member Includes side absorbent core.

  The invention according to claim 6 is the absorbent article according to claim 5, wherein the pocket is between the pair of side absorbent cores and the back sheet member, or one of the pockets. A pair of side pockets, which are parts, are formed, and at least a part of the pair of spacer members is located in the pair of side pockets.

  The invention according to claim 7 is the absorbent article according to any one of claims 3 to 6, wherein the absorbent sheet member is joined to the core covering sheet along the pair of spacer members. A pair of elastic members for applying a contracting force to the pair of spacer members is further provided.

  The invention according to claim 8 is the absorbent article according to any one of claims 1 to 7, wherein the spacer is a cylindrical member having a plurality of holes formed on a side surface.

  The invention according to claim 9 is the absorbent article according to any one of claims 1 to 7, wherein the spacer has a spiral shape.

  The invention according to claim 10 is the absorbent article according to any one of claims 1 to 9, further comprising a pair of side wall portions extending in the longitudinal direction on both left and right side portions of the absorbent sheet member. .

  Invention of Claim 11 is the absorbent article in any one of Claim 1 thru | or 10, Comprising: The said absorption core contains the front part absorption core arrange | positioned at the said wearer's front side, The said front part A front pocket which is the pocket or a part of the pocket is formed between the absorbent core and the backsheet member.

  The invention according to claim 12 is the absorbent article according to any one of claims 1 to 11, wherein the absorbent article is attached to the inside of the exterior article worn by the wearer.

  Invention of Claim 13 is an absorbent article which receives excrement from a wearer, Comprising: An outer edge part is joined to the said back seat | sheet member by being piled up on the said back seat | sheet member and the said back seat | sheet member. An absorbent sheet member that provides an opening through which the back sheet member is exposed at a position facing the crotch portion of the wearer, and is disposed between the back sheet member and the absorbent sheet member, A spacer including a pair of spacer members extending in the longitudinal direction of the back sheet member, and the absorbent sheet member includes an absorbent core adjacent to the opening, and a liquid-permeable core-coated sheet that covers the absorbent core; A pair of elastic members that are joined to the core covering sheet along the pair of spacer members to give a contracting force to the spacer, and the absorbent core and the bar Pocket extending from the opening is formed between the Kushito member.

  According to the first to twelfth aspects of the present invention, it is possible to maintain the interior space of the pocket while suppressing a decrease in the capacity of the pocket. Moreover, in invention of Claim 5, it can prevent that a wearer's skin is strongly pressed with a spacer. Furthermore, in invention of Claim 7, an absorbent article can be easily changed so that a wearer's body may be followed. On the other hand, in the invention of claim 13, the internal space of the pocket can be maintained while the absorbent article is easily deformed along the wearer's body.

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 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 bottom view of a back sheet member. It is sectional drawing which expands and shows a part of absorbent article. It is a top view which shows the other example of a spacer member. It is a top view which shows the other example of a spacer member. It is a top view which shows the other example of a spacer member. It is a top view which shows the other example of a spacer member. It is a top view which shows the other example of a spacer member. It is a top view which shows the other example of a spacer member. It is a longitudinal cross-sectional view which shows the other example of a spacer member. It is a longitudinal cross-sectional view which shows the other example of a spacer member. It is a top view which shows the other example of an absorbent 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. 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 includes a substantially sheet-like main body 2 that is substantially rectangular in plan view, and the left-right direction of the main body 2 (the width direction of the main body 2, The pair of side seats 3 are provided on approximately both sides of the longitudinal direction (that is, the vertical direction in FIG. 1) perpendicular to the horizontal direction. The upper part of the main body 2 in FIG. 1 is a part in contact with the skin on the front side (abdomen side) of the wearer, and the lower part is a part in contact with the skin on the back side (back side) of the wearer.

  2 to 6 are cross-sectional views of the absorbent article 1 cut along a plane perpendicular to the longitudinal direction at positions AA to EE shown in FIG. Moreover, FIG. 7 is sectional drawing which cut | disconnected the absorbent article 1 by the surface perpendicular | vertical to the left-right direction in the position of FF shown in FIG. As shown in FIGS. 2 to 6, each of the pair of side sheets 3 includes a joining portion 33 that is a band-like portion joined to the main body portion 2, and a side wall portion 34 that is continuous with the joining portion 33 and at least partially stands up. And the side wall part elastic member 32 joined to the side wall part 34 along a longitudinal direction is provided. In the present embodiment, the side wall elastic member 32 has three elastic yarns 321 as shown in FIGS. 1 to 6, and one of the three elastic yarns 321 is a wearer of the side wall portion 34. It is joined to the vicinity of the free end, which is the side end.

  In the absorbent article 1, the side sheet 3 is located on the upper side of the main body 2 (corresponding to the upper side in FIGS. 2 to 6) in the lateral direction (that is, the center line of the absorbent article 1 in the lateral direction). The side wall 34 is formed by being folded back to the opposite side, and the side wall 34 is joined to the joint 33 at both ends in the longitudinal direction, as shown in FIGS. In the absorbent article 1, when the side wall part elastic member 32 provided in the side wall part 34 contracts, as shown in FIG. 3 to FIG. A three-dimensional gather is formed that stands up toward the wearer side at the side and abuts near the base of the wearer's foot when worn. Further, the side wall 34 is folded back so as to spread from the inner edge of the joint 33 to the outer side in the left-right direction, so that the three-dimensional gathers are in close contact with each other over a wide range of the wearer's skin in the left-right direction.

  The side sheet 3 is a water-repellent or liquid-impervious nonwoven fabric (for example, a spunbond nonwoven fabric, a melt blown nonwoven fabric, SMS (spunbond, nonwoven fabric), or the like formed of hydrophobic fibers (for example, polypropylene, polyethylene, polyester, polyamide, nylon). Melt blown / spun bond) non-woven fabric) is folded in two along a fold line extending in the longitudinal direction, and the side wall elastic member 32 is sandwiched between the two folded portions. As the side wall elastic member 32, for example, a polyurethane thread, a strip-shaped polyurethane film, a thread-shaped or strip-shaped natural rubber, or the like is used. In the present embodiment, a polyurethane thread is used as the elastic thread 321.

  As shown in FIGS. 1 to 7, the main body 2 is overlapped on the back sheet member 23 and the back sheet member 23 (that is, on the wearer side of the back sheet member 23), and an outer edge portion is formed on the back sheet member 23. Is provided with an absorbent sheet member 20 to be joined. As shown in FIGS. 1, 3, 4, and 7, the center of the absorbent sheet member 20 from the center in the longitudinal direction to the rear side (back side) is opposed to a site from the wearer's crotch to the buttocks. An opening 25 is formed, and the width of the opening 25 in the left-right direction is made smaller than the width of the absorbent article 1. The back sheet member 23 overlaps the opening 25 of the absorbent sheet member 20 (that is, exposed from the opening 25 provided at a position facing the site from the wearer's crotch to the buttocks). And an exposed region 234 that directly faces the region from the heel to the buttocks.

  As shown in FIG. 1, the absorbent sheet member 20 includes an absorbent core 22 adjacent to the opening 25, and the absorbent core 22 is disposed on the wearer's front side (belly side) when the absorbent article 1 is worn. It includes a part absorbent core 221, a pair of side absorbent cores 222 disposed on both sides of the opening 25 in the left-right direction, and a rear absorbent core 223 disposed on the rear side of the wearer. The front absorbent core 221, the side absorbent core 222, and the rear absorbent core 223 are integrally formed continuously in the longitudinal direction of the absorbent sheet member 20 (also the longitudinal direction of the back sheet member 23). In FIG. 1, in order to facilitate understanding of the drawing, the outline of the absorbent core 22 is drawn with a thick broken line, and a parallel oblique line is given to the absorbent core 22. Further, as shown in FIG. 7, the absorbent sheet member 20 has upper and lower surfaces (that is, absorption) of the front absorbent core 221, the side absorbent core 222 (not shown in FIG. 7), and the rear absorbent core 223, respectively. A liquid-permeable core cover sheet 21 is provided to cover the wearer side and the back sheet member 23 side of the core 22.

  The absorbent core 22 of the absorbent sheet member 20 shown in FIG. 1 to FIG. 7 is a mixture of pulverized hydrophilic fibers such as pulp fibers and cellulose fibers and a granular water-absorbing polymer (for example, SAP (Super Absorbent Polymer)). Is wrapped with tissue paper or a liquid-permeable nonwoven fabric, and absorbs moisture that has passed through the core cover sheet 21 to quickly fix it. 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-coated sheet 21 shown in FIGS. 2 to 7 is a liquid-permeable sheet material, for example, a nonwoven fabric formed of hydrophilic fibers, and quickly captures the moisture of excrement from the wearer and absorbs the core 22. Move to. Nonwoven fabrics used as the core covering 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 forming these nonwoven fabrics. In addition, as the core coating sheet 21, a liquid-permeable nonwoven fabric formed of hydrophobic fibers (for example, polypropylene, polyethylene, polyester, polyamide, nylon) whose surfaces are hydrophilically treated with a surfactant may be used.

  As shown in FIG. 1, the longitudinal length of the front absorbent core 221 is approximately equal to the longitudinal length of each of the pair of side absorbent cores 222, and the longitudinal length of the rear absorbent core 223 is The length of the front absorbent core 221 in the longitudinal direction is smaller. Further, the distance in the left-right direction from one outer edge of the pair of side absorbent cores 222 to the other outer edge is approximately equal to the width in the left-right direction of the rear absorbent core 223, and the width in the left-right direction of the front absorbent core 221. Is smaller than the width of the rear absorbent core 223 in the left-right direction. In the absorbent article 1, the lateral width of the front portion of the main body 2 is also smaller than the lateral width of the rear portion of the main body 2.

  In the absorbent article 1, the core edge in the vicinity of the opening 25 of the front absorbent core 221 and the edge on the front absorbent core 221 side of the opening 25 are concave in the longitudinal direction, and the front absorbent core 221 includes a core edge. A slit 2211 extending along the longitudinal direction is formed. Further, the core edge in the vicinity of the opening 25 of the rear absorbent core 223 and the edge on the rear absorbent core 223 side of the opening 25 are approximately parallel to the left-right direction. As shown in FIGS. 2 to 7, the core covering sheet 21 is a first covering sheet 211 that covers the upper surface of the absorbent core 22 (that is, the front absorbent core 221, the pair of side absorbent cores 222, and the rear absorbent core 223). And the 2nd coating sheet 212 which covers the lower surface of the absorption core 22 is provided.

  As shown in FIGS. 1 to 4, the absorbent article 1 includes a spacer 24 disposed in the vicinity of the opening 25 between the back sheet member 23 and the absorbent sheet member 20. It has a pair of spacer member 241 which is located between the side edge of the opening 25 on both the left and right sides and the side edge of the absorbent article 1 and extends in the longitudinal direction. A part of the pair of spacer members 241 overlaps with the pair of side absorption cores 222 in plan view on both the left and right sides of the opening 25, and other portions overlap with the rear absorption core 223 from the side absorption cores 222. It extends to a position (that is, into a rear pocket 27 described later). In FIG. 1, the spacer member 241 is drawn with a thin solid line in order to facilitate understanding of the drawing (the same applies to FIG. 13).

  Each spacer member 241 is a spiral member (that is, a shape of a compression coil spring) formed of a resin such as soft plastic, which is a material that has relatively high flexibility and is not easily crushed when pressure is applied. A strip-shaped non-woven fabric (not shown) thinner than the width (diameter) of the spacer member 241 is joined to a portion of the spacer member 241 facing the absorbent sheet member 20 by a hot melt adhesive or the like. The spacer member 241 is bonded to the second cover sheet 212 of the absorbent sheet member 20 via the strip-shaped nonwoven fabric by a hot melt adhesive or the like, and is not bonded to the back sheet member 23. The spacer member 241 may be bonded to the absorbent sheet member 20 by ultrasonic bonding or thermal fusion. In addition, a strip-like nonwoven fabric that is thinner than the width of the spacer member 241 may be bonded to the portion of the spacer member 241 facing the back sheet member 23 with a hot melt adhesive or the like. In this manner, the band-shaped nonwoven fabric is bonded to the upper and lower sides of the spacer member 241 so that the spacer member 241 can be easily handled.

  As shown in FIGS. 1 to 6, the absorbent sheet member 20 includes a pair of core elastic members 29 extending in the longitudinal direction along the pair of spacer members 241 on both sides of the opening 25 in the left-right direction. As the core elastic member 29, for example, a polyurethane thread, a band-like polyurethane film, a thread-like or belt-like natural rubber, or the like is used. In the present embodiment, each core elastic member 29 is formed of two pieces made of polyurethane. It has an elastic thread 291.

  As shown in FIG. 1, the pair of core portion elastic members 29 overlaps the pair of side absorption cores 222 in a plan view, and the front portion of the core portion elastic member 29 in the longitudinal direction is lateral to the opening 25. To the side of the front absorbent core 221 (that is, up to a position that substantially overlaps both side ends of the front absorbent core 221 in plan view). Further, the rear portion of the core elastic member 29 in the longitudinal direction extends from the side of the opening 25 to a position overlapping the rear absorbent core 223. As shown in FIGS. 1, 3, and 4, at the side of the opening 25, the core elastic member 29 is located at the center of the side absorbent core 222 in the left-right direction or at the opening 25 side from the center (that is, , Inwardly arranged).

  As shown in FIGS. 2 to 6, the pair of core portion elastic members 29 are disposed between the absorbent core 22 and the second cover sheet 212 of the core cover sheet 21 on the surface facing the back sheet member 23 of the absorbent core 22. And bonded to the second covering sheet 212 and the absorbent core 22 in an extended state. In the absorbent article 1, contraction force acts on the pair of spacer members 241 and the pair of side absorption cores 222 in the longitudinal direction when the pair of core elastic members 29 contract. Accordingly, the side absorbent core 222 moves upward and is separated from the back sheet member 23, and the front absorbent core 221 and the rear absorbent core 223 are drawn toward each other, and the front side of the absorbent article 1 and The rear part is deformed so as to follow the wearer. The spacer member 241 also deforms along with the side absorbent core 222 so as to follow the wearer.

  In the absorbent article 1, as shown in FIGS. 3 and 4, the side absorbent core 222 is not joined to the back sheet member 23 on both sides of the opening 25 in the left-right direction, so that a pair of side absorbent cores are formed. A pair of side portions extending from the opening 25 to the left and right between the back sheet member 23 and the back sheet member 23 (that is, between the portions corresponding to the pair of side absorbent cores 222 of the absorbent sheet member 20 and the back sheet member 23). A pocket 28 is formed. A part of the pair of spacer members 241 is disposed in the side pocket 28.

  As shown in FIGS. 2 to 7, the back sheet member 23 is very thin provided on the water-repellent or liquid-impervious exterior sheet 231 and 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 7, 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, melt blown 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. 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 wearer's comfort. Is preferred.

  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.

  As shown in FIGS. 2 to 6, the exterior sheet 231 of the back sheet member 23 is joined to the side end portion of the first covering sheet 211 of the absorbent sheet member 20 on both sides in the left-right direction of the main body 2. Further, the pair of side sheets 3 are joined to the outer surface of the exterior sheet 231 of the back sheet member 23 (that is, the surface opposite to the wearer).

  In the main body 2, the periphery of the front absorbent core 221 of the absorbent sheet member 20 shown in FIG. 1 is joined to the wearer-side surface of the backsheet member 23 except for the opening 25 and its peripheral part. As shown in FIGS. 5 to 7, between the front absorbent core 221 and the backsheet member 23 (that is, between the portion corresponding to the front absorbent core 221 of the absorbent sheet member 20 and the backsheet member 23). A front pocket 26 extending from the opening 25 in the longitudinal direction is formed. Moreover, as shown in FIGS. 2 and 7, the periphery of the rear absorbent core 223 of the absorbent sheet member 20 is joined to the wearer-side surface of the backsheet member 23 except for the opening 25 and its peripheral part. Thus, the rear pocket 27 is formed between the rear absorbent core 223 and the back sheet member 23. In the absorbent article 1 shown in FIG. 1, the front pocket 26 and the rear pocket 27 are continuous with the pair of side pockets 28, and in the following description, the front pocket 26, the pair of side pockets 28, and the rear part The pockets 27 are collectively referred to simply as “pockets”. In other words, the front pocket 26, the pair of side pockets 28, and the rear pocket 27 are each part of the pocket.

  In the present embodiment, the opening 25 is provided from the central portion in the longitudinal direction of the absorbent sheet member 20 to the rear portion, and the front absorbent core 221 is longer than the rear absorbent core 223 as described above. ing. 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.

  As shown in FIG. 6, in the absorbent article 1, the side end portions 235 of the back sheet member 23, together with the core covering sheet 21 and the side sheet 3, are opposite to the wearer on both left and right sides of the front pocket 26. It is folded back inward in the left-right direction on the side, and is fixed on a portion facing the side end portion 235 of the backsheet member 23 by hot melt adhesive, thermocompression bonding, or the like. Hereinafter, the side end portions 235 on both sides in the left-right direction of the back sheet member 23 fixed by a hot melt adhesive or the like are referred to as “folded portions 235”. In the present embodiment, the width of the folded portion 235 in the left-right direction is constant over the entire length in the longitudinal direction.

  FIG. 8 is a bottom view of the back sheet member 23 viewed from the side opposite to the wearer. In FIG. 8, an exposed region 234 that overlaps the opening 25 (see FIG. 1) of the absorbent sheet member 20 is surrounded by a two-dot chain line, and front pockets are respectively located above and below the exposed region 234 in FIG. 8. 26 and a rear pocket 27 are formed, and side pockets 28 are formed on the left and right sides of the exposed region 234. Moreover, in FIG. 8, in order to make an understanding of a figure easy, a parallel diagonal line is attached to the folding | returning part 235. In FIG.

  As shown in FIGS. 5, 6, and 8, the pair of folded portions 235 extending along the longitudinal direction extends from the position overlapping the front pocket 26 to the exposed region 234 in the opening 25 of the backsheet member 23, or It extends to the vicinity of the exposed region 234. In the present embodiment, each folded portion 235 extends from the front end in the longitudinal direction of the front pocket 26 to the vicinity of the boundary between the exposed region 234 and the front pocket 26 (that is, approximately in the longitudinal direction of the front pocket 26). Over the entire length). Further, in the exposed region 234 or on the side thereof, the side end portion of the backsheet member 23 that is folded back to the side opposite to the wearer side is not fixed on the backsheet member 23, as shown in FIG. As it moves away from the pocket 26, it spreads outward in the left-right direction (that is, folding is gradually eliminated). Then, as shown in FIGS. 4 and 8, a pair of fold lines 236 that are continuous from the pair of folded portions 235 are formed on the exposed region 234 or on the lateral side of the exposed region 234.

  The crease 236 is formed on the side edge of the absorbent article 1 (that is, the widest width of the absorbent article 1) on the boundary between the exposed region 234 and the front pocket 26 or on the extension line in the left-right direction of the boundary. Is located on the inner side in the left-right direction with respect to the rear edge). Further, in the front pocket 26, as shown in FIG. 9 in which the left half of FIG. 6 is enlarged, the surface 2351 of the hydrophilic sheet 232 on the opposite side to the wearer of the folded portion 235 is 2 is covered with the cover sheet 212 and is not joined to the surface 213 of the second cover sheet 212 facing the surface 2351. Note that the surface 2351 of the hydrophilic sheet 232 of the folded portion 235 is not necessarily covered by the second covering sheet 212, and is covered by another member (for example, the side sheet 3) continuous from the core covering sheet 21. It may be non-joined with other members.

  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 absorbent article 1, a portion near the opening 25 of the absorbent sheet member 20 is supported by the spacer 24 arranged in the vicinity of the opening 25. Accordingly, 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 is maintained large, and the internal space of the front pocket 26, the side pocket 28, and the rear pocket 27 is opened in the opening 25. It can be maintained in the vicinity. As a result, the excrement can be reliably accommodated and held in the front pocket 26, the side pocket 28, and the rear pocket 27, and the excrement is prevented from adhering to the wearer's skin over a wide range. .

  In addition, as described above, when the spacer member 241 of the spacer 24 is formed in a spiral shape, soft stool or the like is provided between the spacer 24 and the back sheet member 23 and between the spacer 24 and the absorbent sheet member 20. A passage through which the excrement can pass is formed, and the excrement can pass through the spacer 24. Thereby, in the pocket (in this embodiment, the side pocket 28 and the rear pocket 27) in which the spacer 24 is disposed in the internal space, the accommodation of excrement is prevented from being hindered by the spacer 24. A reduction in the capacity of excrement can be suppressed.

  Thus, since the absorbent article 1 can reliably contain and hold excrement despite covering only a relatively narrow area of the wearer's skin, the absorbent article 1 is placed inside an exterior article such as a disposable diaper. It is particularly suitable for auxiliary absorbers that are attached and easily replaceable.

  In the absorbent article 1, the spacer 24 includes a pair of spacer members 241 positioned on the left and right of the opening 25, thereby preventing the inner space of the side pocket 28 from being crushed by the wearer's body pressure. . Further, the pair of spacer members 241 extend from the left and right of the opening 25 to the inside of the rear pocket 27, thereby preventing the inner space of the rear pocket 27 from being crushed by the wearer's body pressure. As a result, excrement such as loose stool can be reliably accommodated in the side pocket 28 and the rear pocket 27, and the side pocket 28 and the rear portion after the excrement is accommodated in the side pocket 28 and the rear pocket 27. Even when body pressure is applied to the pocket 27, the excrement can be prevented from being pushed out from the side pocket 28 and the rear pocket 27 and attached to the wearer's skin.

  Moreover, the rigidity of the site | part of the left-right both sides of the opening 25 of the absorbent article 1 is improved by a pair of spacer member 241 provided in the left-right both sides of the opening 25. FIG. As a result, the shrinkage of the core elastic member 29 and the side wall elastic member 32 prevents the opening 25 of the absorbent sheet member 20 from shrinking in the longitudinal direction, and the size of the opening 25 in the longitudinal direction can be kept large. it can.

  As described above, in the absorbent article 1, the side end portions of the backsheet member 23 are folded back to the opposite side to the wearer side and fixed on the backsheet member 23 on both sides in the left-right direction of the front pocket 26. As a result, a pair of folded portions 235 extending along the longitudinal direction is formed, and the pair of folded portions 235 extends from the front pocket 26 to the exposed region 234 or in the vicinity of the exposed region 234. Thereby, the rigidity in the longitudinal direction of the back sheet member 23 from the front pocket 26 to the exposed region 234 can be improved. As a result, the opening 25 of the absorbent sheet member 20 is further suppressed from contracting in the longitudinal direction due to the contraction of the core elastic member 29 and the side wall elastic member 32, and the size of the opening 25 in the longitudinal direction is more reliably ensured. Greatly maintained.

  In the absorbent article 1, the spacer 24 is bonded to the absorbent sheet member 20 and is not bonded to the back sheet member 23, thereby absorbing more than the thickness of the spacer 24 (that is, the diameter of the spacer member 241). Since the sheet member 20 and the back sheet member 23 can be separated from each other, the capacity of the side pocket 28 and the rear pocket 27 can be increased. However, if the capacity of the side pockets 28 and the rear pockets 27 can be sufficiently secured, the spacer 24 is hot-melted on both the absorbent sheet member 20 and the back sheet member 23 via, for example, the above-described band-shaped nonwoven fabric. You may join by an adhesive agent.

  The absorbent sheet member 20 is provided with a pair of core elastic members 29 extending in the longitudinal direction along the pair of spacer members 241 on both sides of the opening 25 in the left-right direction. And the contraction force is given to the pair of spacer members 241 of the spacer 24 by the contraction of the core elastic member 29, so that the absorbent article 1 can be easily deformed along the wearer's body.

  In the spacer 24, the shape of the spacer member 241 is spiral, so that excrement such as loose stool can easily pass through the spacer 24. Moreover, since the spacer member 241 is easily deformed in various directions according to the posture of the wearer, the absorbent article 1 can be brought into close contact with the wearer regardless of the posture of the wearer.

  In the absorbent article 1, the spacer 24 has a relatively high flexibility and is formed of a resin such as soft plastic which is a material that is not easily crushed when pressure is applied. It is prevented from being pressed. Further, by providing the pair of side absorption cores 222 between the pair of spacer members 241 and the wearer, it is possible to further prevent the wearer's skin from being strongly pressed by the spacer 24. As a result, the wearing feeling of the absorbent article 1 can be improved.

  In the absorbent article 1, a pair of side wall portions 34 extending in the longitudinal direction is provided on the left and right side portions of the absorbent sheet member 20, and the side wall portion 34 is contracted by the side wall portion elastic member 32 to form a three-dimensional gather. Thus, even if a part of the excrement is not accommodated in the front pocket 26, the side pocket 28, and the rear pocket 27, a part of the excrement is leaked from around the wearer's leg. Can be suppressed. In the absorbent article 1, as described above, the pair of spacer members 241 and the pair of side absorbent cores 222 improve the rigidity of the left and right sides of the opening 25, and maintain the size of the opening 25 in the longitudinal direction to be large. be able to. For this reason, the structure of the absorbent article 1 is particularly suitable for an absorbent article that includes side wall portions 34 that contract in the longitudinal direction on both the left and right sides of the opening 25.

  FIG. A to FIG. F is a top view which shows the other preferable example of a spacer member. FIG. A to FIG. Each of the spacer members 241a to 241f shown in F is a cylindrical member having a plurality of holes formed on the side surface. In the present embodiment, tubes or the like formed of Teflon (registered trademark) that have relatively high flexibility and are not easily crushed when pressure is applied are used as the spacer members 241a to 241f. FIG. A circular hole 242a is formed on the side surface of the spacer member 241a shown in FIG. A circular hole 242b larger than the hole 242a is formed on the side surface of the spacer member 241b shown in FIG. FIG. A diamond-shaped hole 242c is formed on the side surface of the spacer member 241c shown in FIG. On the side surface of the spacer member 241d shown in D, a diamond-shaped hole 242d larger than the hole 242c is formed. FIG. A rectangular hole 242e is formed on the side surface of the spacer member 241e shown in FIG. An elliptical hole 242f is formed on the side surface of the spacer member 241f shown in FIG.

  FIG. In the spacer 24 including the spacer member 241a shown in A, since the spacer member 241a has a plurality of holes 242a through which excrement such as soft stool can pass, the excrement is disposed in the internal space of the spacer 24 (that is, a spacer member that is a cylindrical member). The internal space of the spacer member 241 can be guided to the internal space of the spacer member 241 from the side surface on the other side of the spacer member 241. It is possible to guide to the outside of 241 (that is, excrement can pass through the spacer 24).

  In the absorbent article 1 in which a pair of spacer members 241a is provided as the spacer 24 instead of the pair of spacer members 241 (see FIG. 1), the opening of the absorbent sheet member 20 shown in FIG. A region in the vicinity of 25 is supported. Accordingly, 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 is maintained large, and the internal space of the front pocket 26, the side pocket 28, and the rear pocket 27 is opened in the opening 25. It can be maintained in the vicinity. Further, in the absorbent article 1, the excrement can be guided to the internal space of the spacer 24, or the excrement can pass through the spacer 24, whereby the pocket ( In the present embodiment, in the side pocket 28 and the rear pocket 27), the accommodation of the excrement is prevented from being inhibited by the spacer 24, and the reduction in the accommodation capacity of the excrement in the pocket can be suppressed. Furthermore, since the spacer member 241a easily deforms in various directions according to the posture of the wearer, the absorbent article 1 can be brought into close contact with the wearer regardless of the posture of the wearer.

  In the absorbent article 1, the spacers 24 are shown in FIG. B to FIG. Similarly, when the spacer members 241b to 241f shown in F are included, the internal space of the pockets can be maintained while suppressing a reduction in the capacity of the pockets, and the spacer members 241b to 241f are various in accordance with the posture of the wearer. Therefore, the absorbent article 1 can be brought into close contact with the wearer regardless of the posture of the wearer. Further, the spacer member 241 shown in FIG. A to FIG. Since the spacer members 241a to 241f shown in F are easy to manufacture, the manufacturing of the absorbent article 1 including the spacer 24 including these spacer members can be simplified.

  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, the absorbent core 22 is not necessarily required to contain pulp, and a liquid-permeable nonwoven fabric or plastic film in which SAP is directly joined by a hot melt adhesive or the like may be used as the absorbent core 22. In the absorbent article 1, the side end portion of the backsheet member 23 does not necessarily have to be folded to form a folded portion, and the width of the front absorbent core 221 in the left-right direction is the left-right direction of the rear absorbent core 223. May be approximately equal to the width of.

  In the absorbent article 1 according to the above embodiment, the front absorbent core 221, the side absorbent core 222, and the rear absorbent core 223 are integrally formed. For example, the front absorbent core 221, a pair of side parts The absorbent core 222 and the rear absorbent core 223 are each formed separately and arranged adjacent to form the opening 25 (ie, arranged around the opening of the core coating sheet 21) and covered by the core coating sheet 21 May be.

  The spacer 24 has a plurality of holes through which excrement such as loose stool can pass, or has a structure that forms a passage through which excrement can pass with the back sheet member 23 or the absorbent sheet member 20. However, if the excrement can be guided to the internal space of the spacer 24, or if excrement can pass through the spacer 24, it does not necessarily have the above-described shape.

  For example, as shown in a cross section in FIG. 11, a plate-like member (so-called corrugated plate) in which irregularities in the thickness direction of the absorbent article 1 are alternately repeated in the longitudinal direction may be used as the spacer member 241g. . The spacer member 241g is a belt-like member that extends in the longitudinal direction in plan view and has a width approximately equal to the spiral spacer member 241 (see FIG. 1), and is preferably disposed on both the left and right sides of the opening 25. In this case, the space between the lower surface of the convex portion of the spacer member 241g (that is, the portion protruding toward the absorbent sheet member 20) and the back sheet member 23, and the concave portion of the spacer member 241g (that is, the back sheet member 23). A passage through which excrement can pass is formed between the upper surface of the portion projecting toward the absorbent sheet member 20 and the absorbent sheet member 20.

  Moreover, as shown in a cross section in FIG. 12, a strip-shaped flat plate portion 243 that extends in the longitudinal direction joined to the absorbent sheet member 20, and protrudes from the lower surface of the flat plate portion 243 toward the back sheet member 23 and is long. A member including a comb tooth portion 244 having a plurality of comb teeth arranged in the direction (that is, a plurality of rod-like portions arranged intermittently in the longitudinal direction) may be used as the spacer member 241h. In this case, the space between the plurality of comb teeth of the spacer member 241h becomes a passage through which excrement can pass. In other words, the spacer members 241g and 241h are intermittently brought into contact with the absorbent sheet member 20 and / or the back sheet member 23 in the longitudinal direction, so that the spacer members 241g and 241h and the absorbent sheet member 20 and / or the back are in contact with each other. A passage through which excrement can pass is formed between the sheet member 23 and the sheet member 23. The spacer member 241h may be provided with a flat plate in which a plurality of holes are formed instead of the comb tooth portion 244.

  In the absorbent sheet member 20, when the absorbent article 1 can be easily deformed along the wearer's body, the absorbent sheet member 20 extends in the longitudinal direction along the pair of spacer members on both sides in the left-right direction of the opening 25. The pair of core portion elastic members 29 may be omitted. The spacer 24 includes, in addition to a pair of spacer members located on both the left and right sides of the opening 25, for example, a spacer member extending in the left-right direction in the vicinity of the opening 25 in the inner space of the front pocket 26 or the rear pocket 27. Alternatively, these spacer members may be integrally formed as a single U-shaped member continuously. A substantially annular member surrounding the entire periphery of the opening 25 may be used as the spacer 24. From the viewpoint of maintaining a large size in the longitudinal direction of the opening 25, it is preferable that the spacer 24 includes a pair of spacer members positioned on both the left and right sides of the opening 25. However, the size of the opening 25 can be sufficiently maintained. In this case, the pair of spacer members may be omitted, and a spacer 24 may be provided in which at least part of the spacer is located in the vicinity of the opening 25 in the internal space of the front pocket 26 and / or the rear pocket 27.

  The spacer 24 according to the above-described embodiment is formed of a resin such as soft plastic, but if the wearer's skin is not strongly pressed by the spacer 24, a member formed of another material (for example, formed of metal). A coil spring) may be used as the spacer 24. Moreover, if the wearer's skin is not strongly pressed by the spacer 24, the side absorbent core 222 may be omitted from the absorbent sheet member 20.

  FIG. 13 is a plan view showing another preferred example of the absorbent article. In the absorbent article 1a shown in FIG. 13, the size of the opening 25a in the longitudinal direction is smaller than the opening 25 (see FIG. 1) of the absorbent article 1, and the sizes of the rear absorbent core 223a and the rear pocket 27a in the longitudinal direction. However, it is larger than the rear absorbent core 223 and the rear pocket 27 (see FIG. 1) of the absorbent article 1. Moreover, the width | variety of the left-right direction of the opening 25a is larger than the opening 25 of the absorbent article 1, and a side part absorption core is not provided in the right and left of the opening 25a.

  In the absorbent article 1a, a pair of spacer members 241 (that is, spiral members) of the spacer 24 extend from the side pockets 28a on both the left and right sides of the opening 25 to the inside of the rear pockets 27a. The internal space of the side pocket 28a and the rear pocket 27a can be maintained while suppressing a reduction in the capacity of the pocket 28a and the rear pocket 27a.

  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 the capacity for excrement is sufficiently secured, for example, only the front pocket 26 and the side pocket 28 are provided between the absorbent sheet member 20 and the back sheet member 23, and the rear pocket 27 is It may be omitted. When the rear pocket 27 is not provided, the spacer 24 is not provided on the rear side of the opening 25, and is provided only on the left and right sides of the opening 25, or from the left and right sides of the opening 25 to the inside of the front pocket 26. Moreover, the site | part of the back side rather than the opening 25 of the absorptive sheet member 20 is joined to the back seat | sheet member 23 over the whole surface. In this case, the rear absorbent core 223 may be omitted from the absorbent sheet member 20.

  In the absorbent article 1, for example, only the rear pocket 27 and the side pocket 28 may be provided, and the front pocket 26 and the front absorbent core 221 may be omitted. Alternatively, the side pocket 28 may be omitted and only the rear pocket 27 may be provided, or the front pocket 26 and the rear pocket 27 may be omitted and only the side pocket 28 may be provided. In other words, in the absorbent article 1, the pockets extending from the opening 25 between the absorbent core 22 adjacent to the opening 25 and the back sheet member 23 are the front pocket 26, the pair of side pockets 28, and the rear pocket 27. The spacer 24 is disposed in the vicinity of the opening 25 in the internal space of the pocket.

  In the absorbent article 1, a spacer including a pair of spacer members disposed between the back sheet member 23 and the absorbent sheet member 20 and extending in the longitudinal direction of the back sheet member 23 on the left and right of the opening 25, and the pair The absorbent article 1 is attached to the wearer's body while maintaining the internal space of the pocket by including a pair of core portion elastic members 29 that are bonded to the core cover sheet 21 along the spacer member and impart a contracting force to the spacer. It can be easily deformed along.

  In the absorbent sheet member 20, the core cover sheet 21 may be a single sheet member, and 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 an open-type disposable diaper in which a part that abuts on the abdomen side of a wearer and a part that abuts on the back side are fastened and worn around the waist.

DESCRIPTION OF SYMBOLS 1,1a Absorbent article 20 Absorbent sheet member 21 Core covering sheet 22 Absorbing core 23 Back sheet member 24 Spacer 25, 25a Opening 26 Front pocket 27, 27a Rear pocket 28, 28a Side pocket 29 Core elastic member 34 Side wall Part 221 Front absorbent core 222 Side absorbent core 223, 223a Rear absorbent core 241, 241a-241h Spacer member 242a-242f Hole

Claims (13)

An absorbent article that receives excrement from a wearer,
A backsheet member;
An absorptive sheet member that is provided on a position facing the crotch portion of the wearer by overlapping an outer edge of the backsheet member and joining an outer edge portion to the backsheet member;
A spacer disposed between the back sheet member and the absorbent sheet member;
With
The absorbent sheet member is
An absorbent core adjacent to the opening;
A liquid-permeable core coating sheet covering the absorbent core;
With
A pocket extending from the opening is formed between the absorbent core and the backsheet member,
At least a portion of the spacer is located near the opening in the pocket;
The spacer has a hole through which excrement can pass, or has a structure that forms a passage through which excrement can pass between the back sheet member or the absorbent sheet member, and the spacer An absorbent article, wherein the excrement is allowed to pass through or the excrement can be guided to an internal space of the spacer. The absorbent article according to claim 1,
The absorbent article, wherein the spacer is bonded to the absorbent sheet member and is not bonded to the back sheet member. The absorbent article according to claim 1 or 2,
The absorbent article, wherein the spacer includes a pair of spacer members located on the left and right of the opening. The absorbent article according to claim 3,
The said absorption core contains the rear part absorption core arrange | positioned at the said wearer's back side, Between the said rear part absorption core and the said back seat | sheet member, it is the said pocket, or the rear part which is a part of the said pocket Pockets are formed,
The absorbent article, wherein the pair of spacer members extend from right and left of the opening into the rear pocket. The absorbent article according to claim 3 or 4,
The absorbent article, comprising: a pair of side absorbent cores disposed on the left and right of the opening and overlapping at least a part of the pair of spacer members. The absorbent article according to claim 5,
Between the pair of side absorption cores and the backsheet member, a pair of side pockets that are the pockets or are part of the pockets are formed,
The absorbent article, wherein the at least part of the pair of spacer members is located in the pair of side pockets. The absorbent article according to any one of claims 3 to 6,
The absorbent article further comprising a pair of elastic members that are joined to the core cover sheet along the pair of spacer members to give a contraction force to the pair of spacer members. The absorbent article according to any one of claims 1 to 7,
The absorbent article, wherein the spacer is a cylindrical member having a plurality of holes formed on a side surface. The absorbent article according to any one of claims 1 to 7,
An absorbent article, wherein the spacer has a spiral shape. An absorbent article according to any one of claims 1 to 9,
An absorbent article further comprising a pair of side wall portions extending in the longitudinal direction on both left and right side portions of the absorbent sheet member. The absorbent article according to any one of claims 1 to 10,
The absorbent core includes a front absorbent core disposed on the front side of the wearer;
An absorbent article, wherein a front pocket that is the pocket or a part of the pocket is formed between the front absorbent core and the backsheet member. The absorbent article according to any one of claims 1 to 11,
An absorbent article, which is an auxiliary absorbent device attached to the inside of an exterior article worn by a wearer. An absorbent article that receives excrement from a wearer,
A backsheet member;
An absorptive sheet member that is provided on a position facing the crotch portion of the wearer by overlapping an outer edge of the backsheet member and joining an outer edge portion to the backsheet member;
A spacer including a pair of spacer members disposed between the back sheet member and the absorbent sheet member and extending in the longitudinal direction of the back sheet member on the left and right of the opening;
With
The absorbent sheet member is
An absorbent core adjacent to the opening;
A liquid-permeable core coating sheet covering the absorbent core;
A pair of elastic members joined to the core covering sheet along the pair of spacer members to give a contracting force to the spacer;
With
An absorbent article, wherein a pocket extending from the opening is formed between the absorbent core and the backsheet member.

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