JP2000140022A - Underpants type absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underpants type absorbent article which can effectively absorb liquid contents such as humor and urine, and can closely join along a recess of a human body especially from the crotch to the buttocks. SOLUTION: This underpants type absorbent article 10 is equipped with a liquid-permeable top sheet 11, a liquid-impermeable back sheet 12, and a substantially vertically long liquid-retaining absorbent body 13 which is disposed at a location corresponding to the crotch section, between both sheets 11 and 12, and on the absorbent body 13, at least one line of a vertical groove 20 extending in the longitudinal direction, is formed on the back sheet 12 side at a location corresponding to the buttocks section of the absorbent body 13, and also, an elastic member 16 having stretchability is disposed at least in the direction which crosses the vertical groove 20 of the underpants type absorbent article 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pants-type absorbent article which sufficiently adheres from the crotch to the buttock.

[0002]

2. Description of the Related Art In general, pants having a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retentive absorber interposed between the two sheets. Type disposable diapers are known.

[0003] Such a disposable diaper has a predetermined gap between the absorbent body and the buttocks in the crotch, so that urine and solids discharged from the human body can be effectively absorbed and captured. It is preferred to provide. However, for sanitary use, incontinence use, and bedtime use, the absorbent does not sufficiently adhere to the recesses in the crotch, especially in the buttocks, so that bodily fluids flow along the body and cause leakage.

The present invention provides a pants-type absorbent article which can effectively absorb discharged body fluids such as menstrual blood and urine, and in particular, adheres along the hollow of the body from the crotch to the buttocks. With the goal.

[0005]

According to the present invention, there is provided a liquid-permeable topsheet, a liquid-impermeable backsheet, and a substantially vertically long liquid holding member disposed at a position corresponding to a crotch between the two sheets. A pants-type absorbent article comprising: an absorbent body, wherein the absorbent body has at least one longitudinal groove extending in a longitudinal direction of the absorbent body on the backsheet side at a position corresponding to the buttocks of the absorbent body. The above object has been achieved by providing a pants-type absorbent article, wherein an elastic member having elasticity is disposed in a direction at least intersecting with the longitudinal groove of the pants-type absorbent article. is there.

Here, the longitudinal direction in which the longitudinal groove extends so as to intersect with the elastic member does not necessarily mean only a direction parallel to the longitudinal center line of the absorber, but a considerable length in the longitudinal direction. If it is extended, it also includes the above-mentioned longitudinal center line and the inclined direction. Further, the vertical groove only needs to have a portion whose vertical groove cross section is at least concavely recessed from the outer surface of the absorber, and includes a shape whose cross section penetrates to the inner surface of the absorber.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The pants-type absorbent article of the present invention
The preferred embodiment will be described. As shown in FIGS. 1 to 3, the pants-type absorbent article 10 has a liquid-permeable top sheet 11 positioned inside when worn, and a liquid-impermeable back sheet 12 positioned outside when worn.
And a substantially elongate liquid-retentive absorber 13 disposed between the sheets 11 and 12 at a position corresponding to the crotch portion when worn, and a waist elastic member forming a waist gather at the waist portion 14. 17 and leg elastic members 18 forming leg gathers are provided at the leg portions, respectively.

Further, according to this embodiment, two longitudinal grooves 20 extending in the longitudinal direction are formed on the backsheet 12 side, that is, the outer surface side at a position corresponding to the buttocks of the absorber 13. Five elastic members 16 different from the elastic members 17 and 18 so as to intersect with the vertical grooves 20.
Are provided to extend laterally on the back seat side.

The liquid-permeable top sheet 11 and the liquid-impermeable back sheet 12 are the same as those used in conventional pants-type disposable diapers. The vertically long absorbent body 13 is fixed to a position corresponding to the crotch portion when worn, via an agent or the like. The top sheet 11 and the back sheet 12 are integrated by joining their peripheral edges by heat welding or the like.

[0010] The absorbent 13 is made of fluff pulp, which is used for sanitary napkins, incontinence pads, diapers and the like.
It can be formed using a conventionally known material constituting the absorber without any particular limitation, such as absorbent paper, superabsorbent polymer, etc., and if necessary, a liquid-permeable topsheet or liquid-impermeable material Use by covering with a sex back sheet. According to this embodiment, a raised portion 13a having a basis weight substantially higher than that of the surrounding portion is formed in the central portion of the vertically long band of the absorber 13, and the crotch portion at the time of mounting is formed. In particular, a better feeling of adhesion can be obtained at the buttocks.

In the absorber 13, the thickness of the raised portions 13a under a load of 2.5 g / cm ² is 7 mm, the thickness of the surrounding portions is 4 mm, and the difference is 3 mm. In addition, the thickness of the raised portion 13a is preferably 3 to 15 mm, more preferably 5 to 12 mm. The thickness around the raised portion 13a is 1 to 10 mm.
Is preferably, and more preferably, 2 to 7 mm. Furthermore, the difference between these thicknesses is preferably 2 to 10 mm, more preferably 2 to 7 mm.

The two vertical grooves 20 formed on the side of the back sheet 12 at positions corresponding to the buttocks of the absorber 13 are formed by embossing, hot pressing, or the like, and are parallel to the longitudinal center line of the absorber 13. The elastic member 16 extends in a straight line in the longitudinal direction with a slight inclination, and intersects with the elastic member 16 extended and provided on the back sheet 12 side of the pants-type absorbent article 10, and the end thereof extends in the longitudinal direction of the absorber 13. To one edge. In order to obtain sufficient flexibility, the depth of the vertical groove 20 is preferably 20% or more of the thickness of the absorber 13, more preferably 40 to 60%. The width of the groove is
1 mm or more is preferable, and 2 to 5 mm is more preferable. Furthermore, the length of the groove is preferably 20% or more of the entire length of the absorber, more preferably 40 to 60%.

The elastic member 16 is made of a rubber cord or the like, and is adhered and fixed along the back sheet 12 so as to be extended laterally in parallel to the outer surface of the absorber 13. As the elastic member, a sheet-like stretchable film or the like can be used, and the backsheet itself may be a stretchable sheet.

According to this embodiment, when the pants-type absorbent article 10 is mounted, the vertical groove 20 formed on the side of the back sheet 12 of the absorber 13 functions as a flexible shaft. The central part of the absorber 13 is deformed so as to be raised by the urging force of the elastic member 16 intersecting with the elastic member 16 and pressed against the crotch part, so that the absorber 13 can easily and sufficiently adhere to the recess of the buttocks. Thereby, liquid components such as body fluids and urine can be effectively absorbed. Also,
According to the present embodiment, since the elastic member 16 is a thread-like elastic member such as a rubber string, it is possible to obtain an urging force for easily and effectively deforming in a processing step, Since 20 is provided up to one edge of the absorber, stable deformation can always be obtained.

The present invention is not limited to the above embodiment, and various modifications are possible. For example, the flute 20
The absorber 1 has various shapes as shown in FIGS.
3 can be extended on the outer surface side, and the number is not limited to two but may be one or three or more. Further, for example, an exterior nonwoven fabric sheet can be provided outside the backsheet 12 so as to cover it, and an elastic member 16 can be provided between the exterior nonwoven fabric sheet and the backsheet 16. That is, the elastic body is not limited to the back sheet but may be an absorber or other intermediate material. Furthermore, the flutes do not necessarily have to extend to the edge of the absorber.

[0016]

According to the pants-type absorbent article of the present invention,
It can sufficiently absorb liquid components such as bodily fluids and urine in close contact with the buttocks.

[Brief description of the drawings]

FIG. 1 is a perspective view seen from a rear view showing a wearing state of a pants-type absorbent article according to an embodiment of the present invention.

FIG. 2 is an exploded plan view showing the pants-type absorbent article according to the embodiment of the present invention, viewed from the back sheet side.

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

FIGS. 4A to 4F are plan views of another embodiment of the absorber viewed from the outer surface side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Pants type absorbent article 11 Top sheet 12 Back sheet 13 Absorber 14 Waist part 15 Leg part 16 Elastic member 17 Waist elastic member 18 Leg elastic member 20 Vertical groove

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroko Sugiura 2606 Kabane-cho, Akaga-cho, Haga-gun, Tochigi Pref. (72) Inventor Minoru Nakanishi 2606 Akabane-Akabane, Kaiga-cho, Haga-gun, Tochigi Pref. Terms (reference) 3B029 BA02 BD12 BD13 BF07 DA00 4C003 AA06 HA05 4C098 AA09 CC12 CC14 CC28 CE05

Claims (3)

[Claims] 1. A liquid-permeable topsheet, a liquid-impermeable backsheet, and a substantially vertically long liquid-retentive absorber disposed between the two sheets at a position corresponding to a crotch portion. A pants-type absorbent article, wherein the absorber comprises:
At least one longitudinal groove extending in the longitudinal direction is formed on the back sheet side at a position corresponding to the buttocks of the absorber, and has elasticity in a direction at least intersecting with the longitudinal groove of the pants-type absorbent article. A pants-type absorbent article provided with an elastic member. 2. The pants-type absorbent article according to claim 1, wherein the elastic member is at least one thread-like elastic member. 3. The pants-type absorbent article according to claim 1, wherein the vertical groove is provided up to an edge of the absorber.