JP2016209125A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article, when an auxiliary absorber is combinedly used, capable of preventing lateral leakage of urine or the like by favorably receiving the urine or the like excreted from a wearer by the auxiliary absorber.SOLUTION: An absorbent article 1 includes a top sheet 2, a back sheet 3, and an absorbent core 4 disposed therebetween. The top sheet 2 includes first flaps 5 that are provided at one side and the other side in the width direction x, that include, in the longitudinal direction y, a central area, end-part areas, and intermediate areas located therebetween, and that are formed tiltably outward in the width direction x. Each first flap 5 includes a first elastic member 6 extending in the longitudinal direction y. In the outer surface of the first flap 5, the central area is bonded to the top sheet 2 at a central bonding part, the end-part areas are bonded to the top sheet 2 at end-part bonding parts, and the intermediate areas are bonded to the top sheet 2 at intermediate bonding parts. The end-part bonding parts and the central bonding part are located outward in the width direction x with respect to the intermediate bonding parts.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an absorbent article that can be suitably used by providing an auxiliary absorbent on the skin surface side.

  Conventionally, a method in which a separate absorbent article (auxiliary absorbent body) is disposed and used on the skin surface side of an absorbent article such as a disposable diaper is known. According to such a method of use, since the auxiliary absorber first receives urine excreted from the wearer, only the auxiliary absorber is replaced as appropriate, and a disposable diaper or the like attached to the outside is used. By continuing to do so, it becomes possible to reduce the total use cost for the absorbent article. In addition, by exchanging only the auxiliary absorbent body, a caregiver or the like can easily perform the replacement work as compared with the case of replacing a disposable diaper or the like attached to the outside of the auxiliary absorbent body.

  For example, Patent Literatures 1 to 3 disclose various absorbent articles as absorbent articles suitable for use with the auxiliary absorber. These absorbent articles have been devised in order to use an auxiliary absorber together. For example, in the absorbent article disclosed in Patent Document 1, at least a pair of side flaps are formed, and the first At least a pair of side pockets are formed on the side flaps on the outer side of the standing line of the three-dimensional gather. The absorbent article disclosed in Patent Document 2 includes a pair of left and right belt-like supports and a connecting sheet in which left and right edge portions respectively join the pair of left and right belt-like supports. The absorbent article disclosed in Patent Document 3 includes a first flap provided on the skin side surface of the absorbent body so as to extend in the front-rear direction, and a second flap provided on the skin side surface of the absorbent body so as to extend in the front-rear direction. have.

JP 2007-000190 A International Publication No. 2014/057571 JP 2014-124509 A

  As described above, conventionally, various absorbent articles suitable for use with an auxiliary absorber are known. However, when using the auxiliary absorber, urine excreted from the wearer is assisted as much as possible. It is desired that the urine or the like is prevented from overflowing into a disposable diaper or the like that is absorbed by the absorbent body and attached to the outside of the auxiliary absorbent body. In this respect, the conventional absorbent article has room for improvement.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an absorbent article that can suitably receive urine excreted from a wearer with an auxiliary absorber when the auxiliary absorber is used in combination. It is to provide.

  The absorbent article of the present invention capable of solving the above problems is an absorbent article having a top sheet, a back sheet, and an absorbent core disposed therebetween, and having a front-rear direction and a width direction. The top sheet has a central region and an end region in the front-rear direction and an intermediate region located between them on one side and the other side in the width direction, and tilts outward in the width direction. The formed first flap is provided; the first flap is provided with a first elastic member extending in the front-rear direction; the outer surface of the first flap is joined to the top sheet at the center region at the center joint, The joint region is joined to the top sheet at the end joint, the middle region is joined to the top sheet at the middle joint; the end joint is located outward in the width direction from the middle joint, and the central joint Is located outward in the width direction from the intermediate joint Having the features in place. In the absorbent article of the present invention, the first elastic member is intermittently provided in the central region instead of, or in addition to, the central joint portion being provided outside the intermediate joint portion in the width direction. May be.

  The absorbent article of the present invention is formed such that the center joint portion of the outer side surface of the first flap is positioned outward in the width direction from the intermediate joint portion, or the first elastic member is the center region of the first flap. As a result, the rising of the central region of the first flap is suppressed more than the intermediate region. For this reason, when the auxiliary absorber is placed on the first flap, the auxiliary flap is easily formed in a concave shape in the cross section in the width direction by the first flap formed so as to tilt and rise outward in the width direction. In addition, since the rise of the central region of the first flap is suppressed, the auxiliary absorber is easily formed in a concave shape in the cross section in the front-rear direction. As a result, the auxiliary absorbent placed on the first flap can suitably receive urine etc. excreted from the wearer, and it is difficult for urine etc. to overflow from the auxiliary absorbent, so that urine etc. assists. It will be suitably absorbed by the absorber.

  The first flap is preferably provided with a plurality of first elastic members arranged in the width direction. By providing the first elastic member in this manner, even if the auxiliary absorber is placed on the first flap, the first flap is less likely to be crushed by the auxiliary absorber, and the auxiliary absorber is brought closer to the wearer's skin. It becomes easy to lift.

  The first flap is preferably provided such that the distance between the upright base in the intermediate region of the first flap on one side and the upright base in the intermediate region of the first flap on the other side is 60 mm or less. By providing the first flap in this manner, the first flap on one side and the first flap on the other side are provided sufficiently close to each other, and the auxiliary absorber can be easily placed on the first flap. Moreover, it becomes easy to lift an auxiliary | assistant absorber close to a wearer's skin with a 1st flap.

  The absorbent article is provided with a second flap formed so as to tilt inward in the width direction outside the first flap in the width direction, and the second flap has a second elasticity extending in the front-rear direction. It is preferable that a member is provided. By providing the second flap, even if urine or the like overflows from the auxiliary absorbent body placed on the first flap, the second flap can serve as a leak-proof wall to prevent side leakage.

  In the first flap and the second flap, the distance between the standing base in the intermediate region of the first flap and the rising base of the second flap is such that the first base in the intermediate region of the first flap on the one side and the first on the other side. It is preferable to be provided so as to be longer than the distance from the upright base in the intermediate region of the flap. By providing the first flap and the second flap in this way, when the auxiliary absorbent is placed on the first flap, the auxiliary absorbent can be placed closer to the wearer's skin. In addition, since the second flap is provided on the outer side in the width direction of the absorbent article, even if urine or the like overflows from the auxiliary absorbent body, side leakage of urine or the like is effectively prevented by the second flap. Become so.

  The absorbent article is further provided with a third elastic member extending in the front-rear direction between the upright base in the intermediate region of the first flap on the one side and the upright base in the intermediate region of the first flap on the other side. It is preferable. By providing the third elastic member, the upright base portion, which is the starting point of the first flap, is lifted toward the wearer's skin, and the entire first flap is formed so as to approach the wearer's skin. Therefore, it becomes easy to lift the auxiliary absorber closer to the wearer's skin.

  According to the absorbent article of the present invention, when the auxiliary absorber is placed on the first flap, the first flap formed so as to tilt and rise outward in the width direction causes the auxiliary absorber to move in the width direction. The cross section of the auxiliary absorber is easily formed in a concave shape, and the rise of the central region of the first flap is suppressed, so that the cross section in the front-rear direction of the auxiliary absorbent body is also easily formed in a concave shape. Therefore, when the auxiliary absorber is placed on the first flap, the urine excreted from the wearer can be suitably received by the auxiliary absorber, and the urine or the like hardly overflows from the auxiliary absorber. Thus, urine and the like are suitably absorbed by the auxiliary absorber.

An example of the absorbent article of this invention is represented, and the top view which looked at the absorbent article from the skin surface side is represented. II-II sectional drawing of the absorbent article shown in FIG. 1 is represented. In FIG. 2, the usage example of the absorbent article in the state which mounted the auxiliary absorber on the absorbent article is represented. The other example of the absorbent article of this invention is represented, and the top view which looked at the absorbent article from the skin surface side is represented. The top view of the sheet | seat which comprises the 1st flap of the absorbent article shown in FIG. 4 is represented. The VI-VI sectional view of the absorptive article shown in Drawing 4 is expressed.

  The absorbent article of the present invention has a top sheet, a back sheet, and an absorbent core disposed therebetween, and is formed on the skin surface side of the top sheet so as to tilt outward in the width direction. One flap is provided. The absorbent article of the present invention is preferably used by disposing a separate absorbent article (hereinafter referred to as “auxiliary absorbent”) on the first flap, and the first flap. Thus, the auxiliary absorber is lifted toward the wearer's skin so that urine excreted from the wearer can be suitably received by the auxiliary absorber. As an aspect of the absorbent article of the present invention, a disposable diaper, a urine pad and the like are shown, and preferably applied to a disposable diaper.

  The absorbent article has a front-rear direction and a width direction. The front-rear direction of the absorbent article means a direction extending in the front-rear direction of the wearer's crotch when the wearer wears the absorbent article. The width direction of the absorbent article means a direction that is on the same plane as the absorbent article and is orthogonal to the front-rear direction. The skin side of the absorbent article means the side facing the wearer's skin when the absorbent article is worn, and the outer surface side of the absorbent article is the wearer when wearing the absorbent article. Means the opposite side.

  The shape of the absorbent article is not particularly limited. When the absorbent article is a urine pad, the shape of the absorbent article includes a substantially rectangular shape, an hourglass shape, a gourd shape, and the like.

  When the absorbent article is a disposable diaper, the absorbent article includes, for example, a front abdomen, a back part, and a crotch portion disposed between them and provided with an absorbent core. As a disposable diaper, for example, an absorbent main body in which an absorbent core is arranged between a top sheet and a back sheet on the skin side surface of an exterior member composed of a front part, a back part, and a crotch part located between them. It may be provided. At this time, a substantially rectangular shape or the like is shown as the shape of the absorbent main body. Moreover, as a disposable diaper, the laminated body by which the absorptive core was distribute | arranged between the top sheet | seat and the back sheet | seat may form a front part, a back part, and a crotch part located among these. In addition, a front part corresponds to the part which contacts a wearer's belly side when wearing a disposable diaper, and a back part corresponds to the part which contacts a wearer's back side when wearing a disposable diaper. A crotch part is located between a front part and a back part, and is corresponded to the part which hits a wearer's crotch.

  When the absorbent article is a disposable diaper, the disposable diaper is an open type (tape type) disposable diaper in which a fastening member is provided on the left and right side ends of the back portion and is formed into a pants shape when worn by the fastening member. Or a pants-type disposable diaper in which a waist opening and a pair of leg openings are formed.

  The top sheet is a sheet located on the wearer side when the absorbent article is worn, and is preferably liquid permeable. As the top sheet, for example, a nonwoven fabric formed from hydrophilic fibers such as cellulose, rayon, and cotton, and a hydrophobic property such as polyolefin (eg, polypropylene, polyethylene), polyester (eg, PET), polyamide (eg, nylon), etc. A non-woven fabric formed from fibers, in which the surface of hydrophobic fibers is hydrophilized with a surfactant, can be used. As the top sheet, a woven fabric, a knitted fabric, a perforated plastic film, or the like may be used.

  The back sheet is a sheet located on the side opposite to the wearer when the absorbent article is worn, that is, on the outside, and is preferably liquid-impermeable. As the back sheet, a non-woven fabric formed from hydrophobic fibers such as polyolefin (for example, polypropylene, polyethylene), polyester (for example, PET), polyamide (for example, nylon), a plastic film, or the like can be used. Moreover, you may use the laminated body of a nonwoven fabric and a plastic film. In the present invention, the liquid impermeability includes the meaning of water repellency.

  The exterior member may be liquid permeable or liquid impermeable, and a sheet material that can be used for a top sheet or a back sheet can be used. The exterior member is preferably formed by laminating an outer sheet on an inner sheet, and more preferably formed by laminating a liquid-impermeable outer sheet on a hydrophilic inner sheet.

  When using a nonwoven fabric as each sheet material demonstrated above, it is preferable to use a spunbond nonwoven fabric, an air through nonwoven fabric, a point bond nonwoven fabric, a melt blown nonwoven fabric, an airlaid nonwoven fabric, an SMS nonwoven fabric, etc. as a nonwoven fabric.

  The absorbent core is not particularly limited as long as it includes an absorbent material that can absorb excrement such as urine. As an absorptive core, the molded object which shape | molded the absorptive material in the predetermined shape can be used, for example. The absorbent core may be covered with a sheet member such as a paper sheet (for example, tissue paper or thin paper) or a liquid-permeable nonwoven fabric. Examples of the absorbent material contained in the absorbent core include hydrophilic fibers such as cellulose fibers (for example, pulverized pulp fibers), polyacrylic acid-based materials, polyaspartic acid-based materials, cellulose-based materials, starch-acrylonitrile-based materials, and the like. Water-absorbing resin etc. are mentioned. Further, the absorbent material may include a heat-fusible fiber such as a polyolefin fiber such as polyethylene or polypropylene, a polyester fiber such as PET, or a polyamide fiber such as nylon. These heat-fusible fibers may be subjected to a hydrophilic treatment with a surfactant or the like in order to increase the affinity with body fluid such as urine.

  It is preferable that an absorptive material contains a hydrophilic fiber from the point which improves the absorption speed | rates, such as urine. Moreover, it is preferable that an absorptive material contains a water absorbing resin from the point which raises absorption capacity. Therefore, it is preferable that an absorptive core contains a hydrophilic fiber (especially pulp fiber) and a water absorbing resin. In this case, it is preferable to use, for example, a mixture of hydrophilic fibers mixed or dispersed in an aggregate of hydrophilic fibers.

  The absorbent core may be a sheet-like absorber. Examples of the sheet-like absorber include those formed so as to have a water-absorbing resin between nonwoven fabrics and have no pulp fibers. Since the sheet-like absorbent body thus formed has a water-absorbing resin between the nonwoven fabrics, a high absorption capacity can be realized. Moreover, since a sheet-like absorber does not have pulp fibers between nonwoven fabrics, it can be formed thin without being bulky.

  As a sheet-like absorber, a water-absorbing fiber may be used as an absorbent material. Also in this case, the sheet-like absorbent body is not bulky and is formed thin. Examples of the water-absorbing fiber include a fiber containing a protonated or salt-formed carboxyl group. For example, as disclosed in JP-B-52-42916, water-absorbing fibers can be obtained by hydrolyzing acrylic fibers and converting nitrile groups contained in the acrylic fibers into carboxyl groups. At this time, it is preferable that the carboxyl group contained in the water-absorbing fiber forms an alkali metal salt or an ammonia salt. Moreover, a water absorbing fiber can be manufactured by immersing a hydrophilic fiber in acrylic acid and precipitating acrylic acid on the fiber surface.

  The shape (planar shape) of the absorbent core is not particularly limited. The shape of the absorbent core may be appropriately determined according to the application, and examples thereof include a substantially rectangular shape, an hourglass shape, a gourd shape, and a battledore shape.

  The top sheet is provided with first flaps formed so as to tilt outward in the width direction on one side and the other side in the width direction of the absorbent article. The first flap may be liquid permeable or liquid impermeable. The first flap is provided with an elastic member extending in the front-rear direction, and the first flap is formed to rise toward the wearer's skin by the contraction force of the elastic member. Hereinafter, the elastic member provided in the first flap is referred to as a “first elastic member”.

  The absorbent article of the present invention is used by placing the auxiliary absorbent body on the first flap formed as described above, so that the outer side portion in the width direction of the auxiliary absorbent body is more worn than the inner side portion in the width direction. The auxiliary absorber is easily formed in a concave shape in the cross section in the width direction.

  The first flap has an upright base portion that serves as a starting point for rising and a free end that serves as a rising tip. A 1st flap contains the part (namely, standing part) from the standing base part to a free end among the sheet | seat members which comprise a 1st flap (namely, standing part) The outer side of the width direction from the standing base part located in the innermost part of the width direction It corresponds to the part in That is, a boundary line extending in the front-rear direction is drawn on the seat member constituting the first flap in the upright base portion located in the innermost part in the width direction, and is located on the outer side in the width direction with respect to the boundary line and is a free end. A portion including is considered as the first flap.

  The first flap has a central region, an end region, and an intermediate region located therebetween in the front-rear direction. The end region is a region including an end portion of the first flap in the front-rear direction, and includes a front end region and a rear end region. The intermediate region is a region located between the central region and the end region, and is formed between the front intermediate region formed between the central region and the front end region, and between the central region and the rear end region. And a rear intermediate region. That is, the first flap has a front end region, a front intermediate region, a central region, a rear intermediate region, and a rear end region in order from the front side in the front-rear direction.

  The length of the central region, the end region, and the intermediate region (the length with respect to the front-rear direction) is not particularly limited. For example, when the front end is 0% and the rear end is 100% relative to the front-rear direction of the first flap, the front end region is in the region of 0% to 25%, and the central region is 40% to 60%. %, And the rear end region may be in the region of 75% to 100%. The relative position described above is a state in which the elastic member provided in the absorbent article is completely extended (that is, a state in which the elastic member is removed or a state in which the elastic member is not cut and the contracting force of the elastic member is not expressed). ) To measure. In the present invention, values measured under similar conditions are used for various other lengths and positions.

  The outer surface of the first flap is joined to the top sheet at the center region at the center joint, the end region is joined to the top sheet at the end joint, and the middle region is joined to the top sheet at the middle joint. The partial joint is located outward in the width direction from the intermediate joint. By joining the first flap to the top sheet in this way, the first flap is tilted outward in the width direction by the contraction force of the first elastic member and rises. The outer side surface of the first flap means an outer side surface in the width direction of the first flap in a state where the first flap is raised. The 1st flap should just be joined to a top sheet by joining means, such as adhesives, heat fusion, ultrasonic fusion, etc., for example.

  The outer surface of the first flap may be joined directly or indirectly to the top sheet. For example, when a sheet member folded in a V-shaped cross section is formed such that one side across a crease is joined to a top sheet and the other side is formed as a first flap, the outer surface of the first flap is the sheet member In this way, the outer surface of the first flap may be bonded to the top sheet.

  The first flap only needs to be formed so that at least the intermediate region rises. As will be described later, the central region is formed so that rising is suppressed more than the intermediate region. The central region may be formed so as to be able to stand up, or may be formed so as not to be able to stand up. In the intermediate region of the first flap, only the rising base portion that becomes the starting point of the rising may be bonded to the top sheet. In this case, it is also considered that the outer surface of the first flap is bonded to the top sheet. The intermediate region of the first flap preferably has a length from the standing base portion to the free end of 15 mm or more, more preferably 20 mm or more, whereby the intermediate region of the first flap is easily raised at a sufficiently high height. Although the upper limit of the length from the standing base part to the free end of the intermediate region is not particularly limited, for example, 60 mm or less is preferable, and 50 mm or less is more preferable.

  The end joint part may include a part where the position in the width direction overlaps with the intermediate joint part as long as the end joint part is provided so as to include a part located outward in the width direction from the intermediate joint part. May also include a portion located inward in the width direction. The end joint portion may be provided intermittently in the width direction. It is preferable that at least a part of the end joint portion is within 8 mm (more preferably within 5 mm) from the free end (the outer end in the width direction of the end region), so that the intermediate region of the first flap is high. Easier to get up.

  The first flap is formed so that the rising of the central region is suppressed more than that of the intermediate region. Specifically, the first flap is formed so that the height of the central region rising is lower than that of the intermediate region, or formed so that the rising force (force to lift the auxiliary absorber) is weak. By forming the first flap in this way, when the auxiliary absorber is placed on the first flap, the height at which the auxiliary absorber is lifted in the central region is lowered, and the auxiliary absorber is concave in the cross section in the front-rear direction. It becomes easy to be formed. Further, as described above, since the first flap is formed so as to be tilted outward in the width direction, the auxiliary absorber placed on the first flap has a concave shape in the cross section in the width direction. It becomes easier to form. As a result, the auxiliary absorber placed on the first flap can suitably receive urine etc. excreted from the wearer, and urine or the like is unlikely to overflow from the auxiliary absorber. It becomes easy to absorb suitably.

  In order to prevent the central region of the first flap from rising more than the intermediate region, the outer surface of the first flap is the top so that the central joint is positioned outward in the width direction relative to the intermediate joint. It is preferable to be joined to a sheet (first embodiment). By joining the central joint portion to the top sheet in this way, the height at which the central region of the first flap rises can be kept low, and when the auxiliary absorber is placed on the first flap, the auxiliary absorber in the central region The lifting height is lower.

  As long as the central joint is provided so as to include a portion positioned outward in the width direction relative to the intermediate joint, the central joint may include a portion where the position in the width direction overlaps with the intermediate joint. A portion located inward in the width direction may be included. The center joint portion may be provided intermittently in the width direction. It is preferable that at least a part of the center joint portion is within 10 mm (more preferably within 8 mm) from the free end (the outer end in the width direction of the center region), thereby sufficiently raising the center region of the first flap. Can be kept low.

  In order for the central region of the first flap to be prevented from rising more than the intermediate region, it is also preferable that the first elastic member is provided intermittently in the central region (second embodiment). By providing the first elastic member in this manner, the contraction force of the first elastic member is reduced in the central region of the first flap, and when the auxiliary absorber is placed on the first flap, the auxiliary absorber is disposed in the central region. The height that can be lifted is reduced. When the first elastic member is provided intermittently in the central region, the intermittent portion in the central region of the first elastic member may be only one place or two or more places.

  The first elastic member is continuously provided in the intermediate region. The first elastic member is provided from the front intermediate region to the rear intermediate region. In the second embodiment described above, the first elastic member is cut at the central region, whereby the first elastic member is intermittent at the central region. Is preferably provided. In the first embodiment, the first elastic member may be provided continuously from the front intermediate region through the central region to the rear intermediate region, or may be provided intermittently in the central region. The first elastic member may further extend to the front end region and / or the rear end region.

  The first elastic member is preferably fixed to the first flap in an extended state. The first elastic member may be fixed to the first flap by a known joining means such as an adhesive.

  The first elastic member is preferably provided at least in the vicinity of the free end of the first flap. For example, the first elastic member is preferably provided at least in a region within 5 mm (more preferably within 3 mm) from the free end. By providing the first elastic member in this manner, when the auxiliary absorber is placed on the first flap, the auxiliary absorber can be easily formed into a deep concave shape in the cross section in the width direction.

  The first flap is preferably provided with a plurality of first elastic members arranged in the width direction. By providing the first elastic member in this manner, even if the auxiliary absorber is placed on the first flap, the first flap is less likely to be crushed by the auxiliary absorber, and the auxiliary absorber is brought closer to the wearer's skin. It becomes easy to lift. Preferably, three or more first elastic members are provided side by side in the width direction.

  The first elastic member is preferably provided so as to extend in the front-rear direction at each of the three divided portions when the rising portion from the rising base portion of the first flap to the free end is divided into three in the width direction. By providing a plurality of first elastic members in this way, the rigidity of the entire first flap can be increased, and even when the auxiliary absorber absorbs urine or the like, the state where the auxiliary absorber is brought close to the wearer's skin. Easy to maintain.

  The first flap is provided on one side and the other side in the width direction of the absorbent article, but the first flap on one side and the first flap on the other side are preferably provided close to each other. Specifically, the distance between the upright base in the intermediate region of the first flap on one side and the upright base in the intermediate region of the first flap on the other side (that is, the distance between the upright bases in the intermediate region of the first flap). Is preferably 60 mm or less, more preferably 50 mm or less, and even more preferably 40 mm or less. By providing the first flap in this manner, the auxiliary absorbent body can be easily placed on the first flap, and the auxiliary absorbent body can be brought close to the wearer's skin and lifted easily by the first flap.

  The distance between the standing bases in the intermediate region of the first flap is preferably 1.8 times or less, more preferably 1.6 times or less of the length from the standing base to the free end in the intermediate region of the first flap. . By forming the first flap in this way, the first flap is unlikely to fall inward in the width direction. That is, even if the first flap on one side is about to fall inward in the width direction, the first flap on the other side is obstructing and the first flap is completely tilted inward in the width direction. It becomes easy to be stopped.

  A 1st flap may be provided over the full length of the front-back direction of an absorbent article, and may be provided in a part of front-back direction of an absorbent article. The first flap is 70% or more (more preferably 80% or more, more preferably 90% or more) in the front-rear direction of the absorbent article from the viewpoint of easily placing the auxiliary absorbent article on the first flap. It is preferable to have a length of Moreover, it is also preferable that a 1st flap is provided over the whole length of the front-back direction of an absorbent article.

  In the first flap, the first flap on one side and the first flap on the other side may be formed from one sheet member, or may be formed from separate sheet members. In the former case, a center sheet is arranged on the top sheet, the center part in the width direction of the center sheet is joined to the top sheet, and both end parts of the center sheet are formed so as to stand up. Can be formed. In the latter case, a right center sheet and a left center sheet are arranged on both sides of the top sheet in the width direction, and the inside part in the width direction of the right center sheet and the left center sheet is joined to the top sheet, and the outside part is formed to rise. By doing so, each 1st flap can be formed.

  As the center sheet (including the left center sheet and the right center sheet), a sheet material that can be used for the top sheet and the back sheet can be used. The first flap or the center sheet is preferably liquid-permeable, so that urine or the like received by the auxiliary absorbent overflows from the auxiliary absorbent and moves onto the first flap, or on one side and the other. Even if it transfers between the 1st flaps of the side, urine etc. can permeate | transmit a 1st flap and a center sheet | seat, and can be made to absorb suitably in an absorptive core. As a result, it becomes easy to prevent leakage of urine and the like from the absorbent article.

  The absorbent article is preferably provided with a second flap outside the first flap in the width direction. In this case, a total of four flaps including the first flap and the second flap are provided on the skin surface side of the absorbent article. The second flap is provided in order to prevent side leakage such as urine. Therefore, the second flap is preferably liquid-impermeable. A 2nd flap is corresponded to the leak-proof flap provided in a general absorbent article.

  The second flap is preferably provided with an elastic member extending in the front-rear direction, and the second flap is formed to rise toward the wearer's skin by the contraction force of the elastic member. Hereinafter, the elastic member provided on the second flap is referred to as a “second elastic member”.

  The second elastic member is preferably fixed to the second flap in an extended state. The second elastic member is preferably provided at least in the vicinity of the free end when the starting point where the second flap rises is the standing base and the rising tip is the free end. The second elastic member is preferably provided at least in a region within 10 mm (more preferably within 5 mm) from the free end. The second flap may be provided with a plurality of second elastic members arranged in the width direction.

  The second flap is formed so as to tilt inward in the width direction. When the second flap rises so as to tilt inward in the width direction, urine or the like overflowing from the auxiliary absorbent body hardly leaks over the second flap.

  A 2nd flap contains the part (namely, standing part) from the standing base part to a free end among the sheet members which comprise a 2nd flap, and is the inner side of the width direction from the standing base part located in the outermost part of the width direction. It corresponds to the part in That is, a boundary line extending in the front-rear direction is drawn on the seat member constituting the second flap, extending in the front-rear direction at the upright base portion positioned at the outermost position in the width direction, and is located on the inner side in the width direction with respect to the boundary line. A portion including is considered as a second flap.

  The inner side surface of the second flap is joined to the top sheet, and in this case, the end region in the front-rear direction of the inner side surface of the second flap is preferably joined to the top sheet inward in the width direction compared to the region therebetween. . By providing the second flap in this way, the second flap is inclined inward in the width direction and is likely to rise. The inner side surface of the second flap means an inner side surface with respect to the width direction of the second flap in a state where the second flap is raised. The second flap may be joined directly or indirectly to the top sheet or the like by a joining means such as an adhesive, heat fusion, or ultrasonic fusion.

  The second flap is preferably provided so as not to overlap the first flap. Specifically, the first flap and the second flap are preferably formed so as to be separated from each other in a lying state. Thus, if the 1st flap and the 2nd flap are formed, when using an absorptive article, both the 1st flap and the 2nd flap will stand up easily.

  In the first flap and the second flap, the distance between the standing base in the intermediate region of the first flap and the rising base of the second flap is such that the first base in the intermediate region of the first flap on the one side and the first on the other side. It is preferable to be provided so as to be longer than the distance from the upright base in the intermediate region of the flap. In this case, since the first flaps on one side and the other side in the width direction are provided close to each other, when the auxiliary absorber is placed on the first flap, the auxiliary absorber is attached to the skin of the wearer. Can be installed closer. In addition, since the second flap is provided on the outer side in the width direction of the absorbent article, even if urine or the like overflows from the auxiliary absorbent body, side leakage of urine or the like is effectively prevented by the second flap. Become so. In addition, the distance between the standing base part and the standing base part of the second flap in the intermediate region of the first flap is the distance between the first flap and the second flap located outside in the width direction of the first flap. Means.

  The absorbent article is preferably provided with an elastic member extending in the front-rear direction between the first flap on one side and the first flap on the other side. Specifically, it is preferable that an elastic member extending in the front-rear direction is provided between the upright base in the intermediate region of the first flap on one side and the upright base in the intermediate region of the first flap on the other side. By providing an elastic member extending in the front-rear direction between the first flap on the one side and the first flap on the other side, the rising base that is the starting point of the rising of the first flap is lifted toward the wearer's skin, One flap is formed so as to approach the wearer's skin. Hereinafter, the elastic member provided between the first flap on one side and the first flap on the other side is referred to as a “third elastic member”.

  The number of the third elastic members provided is not particularly limited, but the third elastic members are preferably provided on both sides of the center in the width direction of the absorbent article. The third elastic member is preferably provided in a region within 10 mm inward in the width direction from the standing base in the intermediate region of the first flap, more preferably in a region within 7 mm, and within 5 mm. More preferably, it is provided in the region.

  It is preferable that a 3rd elastic member is provided in the skin surface side rather than an absorptive core. By providing the third elastic member in this way, the first flap can be brought closer to the wearer's skin. Therefore, the auxiliary absorber placed on the first flap can also be placed closer to the wearer's skin. Specifically, the third elastic member can be provided between the absorbent core and the top sheet or on the top sheet. Further, when the first flap is formed from the center sheet (including the left center sheet and the right center sheet) described above, the third elastic member may be provided between the center sheet and the top sheet. In this case, when the center sheet is composed of a plurality of layers, the third elastic member may be disposed between the plurality of center sheets.

  As each elastic member demonstrated above, the elastic elastic material normally used for absorbent articles, such as a polyurethane thread | yarn, a polyurethane film, a natural rubber, can be used. The elastic member is preferably fixed in an expanded state with an adhesive such as a hot melt adhesive. For example, polyurethane yarn having a fineness of 40 to 1,240 dtex is stretched and arranged at a magnification of 1.1 to 5.0 times and fixed. As the joining means, a rubber-based hot melt adhesive is preferably used. The magnification is 1.0 in the non-expanded state.

  In the absorbent article, an opening or a recess may be formed in the absorbent core. In this case, the opening or the recess of the absorbent core is preferably provided between the first flap on one side and the first flap on the other side so as to extend in the front-rear direction. Specifically, an opening or recess extending in the front-rear direction is provided in the absorbent core between the upright base in the intermediate region of the first flap on one side and the upright base in the intermediate region of the first flap on the other side. Is preferred. If the absorbent core is formed in this manner, the absorbent core is easy to be formed in a shape in which the absorbent core is recessed in the opening or the recess, that is, in the width direction cross-section, in a state where the wearer wears the absorbent article. Become. As a result, the auxiliary absorber placed on the first flap is easily formed in a concave shape in the cross section in the width direction.

  The opening is provided so as to penetrate the absorbent core in the thickness direction, or is provided so as to divide the absorbent core in the left-right direction. The recess is formed so that the basis weight of the absorbent core is reduced. The recesses are preferably formed such that the basis weight is 60% by mass or less (more preferably 50% by mass or less, and further preferably 40% by mass or less) as compared with the part other than the recesses.

  It is preferable that the opening or the concave portion of the absorbent core is provided so as not to overlap the upright base portion of the first flap. Moreover, when the 3rd elastic member demonstrated above is provided in an absorbent article, it is preferable that a 3rd elastic member is provided in the width direction outward rather than an opening or a recessed part. That is, it is preferable that the third elastic member is provided at a position between the opening of the absorbent core or the outer end in the width direction of the recess and the upright base portion of the first flap. Thereby, while becoming easy to form an absorptive core in the shape dented by opening or a recessed part, it becomes easy to form so that the whole 1st flap may approach a wearer's skin.

  Next, the structural example of the absorbent article of this invention is demonstrated with reference to drawings. In the drawings, an open type (tape type) disposable diaper is shown as an absorbent article. The present invention is not limited to the embodiments shown in the drawings.

  1 to 3 show an example of the absorbent article of the present invention. 1 represents a plan view of an open type disposable diaper as an absorbent article as seen from the skin side, FIG. 2 represents a II-II cross-sectional view of the absorbent article shown in FIG. 1, and FIG. In FIG. 2, the usage example of the absorbent article in the state which mounted the auxiliary absorber on the absorbent article is represented. In the drawings of the present application, the arrow x represents the width direction, the arrow y represents the front-rear direction, and the direction perpendicular to the plane formed by the arrows x, y represents the up-down direction z. In FIG. 1, the upper side of the drawing corresponds to the front side of the absorbent article, and the lower side of the drawing corresponds to the rear side of the absorbent article. Further, FIG. 1 shows a state in which the first flap is lying down, but FIGS. 2 and 3 show a state in which the first flap is erected.

  The absorbent article 1 (1A) has an absorbent core 4 disposed between the top sheet 2 and the back sheet 3. The excrement passing through the top sheet 2 is accommodated by the absorbent core 4. The back sheet 3 is provided on the outer surface side of the absorbent core 4 to prevent excrement from leaking to the outside. In the absorbent article 1A, the absorbent core 4 is formed in an hourglass shape.

  A fastening member 14 is attached to the left and right ends of the rear side portion of the absorbent article 1A in the front-rear direction y. The fastening member 14 is configured by providing a fastener 16 on a base sheet 15. The absorbent article 1A can be attached by placing it on the wearer's crotch and joining the fastener 16 of the fastening member 14 to the outer side surface of the front side portion of the absorbent article 1A. As the fastener 16, a hook member of a hook, a loop, or a fastener or an adhesive can be employed.

  The top sheet 2 is provided with first flaps 5 formed on one side and the other side in the width direction x so as to tilt outward in the width direction x. In the drawing, the center sheet 7 is arranged on the top sheet 2, the center part in the width direction x of the center sheet 7 is joined to the top sheet 2, and both end parts in the width direction x of the center sheet 7 are formed to rise. Thus, the first flap 5 is formed. The first flap 5 includes a first flap 5A on one side in the width direction x and a first flap 5B on the other side. In FIG. 1, the location where the center sheet 7 is joined to the top sheet 2 is represented by cross hatching.

  The first flap 5 has a central region C, an end region E, and an intermediate region M located between them in the front-rear direction y, and the central region C is the top at the central joint on the outer surface of the first flap 5. Joined to the sheet 2, the end region E is joined to the top sheet 2 at the end joint, and the intermediate region M is joined to the top sheet 2 at the intermediate joint. And the outer side surface of the 1st flap 5 is joined to the top sheet 2 so that an edge part junction part may be located in the outward of the width direction x rather than an intermediate junction part. In 1 A of absorbent articles, the edge part junction part of the 1st flap 5 is formed in planar shape, and the center junction part and the intermediate | middle junction part are formed in the linear form extended in the front-back direction y.

  The first flap 5 is provided with a first elastic member 6 extending in the front-rear direction y. As described above, the first flap 5 is joined to the top sheet 2 and provided with the first elastic member 6, so that the first flap 5 is tilted outward in the width direction x and rises. In the absorbent article 1A, the first elastic member 6 extends from the front end region E to the rear end region E and is provided intermittently in the central region C. On the other hand, in the end region E and the intermediate region M, the first elastic member 6 is continuously provided. In addition, since the 1st elastic member 6 is provided so that it cannot be visually recognized directly when the absorbent article 1A is seen from the skin surface side, in FIG. 1, the location where the 1st elastic member 6 is provided continuously (In other words, the end region E and the intermediate region M) are also represented by dotted lines. The same applies to other elastic members.

  The absorbent article 1A is formed such that the first flap 5 tilts outward in the width direction x, and the first elastic member 6 is provided on the first flap 5, whereby the first flap as shown in FIG. When the auxiliary absorbent body 20 is placed on 5, the auxiliary absorbent body 20 can be lifted toward the wearer's skin by the first flap 5. At this time, the auxiliary absorbent body 20 is easily formed in a concave shape in the cross section in the width direction x by the first flap 5 formed so as to tilt outward in the width direction x, and the first elastic member 6. Is intermittently provided in the central region C of the first flap 5, the force with which the first flap 5 lifts the auxiliary absorbent body 20 in the central region C is weakened, and it is easy to form a concave shape in the cross-section in the front-rear direction y. . As a result, the auxiliary absorbent body 20 placed on the first flap 5 can suitably receive the urine excreted from the wearer, and the urine or the like is unlikely to overflow from the auxiliary absorbent body 20. Urine or the like is suitably absorbed by the absorber 20.

  In the absorbent article 1A, a plurality of first elastic members 6 are provided side by side in the width direction x (three in each drawing in each first flap). By providing a plurality of first elastic members 6, even if the auxiliary absorbent body 20 is placed on the first flap 5, the first flap 5 is not easily crushed by the auxiliary absorbent body 20, and the auxiliary absorbent body 20 is attached to the wearer's wearer. Close to skin and easier to lift.

  The absorbent article 1A is further provided with a third elastic member 11 extending in the front-rear direction y between the first flap 5A on one side and the first flap 5B on the other side. Specifically, the third elastic member 11 is provided between the standing base in the intermediate region M of the first flap 5A and the standing base in the intermediate region M of the first flap 5B. The third elastic member 11 is formed so that the entire first flap 5 approaches the wearer's skin.

  Leg elastic members 12 are provided on both sides of the absorbent article 1 </ b> A in the width direction x, outside the width direction x of the absorbent core 4. Leg gathers along the leg circumference of the wearer are formed by the leg elastic member 12, and leakage of excrement such as urine from the leg circumference is prevented.

  A waist elastic member 13 is provided at the end in the front-rear direction y of the absorbent article 1A. A waist gather is formed around the waist of the wearer by the waist elastic member 13, and leakage of urine and the like from the back side and the abdomen side is prevented.

  Next, another configuration example of the absorbent article of the present invention will be described. FIG. 4 represents a plan view of an open-type disposable diaper as an absorbent article as seen from the skin side, and FIG. 5 is a plan view of a center sheet constituting the first flap of the absorbent article shown in FIG. FIG. 6 shows a VI-VI sectional view of the absorbent article shown in FIG. FIG. 4 shows a state in which the first flap and the second flap have fallen down, but FIG. 6 shows a state in which the first flap and the second flap stand up. In the following description, the description of the same part as the above description is omitted.

  In the absorbent article 1 (1B) shown in FIGS. 4 to 6, the first elastic member 6 is continuously provided also in the central region C of the first flap 5 (see FIG. 5). Specifically, the first elastic member 6 is continuously provided from the front end region E to the rear end region E of the first flap 5. And while the outer side surface of the 1st flap 5 is joined to the top sheet 2 so that an edge part junction part is located in the outward of the width direction x rather than an intermediate junction part, a center junction part is also more than an intermediate junction part. The top sheet 2 is joined so as to be located outward in the width direction x. In the absorbent article 1B, the end joint portion and the center joint portion of the first flap 5 are formed in a planar shape, and the intermediate joint portion is formed in a linear shape extending in the front-rear direction y.

  Also in the absorbent article 1 </ b> B, when the auxiliary absorbent body is placed on the first flap 5, the auxiliary absorbent body is formed in the width direction by the first flap 5 formed so as to tilt and rise outward in the width direction x. The cross section of x is easily formed in a concave shape, and the first flap 5 is easily formed in a concave shape in the cross section in the front-rear direction y because the rising height of the central region C is kept low. As a result, the auxiliary absorber placed on the first flap 5 can suitably receive the urine excreted from the wearer, and the urine or the like is unlikely to overflow from the auxiliary absorber. As a result, urine and the like are suitably absorbed.

  The absorbent article 1B is further provided with a second flap 8 formed so as to tilt inward in the width direction x on the outer side in the width direction x of the first flap 5. Even if urine or the like overflows from the auxiliary absorbent body placed on the first flap 5, the second flap 8 can prevent side leakage from the absorbent article 1B. In the drawing, the side sheet 10 is arranged on the top sheet 2, the outside part in the width direction x of the side sheet 10 is joined to the top sheet 2 or the back sheet 3, and the inside part in the width direction x of the side sheet 10 rises. By forming in this way, the second flap 8 is formed. The second flap 8 includes a second flap 8A on one side in the width direction x and a second flap 8B on the other side. In FIG. 4, the location where the side sheet 10 is joined to the top sheet 2 or the back sheet 3 is represented by cross hatching.

  In the second flap 8, the end region in the front-rear direction y of the inner surface is joined to the top sheet 2, and the second elastic member 9 extending in the front-rear direction y is provided on the second flap 8. By configuring the second flap 8 in this way, the second flap 8 is formed so as to tilt and rise inward in the width direction x.

  In the first flap 5 and the second flap 8, the distance between the standing base in the intermediate region M of the first flap 5A (or 5B) and the standing base of the second flap 8A (or 8B) is the first side on the one side. It is provided so as to be longer than the distance between the upright base in the intermediate region M of the flap 5A and the upright base in the intermediate region M of the first flap 5B on the other side. By providing the first flap 5 and the second flap 8 in this manner, when the auxiliary absorbent body is placed on the first flap 5, the auxiliary absorbent body can be placed closer to the wearer's skin. Moreover, since the 2nd flap 8 will be provided in the outer side of the width direction x of the absorbent article 1B, even if urine etc. overflow from an auxiliary absorber, the side leakage of urine etc. is effective by the 2nd flap 8. Will be prevented.

  As mentioned above, although the structural example of the absorbent article of this invention was demonstrated, the deformation | transformation of the absorbent article of this invention can add various deformation | transformation to said structural example. For example, the second flap may be provided in the absorbent article 1A, and conversely, the second flap may not be provided in the absorbent article 1B. In addition, the first elastic member is intermittently provided in the central region, and the outer surface of the first flap is bonded to the top sheet so that the central bonding portion is positioned outward in the width direction from the intermediate bonding portion. Also good. Other elastic members can be arbitrarily disposed or removed.

1, 1A, 1B: Absorbent article 2: Top sheet 3: Back sheet 4: Absorbent core 5, 5A, 5B: First flap 6: First elastic member 7: Center sheet 8, 8A, 8B: Second flap 9: 2nd elastic member 10: Side sheet 11: 3rd elastic member 12: Elastic member for legs 13: Elastic member for waist C: Central area M: Middle area E; End area

Claims (7)

An absorbent article having a top sheet, a back sheet, and an absorbent core disposed therebetween, and having a front-rear direction and a width direction,
The top sheet has a central region and an end region in the front-rear direction and an intermediate region located between them on one side and the other side in the width direction, and is formed so as to tilt outward in the width direction. A first flap is provided,
The first flap is provided with a first elastic member extending in the front-rear direction,
The outer side surface of the first flap has the central region joined to the top sheet at a central joint, the end region joined to the top sheet at an end joint, and the intermediate region at the intermediate joint. Bonded to the top sheet,
The absorbent article, wherein the end joint part is located outward in the width direction with respect to the intermediate joint part, and the central joint part is located outward in the width direction with respect to the intermediate joint part. An absorbent article having a top sheet, a back sheet, and an absorbent core disposed therebetween, and having a front-rear direction and a width direction,
The top sheet has a central region and an end region in the front-rear direction and an intermediate region located between them on one side and the other side in the width direction, and is formed so as to tilt outward in the width direction. A first flap is provided,
The first flap is provided with a first elastic member extending in the front-rear direction,
The outer side surface of the first flap has the central region joined to the top sheet at a central joint, the end region joined to the top sheet at an end joint, and the intermediate region at the intermediate joint. Bonded to the top sheet,
The absorbent article, wherein the end joint portion is positioned outward in the width direction with respect to the intermediate joint portion, and the first elastic member is provided intermittently in the central region.   The absorbent article according to claim 1 or 2, wherein the first flap is provided with a plurality of the first elastic members arranged in the width direction.   The distance between the upright base in the intermediate region of the first flap on the one side and the upright base in the intermediate region of the first flap on the other side is 60 mm or less. The absorbent article as described. A second flap formed so as to tilt inward in the width direction is provided on the outer side in the width direction of the first flap,
The absorbent article as described in any one of Claims 1-4 with which the 2nd elastic member extended in the front-back direction is provided in the said 2nd flap.   In the first flap and the second flap, the distance between the rising base in the intermediate region of the first flap and the rising base of the second flap is such that the first flap on the one side is standing in the intermediate region. The absorptive article according to claim 5 provided so that it may become longer than the distance between the base and the standing base in said middle field of said 1st flap of said other side.   A third elastic member extending in the front-rear direction is further provided between an upright base in the intermediate region of the first flap on the one side and an upright base in the intermediate region of the first flap on the other side. The absorbent article as described in any one of 1-6.