JP5784341B2 - Absorbent articles - Google Patents

Description

  The present invention relates to absorbent articles such as sanitary napkins, panty liners, and incontinence pads for absorbing menstrual blood and vaginal discharge, etc., and standing on the use surface side along the longitudinal direction on both sides of the use surface side. The present invention relates to an absorbent article in which a three-dimensional gather is formed.

  Conventionally, as an absorbent article such as a panty liner, sanitary napkin, incontinence pad, a liquid-impervious back sheet such as a polyethylene sheet or a polyethylene sheet-laminated nonwoven fabric, and a liquid-permeable surface sheet such as a nonwoven fabric or a liquid-permeable plastic sheet There is known an intervening absorber made of cotton-like pulp or the like.

  In this type of absorbent article, in order to prevent lateral leakage of excreted bodily fluids, three-dimensional gathers standing on the use surface side along the longitudinal direction are formed on both sides of the use surface side of the absorbent article in various forms. It is formed with.

  For example, in Patent Document 1 below, a pair of gathers are formed on both sides in the longitudinal direction of the surface layer so as to be spaced apart from each other and configured to have a hollow portion by a sheet-like member, and each of the pair of gathers includes: The sheet-like member has a three-dimensional shape that protrudes toward the skin contact surface side of the absorbent article, and the three-dimensional shape part is formed by a joint formed so as to extend in the longitudinal direction of the absorbent article. A first joining end portion that is joined to the front surface layer and / or the back surface layer and that forms a hollow portion, and the joining portion forms an end portion on the inner side in the width direction of the three-dimensionally shaped portion. And a second joint end portion that forms an end portion on the outer side in the width direction of the three-dimensional shape portion, and a length L1 from the first joint end portion to the second joint end portion in the three-dimensional shape portion. And the first joint end and the second contact The ratio of the joint end portion distance L2 is the distance between the end portion (L1 / L2) is absorbent article is disclosed is 2 or more.

  Moreover, in the following patent document 2, it comprises a loop-shaped leak-proof wall formed by joining a strip-shaped stretchable sheet to each of the longitudinal sides of the absorbent main body, and each of the leak-proof walls is a wearer. Including the excretion part region that is in contact with the body fluid excretion part, and at least one of the region from the disposition region to the rear and the region from the excretion part region to the front thereof. The joint part, which is joined, is convex toward the inner side in the width direction of the absorbent article in at least one of the region from the excretion part region to the rear and the region from the excretion part region to the front thereof A portion where one side portion of the stretchable sheet is joined, and a joint portion on the other side portion forms an inward convex portion. In the outer side of the absorbent article in the width direction There is disclosed an absorbent article having a high wall portion in which the height of the leak-proof wall is partially high by having an outward convex portion that is curved or bent in a convex shape. .

JP 2009-6065 A JP 2010-110558 A

  However, in the absorbent article described in Patent Document 1, the cross-sectional shape in the width direction of the three-dimensional gather has a substantially Ω shape in which the maximum width L3 in the three-dimensional shape of the gather is larger than the distance L2 between the joining ends. The hollow three-dimensional shape portion is not necessarily formed at a sufficient height, and there is a possibility that the close contact with the body is lost and a side leak occurs.

  Moreover, in the absorbent article of the said patent document 2, although the joint part of an elastic sheet is made to meander, the high wall part which heightened the height of the hollow loop-shaped leak-proof wall partially was formed. In addition, there is a possibility that the high wall portion may fall inward at the time of wearing. In this case, the upper surface of the absorbent body is covered with the stretchable sheet, so that the body fluid absorbing function may be lowered. Also in the absorbent article described in Patent Literature 1, particularly when the distance between the joining ends on the both ends in the longitudinal direction of the absorbent article is formed larger than the distance between the joining ends in the center in the longitudinal direction of the absorbent article. Can cause similar problems.

  Therefore, the main problem of the present invention is that the absorbent article in which the three-dimensional gathers standing on the use surface side along the longitudinal direction are formed on both side portions on the use surface side, follow the movement of the body and between the body. An object of the present invention is to provide an absorbent article in which a gap is not easily formed and stable adhesion is secured, and a three-dimensional gather is less likely to fall inside.

In order to solve the above-mentioned problem, as the present invention according to claim 1, an absorbent body is interposed between the liquid-permeable top sheet and the back sheet, and each side part on the use surface side is used along the longitudinal direction. In the absorbent article in which a three-dimensional gather standing on the surface side is formed,
The three-dimensional gather is composed of a loop-shaped three-dimensional gather having a hollow cross section at least in a crotch region including a body fluid discharge site, and a free-end three-dimensional gather having a free end at the outer end in the width direction. The absorbent article is characterized in that the free end-shaped three-dimensional gather tip is joined to the surface side of the loop-shaped three-dimensional gather in the rear and front regions from the crotch region. Provided.

  In the invention according to claim 1, as a three-dimensional gather formed along the longitudinal direction on both sides on the use surface side of the absorbent article, in a crotch region including at least a body fluid discharge site, a loop shape having a hollow cross section The three-dimensional gather is composed of a three-dimensional gather having a standing end at the outer side in the width direction and a free end at the distal end.

  For this reason, even when the three-dimensional gather and the body move unexpectedly due to the movement of the body, the free end-shaped three-dimensional gather with a high degree of freedom for movement does not create a gap between the body and the body, Stable adhesion is ensured. Moreover, at the time of normal wearing, the looped three-dimensional gather can stably maintain the close contact with the body.

  Furthermore, since the free end-shaped three-dimensional gather is formed outside the loop-shaped three-dimensional gather, the free-end three-dimensional gather can be prevented from falling to the absorber side, and the function of absorbing bodily fluids is not lowered.

Furthermore, in the present invention, since the tip of the free end-shaped solid gather is joined to the surface side of the loop-shaped solid gather in the rear and front regions from the crotch region, the discomfort in the buttocks and lower abdomen is reduced. it can.

As the present invention according to claim 2, standing height of the free end shaped standing gathers absorbent article of claim 1 Symbol mounting is formed higher than the standing height of the loop-shaped three-dimensional gathers are provided.

In the invention according to the second aspect , since the standing height of the free end-shaped solid gather is formed higher than the standing height of the loop-shaped solid gather, the followability of the free-end solid gather to the body is improved. Become.

As a third aspect of the present invention, the free end-shaped three-dimensional gather covers the half of the loop-shaped three-dimensional gather in the width direction in a state where the free-end three-dimensional gather is tilted to the surface side of the loop-shaped three-dimensional gather. An absorbent article according to any one of claims 1 and 2 is provided.

In the invention according to claim 3 , by forming the free end-shaped solid gather so as to cover more than half of the loop-shaped solid gather in the width direction, the followability to the body is improved in the crotch region, and the front and rear regions thereof Then, the leakage of body fluid from the loop-shaped three-dimensional gather can be reduced.

As the present invention according to a fourth aspect , there is provided the absorbent article according to any one of the first to third aspects, wherein the loop-shaped three-dimensional gather and the free end-shaped three-dimensional gather are each constituted by separate sheets.

In the invention described in claim 4, it is possible to adopt a property having a function corresponding to each three-dimensional gather by configuring the loop-shaped three-dimensional gather and the free-end three-dimensional gather with separate sheets. become able to.

As the present invention according to claim 5 , there is provided an absorbent article according to claim 4 , wherein the loop-shaped three-dimensional gather has hydrophilicity, and the free end-shaped three-dimensional gather is constituted by a sheet having water repellency. .

In the invention according to claim 5 , when the loop-shaped three-dimensional gather and the free-end three-dimensional gather are formed of separate sheets, the loop-shaped three-dimensional gather is hydrophilic and the free-end three-dimensional gather is water-repellent. It is. As a result, the bodily fluid flowing from the body fluid discharge site side can be absorbed by the inner loop-shaped three-dimensional gather having hydrophilicity, and the bodily fluid absorbed by the loop-shaped three-dimensional gather by the outer end free-spaced three-dimensional gather having water repellency. Prevents seepage and leakage.

The present invention according to claim 6 is the absorption according to any one of claims 1 to 5 , wherein a sheet-like absorbent body is disposed along the longitudinal direction of the member at least on the inner side in the width direction of the loop-shaped three-dimensional gather. A sex article is provided.

As the present invention according to claim 7 , there is provided the absorbent article according to claim 6 , wherein a plurality of openings are provided in the loop-shaped three-dimensional gather of the portion where the sheet-like absorber is disposed.

In the inventions according to claims 6 and 7 , a sheet-shaped absorbent body is disposed along the longitudinal direction of the member at least on the inner side in the width direction of the loop-shaped three-dimensional gather, and the sheet-shaped absorbent body is disposed as necessary. By providing a plurality of apertures in the part, the body fluid flowing from the body fluid discharge site side is surely absorbed by the loop-shaped solid gather.

  As described above in detail, according to the present invention, in the absorbent article in which the three-dimensional gathers standing on the use surface side along the longitudinal direction are formed on both sides on the use surface side, the body and the body follow the movement of the body. It is possible to provide an absorbent article in which a gap is not easily formed and stable adhesion is ensured, and the three-dimensional gather is less likely to fall inside.

It is a partial fracture development view of sanitary napkin 1 concerning the present invention. It is the II-II arrow directional view. It is the III-III arrow directional view of FIG. It is the IV-IV arrow directional view of FIG. It is a cross-sectional view which shows the other example of a solid gather BS. It is a cross-sectional view which shows the other example of a solid gather BS. It is a cross-sectional view which shows the other example of a solid gather BS.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Basic structure of sanitary napkin 1]
A sanitary napkin 1 according to the present invention includes a liquid-impervious back sheet 2 made of a polyethylene sheet, a liquid-permeable surface sheet 3 that allows permeation of menstrual blood or a cage, and a space between these sheets 2 and 3. An absorbent body 4 made of cotton-like pulp or synthetic pulp, and crepe paper 5 surrounding the absorbent body 4 for maintaining the shape and diffusibility of the absorbent body 4; A gather that forms a pair of left and right three-dimensional gathers BS, BS provided with a substantially side edge portion as an upright base end and projecting from the body fluid discharge site H to the surface side (use surface side) in a predetermined section in the front-rear direction The outer periphery of the liquid-impervious back sheet 2 and the liquid-permeable surface sheet 3 is mainly formed of hot melt or the like at the upper and lower end edges around the absorbent body 4. Adhesion The liquid-impervious back sheet 2 and the gather forming nonwoven fabric 6 which are joined by adhesive means such as heat seal or the like and extend laterally from the absorbent body 4 at both side edges thereof are hot-melted or the like. Wing-like flaps W and W projecting sideways are formed by a laminated sheet portion formed by the liquid-impermeable back sheet 2 and the gather-forming nonwoven fabric 6. with this second wing-shaped flaps portion located buttocks side from W _B, is W _B are formed.

Hereinafter, the structure of the sanitary napkin 1 will be described in detail.
As the liquid-impervious back sheet 2, a sheet material having at least water shielding properties such as polyethylene is used, but in recent years, a material having moisture permeability tends to be used from the viewpoint of preventing stuffiness. The water- and moisture-permeable sheet material is a microporous material obtained by melting and kneading an inorganic filler in an olefin-based resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. A sheet is preferably used. One or a plurality of adhesive layers (not shown) are formed on the non-use surface side (outer surface) of the liquid-impermeable back sheet 2 so as to fix the sanitary napkin 1 to the underwear when worn on the body. It has become. As said liquid-impermeable back sheet 2, you may use the polylamination nonwoven fabric which laminated | stacked the plastic film and the nonwoven fabric.

  Next, as the liquid-permeable surface sheet 3, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. As the material fibers constituting the nonwoven fabric, in addition to olefins such as polyethylene or polypropylene, polyesters, polyamides, and other synthetic fibers, regenerated fibers such as rayon and cupra, and natural fibers such as cotton can be used. A nonwoven fabric obtained by an appropriate processing method such as a method, a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft. When a large number of pores are formed in the liquid-permeable surface sheet 3, menstrual blood, venom, etc. (hereinafter collectively referred to as body fluids) are quickly absorbed, and are excellent in dry touch properties. It will be a thing.

  The absorbent body 4 interposed between the liquid-impervious back sheet 2 and the liquid-permeable top sheet 3 is made of, for example, fluffy pulp and a water-absorbing polymer. The water-absorbing polymer is mixed in the pulp constituting the absorber, for example, as granular powder. Examples of the pulp include chemical fibers obtained from wood, cellulose fibers such as dissolving pulp, and artificial cellulose fibers such as rayon and acetate. It is preferably used in terms of price. When the crepe paper 5 surrounding the absorbent body 4 is provided as in this example, the crepe paper 5 is interposed between the liquid-permeable surface sheet 3 and the absorbent body 4 as a result. The crepe paper 5 which is excellent in diffusing body fluids quickly prevents reversal of menstrual blood and the like.

  On the surface of the sanitary napkin 1, a pressing groove 8 can be formed in an appropriate shape. In the example shown in FIG. 1, a pressing groove 8 that is elongated in the longitudinal direction of the napkin 1 and closes in the circumferential direction is formed.

In the illustrated example, the width dimension of the liquid-permeable surface sheet 3 is slightly longer than the width of the absorbent body 4 as shown in the cross-sectional view of FIG. The three-dimensional gather BS, BS is formed of a non-gathering nonwoven fabric 6 different from the liquid-permeable top sheet 3, and the outside of the three-dimensional gather BS, BS is outside the liquid-impervious back sheet 2. An extending gather forming nonwoven fabric 6 is laminated. These gather forming nonwoven fabrics 6 are subjected to appropriate water-repellent treatment or hydrophilic treatment according to the purpose of preventing the penetration of the function of three-dimensional gathers, menstrual blood, or the like, or enhancing the feeling of touch. It is comprised using the made nonwoven fabric material. The nonwoven fabric 6 may be made of natural fibers, synthetic fibers, regenerated fibers, or the like and formed by an appropriate processing method. Preferably, the nonwoven fabric 6 has a feeling of creaking and prevents stuffiness. In addition, it is preferable to use a non-woven fabric with reduced basis weight and air permeability. Specifically, it is desirable to use a nonwoven fabric prepared with a basis weight of 13 to 23 g / m ² , and silicon-based, paraffin-based, alkylchromic chloride-based water repellents, etc. to reliably prevent the passage of body fluids. A water repellent nonwoven fabric coated with is preferably used.

As shown in FIG. 2, the gather forming nonwoven fabric 6 is bonded to the outer edge of the liquid-impermeable back sheet 2 with an adhesive such as hot melt, and the gather forming nonwoven fabric 6 is impermeable to the gather forming nonwoven fabric 6. The laminated sheet portion with the liquid-permeable back sheet 2 forms a pair of left and right wing-shaped flaps W, W at the absorbent body side position substantially corresponding to the body fluid discharge portion, and the second wing-shaped flap at the buttocks side position from this. W _B, to form a _{W B.} These wing-shaped flaps W, W and second wing-shaped flaps W _B, W, respectively on the outer surface side adhesive layer 10 ... of _B, 11 ... comprises a, when worn against shorts, line folding the wing-shaped flaps W, W It is folded back to the opposite side at the RL position and wrapped around the crotch portion of the shorts to be fastened.

  Hereinafter, the solid gather BS will be described in detail.

[About Three-dimensional Gather BS]
As shown in FIG. 2, the three-dimensional gather BS has an upright proximal end on the outer side in the width direction of the loop-shaped three-dimensional gather 20 having a hollow cross section and its sanitary napkin 1 in the crotch region A1 including at least the body fluid discharge site H. And a free end-shaped three-dimensional gather 21 whose tip is a free end.

  Specifically, as shown in FIG. 2, the napkin width direction inner side of the non-woven fabric 6 for gathering is folded back twice, and this double sheet portion is outside the napkin width direction with the inner edge of the inner joint portion 22 as the base end. Then, the loop-shaped three-dimensional gathers 20 having a hollow cross-section are formed by bending the loop on the standing side protruding from the surface and joining the outer joint 23 to the surface side again. By continuously folding the outer edge portion of the outer joint portion 23 as an upright base end to the upright side protruding from the surface, a free end-shaped three-dimensional gather 21 is formed with the folded portion of the double sheet portion as the free end tip. ing. Each three-dimensional gather BS is formed with a width substantially equal to the separation width from the inner edge of the inner joint portion 22 to the outer edge of the outer joint portion 23 in a cross-sectional view shown in FIG.

  The crotch region A1 is a region including at least the body fluid discharge site H, where the rear end is near the start of the groin groove and the front end is near the lower abdomen.

  Further, as shown in FIG. 3, in the rear region A2 and the front region A3 from the crotch region A1, the joint portion 24 that joins the distal end portion of the free end-shaped three-dimensional gather 21 to the surface side of the loop-shaped three-dimensional gather 20. Is provided, and the standing end of the free end-shaped three-dimensional gather 21 is suppressed.

  As shown in FIG. 4, at the rear end of the rear region A2 and the front end of the front region A3, the loop-shaped three-dimensional gather 20 and the free-end three-dimensional gather 21 are stacked so as to be folded. By appropriately joining the joints 30 and 30, the loop-shaped three-dimensional gather 20 and the free end-shaped three-dimensional gather 21 are prevented from standing up. When the loop-shaped three-dimensional gather 20 is folded, it is desirable to fold the loop-shaped three-dimensional gather 20 so as not to protrude inward from the standing base end in the vicinity of the inner joint portion 22, and to allow all slacks resulting from the folding to project outward. Thereby, in the crotch part area | region A1 etc., it can prevent falling inward by the loop-shaped solid gather 20 being pressed on a body.

  On the other hand, as shown in FIGS. 2 and 3, each of the loop-shaped three-dimensional gathers 20 and the free-end three-dimensional gathers 21 is an upright projecting from the surface at a predetermined position inside the double sheet of the gather forming nonwoven fabric 6. A plurality of elastic elastic members 25..., 26... Are fixed to the side intermediate portion at both ends or appropriate positions in the longitudinal direction.

  In this way, by configuring the three-dimensional gather BS from the loop-shaped three-dimensional gather 20 and the free end-shaped three-dimensional gather 21, even when the three-dimensional gather BS and the body move unexpectedly due to the movement of the body, The free end-shaped three-dimensional gather 21 having a high degree of freedom follows the body and does not create a gap with the body, so that stable adhesion can be ensured. For this reason, it comes to be excellent in the body fluid leakage prevention effect.

  Further, at the time of normal wearing, the loop-shaped three-dimensional gather 20 stably maintains the close contact with the body, so that the leakage preventing effect is excellent.

  Furthermore, since the free end-shaped three-dimensional gather 21 is formed outside the loop-shaped three-dimensional gather 20, it is possible to suppress the free-end three-dimensional gather 21 from falling to the absorber side (inner side in the napkin width direction), and the function of absorbing bodily fluids. There is no risk of decline.

  On the other hand, as shown in FIG. 2, in the crotch region A1, the standing height T2 of the free end-shaped three-dimensional gather 21 is preferably formed higher than the standing height T1 of the loop-shaped three-dimensional gather 20 (T1, T2). These are the heights from the surface of the sanitary napkin 1 to the standing top.) Thereby, even if there is a movement of the body that greatly deviates from the loop-shaped three-dimensional gather 20, the free end-shaped three-dimensional gather 21 can follow the movement of the body, so that it is difficult to form a gap with the body.

  In addition, it is preferable that the free end-shaped three-dimensional gather 21 is formed so as to cover more than half of the loop-shaped three-dimensional gather 20 in the width direction in a state where the free-end three-dimensional gather 21 is tilted to the surface side of the loop-shaped three-dimensional gather 20.

  On the other hand, as shown in FIG. 3, when joining the tip of the free end-shaped three-dimensional gather 21 to the surface side of the loop-shaped three-dimensional gather 20 in the rear region A2 and the front region A3 of the crotch region A1, As in the illustrated example, it is preferable to adjust the position of the joint portion 24 so that a space 27 that extends slightly outward is formed between the free end-shaped solid gather 21 and the loop-shaped solid gather 20. Thereby, since the top part in the height direction of the integrated three-dimensional gather BS is formed outside the center of the width direction of the three-dimensional gather BS, when this three-dimensional gather BS is pressed against the body, it is entirely outside. Since it deform | transforms so that it can be pushed open, it can prevent that solid gather BS falls down inside, and can prevent that the absorption surface of a bodily fluid is narrowed and an absorption function falls.

  As another form example of the three-dimensional gather BS, the loop-shaped three-dimensional gather 20 and the free end-shaped three-dimensional gather 21 are formed by the same continuous non-woven fabric 6 for forming the gathers, but as shown in FIG. The loop-shaped three-dimensional gather 20 and the free end-shaped three-dimensional gather 21 can also be configured by separate sheets. Specifically, the free end-shaped three-dimensional gather forming nonwoven fabric 6A extending from the outside in the napkin width direction to the inside is bent to the upright side protruding from the surface at the inside position, and its tip is folded back twice. A free end-shaped three-dimensional gather 21 is formed by the double sheet portion. Further, the folded base end side of the loop-shaped three-dimensional gather forming nonwoven fabric 6B folded back into a double sheet is interposed between the liquid-permeable surface sheet 3 and the inner folded portion of the free end-shaped three-dimensional gather forming nonwoven fabric 6A. , A standing side protruding from the surface at the inner side in the width direction and folded in a loop shape on the outer side in the width direction of the napkin, the folded end of the double sheet is folded inward, and the bent portion is the free end-shaped three-dimensional gather The inner end position 21 is joined to the surface of the free end-shaped three-dimensional gather forming nonwoven fabric 6A.

  The nonwoven fabric 6A for forming free end-shaped gathers and the nonwoven fabric 6B for forming loop-shaped three-dimensional gathers may have the same properties, but the nonwoven fabric 6B for forming loop-shaped three-dimensional gathers has hydrophilicity and has a free end shape. The nonwoven fabric 6A for forming a three-dimensional gather can have water repellency. Thus, menstrual blood flowing from the body fluid discharge site H side can be absorbed by the loop-shaped three-dimensional gather 20 having hydrophilicity inside, and the loop-shaped three-dimensional gather 20 is formed by the free end-shaped three-dimensional gather 21 having water repellency on the outside. The body fluids absorbed in this can be prevented from seeping out and leaking.

  As the nonwoven fabrics 6A and 6B, those having hydrophilicity or water repellency can be used. As the hydrophilic non-woven fabric, a material having a hydrophilic property by using regenerated fibers such as rayon and cupra, natural fibers such as cotton, or olefins such as polyethylene or polypropylene, polyesters, polyamides, for example, is used. It is possible to use a hydrophilic treated non-woven fabric made of fibers obtained by surface-treating synthetic fibers such as a hydrophilic agent to impart hydrophilicity. In addition, as the water-repellent nonwoven fabric, a water-repellent nonwoven fabric coated with a silicon-based, paraffin-based, alkylchromic chloride-based water repellent, or the like can be used.

  In addition, as a nonwoven fabric extended to the outer edge of the sanitary napkin 1, it is good also as the loop-shaped solid gather forming nonwoven fabric 6B instead of the free end-shaped solid gather forming nonwoven fabric 6A, and it is different from these nonwoven fabrics 6A and 6B. A body nonwoven fabric may be provided.

  As shown in FIG. 6, a thin sheet-like absorber 28 can be disposed along the longitudinal direction of the member at least on the inner side in the width direction of the loop-shaped three-dimensional gather 20. In the example of illustration, the said sheet-like absorber 28 is interposed between the double sheets of the loop-shaped three-dimensional gather forming nonwoven fabric 6B folded back into a double sheet. In the illustrated example, the sheet-like absorbent body 28 is provided on the inner side in the width direction, which is substantially half of the loop-shaped three-dimensional gathers 20, but may also be provided so as to extend to the outer side in the width direction. At this time, a liquid-permeable material is used as the loop-shaped three-dimensional gather forming nonwoven fabric 6B, or, as shown in FIG. 7, the loop-shaped three-dimensional gather forming nonwoven fabric 6B at the portion where the sheet-like absorbent body 28 is disposed. It is preferable to provide a plurality of apertures 29, 29. In the illustrated example, the openings 29, 29... Are provided in the nonwoven fabric on the surface side of the sheet-like absorbent body 28 in the double sheet loop-shaped three-dimensional gather forming nonwoven fabric 6 </ b> B.

  By disposing the sheet-like absorbent body 28, menstrual blood or the like flowing from the body fluid discharge site H side can be reliably absorbed by the loop-shaped three-dimensional gather 20, and opened to the loop-shaped three-dimensional gather forming nonwoven fabric 6B. By providing the holes 29, 29 ..., the absorption effect can be further enhanced.

  As the sheet-like absorber 28, it is desirable to use a thin absorber such as airlaid, for example, preferably having a thickness of 1 mm or less. Further, as the sheet-like absorber 28, crepe paper or the like may be used.

  When the sheet-like absorbent body 28 is disposed almost in the inner half of the loop-shaped three-dimensional gather 20, the free end-shaped three-dimensional gather 21 is tilted to the surface side of the loop-shaped three-dimensional gather 20 as described above, and the free end-shaped Forming the three-dimensional gather 21 so as to cover more than half of the loop-shaped three-dimensional gather 20 in the width direction is more effective in preventing the body fluid absorbed by the sheet-like absorbent body 28 from leaking outward in the width direction.

DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Liquid-impermeable back sheet, 3 ... Liquid-permeable surface sheet, 4 ... Absorber, 5 ... Crepe paper, 6 ... Non-woven fabric for gather formation, 20 ... Loop-shaped three-dimensional gather, 21 ... Free end shaped standing gathers, 25, 26 ... resilient and elastic members, BS ... standing gathers, W ... wing-shaped flaps, W B _... second wing-shaped flaps

Claims (7)

In the absorbent article in which the absorbent body is interposed between the liquid-permeable top sheet and the back sheet, and the three-dimensional gathers that stand on the use surface side along the longitudinal direction are formed on both sides of the use surface side,
The three-dimensional gather is composed of a loop-shaped three-dimensional gather having a hollow cross section at least in a crotch region including a body fluid discharge site, and a free-end three-dimensional gather having a free end at the outer end in the width direction. In addition, the absorbent article is characterized in that the free end-shaped three-dimensional gather tip is joined to the surface side of the loop-shaped three-dimensional gather in the rear and front regions from the crotch region . The absorbent article of upright height of the free end shaped standing gathers the claims 1 Symbol mounting is formed higher than the standing height of the loop-shaped standing gather. In a state where the free end shaped three-dimensional gathers tilted to the surface side of the loop three-dimensional gathers, the free end shaped standing gathers the claims are formed to cover the above width direction half of the looped standing gather 1, 2 The absorbent article in any one. The absorbent article according to any one of claims 1 to 3, wherein the loop-shaped three-dimensional gather and the free end-shaped three-dimensional gather are each constituted by separate sheets. The absorbent article according to claim 4, wherein the loop-shaped three-dimensional gather has hydrophilicity, and the free end-shaped three-dimensional gather is constituted by a sheet having water repellency. The absorbent article according to any one of claims 1 to 5, wherein a sheet-like absorbent body is disposed along the longitudinal direction of the member at least inside the loop-shaped three-dimensional gather. The absorbent article according to claim 6 , wherein a plurality of openings are provided in a loop-shaped three-dimensional gather at a portion where the sheet-like absorbent body is disposed.

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