JP2010042061A - Absorbent articles - Google Patents

Abstract

[PROBLEMS] To prevent a sense of incongruity at the time of wearing since a joint part due to the formation of a leak-proof wall is not exposed on the skin contact surface, to improve fit to a wearer, to prevent twisting and to prevent leakage. To provide an absorbent article that can be used.
A sanitary napkin according to the present invention includes an absorbent main body having a top sheet, a back sheet, and an absorbent body, and a loop-shaped leak-proof wall having hollow loops at both longitudinal sides thereof. It has. The leak-proof wall 7 stands in a hollow loop shape in the excretion part region a. The joint portion 8 of the loop-shaped leak-proof wall 7 in the excretion portion region a is formed by joining one side portion 6a of the stretchable sheet 6 to the skin contact surface side in the one side portion 5a in the longitudinal direction of the topsheet 2. Has been. In the sanitary napkin 1, the joining portion 8 is joined with the outer surface of the loop of the leak-proof wall 7 (the sheet 61 on the skin contact surface side) facing the surface sheet 2, and the hollow leak-proof wall 7 is formed. Become.
[Selection] Figure 2

Description

  The present invention relates to absorbent articles such as sanitary napkins and incontinence pads.

Conventionally, sanitary napkins provided with leak-proof walls on both side edges in the longitudinal direction are known in order to prevent side leakage in which body fluids such as menstrual blood being worn move in the width direction and leak from the side edges. ing.
Moreover, in order to improve the fit of the leak-proof wall to the wearer, a hollow loop-shaped leak-proof wall is known. For example, in Cited Document 1, the fit is high, and even when stress from the left and right such as the movement of the wearer's foot is applied, it is buffered with a hollow loop shape, and the sanitary napkin is not twisted, A sanitary napkin having a hollow loop-shaped leak-proof wall having a high leak-proof property is disclosed.

  However, in the sanitary napkin described in Cited Document 1, the joint between the elastic sheet forming the loop-shaped leak-proof wall and the sanitary napkin body is exposed on the skin contact surface of the sanitary napkin. And may cause discomfort when worn.

Japanese Patent Laid-Open No. 11-299821

  Accordingly, the object of the present invention is to provide a hollow loop-shaped leak-proof wall that hardly causes a sense of incongruity when worn, and to provide a hollow loop-shaped leak-proof wall, thereby improving the fit to the wearer, preventing twisting, An object of the present invention is to provide an absorbent article excellent in leakage prevention.

  The present invention includes a vertically long absorbent main body comprising a top sheet disposed on the skin contact surface side, a back sheet disposed on the non-skin contact surface side, and an absorbent body interposed between both sheets, and the absorbent A leak-proof article formed on both sides in the longitudinal direction of the main body, wherein each of the leak-proof walls has one side and the other side in the longitudinal direction of the stretchable sheet. Joined to the main body at the joint, and formed by joining the stretchable sheet to the absorbent main body at the front and rear of the excretory part region, in the excretion part region, standing in a hollow loop shape, The joint part of each of the loop-shaped leak-proof walls in the excretory part region is joined to the one side part of the stretchable sheet on the skin contact surface side in the side part in the longitudinal direction of the absorbent main body, On the non-skin contact surface side at the longitudinal side of the absorbent body The other side portion of the stretchable sheet is joined, and the joint portion of the one side portion of the stretchable sheet is hollow by joining the outer surface of the loop of the leak-proof wall toward the topsheet. The above object is achieved by providing an absorbent article in which a loop-shaped leak-proof wall is formed.

  According to the absorbent article of the present invention, since the joint portion associated with the formation of the loop-shaped leak-proof wall is not exposed on the skin contact surface of the absorbent article, such a loop is unlikely to occur when worn. Since the shape of the leak-proof wall is provided, it is possible to improve fit to the wearer and to prevent twisting and leak prevention.

  Hereinafter, a preferred embodiment of a sanitary napkin that is an absorbent article of the present invention will be described with reference to FIGS.

As shown in FIG. 1, the sanitary napkin 1 of the first embodiment is formed symmetrically with respect to a center line CL extending in the longitudinal direction of the sanitary napkin 1.
Therefore, in the following, mainly the left side configuration of the sanitary napkin 1 will be described in detail, the right side configuration will not be described as appropriate, and the right side component corresponding to the left side component will be denoted by a dash (' ) Is attached.

The absorbent article (sanitary napkin) 1 according to the present embodiment includes, as shown in FIGS. 1 to 3, a top sheet 2 disposed on the skin contact surface side and a back sheet disposed on the non-skin contact surface side. 3 and a substantially vertically long absorbent main body 5 having an absorbent body 4 interposed between both sheets 2 and 3, and leak-proof walls formed on both longitudinal sides 5a and 5a 'of the absorbent main body 5, respectively. 7, 7 '.
As shown in FIGS. 1 and 2, each of the leak-proof walls 7, 7 ′ is formed by joining one side 6 a and the other side 6 b in the longitudinal direction of the stretchable sheets 6, 6 ′ to the absorbent main body 5, Joined at 8D and formed by joining the elastic sheets 6 and 6 'to the absorbent main body 5 in front and rear of the excretory part region a, and standing up in a hollow loop shape in the excretion part region a Yes.
The joint portions 8 of the loop-shaped leak-proof walls 7 and 7 ′ in the excretory region a are on the skin contact surface side in the side portion 5 a in the longitudinal direction (CL direction; direction parallel to the CL line) of the absorbent main body 5. The one side part 6a of the elastic sheets 6, 6 'is joined to the upper part. The joint portions 8D of the loop-shaped leak-proof walls 7 and 7 ′ are arranged on the non-skin contact surface side of the side portion 5a in the longitudinal direction (CL direction) of the absorbent main body 5 and the elastic sheets 6 and 6 ′. The side part 6b is joined and formed.
1 and 2, the sanitary napkin 1 of the present embodiment is such that the joint portion 8 of the one side portion 6a of the stretchable sheets 6, 6 'is the outer surface of the loop of the leak-proof walls 7, 7'. By joining the sheet 61 on the skin contact surface side toward the top sheet 2, hollow loop-shaped leak-proof walls 7 and 7 ′ are formed.

  Here, the “excretion part region a” means an area that is in contact with the body fluid excretion part of the wearer, and is in the product longitudinal direction (CL direction) that occurs when the sanitary napkin is folded into the individual form. With respect to two perpendicular folding lines, the area is the same as or narrower than the area surrounded by the first folding line and the second folding line, counting from the front end in the longitudinal direction of the sanitary napkin. When the sanitary napkin has a long product length and three fold lines are generated, the product is counted from the front end in the longitudinal direction of the product or from the front end in the longitudinal direction of the product. An area that is the same as or narrower than the area surrounded by the first fold line and the third fold line. As shown in FIG. 1, the excretion part area | region a in the sanitary napkin 1 of this embodiment is narrower than the area | region enclosed by the 1st fold line a1 and the 2nd fold line a2 which arise in the case of what is called a two-fold individual form. It is an area.

  “Standing” means a state in which the upper surfaces of the hollow loop-shaped leak-proof walls 7, 7 ′ are located above the surface of the surface sheet 2, and “standing upright” means “leak-proofing wall” This means that the uppermost part of 7, 7 ′ is located above the surface of the topsheet 2.

  The sanitary napkin 1 of this embodiment will be described in detail. The sanitary napkin 1 of this embodiment is brought into contact with the body fluid excretion part of the wearer in the longitudinal direction (CL direction) as shown in FIG. The excretory part area a has a rear area b, an excretion part area a, and a front area c in front of the excretion part area a. The leak-proof wall 7 stands in a loop shape at least in the excretion part region a. Thus, the portion of the leak-proof wall 7 standing in a loop shape is a region that is wider in the longitudinal direction (CL direction) than the excretory region a, and in the sanitary napkin 1A of the present embodiment, In other words, the region is substantially the same size as the region surrounded by the first fold line a1 and the second fold line a2 that are generated in the so-called two-fold individual form. The sanitary napkin 1 of this embodiment is provided with the top sheet 2, the back sheet 3, and the absorber 4, as shown in FIGS. 1-4, and a pair of embossing groove | channel which fixes the top sheet 2 and the absorber 4 9 is provided. The embossed grooves 9 extend in the longitudinal direction on both sides of the sanitary napkin 1. Each of the top sheet 2 and the back sheet 3 has a larger outer diameter than the absorber 4. The top sheet 2 and the back sheet 3 extend from both ends in the longitudinal direction of the absorbent body 4 at both ends in the longitudinal direction of the sanitary napkin 1, and the extending portions are joined to each other by heat sealing or the like. 5 is formed. On the surface of the back sheet 3, an adhesive is applied to form a shift stopper (not shown). These configurations are the same as the conventional products.

Next, the loop-shaped leak-proof wall 7 of the sanitary napkin 1 of the present embodiment will be described.
In the sanitary napkin 1 of the present embodiment, as shown in FIGS. 1 to 4, the belt-like stretchable sheet 6 extends along the longitudinal direction on the side portion 5 a in the longitudinal direction (CL direction) of the absorbent main body 5. Disposed and fixed, and by contraction of the elastic sheet 6, a hollow loop-shaped leak-proof wall 7 erected on the skin contact surface side is formed.

  In the sanitary napkin 1 of the present embodiment, the stretchable sheet 6 is a composite sheet provided with stretchability by the elastic member 63. The elastic sheet 6 includes a sheet 61 on the skin contact surface side, a sheet 62 on the non-skin contact surface side, and a plurality of elastic members between the sheets 61 and 62, as shown in FIGS. 63 is formed. The sheet 61 on the skin contact surface side and the sheet 62 on the non-skin contact surface side are belt-shaped (rectangular) sheets of the same shape and size, and the stretchable sheet 6 is a sheet on the skin contact surface side. Between the sheet 61 and the sheet 62 on the non-skin contact surface side, a thread-like elastic member 63 is disposed in the longitudinal direction (CL direction) of the sheets 61 and 62, and each of the plurality of elastic members 63 is a belt-like sheet. 61 and 62 are equally arranged in the width direction (direction orthogonal to the CL direction). As shown in FIG. 1, each of the plurality of elastic members 63 is disposed longer than the excretion part region a that comes into contact with the body fluid excretion part of the wearer when the leak-proof wall 7 is formed.

  As shown in FIGS. 2 to 4, the elastic sheet 6 has a sheet 61 on the skin contact surface side of one side portion 6 a in the longitudinal direction of the elastic sheet 6 so as to sandwich the top sheet 2 and the absorbent body 4. The surface is joined to the surface on the skin contact surface side of the topsheet 2 constituting the absorbent main body 5 to form a joint 8. Moreover, the other side part 6b of the longitudinal direction of the expansion-contraction sheet 6 is distribute | arranged between the absorber 4 and the back surface sheet 3, as shown in FIGS. 2-4, and the non-skin contact surface side of the other side part 6b The surface of the sheet 62 is bonded to the surface of the absorbent body 4 on the non-skin contact surface side to form a bonded portion 8D. Moreover, the elastic sheet 6 has a part joined to the absorptive main body 5 in the front area | region c ahead of the excretion part area | region a and the back rear area | region b. Thus, since the belt-like stretchable sheet 6 is disposed and joined along the longitudinal direction to the side portion 5a in the longitudinal direction (CL direction) of the absorbent main body 5, the stretchable sheet 6 contracts. As a result, the leak-proof wall 7 having a portion standing in a hollow loop shape is formed. Joining can be performed by heat sealing, an adhesive, or the like. In the present embodiment, the joining portion 8 is formed by heat sealing, and the joining between the sheet 62 on the non-skin contact surface side of the stretchable sheet 6 and the absorbent body 4 is performed by an adhesive. Moreover, in this embodiment, joining with the surface sheet 2 and the absorber 4 is performed with the adhesive agent. Moreover, in this embodiment, joining (joining part 8D) of the sheet | seat 61 of the skin contact surface side of the elastic sheet 6 and the back surface sheet 3 is performed by heat sealing.

  As shown in FIG. 2, several of the plurality of elastic members 63 constituting the stretchable sheet 6 are joined portions of the sheet 61 on the skin contact surface side and the surface sheet 2 at least in the excretory region a. 8 is arranged on the inner side of the leak-proof wall 7 (near the center line CL of the sanitary napkin 1) from the position of the outer side edge (outer edge 8b) in the longitudinal direction (CL direction). Furthermore, in the sanitary napkin 1 of the present embodiment, as shown in FIG. 2, at least in the excretion part region a, the leakage prevention wall 7 has a side edge (inner side in the longitudinal direction (CL direction) of the joint part 8. It is formed from the edge 8a) to the inside of the sanitary napkin 1 (near the center line CL of the sanitary napkin 1). Therefore, as shown in FIG. 2, several of the plurality of elastic members 63 are provided at least in the excretion portion region a from the position of the inner edge 8 a of the joint portion 8 to the inside of the leak-proof wall 7 (sanitary napkin 1 near the center line CL).

The leak-proof wall 7 is at least one of the front and rear of the loop-shaped part, in the present embodiment, as shown in FIG. The inner surfaces of the loop-shaped leak-proof wall 7 positioned above the joint portion 8 between the sheet 61 on the skin contact surface side and the surface sheet 2 constituting the stretchable sheet in each of the portion and the second folding line a2 That is, the surfaces of the sheet 62 on the non-skin contact surface side of the stretchable sheet 6 forming the leak-proof wall 7 are joined to each other, and the inner loop 71 is located inward in the width direction from the inner edge 8a in the longitudinal direction of the joined portion 8. In addition, an outer loop 72 is provided on the outer side in the width direction from the outer edge 8 b in the longitudinal direction of the joint portion 8. As shown in FIG. 3, the inner loop 71 of the leak-proof wall 7 has inner surfaces of the leak-proof wall 7 located on the inner side (near the center line CL of the sanitary napkin 1) from the inner edge 8 a of the joint portion 8, that is, The sheet 62 is formed without joining the surfaces of the sheet 62 on the non-skin contact surface side of the stretchable sheet 6 and has a circular cross section.
As described above, the leakage prevention wall 7 is not positively bent but bent at each of the first folding line a1 and the second folding line a2 as shown in FIG. .

The length of the sanitary napkin 1 of the present embodiment is preferably 240 mm to 440 mm, and the length between the first fold line a1 and the second fold line a2 generated in the case of the two-fold individual packaging is physiology The length is in the range of 2% to 60% with respect to the length of the napkin 1 for use.
The length of the circular cavity of the inner loop 71 of the leak-proof wall 7 of the sanitary napkin 1 of the present embodiment in the width direction (perpendicular to the longitudinal centerline CL) is preferably 5 mm to 40 mm.

  As shown in FIGS. 1 and 4, the composite sheet forming the leak-proof wall 7 is a front and rear portion of the loop-shaped portion of the leak-proof wall 7, in this embodiment, two folded sheets. The elastic member 63 is not disposed and the stretchable sheet 6 is not formed in front of the portion of the first folding line a1 generated in the form and behind the portion of the second folding line a2. As shown in FIGS. 1 and 4, the skin contact surface side sheet 61 and the non-skin contact surface side sheet 62 that form the composite sheet are in a region where the elastic member 63 is not disposed. It is positively bent so as not to form a hollow loop-shaped leak-proof wall 7 that protrudes sideways. The composite sheet forming the leak-proof wall 7 extends from both ends in the longitudinal direction of the absorbent body 4 at both ends in the longitudinal direction of the sanitary napkin 1 like the top sheet 2 and the back sheet 3. The protruding portion is bonded and fixed by heat sealing or hot melt.

A material for forming the sanitary napkin 1 of the present embodiment will be described.
As the said surface sheet 2, the said back surface sheet 3, and the said absorber 4, if normally used for absorbent articles, such as a sanitary napkin, it can use without a restriction | limiting especially.

  The stretchable sheet 6 preferably has stretchability, stands up in a loop shape at least in the excretion region a, and has rigidity that can be freely deformed while maintaining this loop shape. Furthermore, as the stretchable sheet 6 that forms the leak-proof wall 7, the inner part 8a of the joint 8 is located inside the first fold line a1 and the second fold line a2 that are generated in the case of the two-fold individual packaging. When the inner loop 71 is formed without joining the inner surfaces of one side (near the center line CL of the sanitary napkin 1), it is more preferable to have rigidity that maintains the circular shape of the longitudinal section of the loop.

The stretchable physical property of the stretchable sheet 6 is preferably 50 to 500 gf / 25 mm, more preferably 100 to 300 gf / 25 mm in width when stretched 5 to 50% in the longitudinal direction (CL direction) of the sanitary napkin 1.
Next, the rigidity of the stretchable sheet 6 is preferably 5 to 200 gf, more preferably 10 to 100 gf in terms of bulk softness value. If the bulk softness value is less than 5 gf, the loop shape is too soft to be stable, and if it exceeds 200 gf, it is not preferable because it does not deform freely or becomes uncomfortable when worn.
Bulk softness can be measured as follows. That is, the elastic sheet is cut out as a strip having a size of 150 mm in the longitudinal direction and 30 mm in the width direction, and both ends of the strip in the longitudinal direction are overlapped with each other by 5 mm so as to form a cylindrical shape. Two places are fixed with staples at a position of about 10 mm from the upper and lower edges of the cylinder. Next, the sample is compressed with a Tensilon compression tester at a compression rate of 10 mm / min, and the maximum compressive strength until the cylinder buckles is measured. The average value of 5 measurements is taken as the bulk softness value.

  Examples of the sheet material of the stretchable sheet 6 include a stretchable film, a stretchable nonwoven fabric, a stretchable fabric, or a laminated sheet thereof. Specifically, the material itself made of natural rubber, polyurethane, polystyrene-polyisoprene copolymer, polystyrene-polybutadiene copolymer, polyethylene-α olefin copolymer such as polyethylene-ethyl acrylate, etc. is a material having elasticity. In addition, as described above, there is a composite sheet in which an elastic member 63 in which these stretchable materials are thread-like is disposed between the sheet 61 on the skin contact surface side and the sheet 62 on the non-skin contact surface side.

  The sheet 61 on the skin contact surface side of the stretchable sheet 6 is preferably a thermoplastic nonwoven fabric made of polyethylene / polyester, polyethylene / polypropylene, or polypropylene in order to improve the touch. The same applies to the sheet 62 on the non-skin contact surface side. For such a thermoplastic nonwoven fabric, it is preferable to use fibers crimped so that the nonwoven fabric itself has stretchability. When using a non-crimped nonwoven fabric made of fibers that are not crimped for the sheet 61 on the skin contact surface side and the sheet 62 on the non-skin contact surface side, the elastic member 63 is stretched to a predetermined stretch ratio in advance, A composite sheet may be created by adhering it to the sheet 61 on the skin contact surface side and the sheet 62 on the non-skin contact surface side by hot melt, heat sealing, or the like. Each of the plurality of elastic members 63 of the stretchable sheet 6 is arranged at equal intervals between the sheet 61 on the skin contact surface side and the sheet 62 on the non-skin contact surface side.

  Further, the stretchable sheet 6 may be colored, and the color is imparted to any or all of the sheet on the skin contact surface side, the non-skin contact surface side, and the elastic member of the stretchable sheet 6. May be.

Next, the effect at the time of using the sanitary napkin 1 of embodiment of this invention mentioned above is demonstrated.
The sanitary napkin 1 of this embodiment is equipped with a pair of hollow loop-shaped leak-proof walls 7 and 7 ', as shown in FIGS. 1-4, and each of the loop-shaped leak-proof walls 7 and 7' is each. As shown in FIGS. 2 to 4, the longitudinal direction (CL direction) of the stretchable sheets 6, 6 ′ is on the skin contact surface side in the one side portion 5 a of the longitudinal direction (CL direction) of the absorbent main body 5. It is formed by joining the outer surfaces of the one side portion 6a. Thus, in the excretion part area | region a, since the site | part (joint part 8) of joining accompanying formation of the leak-proof walls 7 and 7 'is not exposed on the surface sheet 2 by the side of a skin contact surface, It is difficult to produce a sense of discomfort

  Moreover, the sanitary napkin 1 of the present embodiment is such that the joint portion 8 is joined linearly from the front to the rear of the excretion portion region a and the first folding line a1 generated in the case of the two-fold individual form. The inner surfaces of the leakage prevention walls 7 from the inner edge 8a of the joint 8 are not joined to each other and the second folding line a2 is formed, and an inner loop 71 is formed. It is not folded and bent. Therefore, the stretchable sheets 6 and 6 ′ are easily bent due to the rigidity of the stretchable sheets 6 and 6 ′, and when the stretchable sheets 6 and 6 ′ contract, at least a pair of hollow leak-proof walls 7 and 7 located in the excretion region a. As shown in FIG. 2, 'stands up in a loop shape having a substantially circular cross section. The pair of hollow leak-proof walls 7 and 7 ′ located in the excretion part region a are raised in a loop shape, thereby improving fit to the wearer and stress from the left and right such as movement of the wearer's foot. Even when it is applied, it is buffered by a hollow loop shape, and the sanitary napkin 1 is not twisted. Therefore, the sanitary napkin 1 is a napkin with high leakage prevention properties.

  In the sanitary napkin 1 of the present embodiment, several of the elastic members 63 of the stretchable sheets 6 and 6 ′ forming the leak-proof walls 7 and 7 ′ are the sheets 61 on the skin contact surface side. A pair of hollows located at least in the excretion region a because the inner wall 8a of the joint 8 between the top sheet 2 and the surface sheet 2 is disposed on the inside of the leak-proof wall 7 (close to the center line CL of the sanitary napkin 1). As shown in FIG. 2, the leak-proof walls 7 and 7 ′ stably stand up in a loop shape having a substantially circular cross section. Further, when the stretchable sheet 6 is colored, the shape of the stretchable sheet is easily recognized, so that the standing impression can be improved.

  The absorbent article of the present invention is not limited to the sanitary napkin of the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention.

  For example, in the sanitary napkin 1 of the above-described embodiment, the top sheet 2 and the back sheet 3 do not extend from both ends in the width direction of the absorbent body 4, and the other side portion 6 b in the longitudinal direction of the stretchable sheet 6. The surface of the sheet 62 on the non-skin contact surface side is bonded to the surface on the non-skin contact surface side of the absorber 4, but the top sheet 2 and the back sheet 3 are both ends in the width direction of the absorber 4. The surface of the sheet 62 on the non-skin contact surface side in the other side portion 6b may be bonded to the surface on the skin contact surface side of the surface sheet 2 of the extended portion.

  Moreover, in the sanitary napkin 1 of the above-described embodiment, the top sheet 2 and the back sheet 3 do not extend from both ends in the width direction of the absorbent body 4, and the skin of the one side portion 6 a of the stretchable sheet 6. The sheet 61 on the contact surface side is bonded to the top sheet 2 positioned above the absorber 4, but the top sheet 2 and the back sheet 3 are extended from both ends in the width direction of the absorber 4 and bonded. The sheet 61 on the skin contact surface side of the one side portion 6a of the stretchable sheet 6 may be joined to the surface sheet 2 of the extended portion.

  Moreover, in the sanitary napkin 1 of the above-described embodiment, an adhesive is provided on the surface of the back sheet 3 to stop the shift, but a wing is provided on the back sheet 3 side, thereby facilitating mounting and fixing. It is also good.

  In addition to sanitary napkins, the absorbent article of the present invention can be suitably used for disposable diapers, incontinence pads, panty liners, and the like.

It is a perspective view of the sanitary napkin which is embodiment of this invention. It is the X1-X1 sectional view taken on the line of the sanitary napkin shown in FIG. It is the X2-X2 sectional view taken on the line of the sanitary napkin shown in FIG. It is the X3-X3 sectional view taken on the line of the sanitary napkin shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sanitary napkin 2 Top sheet 3 Back sheet 4 Absorber 5 Absorbent main body 5a, 5a 'Both sides 6 and 6' of an absorptive main body in the longitudinal direction Elastic sheet 61 Sheet on skin contact surface side 62 Non-skin contact surface Side sheet 63, 63 'Elastic member 6a One side part 6b Other side part 7, 7' Leak-proof wall 71 Inner loop 72 Outer loop 8, 8D Joint part 8a Inner edge 8b Joint part outer edge 9 Embossed groove a Excretion area b Rear area c behind excretion area a Front area forward of excretion area a a1 1st fold line a2 2nd fold line CL Center line extending in the longitudinal direction of sanitary napkin

Claims (4)

Longitudinal absorbent main body comprising a top sheet disposed on the skin contact surface side, a back sheet disposed on the non-skin contact surface side, and an absorber interposed between both sheets, and the longitudinal direction of the absorbent body An absorbent article provided with leak-proof walls formed on both sides of the
Each of the leak-proof walls joins one side part and the other side part in the longitudinal direction of the elastic sheet to the absorbent main body at the joint part, and also absorbs the elastic sheet in front and rear of the excretion part region. Formed by joining to the main body, standing in the form of a hollow loop in the excretion area,
The joint part of each of the loop-shaped leak-proof walls in the excretory part region is joined to the one side part of the stretchable sheet on the skin contact surface side in the side part in the longitudinal direction of the absorbent main body, The other side portion of the stretchable sheet is joined to the non-skin contact surface side of the side portion in the longitudinal direction of the absorbent main body, and the joint portion of the one side portion of the stretchable sheet is formed of the leak-proof wall. An absorbent article in which a hollow loop-shaped leak-proof wall is formed by bonding an outer surface of a loop toward the surface sheet.   The elastic sheet is provided with elasticity by an elastic member, and the elastic member is more than the outer edge in the longitudinal direction of the joint portion between the top sheet of the absorbent main body and the one side part of the elastic sheet. The absorptive article according to claim 1 which exists in the inside of a leak-proof wall.   Each of the leak-proof walls is formed from the inner edge in the longitudinal direction of the joint portion between the top sheet of the absorbent main body and the one side portion of the stretchable sheet to the inside of the absorbent article, The absorbent article according to claim 2, wherein the elastic member is present inward of the leak-proof wall from the inner edge.   Each of the leak-proof walls has an inner edge in a longitudinal direction of a joint portion between the top sheet of the absorbent main body and the one side portion of the stretchable sheet at least one of a front portion and a rear portion of a loop-shaped portion. The inner surfaces of the leak-proof wall in the loop shape located above the joint portion are joined to each other, from the inner edge in the longitudinal direction of the joint portion. The absorbent article according to any one of claims 1 to 3, wherein an inner loop and an outer loop are formed outward in the width direction from an outer edge in the longitudinal direction of the joint portion inward in the width direction of the absorbent article. .

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