JP3724963B2 - Pants-type absorbent article - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pants-type absorbent article that adheres sufficiently from the crotch part to the depression of the buttocks.
[0002]
[Prior art and problems to be solved by the invention]
In general, a pants-type disposable diaper having a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorbent interposed between both sheets is known.
[0003]
Such a disposable diaper may be provided with a predetermined gap with the absorbent body, particularly in the groin at the crotch so that the solid matter discharged from urine and the human body can be effectively absorbed and captured. It is preferred. However, for sanitary use, incontinence use, and bedtime use, the absorbent body does not sufficiently adhere to the depression of the buttocks, particularly in the crotch part, so that the body fluid flows along the body and leaks.
[0004]
An object of the present invention is to provide a pants-type absorbent article that can effectively absorb discharged bodily fluids such as menstrual blood and urine, and particularly adheres along a hollow of the body from the crotch to the buttocks. To do.
[0005]
[Means for Solving the Problems]
The present invention relates to a pant comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and a substantially vertically long liquid-retaining absorbent disposed between the two sheets at a position corresponding to the crotch. In the absorbent article, the absorbent body has at least one longitudinal groove extending in the longitudinal direction formed on the back sheet side at a position corresponding to the buttocks of the absorbent body, and the pant-type absorbent article On the back sheet side of the article, the object is achieved by providing a pant-type absorbent article in which an elastic member having elasticity is disposed at a position corresponding to the buttock at least in a direction intersecting the longitudinal groove. Is.
[0006]
Here, the longitudinal direction in which the longitudinal groove extends so as to intersect the elastic member does not necessarily mean only a direction parallel to the longitudinal center line of the absorber, and extends a considerable length in the longitudinal direction. If it is a thing, it includes the said longitudinal direction center line and the inclined direction. Moreover, the said longitudinal groove should just be provided with the part into which the longitudinal groove cross section was dented from the outer side surface of the absorber at least concavely, and the shape which the cross section penetrates to the inner surface of an absorber is also included.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The pants-type absorbent article of the present invention will be described with respect to preferred embodiments thereof. As shown in FIGS. 1 to 3, the pant-type absorbent article 10 includes a liquid-permeable top sheet 11 located on the inner side when worn, a liquid-impermeable back sheet 12 located on the outer side when worn, A waist elastic member 17 that forms a waist gather is formed in the waist portion 14. The waist portion 14 includes a substantially vertically long liquid-retaining absorbent body 13 disposed at a position corresponding to the crotch portion when worn between the sheets 11 and 12. The leg elastic members 18 forming leg gathers are respectively disposed in the leg portions.
[0008]
In addition, according to the present embodiment, the two longitudinal grooves 20 extending in the longitudinal direction are formed on the back sheet 12 side, that is, the outer surface side, at the position corresponding to the collar portion of the absorber 13. 5 elastic members 16 different from the elastic members 17 and 18 are extended in the lateral direction on the back sheet side.
[0009]
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. Accordingly, the vertically long absorbent body 13 is fixed to a position corresponding to the crotch part when worn. Further, the top sheet 11 and the back sheet 12 are integrated by joining their peripheral portions by heat welding or the like.
[0010]
In addition, the absorber 13 is not particularly limited to those conventionally known as materials constituting the absorber, such as fluff pulp, absorbent paper, and superabsorbent polymer, which are employed in sanitary napkins, incontinence pads, diapers and the like. It can be used without being covered, and it is used by covering it with a liquid-permeable top sheet or a liquid-impermeable back sheet as necessary. According to this embodiment, the ridge 13a whose basis weight is substantially higher than the surrounding portion is formed in the center portion of the vertically long strip of the absorbent body 13, and at the time of wearing, In particular, a better feeling of adhesion can be obtained at the buttock.
[0011]
In the absorber 13, the thickness of the raised portion 13a under a load of 2.5 g / cm ² is 7 mm, the thickness of these peripheral portions is 4 mm, and the difference is 3 mm. In addition, it is preferable that the thickness of the protruding part 13a is 3-15 mm, and it is more preferable that it is 5-12 mm. Moreover, it is preferable that the thickness around the protruding part 13a is 1-10 mm, and it is more preferable that it is 2-7 mm. Further, the difference in thickness is preferably 2 to 10 mm, and more preferably 2 to 7 mm.
[0012]
The two longitudinal grooves 20 formed on the back sheet 12 side at the position corresponding to the collar portion of the absorbent body 13 are formed by embossing, hot pressing, or the like, and are slightly inclined from the direction parallel to the longitudinal center line of the absorbent body 13. Then, it extends linearly in the longitudinal direction, intersects with the elastic member 16 extended on the back sheet 12 side of the pant-type absorbent article 10 at a position corresponding to the buttocks , and its end is the longitudinal direction of the absorbent body 13. Leads to one edge in the direction. In addition, 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, and more preferably 40 to 60%. The width of the groove is preferably 1 mm or more, and more preferably 2 to 5 mm. The length of the groove is preferably 20% or more of the entire length of the absorber, and more preferably 40 to 60%.
[0013]
The elastic member 16 is formed of a rubber string or the like, and is adhesively fixed along the back sheet 12 so as to extend and be arranged in parallel to each other on the outer surface side of the absorber 13. In addition, as an elastic member which has elasticity in the direction at least intersecting with the longitudinal groove 20 , a sheet-like elastic film or the like can be used, and the back sheet itself may be a sheet having elasticity.
[0014]
According to the present embodiment, when the pant-type absorbent article 10 is attached, the longitudinal groove 20 formed on the back sheet 12 side of the absorbent body 13 functions as a flexible shaft and intersects this. By deforming the central portion of the absorbent body 13 by the urging force of the elastic member 16 and pressing it against the crotch part side, it becomes possible to easily and sufficiently adhere to the recess of the buttocks. A liquid component such as urine can be effectively absorbed. Further, 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 that easily and effectively causes deformation in the processing process. Since the vertical groove 20 is provided up to one edge of the absorber, it is possible to always obtain a stable deformation.
[0015]
The present invention is not limited to the above embodiment, and various modifications can be made. For example, the longitudinal groove 20 can be extended and arranged on the outer surface side of the absorbent body 13 in various shapes as shown in FIGS. 4A to 4F, and is not limited to two, but one Or three or more can be provided. Further, for example, an exterior nonwoven fabric sheet can be provided on the outside of 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 absorbent body or other intermediate material. Furthermore, the longitudinal groove does not necessarily have to reach the edge of the absorber.
[0016]
【The invention's effect】
According to the underpants-type absorbent article of the present invention, it is possible to effectively absorb liquid components such as body fluids and urine by sufficiently adhering to the depressions of the buttocks.
[Brief description of the drawings]
FIG. 1 is a perspective view seen from a rear view showing a wearing state of a pant-type absorbent article according to an embodiment of the present invention.
FIG. 2 is a plan view of the pant-type absorbent article according to the embodiment of the present invention as viewed from the back sheet side.
3 is a cross-sectional view taken along line AA in FIG.
FIGS. 4A to 4F are plan views seen from the outer surface side showing another embodiment of the absorber. FIGS.
[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 part elastic member 18 Leg part elastic member 20 Vertical groove

Claims (4)

A pant-type absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and a substantially vertically long liquid-retaining absorbent disposed between the sheets at a position corresponding to the crotch. In the absorbent body, at least one longitudinal groove extending in the longitudinal direction is formed on the backsheet side at a position corresponding to the buttocks of the absorbent body, and the backsheet of the pant-type absorbent article On the side, a pants-type absorbent article in which an elastic member having elasticity in the direction at least crossing the longitudinal groove is disposed at a position corresponding to the heel portion.   The pants-type absorbent article according to claim 1, wherein the elastic member is at least one thread-like elastic member.   The pants-type absorbent article according to claim 1, wherein the longitudinal groove is provided up to an edge of the absorber. The pants-type absorbent article according to any one of claims 1 to 3, wherein the longitudinal groove includes two longitudinal grooves that are slightly inclined from a direction parallel to the longitudinal center line of the absorbent body and extend linearly.

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