JPH08224271A - Absorbent articles - Google Patents

Abstract

PURPOSE: To lessen the possibility of the occurrence of lateral leakage by successively providing the non-skin contact surface side of absorbent articles with flaps arranged in both right and left side parts of a central absorber part, folding these flaps toward the top sheet side of the central absorber part to form leakproof walls and successively providing both right and left side edges thereof with wing parts. CONSTITUTION: A sanitary napkin 1 is provided with the flaps 20 in both right and left side parts of the central absorber part 10 arranged with the absorber between a liquid permeable top sheet 11 and a liquid impermeable back sheet 12. The flaps 20 are successively dispose on the non-skin contact surface side of the sanitary napkin l and are folded toward the top sheet 11 side of the central absorber part 10, by which the flaps are formed as the waterproof walls 21 existing at both right and left side edges of the central absorber part 10. The flaps are folded back toward the outer side of the central absorber part 10, by which the leakproof surfaces 24 are formed. The non-skin contact surface side at both right and left side edges of the central absorber part 10 are successively provided with the wing parts 30 for fixing the sanitary napkin 1 at the time of use.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to absorbent articles such as sanitary napkins that are worn in contact with the skin to absorb body fluids, and more particularly, absorbent articles excellent in side leakage prevention performance. It is about.

[0002]

2. Description of the Related Art Conventionally, various absorbent articles such as disposable diapers and sanitary napkins have been proposed and put to practical use, but they are worn by users due to side leakage. Since there is a problem that it may be contaminated and this gives a user an unpleasant feeling, various improvements have been made to solve this problem.

For example, leak-proof walls are formed on both sides in the longitudinal direction of the absorbent article, the shape of the absorbent article itself corresponds to the shape of the mounting site in advance, and an elastic body is provided to change the shape at the time of mounting. It has been proposed to make it possible to follow changes, and more specifically, in Japanese Utility Model Publication No. 60-19693.
Japanese Patent Laid-Open Publication No. Sho 60/1987 proposes an absorbent article in which a flap portion obtained by laminating a top sheet and a back sheet on both left and right sides is bent on the surface of the absorbent article.
Japanese Patent No. 3491 proposes an absorbent article obtained by folding a flap portion, which is obtained by pasting a top sheet and a back sheet on both left and right sides, to the surface of the absorbent article and then folding the flap toward the outside. .

However, in the absorbent article described above, while the user places the excretion part in the central part of the absorbent body and wears the underwear in close contact with the body, the liquid leakage from the absorbent body is reduced. It has not yet been possible to completely prevent liquid leakage. In particular, during the actual use, the wearing state of the absorbent article is not limited to the above-described wearing state, and the excretory part is worn in a state of being displaced from the central part of the absorber, or the worn absorbent article is worn by the wearer. There is a case that it cannot follow the complicated shape due to the movement of the absorbent article, and there is a gap between the absorbent article and the wearing site. The current situation is that no preventive effect can be obtained. Further, the above-mentioned absorbent article is one in which both front and rear ends of the folded flap portion are adhered to the absorbent article at the front and rear end portions of the absorbent article, and a portion that comes into contact with the excretion part of the user when worn. Was not sufficiently fitted, and side leakage still occurred.

Therefore, it is an object of the present invention to provide an absorbent article which is excellent in fit to a portion which comes into contact with a user's excretory portion when worn and which is less likely to cause side leakage.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a central absorbent body portion having a liquid-permeable topsheet, a liquid-impermeable backsheet, and an absorbent body arranged between the two sheets, and In an absorbent article having flaps provided on both left and right sides of the central absorbent body part, the flaps are continuously provided on the non-skin contact surface side of the absorbent article, and the central absorbent body part is also provided. It is folded toward the top sheet side of
Leak-preventing walls are formed at the left and right edges of the central absorbent body, respectively, and are further folded back toward the outside of the central absorbent body to form a leak-proof surface. The wall is fixed to the central absorbent body part in the front part and the rear part of the part that comes into contact with the excretory part of the user when worn,
The leak-proof surface in the portion contacting the excretion portion is formed in a plane shape substantially parallel to the skin contact surface of the central absorbent body portion, and the non-skin contact at both left and right edge portions of the central absorbent body portion. The above object is achieved by providing an absorbent article characterized in that a wing portion for fixing the absorbent article at the time of use is continuously provided on the contact surface side.

[0007]

In the absorbent article of the present invention, the flap continuously provided on the non-skin contact surface side is bent toward the top sheet side of the central absorbent body portion to form a leak preventive wall. It is folded back to form a leakproof surface. In addition, the leak prevention wall,
It is fixed to the central absorbent body part in the front part and the rear part of the part that comes into contact with the excretory part of the user when worn, so that the leak-proof surface in the part that comes into contact with the excretory part is the central absorbent body. It is formed in a plane shape substantially parallel to the skin contact surface of the portion. Further, a wing portion is continuously provided on the non-skin contact surface side. And, the sanitary napkin which is the absorbent article of the present invention, by having such a structure, a side pocket is formed between the flap and the central absorbent body portion, and body fluid flows from the surface of the top sheet. Also, since the body fluid does not leak through the flap and the leak-proof surface can be provided at a position higher than the skin-contacting surface of the sanitary napkin, even if the absorbent body twists and becomes thicker, the fitting property does not increase. It never drops. Moreover, since the leak-proof surface does not spread along the wearer's skin during wearing and the flap is not folded into the absorber, side pockets are stably formed, and further, the absorber is prevented from twisting. Furthermore, since it is firmly fixed by the above-mentioned wing portion, no deviation occurs.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to the drawings. Here, FIG. 1 shows a first absorbent article of the present invention.
Is a perspective view showing a sanitary napkin as an example of,
FIG. 2 is a schematic view showing a cross section of the sanitary napkin shown in FIG.

The sanitary napkin 1 of the present embodiment shown in FIGS. 1 and 2 has a liquid-permeable top sheet 11, a liquid-impermeable back sheet 12, and an absorbent body 13 disposed between both sheets. And a flap 20 provided on both left and right sides of the central absorbent body portion 10. Such a structure is similar to a normal sanitary napkin.

Further, the sanitary napkin 1 of the present embodiment will be described. The top sheet 11 and the back sheet 12 are formed larger than the absorbent body 13 as a whole so as to each have an extension. The flap is formed by bonding the extension portion of the top sheet and the extension portion of the back sheet together. Moreover, this forms the front edge part 4 and the rear edge part 5. Here, the top sheet 11 and the back sheet 12 are attached by a usual method such as a heat sealing method or an adhesive method.

The sanitary napkin 1 is provided on the non-skin contact surface 3 of the central absorbent body 10 of the sanitary napkin 1.
A slip prevention agent (not shown) is provided for sticking the sanitary napkin 1 to shorts during use.

The material for forming the topsheet 11 and the backsheet 12 is not particularly limited as long as it is generally used as the topsheet and backsheet of absorbent articles such as sanitary napkins. . As the absorbent body 13, a commonly known absorbent body made of pulp, super absorbent polymer or the like can be used without particular limitation.

Thus, the sanitary napkin 1 of this embodiment is
As shown in FIGS. 1 and 2, the flap 20 is continuously provided on the non-skin contact surface 3 side of the sanitary napkin, and further toward the top sheet 11 side of the central absorbent body portion 10. It is bent to form leak-proof walls 21 located on the left and right side edges of the central absorbent body 10, respectively.
The central absorbent body portion 10 is folded back toward the outside to form a leak-proof surface 24, and the leak-proof wall 21 is a front portion and a rear portion of the portion 6 that comes into contact with a user's excretory portion when worn. At the central absorbent body 10 and the leak-proof surface 24 at the portion 6 contacting the excretory portion is formed in a plane shape substantially parallel to the skin contact surface 2 of the central absorbent body 10. The wing portions 30 for fixing the sanitary napkin 1 at the time of use are continuously provided on the non-skin contacting surface 3 side at the left and right side edges of the central absorbent body portion 10.

More specifically, as shown in FIGS. 1 and 2, the top sheet 11 covers the side surface of the absorbent body 13 and its extension is attached to the extension of the back sheet 12. Accordingly, the flap 20 formed by the extension portion of the top sheet 11 and the extension portion of the back sheet 12 is continuously provided on the non-skin contact surface 3 side.

Further, as shown in FIG. 2, the flap 20 is bent at the side edge of the central absorbent body portion 10 to form the leakproof wall 21, and further, the flap 20 of the sanitary napkin 1 is formed. The leak-proof surface 24 is formed by being folded back toward the outside of the central absorbent body 10 slightly above the skin contact surface 2.

Further, the leak preventive wall 21 has a front fixed portion 22 (see FIG. 1) and a rear fixed portion 23 (see FIG. 1) at the front and rear portions of the portion 6 contacting the excretion portion.
Reference] to the top sheet 11 of the central absorbent body 10. Here, the above-mentioned “site that contacts the excretion part” refers to the surface portion of the sanitary napkin that is in contact with the excretion part of the wearer when the sanitary napkin is used, and specifically, the sanitary napkin. It is a portion located between the fixing portion 22 and the fixing portion 23 in the longitudinal direction of the napkin. Further, the "front portion" refers to all of the portion located in front of (the front side of the wearer) the portion 6 that contacts the excretion portion, and includes the front edge portion. Furthermore, the “rear part” refers to all of the parts located rearward (rear side of the wearer) with respect to the site 6 contacting the excretory part, and also includes the rear edge part. Further, the fixing parts 22 and 23 can be easily formed by using an adhesive or the like which is usually used for absorbent articles, or by heat sealing or the like.

By being thus fixed, as shown in FIG. 2, a side wall is provided between the leak-proof wall 21 and the central absorbent body portion 10 in the portion 6 which comes into contact with the excretion portion. The pocket 25 is formed, and the leak-proof surface 24 in the portion 6 that abuts the excretory portion is formed.
However, a little above the skin contact surface 2, it is formed in a plane shape substantially parallel to the skin contact surface 2 of the central absorbent body part 10.

As shown in FIGS. 1 and 2, in the sanitary napkin 1 of this embodiment, the flap 20 is not fixed at the front edge portion 4 and the rear edge portion 5, and the front portion is fixed. Fixed points 2 in front of the portion 22 (the portion of the sanitary napkin located on the front side of the wearer when used) and in the rear portion
In the rear of 3 (the part of the sanitary napkin located on the rear side of the wearer), the folded state is gradually released toward the front or the rear, and the flap 20 has a substantially flat surface. The leak-proof surface 24 has a skin-contacting surface 2
And the side pocket 25 is formed and held stably.

Further, in the sanitary napkin 1 of the present embodiment, the length L of the portion 6 contacting the excretory portion is preferably 3 to 20 cm, more preferably 5 to 15 cm. Further, in the sanitary napkin 1, the length M of the napkin front portion located in front of the fixing portion 22 is
It is preferably 0 to 10 cm, and more preferably 2 to 8 cm.
cm. Furthermore, in the sanitary napkin 1, the length N of the napkin rear portion located rearward of the fixing portion 23 is preferably 3 to 25 cm, and more preferably 5 to 18 cm.

The width S of the leak-proof surface 24 at the portion 6 contacting the excretory portion is preferably 0.5-4 cm.
And more preferably 0.7 to 2.5 cm.
If it is less than 0.5 cm, the leak preventive wall 21 may lie down on the central absorbent body 10 and the side pocket 25 may not be formed. If it exceeds 4 cm, it is difficult to maintain the planar shape of the leak preventive surface 24. Furthermore, since it may induce liquid leakage, it is preferably within the above range. Further, the height of the leak preventive surface 24 (the height from the non-skin contact surface 3) U (see FIG. 2)
Is preferably 40 mm or less, more preferably 5 to 25
mm. Further, the width T between the left and right leak preventive surfaces 24 in the portion 6 contacting the excretion part is 30 mm or more so that the leak preventive surface 24 does not block the skin contact surface 2 of the central absorbent body part 10. Preferably.

The wing portion 30 is formed by adhering a rectangular sheet 31 on the surface of the back sheet 12 and is continuously provided on the left and right side edge portions. The wing portion 30 has an adhesive property. The portion 32 is provided on the non-skin contact surface 3 side. In addition, the surface (non-adhesive surface) of the portion of the sheet 31 that is attached to the central absorbent body portion 10 is subjected to a peeling treatment, so that before use (storage) of the sanitary napkin 1. It is possible to protect the adhesive portion 32 by bending the wing portion 30 toward the non-skin contacting surface 3 and attaching the wing portion 30 to the surface of the sheet 31 in a peelable manner. As the sheet 31, a plastic sheet such as polyethylene or polyethylene terephthalate (PET) used for the back sheet, or a laminated paper or nonwoven fabric is used. The adhesive part 32 is formed by applying an adhesive to the non-skin contact surface 3 side of the wing part 30. As the adhesive, a commonly known adhesive can be used without particular limitation. it can.

Since the sanitary napkin 1 of this embodiment has the above-mentioned structure, the leak-proof surface 24 fits the wearer's skin well, and side leakage can be effectively prevented. It is possible, specifically, the side pocket 25 described above.
By the formation of the excrement, the excrement flowing on the surface of the top sheet 11 once flows into the side pockets 25, and then from the side surface of the central absorbent body portion 10 to the absorbent body 13.
The napkin 1 can be firmly absorbed by the wing portion 30 and can be effectively prevented from lateral leakage.

Further, in the sanitary napkin 1 of this embodiment, elastic members 26 are arranged at the portions of the leak-proof surface 24 that come into contact with the excretion portion. By disposing the elastic member 26, the shape of the leak preventive wall 21 is favorably maintained, and the central absorbent body portion 10 of the leak preventive surface 24 is maintained.
The planar shape substantially parallel to the skin contacting surface 2 is favorably maintained, and the fit to the wearer is further improved. Further, by arranging the elastic member 26 on the leak-proof surface 24 [outward of the folding line 27 (see FIG. 2)], the shape of the side pocket 25 can be increased.
Side leakage can be effectively prevented. The elastic member 26 is not particularly limited as long as it is an elastic member usually used in absorbent articles, but foams of polyolefins and polyurethanes, natural rubber and the like can be particularly preferably used. Further, the shape thereof may be a string shape, a film shape, a plane shape, or the like, and in this embodiment, a string-shaped elastic member is used. Further, the number of the elastic members 26 is not particularly limited, but when the elastic members 26 have a string-like shape, the number of the elastic members 26 is two or more.
It is effective in terms of preventing side leakage. Further, the elastic member 26 is the flap 20 on which the elastic member 26 is arranged.
It is preferable to use one having an elastic force such that the stress at the time of 20% elongation is 100 g or less. Incidentally, the absorbent article of the present invention is not limited to the above-mentioned examples,
For example, it can be applied to disposable diapers and the like.

Next, second to sixth embodiments of the absorbent article of the present invention will be described with reference to FIGS. Here, FIG. 3 is a cross-sectional view [corresponding to FIG. 2] showing a sanitary napkin as a second embodiment of the absorbent article of the present invention.
FIG. 4 is a sectional view [corresponding to FIG. 2] showing a sanitary napkin as a third embodiment of the absorbent article of the present invention.
FIG. 6 is a cross-sectional view [corresponding to FIG. 2] showing a sanitary napkin as a fourth embodiment of the absorbent article of the present invention, and FIG.
FIG. 7 (a) is a cross-sectional view [corresponding to FIG. 2] showing a sanitary napkin as a fifth embodiment of the absorbent article of the present invention.
6 is a sectional view [corresponding to FIG. 2] showing a sanitary napkin as a sixth embodiment of the absorbent article of the present invention.
7B is a cross-sectional view showing a state in which the sanitary napkin shown in FIG. 7A is attached to the shorts. The second embodiment to the sixth embodiment are the same as the first embodiment described above except that they are not particularly described.

In the sanitary napkin 1 of the second embodiment shown in FIG. 3, the flap 20 is formed by a sheet 40 other than the top sheet 11 and the back sheet 12. Further, the wing portion 30 is formed by extending left and right side edge portions of a portion corresponding to the portion 6 of the back sheet 12 that contacts the excretion portion.

As the other sheet 40, a waterproofed sheet, a liquid impermeable sheet or the like can be used. Examples of the waterproofed sheet include a nonwoven fabric treated with a water-repellent oil agent, and the liquid-impermeable sheet includes ethylene, a plastic sheet such as polypropylene, or a laminated sheet of a nonwoven fabric. Etc. can be mentioned.

More specifically, the top sheet 11 mentioned above.
Covers the left and right side surfaces of the absorbent body 13 and covers the left and right side edges of the non-skin contact surface 3 side, and the other sheet 40 is
The edge portion is sandwiched and fixed by the top sheet 11 and the back sheet 12 on the non-skin contact surface 3 side, whereby the flap 20 is continuously provided on the non-skin contact surface 3 side. There is. The flap 20 has a leak preventive wall 21 and a leak preventive surface 24 formed in the same manner as the flap 20 in the first embodiment, and the side edges of the leak preventive surface 24 are non-skin contact surfaces. The elastic member 26 is folded back toward 3, and is arranged so as to be sandwiched between the folded-back portion and the leak-proof surface 24.

In the sanitary napkin 1 of the third embodiment shown in FIG. 4, the flap 20 is formed by the top sheet 11, and the wing portion 30 is in contact with the excretion portion of the back sheet 12. It is formed by extending the left and right side edge portions of the portion corresponding to the contacting portion 6. Specifically, the top sheet 11 is formed by covering both the left and right side surfaces of the absorbent body 13 and further extending the left and right side edges outward, whereby the flap 20 is formed into a non-woven fabric. It is connected to the skin contact surface 3 side. Further, the end portion of the top sheet 11 is sandwiched and fixed by the absorber 13 and the back sheet 12 on the non-skin contact surface 3 side of the absorber 13. Then, the flap 20 is
The leak preventive wall 21 and the leak preventive surface 24 are formed in the same manner as the flap 20 in the first embodiment described above.
4 is folded back toward the non-skin contact surface 3 at the side edge of the elastic member 26, and the elastic member 26 is sandwiched between the folded back portion and the leak-proof surface 24. Further, at this time, the top sheet 11 forming the flap 20 needs to be waterproof, and as the top sheet 11 that can be used in this case, a commonly used top sheet material is used. Only the part that forms the flap in the above is treated to be water repellent, and the part that contacts the absorber has holes, but the part that forms the flap is not opened. Laminate the plastic sheet or the part that forms the flap. Examples of the non-woven fabrics are:

In the sanitary napkin 1 of the fourth embodiment shown in FIG. 5, the flap 20 is formed by the top sheet 11 and the back sheet 12, and the wing portion 30 is formed by the back sheet 12. Has been done. Specifically, the wing portion 30 is formed by outwardly extending the left and right side edge portions of a portion of the back sheet 12 corresponding to the portion contacting the excretion portion, and further, the back portion 12 is formed. The sheet 12 is folded back to the top sheet 11 side and bonded to the top sheet 11, and the flap 20 is formed in the same manner as in the above-mentioned first embodiment. A leak surface 24 is formed. In the above sanitary napkin 1, the entire flap 20 is the backsheet 1.
2 and the top sheet 11. The flap 20 and the wing portion 30 are formed by extending the backsheet 12 over the entire length in the longitudinal direction thereof, folding the backsheet 12 and bonding the backsheet 12 to the topsheet 11 to form the central absorbent body portion 1.
Forming the flaps 20 along all sides of 0, and then folding back the backsheet 12 and cutting the double folded portions in accordance with the desired shape of the wing portions to form the wing portions 30. Created by.

In the sanitary napkin 1 of the fifth embodiment shown in FIG. 6, the wing portion 30 is formed by laying two sheets 31, 31 'on both left and right sides of the non-skin contact surface 3. Has been done. The other points are the same as those in the first embodiment.

In the sanitary napkin 1 of the fifth embodiment shown in FIG. 7 (a), the wing portion 30 has the non-skin contact surface 3
A little above, it is fixed to the flap 20 via an adhesive portion 33 formed by applying an adhesive along the longitudinal direction of the central absorbent body 10. The other points are the same as those in the first embodiment. Here, the term “slightly above” means above the non-skin contact surface 3 and below the leak preventive surface 24, and when the side pockets 25 are formed by being attached to the shorts during use, the leak preventive surface 24 is formed. Is preferably a position that is not below the skin contact surface 2.

By the above-mentioned structure, when the sanitary napkin 1 is used, as shown in FIG.
As shown in (b), when the sanitary napkin 1 is attached to the shorts 50, a larger side pocket 25 is formed, so that side leakage can be prevented more effectively.

The absorptive article of the present invention is not limited to the above-mentioned embodiment, and for example, in the first embodiment shown in FIGS. 1 and 2, the following constitution can be adopted. . That is, in the sanitary napkin 1 of the present invention,
As shown in FIG. 8, at the front edge portion 4, the folded flap 20 may be heat-sealed and fixed with the leak-proof surface facing upward in the folded state. As a result, the shape of the flap 20 in the portion 6 contacting the excretion portion can be maintained in a good condition, and further, the side portions are formed over the entire area where the central suction body portion 10 and the flap 20 contact each other. The pocket 25 can be formed. In this case, the fixed point 22 on the front portion may not be fixed.

In the sanitary napkin 1 of the present invention, the flaps 20 folded back at the front edge portion 4 and the rear edge portion 5 are heat-sealed with the leak-proof surface facing upward in the folded back state. Then, it may be fixed. As a result, the shape of the flap 20 in the portion 6 contacting the excretion portion can be maintained in a good condition, and further, the side portions are formed over the entire area where the central suction body portion 10 and the flap 20 contact each other. Pockets can be formed. Further, in the front edge portion 4 and the rear edge portion 5, when the flap 20 folded back is heat-sealed with the leak-proof surface facing upward in the folded back state, and fixed, the above-mentioned front portion and The fixed points 22 and 23 on the rear portion may not be fixed.

Furthermore, in the first embodiment, an example in which the leak preventive wall 21 is fixed to the top sheet 11 on the surface (skin contacting surface) of the central absorbent body 10 has been described, but the present invention is not limited to this. For example, the central absorbent body portion 10 is not limited to the above.
The leak preventive wall 21 may be fixed to the top sheet 11 laterally.

Further, in the first embodiment shown in FIGS. 1 and 2, the fixing of the leak preventive wall to the central absorbent body portion was described as an example in which it is fixed in a dot shape. It can also be fixed in a line shape along the longitudinal direction). At this time, the linear fixing can be fixed by an adhesive or heat seal in the same manner as the fixing point, and the length of the fixing portion formed by fixing the linear shape is arbitrary, At least one of the fixed portions formed on the front portion and the rear portion of the portion that contacts the excretion portion may extend to the front edge portion or the rear edge portion.

Further, in the first embodiment shown in FIGS. 1 and 2, the flap 20 can be formed only by the back sheet 12. Further, the first shown in FIG. 1 and FIG.
In the embodiment described above, the wing portion 30 has been described as an example provided in a portion corresponding to the portion 6 that contacts the excretion portion, but the place where the wing portion 30 is provided is not limited to this. It can also be provided so as to be shifted forward or rearward from the portion 6 contacting the excretion portion. Further, in the absorbent article of the present invention, the wing portion 30 is formed integrally with the back sheet 12 in the material forming the wing portion 30 as in the second to fourth embodiments shown in FIGS. Except in the case where the wing portion 30 is not provided, the wing portion 30 can be formed by using a liquid permeable material such as ordinary non-woven fabric or paper in this case. Further, in the sanitary napkin in which the wing portion 30 is formed by the backsheet 12 shown in FIGS. 3 and 4, the portion located in front of the central absorbent body portion of the backsheet,
It is also possible to use a backsheet formed by arranging backsheet members forming a portion located at a portion forming the wing portion and a portion located at the rear of the central absorbent body portion at predetermined positions.

[0038]

EFFECTS OF THE INVENTION The absorbent article of the present invention is excellent in fitability to the part that comes into contact with the excretory part of the user when worn, and is less likely to cause side leakage. Is played. Side pockets are formed between the flap and the central absorbent body portion, and even if body fluid flows from the surface of the top sheet, the body fluid does not leak through the flap. Since the leak-proof surface can be provided at a position higher than the skin-contacting surface of the sanitary napkin, the fitting property does not deteriorate even if the absorbent body twists and becomes thicker. The leak-proof surface spreads along the skin at the time of wearing, the flap is not folded into the absorbent body, and the side pocket can be stably formed. Since the leakproof surface spreads along the skin, the absorber is prevented from twisting. Liquid leakage is suppressed by the leak preventive wall and the leak preventive surface. The leak-proof surface can promote the spread of the flap on the skin, improve the fit to the skin, and reduce the discomfort. If the flaps are not fixed at the front and rear edges but are opened outward at the front and rear edges to form a substantially flat surface shape, the open flap prevents It is possible to stably form and hold the side pocket formed by the shape of the leak surface that is substantially parallel to the skin contact surface and the leak preventive wall. Since it has the wing portion, it can be firmly fixed to shorts or the like during use, and the absorbent article is less likely to be displaced during use.

[Brief description of drawings]

FIG. 1 is a perspective view showing a sanitary napkin as a first embodiment of an absorbent article of the present invention.

FIG. 2 is a schematic view showing an AA cross section of the sanitary napkin shown in FIG.

FIG. 3 is a cross-sectional view [corresponding to FIG. 2] showing a sanitary napkin as a second embodiment of the absorbent article of the present invention.

FIG. 4 is a cross-sectional view [corresponding to FIG. 2] showing a sanitary napkin as a third embodiment of the absorbent article of the present invention.

FIG. 5 is a sectional view [corresponding to FIG. 2] showing a sanitary napkin as a fourth embodiment of the absorbent article of the present invention.

FIG. 6 is a cross-sectional view [corresponding to FIG. 2] showing a sanitary napkin as a fifth embodiment of the absorbent article of the present invention.

FIG. 7 (a) is a cross-sectional view [corresponding to FIG. 2] showing a sanitary napkin as a sixth embodiment of the absorbent article of the present invention, and FIG. It is sectional drawing which shows the state which attached the sanitary napkin shown to (a) to the shorts.

FIG. 8 is a perspective view (corresponding to FIG. 1) showing a sanitary napkin as another embodiment of the absorbent article of the present invention.

[Explanation of symbols]

 1 Sanitary Napkin 2 Skin Contact Surface 3 Non-Skin Contact Surface 10 Central Absorber Part 11 Topsheet 12 Backsheet 13 Absorber 20 Flap 21 Leak-proof Wall 22 Fixed Part 23 Fixed Part 24 Leak-proof Surface 25 Side Pocket 26 Elastic Member 30 Wing 40 Other sheet

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Minoru Nakanishi Minoru 3-chome, Minamikochi Town, Kawachi District, Tochigi Prefecture 23-11

Claims (4)

[Claims] 1. A central absorbent body portion comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body arranged between the sheets, and both left and right sides of the central absorbent body portion. In an absorbent article having a flap provided in a portion, the flap is continuously provided on the non-skin contact surface side of the absorbent article, and is folded toward the top sheet side of the central absorbent body portion. Is formed, the leakage preventing wall located on the left and right side edges of the central absorbent body portion, respectively, further, it is folded back toward the outside of the central absorbent body portion to form a leakage preventing surface, The leak-proof wall is fixed to the central absorbent body portion in the front part and the rear part of the part that comes into contact with the excretion part of the user when worn, and the leak-proof surface in the part that comes into contact with the excretion part is the above-mentioned. Formed in a plane substantially parallel to the skin contact surface of the central absorber Are, the absorbent article, wherein the non-skin contact surface side of the left and right side edges of the central absorbent body portion, the wing portion for fixing the absorbent article during use is provided continuously, the. 2. The absorbent article according to claim 1, wherein an elastic member is provided on the leakproof surface. 3. The absorbent article according to claim 1, wherein the wing portion is formed by extending left and right side edge portions of a portion of the back sheet corresponding to a portion in contact with the excretion portion. Sex goods. 4. The absorbent article according to claim 1, wherein the wing portion is adhesively fixed to the flap slightly above the non-skin contact surface.