JPH04325153A - Disposal diaper - Google Patents

Abstract

PURPOSE:To provide the disposal diaper which prevents surely a fact that urine and slushy faces, etc., leak out of a side part of the diaper, and also, gives no pain nor discomfort sense to a wearer. CONSTITUTION:This disposal diaper is formed by providing additionally a water repellent leak-free member 5 folded in two on the side of a water permeable sheet of a crotch gather part 4, sticking a water sealing sheet 2 to at least a side edge of one side of the leak-free member concerned 5 in the longitudinal direction of the diaper, and also, extending and providing an elastic pair 51 in an extended state in the folded part of the leak-free member concerned 5.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper that can prevent urine or feces from leaking from the crotch area and does not cause discomfort to the diaper wearer.

0002

[Prior Art] The basic structure of disposable diapers is that an absorbent material is loaded between a water-permeable sheet and a water-sealing sheet, and at the side of the diaper corresponding to the crotch area, there is a flexible structure between the two sheets. The crotch gathers are formed by sandwiching an elastic body. In addition, in recent years, in order to further improve the effect of preventing leakage of urine or feces from the crotch, as shown in Japanese Patent Application Laid-Open No. 59-25741, a water-sealing sheet is extended and this extended portion is placed on the side of the water-permeable sheet. Disposable diapers have been devised in which they are folded back to form a pocket, or as shown in Japanese Patent Laid-Open No. 62-250201, a second barrier sheet is added to the crotch area of the disposable diaper. .

FIG. 5 is a perspective explanatory view showing an example of a disposable diaper equipped with a second barrier sheet 8, and FIG. 6 is a sectional view taken along the line VI--VI in FIG. The second barrier sheet 8 is made by attaching a band-shaped water-repellent sheet 81 along the longitudinal direction of the diaper main body, with one side edge thereof attached to the surface of the water-permeable sheet 3 on the absorbent side of the crotch gather part 4, and The side edges are folded back into a bag shape, and a stretchable elastic member 82 is bonded under tension inside the bag. Therefore, a wave-shaped stretchable portion is formed in the upper portion of the second barrier sheet 8 and is configured to stand up against the diaper body, thereby reducing leakage of urine and feces at the crotch region.

0004

[Problems to be Solved by the Invention] By the way, the second barrier sheet 8 uses a member different from the water-impermeable sheet 3, the water-sealing sheet 2, etc., and is bonded to the surface of the water-permeable sheet 3. Therefore, it was necessary that the adhesion position of the lower side edges of the second barrier sheet 8 be brought exactly close to the crotch gathers 4. This is because when the second barrier sheet 8 rises due to the contraction action of the elastic member 82, the water-permeable sheet 8 is designed to be pulled upward by this rise. If the water-permeable sheet 3 is attached too close to the top surface of the absorbent body 6, the water-permeable sheet 3 will separate from the upper surface of the absorbent body 6, thereby inhibiting the absorption of urine and the like. In particular, the above-mentioned separation interval (degree of rise) is maximum at the longitudinal center of the diaper body, and urine falls directly onto the absorbent body 6 and is not absorbed, but flows along the side edges of the absorbent body 6 and flows into the crotch gathers 4.
It has been experienced that leakage to the outside occurs through the

On the other hand, the second barrier sheet 8 is
As shown in the figure, when bonded in a position close to the crotch gathers 4, leakage of urine, etc. as described above is reduced; Urine, etc. that have been pushed back by the second barrier sheet 8 will flow into the resulting space, and the urine, etc. will not be captured quickly, causing discomfort to the wearer. Furthermore, when the water-permeable sheet is made of a nonwoven fabric, urine may leak out to the outside of the crotch gathers due to the capillary action of the water-permeable sheet itself.

Furthermore, since the adhesive portion of the elastic member 82 in the second barrier sheet 8 is exposed, the appearance and feel during use are deteriorated. For example, when the second barrier sheet 8 is made of a hard plastic film or the like, the wearer feels uncomfortable when touching the second barrier sheet 8.

[0007] In view of the above drawbacks, the present inventors therefore provide a disposable diaper that does not cause discomfort to the wearer and can prevent leakage of urine and feces from the crotch area as much as possible. After repeated research for this purpose, the present invention was completed.

[0008]

[Means for Solving the Problems] The present invention, which has achieved the above objects, includes a water-repellent leak-proof member folded in half attached to the water-permeable sheet side of the crotch gather portion in the longitudinal direction of the diaper. At least one side edge of the folded piece of the leak-proofing member is attached to the water-sealing sheet in the longitudinal direction, and an elastic body is stretched in a stretched state inside the folded part of the leak-proofing member. It is something.

[0009]

[Operation and Embodiments] FIG. 1 is a plan view showing a typical embodiment of the present invention, and FIG. 2 is a sectional view taken along the line II--II in FIG. The main structure of the disposable diaper is the same as the previous one, with an absorbent body 6 between the water-permeable sheet 3 and the water-sealing sheet 2.
is loaded, and elastic bodies 41, 41, .
are intermittently adhered in a stretched state to form crotch gathers 4,4.

The characteristic structure of the present invention is that leak-proof members 5, 5 are attached to the water-permeable sheet sides of the crotch gathers 4, 4, and the leak-proof members 5 are made of a water-repellent material. For example, the leak-proof member 5 is made of a water-repellent nonwoven fabric or a soft synthetic resin film having air permeable pores, and is folded in half in the width direction and placed along the longitudinal direction of the disposable diaper. As shown in FIG. 2, one side edge 5A of the leakage prevention member 5 is bonded with adhesive A4 at least in the crotch area.
The crotch gathers 4 are bonded to the water-sealing sheet 2 on the outside in the diaper width direction, and the other side edges 5B are bonded to the upper surface of the water-permeable sheet 3 on the inside of the crotch gathers 4 in the diaper width direction with adhesive A2.

Further, an elastic body 51 in a stretched state is intermittently adhered to the inside of the folded portion of the leakage prevention member 5, and an elastic gather is formed at the folded portion. It is preferable that both ends of the leak-proofing member 5 in the diaper longitudinal direction are glued to the upper surface of the water-permeable sheet 3 with the folded portions lying down, thereby stably joining the leak-proofing member 5 to the disposable diaper main body. It will be done.

FIG. 3 is a partially cutaway explanatory view of the disposable diaper having the above structure, in which the leak-proofing member 5 is raised above the crotch gathers 4 with respect to the diaper body due to the contractile force of the elastic body 51. When wearing a diaper, the leakage prevention member 5 fits around the wearer's crotch. Therefore, urine and soft feces are prevented from leaking beyond the crotch gathers 4 at one side edge 5B of the leakage prevention member 5, and are reliably absorbed into the absorbent body 6 located on this side. Even if urine or the like oozes out beyond the crotch gathers 4, the other side edges 5A of the leak-proof member 5 and the water-sealing sheet 2 are adhered along the longitudinal direction of the diaper, so the urine or the like will not leak to the outside. Prevent any leakage. That is, the adhesion on one side edge 5B of the leakage prevention member 5 may be intermittent, but the adhesion on the other side edge 5B may be intermittently.
The bonding method A is continuous bonding along the longitudinal direction at least in the portion corresponding to the crotch.

Furthermore, since the elastic body 51 is housed inside the folded portion of the leak prevention member 5, the leak prevention member 5 can be brought into soft contact with the wearer. Further, the intermittent adhesive layer A3 does not cause pain to the wearer.

FIG. 4 is a partially cutaway explanatory view showing another embodiment of the present invention, in which a flat elastic body 42 is provided in the crotch gather portion 4.
In addition, both edges 5A and 5B of the leakage prevention member 5 are adopted.
Both are adhered to the water-sealing sheet 2 (A4, A5) to further ensure leakage prevention. Further, the above leakage prevention member 5 may be attached in the width direction of the diaper at the longitudinal end of the disposable diaper, thereby preventing leakage of urine, etc. in the ventral direction or the dorsal direction as much as possible. can do.

[0015]

[Effects of the Invention] Since the present invention is constructed as described above, it is possible to reliably prevent urine, etc. from leaking out of the diaper, and also to prevent urine, etc. from leaking out of the diaper, and also to prevent urine, etc. from leaking out of the diaper, and from causing pain or discomfort to the wearer. That's no longer the case.

[Brief explanation of drawings]

FIG. 1 is an explanatory plan view showing a typical embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG. 1;

FIG. 3 is a partially cutaway explanatory view showing an example of the usage state of FIG. 1;

FIG. 4 is an explanatory cross-sectional view showing another embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a conventional example.

6 is a sectional view taken along the line VI-VI in FIG. 5; FIG.

[Explanation of symbols]

1 Diaper body 2 Water sealing sheet 3 Water permeable sheet 4 Crotch gathers 5 Leak prevention member 51 Elastic body

Claims (1)

[Claims] Claim 1: A disposable product comprising a crotch gather portion in which an absorbent material is loaded between a water-permeable sheet and a water-sealing sheet, and an elastic body is interposed between the water-permeable sheet and the water-sealing sheet in a portion corresponding to the crotch. In the diaper, a water-repellent leak-proof member folded in two is attached to the water-permeable sheet side of the crotch gather portion in the longitudinal direction of the diaper, and at least one side edge of the folded piece of the leak-proof member A disposable diaper, characterized in that an elastic body is attached to the water-sealing sheet along the longitudinal direction and stretched in a stretched state inside the folded part of the leak-proof member.