JP2588834Y2 - 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 excellent in wearing feeling, and more particularly to a disposable diaper for a high-aged child or an adult.

[0002]

2. Description of the Related Art A so-called flat type disposable diaper has a main body composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber interposed between the two sheets. A tape fastener is provided on a back side of the diaper main body, and a target tape is disposed on a ventral side of the diaper main body. When attaching the disposable diaper, the tape fastener on the back side is attached to the target tape, and the diaper body is attached to the wearer.

[0003] In order to facilitate positioning at the time of mounting, such a target tape has been used in which a release agent is applied to the surface of the target tape or a film is laminated so that the tape fastener can be peeled off. I have. As such a conventional technique, for example, Japanese Patent Laid-Open No.
JP, JP-A 1-272804, JP-A 1-2
No. 46401 and the like.

As a method of bonding the target tape to the abdomen of the diaper main body, a method of applying an adhesive 29 to the entire back surface of the target tape 8 has been used as shown in FIG.

[0005]

However, if the adhesive 29 is applied to the entire back surface of the target tape 8 and adhered, the adhesive portion of the target tape is strengthened, and the mounting feeling on the abdominal side is particularly impaired. Adhesive applied to the entire surface prevents moisture leakage of the leak-proof sheet,
There is a problem of causing "rash".

[0006] In particular, in the case of high-month-old babies and children, the bonding area of the target tape is larger than that of infants and the like.
The area of the moisture-impermeable part due to such adhesion is large,
There is a problem that "rash" is remarkable. Therefore, the purpose of the present invention is a disposable diaper that gives a good feeling of wearing,
It is still another object of the present invention to provide a disposable diaper capable of maintaining moisture permeability in the abdomen.

[0007]

According to the present invention, there is provided a diaper body having a liquid-permeable topsheet, a moisture-permeable leakproof sheet, and an absorber located between the two sheets. A tape fastener is provided on the side flap on the back side, and the tape fastener can be stuck and peeled on the surface of the leakproof sheet on the ventral side of the diaper main body.
In a disposable diaper to which a moisture-impermeable target tape is fixed by an adhesive, the leak-proof sheet is made of a thermoplastic resin.
Moisture permeable liquid impervious stretched by adding filler to resin
The target table is formed using a conductive sheet.
The seal and the leak-proof sheet are partially and partially bonded by the adhesive.
Are bonded so that their non-adhesive parts communicate with the outside air
The above object has been achieved by providing a disposable diaper characterized by the following.

[0008]

[Action] The disposable diaper according to the present invention, when worn,
The tape fastener provided on the side flap on the back side is stuck to the target tape adhered to the abdominal side and stopped. In this mounting state, the target tape is partially adhered to the diaper main body, so that the target tape has no tension and can flexibly act on the movement of the body, so that a good mounting feeling can be obtained.

Further, since the non-adhesive portion of the diaper main body of the target tape is communicated with the outside air, without having to seal between the diaper body and the target tape, it is possible to circulate humidity and external, disposable It is possible to maintain the moisture permeability of the abdomen of the diaper.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. A disposable diaper for adults will be used as an example of the disposable diaper of the present invention. FIG.
FIG . 3 is a view showing an adhesion state between a target tape and a leak-proof sheet in the disposable diaper of the first embodiment , and FIGS. 3 to 9 are views showing an adhesion state between the target tape and the leak-proof sheet in other examples. .

As shown in FIG. 1, a disposable diaper 1 according to a first embodiment of the present invention has a liquid-permeable topsheet 2.
And a diaper main body 5 having a liquid-impermeable leak-proof sheet 3 and an absorber 4 located between the two sheets. The diaper main body 5 has a back side 5a on its side flap 6 with a tape fastener. On the surface of the leakproof sheet 3 on the abdominal side 5b of the diaper body 5, a target tape 8 to which the tape fastener 7 can be attached and peeled is attached to the tape fastener 7 by an adhesive 9. The target tape 8 and the leakage prevention sheet 3 are partially adhered by the adhesive 9 and are adhered so that the non-adhesion portion 10 communicates with the outside air.

The above-mentioned top sheet 2 absorbs excrement from the absorbent 4
It is preferable that the liquid-permeable sheet having a feel close to underwear is used as such a liquid-permeable sheet.
For example, a woven fabric, a nonwoven fabric, a porous film and the like are preferable.
Also, a method of applying a hydrophobic compound such as a silicone oil agent or paraffin wax to the peripheral portion of the top sheet 2 or a method of applying a hydrophilic compound such as an alkyl phosphate ester in advance and washing the peripheral portion with warm water are used. Water treatment,
Leakage due to bleeding of urine or the like at the peripheral portion can be prevented.

The leak-proof sheet 3 is formed using a moisture-permeable liquid-impermeable sheet that transmits a stretched vapor obtained by adding a filler to a thermoplastic resin . The leakproof sheet is
It may be formed of only this liquid impermeable sheet.
Those with a feeling close to wearing, for example, a nonwoven fabric or a woven fabric
It may be used as a composite material or the like. The absorbent 4 is preferably composed mainly of defibrated pulp and used in combination with a high-molecular-weight water-absorbing polymer, and is preferably a mixture obtained by heat-treating a mixture of a thermoplastic resin, cellulose fibers, and a high-molecular-weight water-absorbing polymer. The location of the high-molecular-weight water-absorbing polymer is
It may be any of a middle layer and a lower layer, and may be a mixture with pulp. The high-molecular water-absorbing polymer has a holding performance of absorbing and holding a liquid 20 times or more its own weight, and is preferably in the form of particles having a gelling property,
As such a polymer water-absorbing polymer, a starch-acrylic acid (salt) graft copolymer, a saponified starch-acrylonitrile copolymer, a crosslinked sodium carboxymethyl cellulose, an acrylic acid (salt) polymer and the like are preferable. The shape is preferably an hourglass shape that matches the body shape of the wearer, but may be rectangular.

The main body 5 is formed in an hourglass shape with a narrow center in the longitudinal direction (vertical direction in the figure), and a wide portion of the hourglass shape has a back portion 5a located on the back side of the wearer. The other wide part has an abdominal part 5 located on the abdomen of the wearer.
b is formed. The back flaps 5 a have side flaps 6 on the left and right sides (in the width direction of the absorber) from the end of the absorber 4.
A tape fastener 7, 7 is juxtaposed to each of the side flaps 6, 6, and the tape fasteners 7, 7 are attached to a target tape 8 when worn, and fastened. It has become.

The target tape 8 has a large area so as to occupy most of the abdominal part 5b of the diaper main body, so that the adhesive region of the tape fasteners 7, 7 can be widened. Specifically, 10 to 40% of the area of the entire leakproof sheet of the diaper body is occupied. A release agent is applied to the surface of the target tape 8, so that the tape fasteners 7 and 7 can be easily separated, and positioning and wearing of the diaper can be easily performed.

The back surface of the target tape 8 is adhered to the leak-proof sheet 3 on the ventral side of the diaper main body 5 with an adhesive 9. The adhesive 9 is applied to the target tape 8 in a plurality of linearly spaced lines. That is, the adhesive 9 applied linearly at equal intervals connects the leak-proof sheet 3 of the diaper main body and the target tape 8, and the space 10 of the non-adhesive portion between the adjacent adhesives 9, 9. Will be formed. The non-adhesive portion 10 has a space 1 for the non-adhesive portion.
An opening 10a is formed to communicate the outside air with the outside air.

Since the opening 10a is formed and the space 10 of the non-adhesive portion is communicated with the outside air, the humidity is not confined in the space 10 of the non-adhesive portion from the moisture-permeable leakproof sheet. The non-adhesive part of the tape 8 can be made air-permeable, so that "unevenness" and "rash" in this part can be prevented. As a material of the adhesive 9, a hot melt adhesive mainly containing an ethylene / vinyl acetate copolymer or an ethylene / acrylic acid copolymer is preferable.

The width of the adhesive 9 is preferably 0.05 to 3 mm, and the height thereof is preferably 0.05 to 2 mm. Further, the space 10 of the non-bonded portion between the adhesives 9 at this time is preferably 5 to 20 mm in width. The state of application of the adhesive may be a bead shape or a planar shape, and a bead of the adhesive may be spirally applied to a wide pattern.

Next, the operation of the first embodiment will be described. When the disposable diaper 1 is worn, the back side 5a is applied to the back of the wearer's waist, the abdomen 5b is applied to the abdomen, the side flaps 10 are extended to the abdomen, and the tape fasteners 7, 7 are applied to the abdomen. And affixed to an arbitrary position of the target tape 8 in the part. In this mounting state, the target tape 8 is partially adhered to the diaper main body 5 so that it has no tension and can flexibly act on the movement of the body, so that a good mounting feeling can be obtained.

While the disposable diaper is worn, the humidity (humidity) in the diaper tends to evacuate to the outside air via the leak-proof sheet 3, but on the abdominal side where the target tape 8 is disposed, the leak-proof is performed. The humidity that has passed through the sheet 3 is confined in the space 10 of the non-bonded portion defined by the target tape 8 and the adhesive 9, and the space 10 has the opening 10.
a, the moisture is released to the outside air through the opening 10a. Therefore, it is possible to maintain moisture permeability in the diaper body, particularly in the abdominal part 5b to which the target tape 8 is adhered.

[0021]

The present invention is not limited to the first and second embodiments described above, but can be variously modified without departing from the gist of the present invention.

For example, the method of bonding the adhesive may be such that the space of the non-bonded portion between the abdomen and the target tape is in communication, and the bonding state of the adhesive is as shown in FIG. Dimensions and widths 3 to 3 larger than those of the first embodiment
Adhesion may be made at 10 mm, or as shown in FIG. 4, a relatively wide width, for example, a width of 10 to 30 mm may be used.

The bonding state of the adhesive may be obtained by cutting a plurality of adhesives arranged in a line as shown in FIG. 5, a plurality of cuts as shown in FIG.
As shown in FIG. Further, as shown in FIG. 8, the distance between the adhesives arranged linearly, that is, the width of the non-adhesive portion may be changed. In this case, it is preferable to increase the adhesive density in a region where the fixing frequency is high. Further, as shown in FIG. 9, the width of the bonding portion may be changed together with the spacing of the adhesive.
In this case as well, the bonding density in the region where the fixing frequency is high is similarly increased.

[0025]

[0026]

According to [devise effects] te target tape and the said barrier sheet to the present invention of a disposable diaper adhered to partially and non-adhesive portion 10 is communicated with the outside air, the ventral together provide good fit Can maintain the moisture permeability.

[Brief description of the drawings]

FIG. 1 is a view showing a bonding state between a target tape and a leak-proof sheet in a disposable diaper according to a first embodiment;
(A) is a plan view and (B) is a side view.

FIGS. 2A and 2B are views showing a bonding state between a target tape and a leak-proof sheet in another embodiment, wherein FIG. 2A is a plan view and FIG. 2B is a side view.

FIGS. 3A and 3B are diagrams showing a bonding state between a target tape and a leak-proof sheet in another embodiment, wherein FIG. 3A is a plan view and FIG. 3B is a side view.

FIGS. 4A and 4B are diagrams showing a bonding state between a target tape and a leak-proof sheet in another embodiment, wherein FIG. 4A is a plan view and FIG. 4B is a side view.

5A and 5B are diagrams showing a bonding state between a target tape and a leak-proof sheet in another embodiment, wherein FIG. 5A is a plan view and FIG. 5B is a side view.

FIGS. 6A and 6B are diagrams showing a bonding state between a target tape and a leakage prevention sheet in another embodiment, wherein FIG. 6A is a plan view and FIG. 6B is a side view.

FIGS. 7A and 7B are diagrams showing a bonding state between a target tape and a leak-proof sheet in another example, where FIG. 7A is a plan view and FIG. 7B is a side view.

8A and 8B are diagrams showing a state of adhesion between a target tape and a leak-proof sheet according to another embodiment, wherein FIG. 8A is a plan view and FIG. 8B is a side view.

FIG. 9 is a view showing an adhesion state between a target tape and a leak-proof sheet in a conventional disposable diaper, and (A).
Is a plan view, and (B) is a side view.

Claims (1)

(57) [Scope of request for utility model registration] 1. A diaper main body having a liquid-permeable top sheet, a moisture-permeable leak-proof sheet, and an absorber located between the two sheets, and a side flap is provided on a back side of the diaper main body. In the disposable diaper, a non-moisture permeable target tape to which the tape fastener can be attached and detached is fixed with an adhesive on the surface of the leakproof sheet on the abdominal side of the diaper main body. The leakproof sheet is made by adding a filler to a thermoplastic resin.
Formed using a stretched, moisture-permeable, liquid-impermeable sheet
And which, from the above-mentioned target tape and the leak-proof sheet, the adhesive
Partially and their non-adhesive parts communicate with the outside air by the agent
A disposable diaper characterized in that it is adhered to the diaper.