JPH0717304Y2 - Disposable diapers - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a disposable diaper used for infants, adults or incontinent persons.

[Conventional technology]

Conventionally, various disposable diapers have been proposed. The main disposable diaper among them includes a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorber located between these sheets, and a pair of left and right side flaps. It is a so-called flat type in which fasteners (tape fasteners) arranged on both side edges of the side waist portion are fastened in the abdominal region. Further, another type of flat type disposable diaper 1 shown in FIG. 4 has a top sheet 2, a back sheet 3, and a flat sheet as shown in FIG.
The absorbent body 4 and the side flaps 5 and 5 are provided, and the waist portions 5A on the back side of the side flaps 5 and 5 are respectively extended in the width direction to form extension portions so as to cover the body of the wearer. The tape fasteners 6, 6 arranged at the respective extending portions are configured to be fastened to the adhered area 8 formed on the waist portion 7 on the abdominal side. Further, elastic members 9 and 10 are provided on the leg portions 5B and the waist portion 7 of the side flaps 5 and 5, respectively, to improve the fit when worn (Japanese Patent Publication No. 52-40267).

In addition, recently, a so-called pants-type disposable diaper has been proposed in which the pair of leg holes and the waist hole are formed by joining and fixing both side edges of the ventral region and the dorsal region of the pair of left and right side flaps to each other. (Japanese Patent Laid-Open No. 61-207606). The pants-type disposable diaper has leg holes and waist holes formed so as to be expandable and contractable so as to fit the body shape. Such a pants-type disposable diaper can usually be worn by the wearer in a standing position, and is used for toilet training to keep the infant from "diaper separation" or for incontinence or walking. It is useful for adults. In addition, such a pants-type disposable diaper has a well-formed appearance of sewing and tailoring and is intended for disposable clothing.

[Problems to be solved by the device]

However, while conventional pants-type disposable diapers have a flexible fit for active activities of older children, their leg holes and waist holes are limited in size, and their legs can be easily passed through. However, there was a problem that it was more difficult to wear when the wearer fluttered his legs. In addition, the usual pants-type disposable diaper has a problem that it imposes an unreasonable posture on the wearer regardless of whether it is for infants or adults.

Further, the conventional pants-type disposable diaper cannot easily confirm the internal excrement during wearing, and in order to confirm it, it is unavoidable to rely on the wearer's intention to that effect.
Further, since the tape diaper does not include the tape fastener, there is a problem that when the used disposable diaper is discarded, it cannot be fixed in the closed state by using the tape fastener after rolling and sealing the inside.

Therefore, the object of the present invention is to make it possible to wear the device without forcing an uncomfortable posture when wearing it, and to easily wear it by fluttering the legs, and moreover, to be able to easily confirm the internal excretion. It is to provide a disposable diaper that can wrap waste and dispose of it.

[Means for Solving the Problems]

As a result of various studies on the structure of the pants-type disposable diaper, the present inventors have found that the above-mentioned object can be achieved by making the joints at the front and rear waist portions have a specific structure.

The present invention has been made based on the above findings, and in a disposable diaper including a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber located between these sheets, the waist portion Provided is a disposable diaper, characterized in that one of the left and right sides of each of the two is joined to each other to form a leg hole, the other is unjoined, and a joining means for forming a leg hole in the unjoined waist is provided. To do.

[Action]

According to the present invention, after one leg is passed through the leg hole formed by joining one side of the waist portion, the unjoined side portions of the other waist portion are simply joined to each other by joining means to be worn. Can be worn by the wearer.

〔Example〕

The present invention will be described below based on the embodiment shown in FIGS. In each drawing, FIG. 1 is a perspective view showing an embodiment of the disposable diaper of the present invention, and FIG. 2 is a partially cutaway front surface side of an intermediate product developed from the disposable diaper shown in FIG. FIG. 4 is a perspective view showing a state in which an infant wears the disposable diaper shown in FIG. 1, and FIG. 4 is a perspective view showing an example of a conventional flat type disposable diaper.

As shown in FIGS. 1 and 2, the disposable diaper 1 of this embodiment is located between a liquid-permeable topsheet 2, a liquid-impermeable backsheet 3, and both sheets 2 and 3. The absorbent body 4 is provided with a pair of left and right side flaps 5 and 5 extending outward in the width direction from both side edges in the longitudinal direction of the absorbent body 4.

As shown in FIGS. 1 and 2, the present disposable diaper 1 has one of the left and right sides of the waist 7, 7, that is, the pair of left and right side flaps 5, 5.
One of the front and rear waist portions 5A, 5C (on the left side), the side portions 5D, 5D are joined to each other by means of an adhesive, heat or ultrasonic welding, and the right leg is passed through.
11 are formed.

In addition, the other side (right side) of the waist portions 7, 7 is left unjoined, and the left leg is passed through the unjoined waist portions 7, 7, that is, the front and rear waist portions 5A, 5C of the right side flap 5. A joining means (tape fastener) 6 for forming the leg hole 11 is provided. Then, these unbonded right side portions are configured so that they can be bonded to and separated from each other by the tape fastener 6. That is, the front and rear waist portions 5A and 5C of the right side flap 5 are free ends, and the back waist portion 5A is formed to extend longer in the width direction than the abdominal waist portion 5C. There is. Then, a tape fastener 6 extending outwardly is arranged on a side portion of the extending portion 5E, and the tape fastener 6 is joined to the adhered area 8 formed on the back sheet 3 of the abdominal waist portion 7. Is configured to be able to. The tape fastener 6 has a strength such that it does not separate from the adhered area 8 when worn, and when pulled horizontally in a plane, the strength is at least 600 to 2000 per 1 inch width.
Gram, more preferably 1000 to 1600 grams. That is, in this disposable diaper 1, the front and rear waist portions 5A and 5C of the left side flap 5 are joined at the side portions 5D and 5D to form the leg hole 11 for the right leg, and the leg hole and waist for the left leg. The hole is open and one size fits all you need to do is pass your right leg through the leg hole 11 and then you can wear the tape fastener 6 in the attachment area 8 according to the size of the wearer. Is configured.

Elastic elastic members 12, 12 are arranged on the back waist portions 5A, 5A of the left and right side flaps 5, 5, respectively. It is preferable that the elastic stretchable members 12 and 12 are stretchable in the width direction around the waist when worn.

More specifically, the present disposable diaper 1 will be described in more detail. The absorbent body 4 in the intermediate product in which the disposable diaper 1 shown in FIG.
As shown in FIG. 2, the crotch region is formed into a checkered hourglass shape, and the top sheet 2 and the back sheet 3 are also curved in the crotch region according to the shape of the absorber 4. The left and right side flaps 5 and 5 are formed by extending portions in which the top sheet 2 and the back sheet 3 are overlapped in the width direction from both left and right end edges of the absorber 4 in the longitudinal direction. Then, in the crotch region of each of the pair of left and right side flaps 5, 5,
As shown in FIG. 2, elastic elastic members 9, 9 are bent and stretched between the sheets 3, 5, and both members 9, 9 expand and contract in a free state to form the leg gathers shown in FIG. And is adapted to fit the inseam area. still,
Two tape fasteners 6 may be attached as shown in FIG.

Thus, the topsheet 2 used in the disposable diaper 1 of the present embodiment is preferably a liquid-permeable sheet that allows liquid to permeate into the absorbent body 4 and has a feeling close to that of underwear. Such a liquid-permeable sheet For example, woven cloth, non-woven cloth, porous film, etc. are preferable. In addition, by applying a hydrophobic compound such as a silicone oil or paraffin wax to the periphery of the top sheet 2 or by applying a hydrophilic compound such as an alkyl phosphate ester in advance and washing the periphery with warm water, By applying water treatment, it is possible to prevent leakage due to bleeding of urine or the like around the periphery.

In addition, the backsheet 3 used in the disposable diaper 1 of the present example was stretched by adding a filler to a thermoplastic resin,
A liquid-impermeable sheet having vapor permeability that allows vapor to pass through is preferable, and a sheet having a feel similar to that of underwear is more preferable.

Further, the absorbent body 4 used in the disposable diaper 1 of the present embodiment is preferably one in which a high molecular weight water-absorbing polymer mainly composed of defibrated pulp is used in combination, and a mixture of a thermoplastic resin, a cellulose fiber and a high molecular weight water-absorbing polymer. Those that have been heat treated are preferred. It may be an upper layer, a middle layer or a lower layer at the position where the high-molecular water-absorbing polymer exists, or may be a mixture with pulp. Further, the high-molecular water-absorbing polymer has a retention performance capable of absorbing and retaining a liquid 20 times or more of its own weight, and is preferably in the form of particles having a gelling property,
Examples of such high-molecular water-absorbing polymer include starch-acrylic acid (salt) graft copolymer, starch-
Saponified products of acrylonitrile copolymer, crosslinked products of sodium carboxymethyl cellulose, acrylic acid (salt) polymers and the like are preferable.

The elastic stretchable member 9 used in the disposable diaper 1 of the present embodiment is preferably a thread rubber, a flat rubber, or a film type rubber, and preferably has a stress at 70% elongation of 70 to 100 g. Is preferably a non-woven fabric type having elasticity and breathability.

Since the present disposable diaper 1 has the above-described structure, when wearing it, first, as shown in FIG. 3, after passing the right leg of the infant through the leg hole 11, the front and rear waist portions of the other side flap 5 are inserted. It can be worn by pulling 5A and 5C together and overlapping them around the waist, and then joining the tape fastener 6 to the attachment area 8 (not shown in FIG. 3) of the back sheet 3 on the ventral side.

Therefore, according to the disposable diaper 1 of the present embodiment, it is possible to wear the disposable diaper 1 by simply joining the waist portions 5A and 5C with the tape fastener 6 after the right leg is passed through the leg hole 11. Therefore, it is possible to easily wear the wearer without imposing an unreasonable posture, and even when the wearer moves violently by fluttering the foot, as long as the right foot is passed, Can be easily worn. Further, the inside of the present disposable diaper 1 can be easily confirmed by removing the tape fastener 6, and if the used diaper 1 is rolled up and the inside is closed and then fixed by the tape fastener 6, it can be used as it is. Can be discarded.

The disposable diaper according to the present invention, as shown in FIG.
The waist portions 7 and 7 can be stretched with elastic stretchable members 10 and 10 to enhance the fit of the waist portions 7 and 7 and effectively prevent leakage at the waist portions. In this case, the elastic stretchable member 10 is preferably the same as the elastic stretchable member 9 forming the leg gathers.

The disposable diaper of the present invention is a joining means capable of joining either one of the left and right sides of the waist portion to each other to form a leg hole and the other portion unjoined to form a leg hole in the unjoined waist portion. The present invention is not limited to the above embodiment as long as it is provided with.

[Effect of device]

In the disposable diaper of the present invention, one of the left and right sides of the waist portion is joined to each other to form a leg hole,
Since the other is unjoined and a joining means that can form a leg hole is provided in the unjoined waist, it is easy to wear even if you flutter your legs without forcing an uncomfortable posture when wearing it. In addition, the excretion inside can be easily confirmed, and the excrement can be wrapped and discarded.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the disposable diaper of the present invention, and FIG. 2 is a plan view showing a partially broken surface side of an intermediate product developed from the disposable diaper shown in FIG. 1, FIG. Is a perspective view showing a state in which an infant wears the disposable diaper shown in FIG. 1, and FIG. 4 is a perspective view showing an example of a conventional flat type disposable diaper. 1; Disposable diaper, 2; Topsheet 3, Backsheet, 4; Absorber 5; Side flap 6; Tape fastener (joint) 7; Waist section 9, 10, 12; Elastic stretchable member

Claims (3)

[Scope of utility model registration request] 1. A disposable diaper comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body located between these sheets, wherein either one of the left and right sides of the waist portion is provided. A disposable diaper, characterized in that it is joined to each other to form leg holes, the other is not joined, and a joining means capable of forming leg holes in the unjoined waist is provided. 2. The disposable diaper according to claim 1, wherein elastic elastic members are provided on both left and right side portions of at least one of the front and rear waist portions. 3. The disposable diaper according to claim 1, wherein elastic stretchable members for waist gathers are arranged in front of and behind the waist portion.