JP2525656Y2 - Disposable diapers - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper, and more particularly to a means for preventing exudate from exuding from the inner surface of a waist.

[0002] Conventionally, in a disposable diaper, in order to prevent exudate from oozing out from an inner sheet around a waist and leaking outward, and to prevent a wearer's underwear from being wet,
It is known that a hydrophobic sheet is bonded to the surface of an inner sheet in a waist.

[0003]

However, the bleeding prevention sheet in the known diaper is entirely bonded to the topsheet, so that despite the fact that the topsheet is made of a flexible fiber nonwoven fabric, The joint area becomes rigid. In addition, the excretion liquid may get over the surface from the inner edge of the exudation prevention sheet, but if it does so, the excretion liquid that has crossed over will not be absorbed into the inside of the diaper again, so it will leak out or wear. Or the undergarment of a person is wetted, so that the effect of providing the seepage prevention sheet is reduced by half.

[0004] This invention has a problem of how to join the above-mentioned bleeding prevention sheet to the topsheet, and especially how to relate it to the waist circumference to solve the above problem. I do.

[0005]

In order to solve the above-mentioned problems, the present invention has a structure in which an absorbing panel is interposed between a liquid-permeable inner sheet and a liquid-impermeable outer sheet, so that the inner sheet of the waist can be closed. It is assumed that a disposable diaper has a hydrophobic bleeding prevention sheet extending in the lateral direction on a surface thereof and joined by a sealing line .

According to the present invention, in the configuration according to the above premise, the seal line (10) is connected to the exudation prevention sheet (5).
Along its peripheral edge except for the inner edge (5a) of the
Characterized in that that.

In this preferred embodiment, an elastic member that expands and contracts in the direction of the waist is attached to the waist.

[0008]

In the diaper according to the present invention having the above-mentioned structure, when the excreted liquid absorbed into the diaper oozes out on the topsheet or diffuses in the topsheet to reach the waist, the diaper may not be there. Since the surface is covered with the oozing prevention sheet, there is no oozing. Moreover, since the inner edge of the bleeding prevention sheet is not joined to the surface of the topsheet,
The excreted liquid penetrates between the topsheet and the seepage prevention sheet without getting over the surface from the inner edge of the seepage prevention sheet, and is absorbed again into the diaper from the topsheet.
Especially when the elastic member is attached to the waist circumference, since the inner portion of the oozing prevention sheet slightly wrinkles due to the contraction force of the elastic member and a plurality of openings are formed between the inner sheet and the top sheet,
The penetration is promoted. The diffusion of the excreted liquid that has entered between the top sheet and the exudation prevention sheet to the outer edge of the waist circumference
It is blocked by the seal line joining the sheets.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The diaper according to the present invention will be described in more detail with reference to the illustrated embodiment.

FIGS. 1 and 2 show an assembled perspective view and an exploded inner perspective view of an example of a diaper to which the present invention is applied. The diaper 1 has first and second cuffs 2 and 3 extending in the length direction formed of a material different from the diaper main body on both sides of the inner surface thereof, and a front waist around the rear waist. And a tape fastener 4 for coupling to each other. Further, the bleeding prevention sheets 5 targeted by the present invention are attached to the inner surfaces of the waist circumferences on the front and rear sides of the diaper 1, respectively. Elastic members (not shown) that extend and contract in the longitudinal direction are attached to the insides of the free edges of the first and second cuffs 2 and 3 and the inside of the waist around the front and rear sides.

FIG. 3 is a plan view showing the inside of the vicinity of the waist circumference on the front side of the diaper 1 in the unfolded state, and FIG.
FIG. 4 shows a cross-sectional view along the line AA in FIG. 3. The waist around the back is
Since it is the same as the front waist circumference, the description is omitted in the following description , but it is necessary that the seepage prevention sheet 5 be joined to at least the front and rear waist circumferences. The configuration of the main body of the diaper 1 is basically the same as that of the known one, and an absorbing panel 8 is interposed between a liquid-permeable inner sheet 6 and a liquid-impermeable outer sheet 7. A fibrous nonwoven fabric, a plastic sheet for the outer sheet 7, and a mixture of pulverized pulp and superabsorbent polymer powder for the panel 8 are used. Although not shown, panel 8
In general, at least the upper and lower surfaces are covered with tissue paper.

From the outer peripheral edge of the panel 8, the inner and outer sheets 6, 7
4 form an extension flap, and FIG. 4 shows a flap 9 extending from one longitudinal edge of the panel 8. A band-like elastic member 12 that expands and contracts in the waist-surrounding direction is attached between the flaps 9 via a hot melt adhesive 13.

The bleeding prevention sheet 5 is made of a hydrophobic fibrous nonwoven fabric or a plastic sheet.
And extending from the outer edge of the flap 9 to one end of the panel 8 and joined to the surface of the inner sheet 6 in such a region. The length dimension of the oozing prevention sheet 5 is at least
Diaper 1 must not be smaller than the width of
It goes without saying that, depending on the type, it may extend over the entire length of the waist circumference.

The bleeding prevention sheet 5 is joined to the surface of the inner sheet 6 by a seal line 10. Seal wire 1
5 is made by hot-melt adhesive or welding (thermal or ultrasonic), but as shown in FIG. 5A, the peripheral edge except the inner edge 5a of the exudation prevention sheet is surrounded by a continuous line, or FIG.
As shown in B, each is provided so that the inner edge 5a of the anti-exudation sheet is left and its peripheral edge is surrounded by intermittent (dot) lines . In the joining by the hot melt adhesive, the adhesive is impregnated between the fibers in the portion of the seal wire 10 and the material of the leaching prevention sheet 5 and the inner sheet 6 is integrated. Sheet 5
And the material of the inner sheet 6 are welded and integrated. Therefore,
The sealing line 10 functions as a barrier against the permeation and diffusion of the excrement.

[0015]

The present invention having the above-described structure should not be evaluated as simply the bleeding prevention sheet (5) joined to the surface of the inner sheet (6) . This idea is
The inner edge (5a) and the outer edge (5 ) of the exudation prevention sheet (5)
b) , that is, by not joining the inner edge (5a) and the surface of the inner sheet (6) , the excreted liquid that flows and diffuses from the central area of the diaper to the vicinity of the waist is inside. The infiltration prevention sheet (5) penetrates between the edges (5a) without getting over the surface of the sheet (5) , and particularly when the elastic member (12) contracts, the inner edge (5a) is Since wrinkles are generated in the vicinity including the inner edge (5
This is because a) rises in a wavy manner from the surface of the inner sheet (6) and forms a plurality of openings between the inner sheet (6) and the surface to further promote the function. Leaching prevention sheet
The excreted liquid that has entered between the (5) and the inner sheet (6) is blocked by the seal line (10) and does not permeate and diffuse toward the outer edge (5b) .

Further , the exudation prevention sheet (5) is provided with a unique function to exude exudates in the vicinity of the waist of the diaper,
Leakage from the vicinity to the outside can be effectively prevented. Moreover, even though the oozing prevention sheet (5) is overlapped and joined to the inner sheet, the overlapping area becomes rigid and does not give the wearer an uncomfortable feeling.

[Brief description of the drawings]

FIG. 1 is an assembled perspective view of a disposable diaper to which the present invention has been applied.

FIG. 2 is an inside perspective view in which the diaper of FIG. 1 is developed.

FIG. 3 is a plan view of the diaper of FIG.

FIG. 4 is an enlarged sectional view taken along line AA of FIG. 3;

FIGS. 5A and 5B are plan views showing various aspects of a seal line for the inner sheet of the bleeding prevention sheet.

[Explanation of symbols]

 5 Exudation prevention sheet 5a Inner edge 5b Outer edge 10 Seal line

Claims (2)

(57) [Scope of request for utility model registration] An absorbent panel is interposed between a liquid-permeable inner sheet and a liquid-impermeable outer sheet, and a hydrophobic oozing-prevention sheet (5) extending laterally on the surface of the inner sheet in the waist. ) Joined by a sealing line (10) , the sealing line (10) is provided along the peripheral edge of the anti-exudation sheet (5) except for the inner edge (5a). > The diaper as described above. 2. The diaper according to claim 1, wherein an elastic member that expands and contracts in the surrounding direction is attached to the waist.