JP3129933B2 - Open 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.

[0002]

2. Description of the Related Art Conventionally, one end of a tape fastener is fixed to left and right side edges of a back body of an open-type disposable diaper, and a free end extending sideways from the side edge is peeled to an outer surface of a front body. Techniques for wearing diapers with the fixation possible are well known.

[0003]

In the above-mentioned prior art, a relatively high rigidity kraft paper or plastic film is used for the tape fastener so that the front and rear bodies of the worn diaper can be firmly connected around the waist. May be used. When this type of tape is tensioned, there is a problem in that the periphery of the tape does not easily deform even when touched by the skin, but rather acts to bite into the skin, which may give a stimulus such as pain or discomfort.

An object of the present invention is to solve the above-mentioned problem by forming an adhesive portion for fastening on the inner surface of the side edge of the diaper instead of the conventional tape fastener.

[0005]

Means for solving the above problems The present invention is as follows to solve the above problems.

In the present invention, a liquid-absorbent core is interposed between the liquid-permeable top sheet and the liquid-impermeable back sheet, and is attached to at least one of the left and right sides of the front and rear bodies to adhere to the other body. A detachable fastening means, said fastening means
Is assumed to be a disposable diaper in which the adhesive constituting the above is applied to the inner surface of the one side .

[0007] In such assumption, the outer surface of the side in at least the coating zone of the adhesive, and to this end
Communicating with said one end portion of the release paper is peeled off non affixed with the other end portion, that the other end portion are releasably contact with the PSA bent to the adhesive side, of the present invention It is a feature.

[0008] The present invention, as a preferred embodiment,
Between the peelably end you have the fixed and the other end portion that is in contact with the SL release paper, the cut guide portion that allows the bisecting the left and right is formed, the front
Before extending the left and right side portions of the rear body from the side edges of the core
The release paper is composed of a front and back sheet, and the one end of the release paper is
It must be interposed between the front and back sheets, and
The other end of the release paper is bent toward the adhesive and the adhesive
The other end is in the state of being in contact with the adhesive so as to be peelable.
This includes forming the holding portion beyond the area of the adhesive.

[0009]

In the disposable diaper constructed as described above, one of the front and rear body portions is joined to the other body side portion by using an adhesive applied thereto. The release paper that protects the adhesive is peeled off before joining, and unnecessary portions are cut off at the cutting guide. The release paper is fixed to the outer side of the side edge corresponding to the portion where the adhesive is applied, thereby increasing the rigidity of the portion and facilitating the operation of joining one side portion to the other side edge portion.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the disposable diaper according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a partially broken plan view showing the front side of the diaper 1. As shown in FIG. The diaper 1 is composed of a top sheet 2 made of a liquid-permeable nonwoven fabric, a back sheet 3 made of a liquid-impermeable plastic film, and a mixture of pulverized pulp and a superabsorbent polymer interposed between the two sheets 2 and 3. The front and back sheets 2 and 3, which are constituted by the liquid-absorbent core 4, have a portion extending from the periphery of the core 4 joined in a watertight manner. The front-back direction of the diaper 1 is composed of a front body 6, a back body 7, and a crotch region 8, and the left and right side edges of the crotch region 8 are cut out so as to easily fit around the legs. Inside the left and right side edges and back body 7
On the inner side of the end edge, the leg elastic members 10 and the waist elastic members 11 along the respective edges are attached to the inner surface of at least one of the front and back sheets 2 and 3 in an extended state. . On both left and right side edges of the back body 7, there are release papers 13 made of a band-shaped plastic film covering an adhesive 17 for connecting the back body 7 to the front body 6.

FIG. 2 is a view taken along the line II-II in FIG. One end 15 of the release paper 13 is fixed to each inner surface of the front and back sheets 2 and 3 by a hot melt adhesive (not shown) so as not to be peelable. Other end 16 connected to one end 15,
A portion extending from the side edges to the side, folded inwardly of the diaper 1, separably to the adhesive 17 coated on the outer surface of the topsheet 2 in the region of the other end portion 16 thereof folded faces Abuts. Other end 16 distal end portion 16A
Extends outside the adhesive 17 and serves as a holding portion when peeling off. Between the fixed end 15 of the release paper 13 and the opposite end 16 that comes into contact with the release paper 13, the release paper 1
There is a cutout guide 18 such as a perforation that can divide 3 into two, or other intermittent cut lines.

FIG. 3 is a perspective view of the diaper 1 in a worn state, in which a part of the release paper 13 has been cut away. In this figure, the release paper 13 in FIG. 2 is peeled off by holding the front end portion 16A for gripping, and the side of the back body 7 is attached to the outer surface of the back sheet of the side of the front body 6 via the adhesive 17 exposed thereby. Affixed releasably. After sticking, the release paper 13 is cut off at the guide portion 18,
Removing the other end portion 16 which has become unnecessary. The remaining portion 18A near the cutting guide portion 18 can be used as a holding portion when the front and rear bodies 6, 7 are peeled off. As shown in FIG. 2, since the front and back sheets 2 and 3 and the release paper 13 are overlapped on the part to which the adhesive 17 is applied, the part has higher rigidity than its surroundings, and Easy to join.

In the diaper 1, the release paper 13 is applied to the adhesive 1
In order to be able to be peeled off from the adhesive 7, a release agent is applied to the contact surface of the opposite end portion 16 or the contact surface is roughened so that a substantial contact area with the adhesive 17 is required. Or to a lesser extent. The release paper 13 may be fixed to the outer surface of the back sheet 3 in addition to the one end 15 interposed between the front and back sheets 2 and 3 as shown in FIG. The diaper 1 may be made of a material commonly used in the art in addition to the exemplified materials.

[0015]

In the disposable diaper according to the present invention, one of the right and left side portions of the front and rear body and the other right and left side portion are joined at a portion where they are overlapped with each other. The problem of discomfort caused by biting can be solved, and instability of the joint portion, which is observed in the case of joining via a tape fastener, can be eliminated. The part of the side coated with the pressure-sensitive adhesive is lined with release paper and has higher rigidity than the surroundings, so that the part can be quickly identified with respect to the surroundings, and the joining operation becomes easy. The release paper can be cut along the cut-out guide portion and the unnecessary portion can be discarded when worn, so that it does not become an obstacle.

[Brief description of the drawings]

FIG. 1 is a partial cutaway plan view of a diaper.

FIG. 2 is an end view taken along line II-II of FIG.

FIG. 3 is a perspective view of the diaper in a worn state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Diaper 2 Top sheet 3 Back sheet 4 Absorbent core 6 Front body 7 Back body 13 Release paper 15 One end 16 Opposite end 17 Adhesive (fastening means) 18 Cutting guide

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A61F 13/49 A61F 5/44 A61F 13/58

Claims (4)

(57) [Claims] 1. A liquid-absorbent core is interposed between a liquid-permeable top sheet and a liquid-impervious back sheet, and can be adhered to and separated from at least one of the left and right sides of the front and rear bodies with respect to the other body. A fixing means is provided , and the adhesive constituting the fixing means is
A disposable diaper was applied to the inner surface of one side, the outer surface of the side in at least the coating zone of the pressure-sensitive adhesive, said release paper having the other end portion continuous thereto one end portion
The diaper according to claim 1, wherein one end of the diaper is fixed so as not to be peeled off, and the other end is bent toward the adhesive so as to be peelably contacted with the adhesive. 2. The release paper is in contact with the release paper so as to be peelable.
2. The diaper according to claim 1, wherein a cut-out guide portion is formed between the other end portion and the fixed one end portion so as to be able to bisect right and left. (3) The left and right sides of the front and rear body are
The front and back sheet extending from the side edge, and the release
The one end of the paper is integrally interposed between the front and back sheets.
The diaper according to claim 1, wherein (4) The other end of the release paper toward the adhesive
In a state where it is folded and peelably contacted with the adhesive,
The other end forms a holding portion beyond the area of the adhesive.
The diaper according to claim 1.