JPH10155832A - Absorbent articles - Google Patents

Abstract

(57) [Summary] [Problem] To provide an absorbent article that can surely prevent leakage. SOLUTION: A pair of front grooves 16, 16 formed along the longitudinal direction are provided on a skin contact surface P of an excretory part abutment part 10a which abuts on a body fluid excretion part of a wearer when worn. A rear groove 15 formed along the width direction on the skin contact surface P of the rear portion 10b which comes into contact with the rear side of the wearer at the time of wearing, and a rearmost portion of the rear groove 15 the distance L between the rear end of 15a the absorption unit a is a 10 to 50 mm, the distance W ₁ of the innermost portion each other in the width direction of the sanitary napkin 10 of the pair of front grooves 16 and 16, the rear groove 15 The sanitary napkin 10 is shorter than the distance W ₂ between the outermost portions in the width direction of the sanitary napkin 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an absorbent article such as a sanitary napkin or an incontinence pad, and more particularly to an absorbent article having excellent leakproofness.

[0002]

2. Description of the Related Art Conventionally, a liquid-permeable skin contacting surface such as a sanitary napkin, an incontinence pad, a panty liner, a paper diaper and the like, and a liquid-impermeable non-skin contact. There have been proposed various absorbent articles which are provided with a contact surface, an absorbent portion interposed between the skin contact surface and the non-skin contact surface, and are formed substantially vertically long. Absorbent articles used at bedtime or for the purpose of absorbing a large amount of bodily fluids may be transmitted or absorbed by the user's body due to the influence of the user's body position such as sideways or on his back or a large amount of bodily fluids. It may leak by flowing on the surface of the article, or may ooze out from the end along the inside of the absorber. In such an absorbent article, leakage often occurs particularly in the rear portion and in the lateral direction.

For this reason, conventionally, Japanese Utility Model Application Laid-Open No. 56-590
No. 13 and Japanese Utility Model Laid-Open No. 2-88625,
As described in JP-A-1111002 and JP-A-64-49555, a technique has been proposed to prevent leakage by providing a groove in an absorbent article to block body fluids and control the diffusivity. I have. However, in these prior arts, there were cases where it was still not possible to sufficiently prevent leakage, particularly leakage at the rear part.

Accordingly, an object of the present invention is to provide an absorbent article which can reliably prevent side leakage and back leakage.

[0005]

Means for Solving the Problems As a result of various studies conducted by the present inventors to solve the above problems, an absorbent article having grooves of a specific shape arranged at specific positions has achieved the above object. I learned that

[0006] The present invention has been made based on the above findings, and includes a liquid-permeable skin-contacting surface, a liquid-impermeable non-skin-contacting surface, a skin-contacting surface and a non-skin-contacting surface. An absorbent part interposed between the excretion part contact part and the skin contact surface of the excretion part contact part which comes into contact with the wearer's bodily fluid excretion part when the absorbent article is worn. Having a pair of front grooves formed along the longitudinal direction of the absorbent article, the skin-contacting surface of the rear portion which is in contact with the rear side of the wearer at the time of wearing, the absorbent article A rear groove formed along the width direction of the rear groove, a distance between a rearmost portion of the rear groove and a rear end of the absorbing portion is 10 to 50 mm, and the absorbability of the pair of front grooves is The distance between the innermost parts in the width direction of the article is greater than the distance between the outermost parts in the width direction of the absorbent article in the rear groove. Shorter is to provide an absorbent article characterized by.

The above-mentioned “a pair of front grooves formed along the longitudinal direction of the absorbent article” may be formed substantially parallel to the longitudinal direction of the absorbent article. In addition to the case where the front grooves are formed in parallel with the longitudinal direction, each front groove also includes a combination from one end to the other end side, and when formed in one straight line, a plurality of pairs such as a pair And the case where it is formed in a curved shape such as a single arc or a plurality of arcs such as a pair. The above-mentioned "rear groove formed along the width direction of the absorbent article"
What is necessary is just to be formed substantially parallel to the width direction of the absorbent article,
In addition to the case where the rear groove is formed in parallel with the width direction, the case where the rear groove is formed so as to be located outward in the width direction as it goes rearward is also included, and it is formed in a single linear shape. In some cases, the shape may be a linear shape such as a pair or a plurality of straight lines, or a curved shape such as a single or a pair of a plurality of arcs.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the first absorbent article of the present invention will be described.
The embodiment will be specifically described with reference to the drawings. FIG. 1 is a plan view showing a sanitary napkin as a first embodiment of the absorbent article of the present invention, FIG. 2 is a plan view of a main part of the sanitary napkin of FIG. 1, and FIG. I-
It is I sectional drawing.

As shown in FIG. 1, the absorbent article (sanitary napkin) 10 of the present embodiment has a liquid-permeable skin contact surface P.
, A liquid-impermeable non-skin contact surface, and an absorption portion A interposed between the skin contact surface P and the non-skin contact surface, and are formed substantially vertically.

More specifically, the skin contact surface P is formed by a liquid-permeable top sheet 12, and the non-skin contact surface is formed by a liquid-impermeable back sheet. Further, the top sheet 12 and the back sheet,
The sanitary napkin 10 is bonded at both ends in the longitudinal direction.

The left and right side edges of the top sheet 12 and the back sheet extend outward in the width direction, and wings 14 are formed. This wing 14,14
An adhesive is applied to the surface of the back sheet to form slip stoppers 14a, 14a.
4a and 14a are protected by a release paper or a release film (not shown).

These structures are the same as those of a conventional absorbent article. As a material for forming the top sheet 12 and the back sheet, and a pressure-sensitive adhesive for forming the slip preventing portions 14a, 14a, generally known materials are used. Can be used without particular limitation.

Thus, the sanitary napkin 10 of the present embodiment is
As shown in FIG. 1, along the longitudinal direction of the sanitary napkin 10, on the skin contact surface P of the excretory part abutment part 10 a which abuts on the excretory part from which the body fluid of the wearer is excreted when worn. It has a pair of formed front grooves 16, 16, and extends along the width direction of the sanitary napkin 10 on the skin contact surface P of the rear portion 10 b which comes into contact with the rear side of the wearer at the time of wearing. It has a rear groove 15 formed by the following method. The distance L between the rearmost portion 15a of the rear groove 15 and the rear end of the absorbing portion A is 10 to 5
0 mm, and the distance W between the innermost portions of the pair of front grooves 16 in the width direction of the sanitary napkin 10.
₁ is shorter than the distance W ₂ between the outermost portions of the rear groove 15 in the width direction of the sanitary napkin 10. The distance L needs to be 10 to 50 mm, preferably 10 to 30 mm. If it is less than 10 mm, the absorbable amount of the bodily fluid on the rear side of the groove is too small, and the bodily fluid that once flows backward from the rear groove 15 and leaks may leak from the absorbent article 1 without being absorbed by the absorbing portion A. There is
If it is 50 mm or more, the distance between the rear groove 15 and the excretion position may be too short, the amount of bodily fluid reaching the rear groove 15 increases, and the bodily fluid easily passes over the rear groove 15 and flows backward and leaks. There is a risk.

More specifically, in the sanitary napkin 10 of the present embodiment, the rear groove 15 is provided with the absorbing portion A.
The sanitary napkin 10 is formed in an arc shape along the rear end of the sanitary napkin 10.
Rear portion 15b formed in the width direction of
And a pair of side portions 15c, 15c linearly extending forward along both longitudinal edges of the sanitary napkin 10.

The rear groove 15 has a depth D of 1-10.
mm, more preferably 3 to 8 mm. If the depth D of the rear groove 15 and the front groove 16 is less than 1 mm, it is difficult to obtain the effect of blocking the body fluid flowing on the surface, and if it exceeds 10 mm, the wearer will feel uncomfortable and unfavorable. The ratio T ₁ of the thickness T ₁ of the sanitary napkin 10 at the portion where the rear groove 15 is formed to the thickness T _{2 at the} portion where the groove is not formed.
/ T ₂ is preferably 0.05 to 0.7, and 0.1 to 0.1.
5 is more preferred. When T ₁ / T ₂ is less than 0.05, a sanitary napkin having a preferable thickness T ₂ as the sanitary napkin 10 (the thickness T ₂ of the sanitary napkin 10 is 1.5 to
15 mm is preferable, and 2 to 10 mm is more preferable. )
In the case where the rear groove 15 and the front groove 16 are formed by pressing, the rear groove 15 and the front groove 16 become too hard and may lose the fit, and if it exceeds 0.7, the body fluid in the absorbing portion A This is not preferable because a sufficient effect of blocking the flow of air cannot be obtained.

Hereinafter, a preferred groove structure will be described.
As shown in FIGS. 2 and 3, the rear groove 15 is subjected to groove processing for discontinuously forming a plurality of diamond-shaped small grooves 15 d from the skin contact surface P side along a predetermined shape. 2 between grooves 15d continuously depressed from skin contact surface P
It is formed to a step depth. Thus, the small groove 15d
And between the small grooves 15d continuously depressed from the skin contact surface P 2
By forming at the step depth, the depth D of the rear groove 15
, While maintaining the flexibility of the groove portion high, and obtaining a good fit. It is preferable that the size of the small groove 15d is 1 to 100 mm ² . 1mm
^{If it is} smaller than ^{2, the} effect of blocking body fluid is small, and 100
If it exceeds mm ² , favorable flexibility cannot be obtained. Further, the pitch of each small groove 15d is preferably 0.5 to 5 mm. If it is less than 0.5 mm, favorable flexibility and skin contact properties cannot be obtained.
A part that does not depress is generated between d and the leakage prevention effect is reduced. Further, in the groove processing for forming the small grooves 15d discontinuously, the thickness T ₃ of the sanitary napkin 10 between the small grooves 15d and the thickness T _{2 of the} portion where no grooves are formed is provided.
The ratio T ₃ / T ₂ is preferably 0.2 to 0.8, and more preferably 0.3 to 0.6 from the viewpoint of the effect of blocking body fluids and the feeling of wearing.
Is more preferred. Furthermore, the small groove 1 of the sanitary napkin 10
A small groove 1 having a thickness T _{1 in} a portion where 5d is formed
The ratio T ₁ / T ₃ to the thickness T ₃ between the 5d is preferably 0.1 to 0.8 from the damming effect and fit the body fluid, 0.3 to 0.7 is more preferable. The above groove processing,
The embossing roll having a diamond-shaped embossed projection and having a predetermined temperature is pressed against a generally known groove-free sanitary napkin from the skin contact surface side to heat and compress the sanitary napkin in the thickness direction.

The pair of front grooves 16, 16 are formed symmetrically in a convex arc toward the inside in the longitudinal direction of the sanitary napkin 10 in plan view. These front grooves 16,1
Distance W ₁ of the innermost portion each other in the width direction of the sanitary napkin 10 of 6, has a 20 to 50 mm, than the distance W ₂ between the outermost portion in the width direction of the sanitary napkin 10 of the rear groove 15 It is getting shorter. This pair of front grooves 1
The grooves 6 and 16 are formed by the same groove processing as the rear groove 15. The front grooves 16, 16 are provided one by one at the front ends of the two side portions 15c, 15c of the rear groove 15, and the front grooves 16, 16 and the rear groove 15 are formed as one groove. Is formed. A preferred depth D of the front grooves 16, 16; a ratio of a thickness of the sanitary napkin in a portion where the front grooves 16, 16 are formed to a thickness of the sanitary napkin in a portion where no groove is formed;
The preferred groove processing method is the same as that for the rear groove 15 described above.

The absorbing portion A can be made of pulp, paper, nonwoven fabric or superabsorbent polymer which has been conventionally used for forming the absorbing portion of an absorbent article. What is contained is preferable in that the rear groove 15 and the front grooves 16, 16 are formed and held in a more stable state.

It is preferable that the thermoplastic fibers are bonded to each other in the absorbent sheet 13 so that the thermoplastic fibers keep the shape of the absorbent sheet 13 stable when absorbing body fluid, and the sanitary napkin 10 is preferably used. This is preferable because the mounting form is maintained, the state is restored when the pressure is released, and the sanitary napkin 1 is stably maintained without twisting. The thermoplastic fiber is not particularly limited as long as the fibers adhere to each other by heating, and specific examples thereof include polyethylene, polypropylene, polyester fiber, polyethylene-polyester composite fiber, and polypropylene-polyester composite fiber. Is preferably used. Further, polyvinyl alcohol fibers or the like in which the fibers are bonded to each other by dissolving in hot water and drying can also be preferably used.

The absorbent sheet 13 may be formed of only the thermoplastic fibers, but may be a mixture of hydrophilic fibers such as flap pulp and rayon, and a known super-absorbent polymer. The mixing amount of the thermoplastic fibers when these are mixed and used is preferably 1 to 30% by weight based on the entire absorbent sheet 13.

The sanitary napkin 10 of this embodiment is mounted and used in the same manner as a conventional normal sanitary napkin with the excretory part abutment portion 10a disposed in the crotch. In the mounted state, a force in the width direction is applied to the excretion part abutment part 10a of the sanitary napkin 10 from the side, and the excretion part abutment part 10a
The front grooves 16 are bent at 6 and 16 so that the front grooves 16 and 16 have an arch-shaped cross section protruding toward the skin contact surface P, and are brought into contact with the wearer's crotch while being fitted well. Then, the bodily fluid from the wearer is excreted in the central part of the excretion part abutment part 10a.

The excreted body fluid is transferred from the central portion of the excretion part abutment part 10a onto the skin abutment surface P while absorbing the absorbent sheet 13a.
It is absorbed inside and diffused outward. Then, the bodily fluid that has moved on the skin contact surface P and has reached the front groove 16 is once in the front groove 1.
6 and 16 and the front sheet 1 from the front grooves 16 and 16
2 and is absorbed and held by the absorption sheet 13. The body fluid not absorbed by the absorbent sheet 13 is
The sanitary napkin 1 is restrained from spreading in the width direction by 6.
It shifts and spreads in the longitudinal direction of 0, and shifts particularly backward when supine. In addition, the central part of the excretion part abutment part 10a is shifted on the skin abutment surface P directly or directly into the front grooves 16,16.
The bodily fluid that has reached the rear groove 15 along the path temporarily stays in the rear groove 15, is absorbed from the rear groove 15 through the topsheet 12, and is retained by the absorbent sheet 13. And, when the body fluid reaching the rear groove 15 is large or when the wearer's movement is severe,
In the case where the body fluid moves on the topsheet at a high speed, for example, a part of the body fluid overflows from the rear groove 15 and is absorbed and held by the absorbent sheet 13 through the topsheet 12 further behind the sanitary napkin 10. You. When the bodily fluids that move through the absorbing section A reach the front grooves 16, 16 and the rear groove 15,
The front grooves 16, 16 and the rear groove 15 prevent the outward movement from the front grooves 16, 16 and the rear groove 15, and are absorbed by the absorbent sheet 13 around the front grooves 16, 16 and the rear groove 15. Will be retained.

As described above, the sanitary napkin 1 of the present embodiment is
According to No. 0, since a pair of front grooves 16, 16 are formed in the skin contact surface P of the excretory part contact portion 10a in the longitudinal direction of the sanitary napkin 10, the absorption groove A is formed on the skin contact surface P. The movement of the body fluid in the width direction is prevented by the front grooves 16, 16 and lateral leakage is prevented. In addition, the movement of the body fluid to the rear portion 10b is favorably promoted in the supine position, and the lateral leakage of the body fluid is favorably prevented even in the supine position. According to the sanitary napkin 10 of the present embodiment, a pair of front grooves 16, 16 is formed on the skin contact surface P of the excretory portion contact portion 10a.
Is formed along the longitudinal direction of the body, so that the excretion part abutment part 10a has an arch-shaped cross section at the time of wearing and fits well to the wearer, so that the excreted body fluid can be surely discharged.
, The amount of bodily fluids reaching the front grooves 16, 16 and the rear groove 15 can be reduced. According to the sanitary napkin 10 of the present embodiment, the distance W between the innermost portions of the pair of front grooves 16 in the width direction of the sanitary napkin 10.
₁ is shorter than the distance W ₂ between the outermost portions of the rear grooves 15 in the width direction of the sanitary napkin 10, so that the body fluids that have been prevented from moving in the width direction in the front grooves 16, 16 are surely rearward. It is guided to the groove 15 and the rear groove 15 can reliably prevent the rear leakage.

Further, according to the sanitary napkin 10 of the present embodiment, the front grooves 16, 16 are formed symmetrically in a convex arc shape inward in the longitudinal direction of the sanitary napkin 10 in plan view. and the distance W ₁ of the innermost portion to each other is in the 20~50mm in the width direction of the sanitary napkin 10 of the front grooves 16, 16, excretory abutment 10a when wearing especially well wearer The excreted body fluid is more reliably absorbed from the excretion part abutment portion 10a, and the amount of the body fluid reaching the front grooves 16, 16 and the rear groove 15 is further reduced. Furthermore, according to the sanitary napkin 10 of the present embodiment, the distance W ₁ of the innermost portion each other in the width direction of the front groove 16, 16 has a 20 to 50 mm, the width direction outer side of the front groove 16, 16 Since the absorbing portion A is disposed on the front side, the body fluid overflowing from the front grooves 16, 16 is absorbed by the absorbing portion A before reaching the both side edges along the longitudinal direction of the sanitary napkin 10, and lateral leakage is avoided. .

According to the sanitary napkin 10 of the present embodiment, since the rear portion 15b of the rear groove 15 is formed in the rear portion 10b in the width direction of the sanitary napkin 10, the rear portion 15b can be formed on the skin contact surface P and can be absorbed. The transition of the body fluid in the portion A in the longitudinal direction is prevented by the rear portion 15b of the rear groove 15, and the rear leakage is prevented. According to the sanitary napkin 10 of the present embodiment, since the distance L between the rearmost portion 15a of the rear groove 15 and the rear end of the absorbent portion A is 10 to 50 mm, the rear groove 15
The body fluid overflowing from the napkin 10 is absorbed by the absorbing portion A before reaching the rear end of the sanitary napkin 10, so that the back leakage is avoided.

According to the sanitary napkin 10 of the present embodiment, the side portions 15c, 15c of the rear groove 15 prevent lateral leakage also in the rear portion 10b. According to the sanitary napkin 10 of the present embodiment, the rear groove 15 has the side portions 15c, 1 along both side edges in the longitudinal direction of the sanitary napkin 10.
5c, the rear portion 10b also fits well to the wearer when worn, preventing the excreted bodily fluid from passing along the wearer's skin and migrating.
The amount of bodily fluid reaching b can be reduced. According to the sanitary napkin 10 of the present embodiment, the rear groove 15 is
Since it is connected to the body 16, leakage of bodily fluids is completely avoided in a wide range. Further, according to the sanitary napkin 10 of the present embodiment, the rear groove 15 and the front groove 16,
16 is formed by connecting a plurality of small grooves in a discontinuous manner, so that good flexibility is ensured in the longitudinal direction and the width direction of the rear portion, and rear leakage and side leakage are achieved by better fitting properties. Is avoided. According to the sanitary napkin 10 of the present embodiment, the rear groove 15 and the front groove 16,
Since all the grooves 16 are formed by performing the same groove processing from the skin contact surface P side, it is possible to form all the grooves in one process.

Next, a second embodiment of the absorbent article of the present invention will be specifically described with reference to the drawings. still,
In this embodiment, the same members as those of the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and the description thereof will be omitted. FIG. 4 is a perspective view showing a sanitary napkin as a second embodiment of the absorbent article according to the present invention.

In the sanitary napkin 20 of this embodiment, as shown in FIG. 4, a pair of rear grooves 25, 25 are formed on the left and right except for the center in the width direction of the sanitary napkin 20. Each of these rear grooves 25, 25 is
16 are provided one by one. These rear grooves 25,
Rearmost portion 25a, the distance W ₃ of to what 25a of 25, in order to better prevent leakage to the rear, is preferably within 3 cm, more preferably within 1 cm. This is the same as the above-described first embodiment except that the rear groove 25 is not disposed at the center in the width direction but is two. Also in this embodiment,
Functions and effects similar to those of the above-described first embodiment can be obtained. In particular, according to the present embodiment, the rear groove 25 is formed in a pair with the rearmost portions 25a, 25a being spaced apart from each other. It is possible to obtain an effect of fitting and exhibiting excellent leakage prevention and skin contact.

Next, a third embodiment of the absorbent article according to the present invention will be specifically described with reference to the drawings. still,
In this embodiment, the same members as those of the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted. FIG. 5 is a perspective view showing a sanitary napkin as a third embodiment of the absorbent article according to the present invention.

In the sanitary napkin 30 of this embodiment, as shown in FIG. 5, the sanitary napkin 30 is shrunk along a predetermined length in the longitudinal direction at both side edges along the longitudinal direction of the sanitary napkin 30. The elastic member 37 which makes the shape of the sanitary napkin 30 a curved shape in which the skin contact surface P side is concave.
37.

More specifically, the elastic members 37, 37 are fixed between the absorbing section A and the topsheet 12 in an extended state, and the elastic members 37, 37 contract to contract the sanitary napkin. The shape of 30 is a curved shape in which the skin contact surface P side is concave. The elastic members 37, 3
As 7, a film, fiber, foam, or the like made of a rubber-based polymer such as polyurethane, polybutadiene, or isoprene, ethylene-vinyl acetate, or an elastic polyolefin-based polymer can be used. The elastic members 37, 37
In order to form the sanitary napkin 30 into a shape that fits the wearer well without deteriorating the feeling of wearing, it is preferable that the stress when the elongation rate is 30% is 10 to 300 gf. The extension ratio is a ratio of the length of the portion that has been extended and increased to the natural length.
When the thing of 00 cm is stretched to 200 cm, the stretching rate is 100%. It is the same as the above-described first embodiment except that it has elastic members 37 and 37.

In this embodiment, the same operation and effect as those in the first embodiment can be obtained. In particular, according to the sanitary napkin 30 of the present embodiment, the sanitary napkin 30 fits the wearer even in its longitudinal direction, so that the body fluid is prevented from being transmitted through the wearer's skin, so that the front groove 16 can be more preferably. , 16 and the rear groove 15 are exerted to further prevent lateral leakage and rear leakage of body fluid.

Next, a fourth embodiment of the absorbent article according to the present invention will be specifically described with reference to the drawings. still,
In this embodiment, the same members as those of the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and the description thereof will be omitted. FIG. 6 is a perspective view showing a sanitary napkin as a fourth embodiment of the absorbent article according to the present invention.

In the sanitary napkin 40 of the present embodiment, as shown in FIG. 6, a leak-proof wall 48a is formed at a side edge along the longitudinal direction of the sanitary napkin 40. To describe this embodiment in detail, in this embodiment, the sanitary napkin 40 has a flap 48. The flap 48 has a leakage-preventing wall 48a that is disposed along a side edge along the longitudinal direction of the sanitary napkin 40 and faces the topsheet 12, and is formed by the topsheet 12 and the leakage-prevention surface 48b. A pocket S is formed. Further, the flap 48 has a leak-proof surface 48b arranged in parallel with the skin contact surface P on the top sheet 12 side. The leak-proof surface 48b is provided with a leak-proof surface holding elastic member 49, so that the leak-proof surface 48b is securely held parallel to the skin contact surface P. For more detailed examples of the flap 48, see the absorbent articles described in JP-A-8-182702, the absorbent articles described in JP-A-8-224271, and the absorbent articles described in JP-A-8-224271. Reference can be made to absorbent articles. In this embodiment, a flap 48 is provided, and a leak-proof wall 48a and a leak-proof surface 48b are provided.
Is formed, and the leakproof surface holding elastic member 49 is provided on the leakproof surface 48b.
This is the same as the embodiment.

In this embodiment, the same operation and effect as those in the first embodiment can be obtained. In particular, according to this embodiment, the leak-proof wall 4 formed by the flap
8a further reliably avoids lateral leakage. Further, since the side pocket S is formed by turning back from the leak-preventing wall 48a, the side pocket S also prevents the side leakage. Further, since the leak-proof surface 48a is held in a state of spreading along the wearer's skin, the shape of the side pocket S is stably held, and the deformation of the absorbing portion A is suppressed.

Next, a fifth embodiment of the absorbent article of the present invention will be specifically described with reference to the drawings. still,
In this embodiment, the same members as those of the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and the description thereof will be omitted. FIG. 7 is a plan view showing a male incontinence pad as a fourth embodiment of the absorbent article according to the present invention.

As shown in FIG. 7, the male incontinence pad 50 of this embodiment has a topsheet 52 forming a skin contact surface P.
And the back sheet forming the non-skin contact surface, and the absorbent portion A 'interposed between the skin contact surface P and the non-skin contact surface are all cross-sections in which the central portion C in the longitudinal direction is constricted. It has an hourglass shape, and the excretion part abutment part 50a is located forward of the central part C.

The male incontinence pad 50 of the present embodiment is worn with the central portion C abutting on the crotch and the front groove 16 arranged in front of the wearer. In the mounted state, a force in the width direction is applied to the excretory portion abutment portion 50a from the side, and the excretion portion abutment portion 50a is bent in the front grooves 16, 16 and the gap between the front grooves 16, 16 is non-skin. It has an arch-shaped cross section protruding to the contact surface P side, and is brought into contact with the wearer in a state of being fitted well. Then, similarly to the first embodiment, the rear leakage and the lateral leakage are avoided. As described above, even in the absorbent article in which the excretory part abutment part is not arranged in the crotch part as in the first to fourth embodiments, a good fit is obtained in the front groove and the rear groove, and the rear leakage is achieved. , Side leakage can be avoided.

The absorbent article of the present invention is not limited to the above-described embodiment, and can be variously modified without departing from the gist of the present invention. For example, the rear groove in the absorbent article of the present invention is not limited to one continuous groove from the front end to the rear end as in each of the above embodiments, as shown in FIG.
The rear groove 65 may be discontinuously formed at several places. In addition, as shown in FIG.
The vertices may be of a substantially rectangular shape arranged at the center in the width direction. By arranging a plurality of the rear grooves 75 in series in the longitudinal direction of the sanitary napkin 70, the side portions 15c, 25c of the rear groove 15 of the first embodiment and the rear groove 25 of the second embodiment can be used. By the same operation, lateral leakage at the rear portion 10b can be avoided. Further, the rear groove may not be one in which the small grooves are connected as described above, and may be a rear groove having a uniform depth continuously grooved. Further, when formed by a plurality of discontinuous small grooves divided in the longitudinal direction as in the above-described embodiment, the shape of the small grooves is not particularly limited. As shown in FIG. 10, the front grooves 16, 16 and the rear groove 15 may not be continuous, or, as shown in FIG. 11, a front groove 99 connecting the front ends of the front grooves may be provided.

The absorbing section may be constituted only by the absorbing sheet as in the above-described embodiment. However, the absorbing section may be formed by using another absorbing sheet, a high-absorbent polymer, another absorbing member, or a thicker absorbent. It can also be configured. In addition, absorption part A
Is preferably 1.5 to 15 mm. As shown in FIGS. 8 to 10, the absorbent article may be a wingless sanitary napkin 60, 70, 80, as well as an incontinence pad 50, a panty liner, a paper diaper or the like as shown in FIG. it can.

[0041]

As described above, the absorbent article of the present invention can prevent the lateral leakage and the back leakage satisfactorily.

[Brief description of the drawings]

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

FIG. 2 is a main part plan view showing the sanitary napkin of FIG.

FIG. 3 is a sectional view taken along line II of FIG. 2;

FIG. 4 is a plan view showing a sanitary napkin as a second embodiment of the absorbent article according to the present invention.

FIG. 5 is a perspective view showing a sanitary napkin as a third embodiment of the absorbent article according to the present invention.

FIG. 6 is a sectional perspective view showing a sanitary napkin as a fourth embodiment of the absorbent article according to the present invention.

FIG. 7 is a plan view showing a male incontinence pad as a fifth embodiment of the absorbent article according to the present invention.

FIG. 8 is a plan view showing a sanitary napkin as another embodiment of the absorbent article according to the present invention.

FIG. 9 is a plan view showing a sanitary napkin as another embodiment of the absorbent article according to the present invention.

FIG. 10 is a plan view showing a sanitary napkin as another embodiment of the absorbent article according to the present invention.

FIG. 11 is a plan view showing a sanitary napkin as another embodiment of the absorbent article according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Sanitary napkin (absorbent article) 10a Excretion part contact part 10b Back part 11 Back sheet 12 Top sheet 13 Absorbent sheet 14 Wing 14a Slip stop part 15 Back groove 15a Last part 15b Back part 15c Side part 16 Front groove Reference Signs List 20 sanitary napkin (absorbent article) 25 rear groove 25a rearward portion 25b rear portion 25c side portion 30 sanitary napkin (absorbent article) 37 elastic member 40 sanitary napkin (absorbent article) 48 flap 48a leakproof wall 48b Leak-proof surface 49 Leak-proof surface holding elastic member 50 Male incontinence pad (absorbent article) 50a Excretory part abutment part 50b Rear part 60 Sanitary napkin (absorbent article) 65 Rear groove 65a Last part 65b Rear part 65c Side part 70 Sanitary napkin (absorbent article) 75 Rear groove 75a Last part 80 Sanitary nap Kin (absorbent article) 85 Back groove 90 Sanitary napkin (absorbent article) 99 Front groove P Skin contact surface I Non-skin contact surface

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Misato Hamajima 2606 Kabane-cho Akabane, Haga-gun, Tochigi Pref. In the Kao Corporation Research Institute

Claims (6)

[Claims] A liquid-permeable skin-contacting surface, a liquid-impermeable non-skin-contacting surface, and an absorbing portion interposed between the skin-contacting surface and the non-skin-contacting surface; An absorbent article having a substantially vertically elongated shape, wherein the skin contact surface of an excretory part abutment part which is in contact with a bodily fluid excretion part of a wearer at the time of wearing is formed along a longitudinal direction of the absorbent article. A rear groove formed along the width direction of the absorbent article on the skin-contacting surface of the rear part which is in contact with the rear side of the wearer when worn; The distance between the rearmost part of the rear groove and the rear end of the absorbing part is 1
0 to 50 mm, and the distance between the innermost portions of the pair of front grooves in the width direction of the absorbent article is shorter than the distance between the outermost portions of the rear grooves in the width direction of the absorbent article. An absorbent article characterized by the following. 2. A distance between innermost portions of the pair of front grooves in a width direction of the absorbent article is 20 to 50 mm.
The absorbent article according to claim 1, wherein 3. The absorbent article according to claim 1, wherein each of the pair of front grooves is formed in a convex arc shape inward in the width direction. 4. The front groove and the rear groove have a depth of 1 to 4.
10 mm, and a ratio of a thickness of a portion where the front groove and the rear groove are formed to a thickness of a portion where neither groove is formed is 0.05 to 0.7. The absorbent article according to claim 1, wherein 5. The absorbent article is shrunk over a predetermined length in the longitudinal direction at both side edges along the longitudinal direction of the absorbent article to change the shape of the absorbent article so that the skin contact surface side is concave. The absorbent article according to claim 1, further comprising an elastic member having a curved shape. 6. The absorbent article according to claim 1, wherein leak-proof walls are formed at both side edges along the longitudinal direction of the absorbent article.
3. The absorbent article according to claim 1.