JP2000296144A - Disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable diaper that is soft to users' skin and that can be easily processed after use by stirring it with water. SOLUTION: This diaper 5 is formed of a water-soluble outer-layer nonwoven web 1 and an inner-layer nonwoven web 2, and a highly water-absorptive polymer 3 is interposed between the outer-layer nonwoven web 1 and the inner-layer nonwoven web 2 and in a position opposite to the crotch so as to enhance water absorption at a urination part. After use, the diaper is stirred with water so that it can be processed as a suspension like the raw material of paper.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper suitable for nursing a bedridden elderly person or a physically handicapped person (hereinafter referred to as a physically handicapped person).

[0002]

2. Description of the Related Art In recent years, disposable diapers called disposable diapers have been widely used in place of cloth diapers such as yukata cloth. Many of these diapers are
The diaper main body is formed of a soft synthetic fiber non-woven web, and a non-woven web of cotton, rayon or the like having excellent water absorption is arranged in a crotch portion (urinating portion) to constitute a diaper. And in the diaper, the pants type to insert and wear from the toes,
There are an hourglass-shaped open type in which pants are divided on the side, and a rectangular sheet type that is used in combination with a diaper cover. These are arbitrarily used in consideration of convenience and economy.

[0003]

However, these conventional disposable diapers employ state-of-the-art materials, for example, a new non-woven web of synthetic fibers having excellent performance for diapers, and are designed, worn, and liquid. Functionality and ease of use, such as absorption, absorption, and liquid leakage prevention, are substantial with little room for improvement.However, as new fiber nonwoven webs have been adopted, There is a problem that the disposal method is troublesome. In other words, in the diapers including the nonwoven web of these new fibers, the disposal method after use has to depend on the incineration method. The burden is the actual situation.

[0004] The present invention can be easily disposed of by stirring with water without using an incineration method.
An object of the present invention is to provide a disposable diaper that is environmentally friendly and can absorb and hold a large amount of liquid (urine fluid).

[0005]

The present invention has solved the above-mentioned problems by forming the entire diaper with a water-soluble nonwoven web and disposing a superabsorbent polymer in the crotch portion. That is, the disposable diaper of the present invention is characterized in that the outer layer and the inner layer are both formed of a water-soluble nonwoven web, and a superabsorbent polymer is interposed between the layers of the nonwoven web at the crotch part. is there.

[0006] The term water-soluble nonwoven web as used herein does not mean that the nonwoven web is completely dissolved in water.
When the nonwoven web is placed in water and agitated, the original shape of the nonwoven web disappears and becomes a suspension like a raw material liquid for papermaking. It refers to a web, and the fibers constituting the nonwoven web include wood pulp fiber, water-swelled rayon, and PVA fiber. These fibers are used alone or in combination by wet papermaking. The diaper may be formed after forming the woven web. When it is necessary to adhere to the waist and thighs, a water-soluble paper string may be bonded or inserted so that the base of the diaper can be brought into close contact with the skin by fastening the paper string.

Examples of the superabsorbent material interposed between the outer nonwoven web and the inner nonwoven web at the crotch position of the diaper include commercially available superabsorbent polymers such as powdered polyethylene water absorbent polymer and acrylate polymer. The superabsorbent polymer is preferably contained in a rectangular bag formed of the above-described water-soluble nonwoven web in an appropriate amount to form a flat shape.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings showing the embodiments. FIG. 1 shows a basic configuration of the present invention, and 1 denotes an outer layer. The woven web, 2 is the inner nonwoven web, and 3 is the superabsorbent polymer, and contains the superabsorbent polymer 3 at a position facing the user's crotch between the outer nonwoven web 1 and the inner nonwoven web 2. A rectangular diaper 5 is provided in which a rectangular bag 4 is arranged and used by being wrapped with a diaper cover (not shown).

In the above embodiment, the outer nonwoven web 1
As the inner nonwoven web 2, a wet nonwoven fabric made of water-soluble rayon having a higher strength than that of the inner nonwoven web 2 was used. As the inner nonwoven web 2, a bulky and soft wet nonwoven fabric made of water soluble wood pulp fiber was used. Then, between the outer non-woven web 1 and the inner non-woven web 2 at the crotch position of the user, an amount of polyethylene water-absorbing polymer 3 capable of absorbing about 500 cc of urine is formed of a wet nonwoven fabric made of water-soluble wood pulp fiber. The back side of the bag 4 is adhered to the inner surface of the outer layer nonwoven web 2 with a water-soluble glue (starch paste), and the inner and outer nonwoven webs 1, 2 Is joined with a water-soluble glue in the periphery to form a diaper 5. FIG. 2
Shows an embodiment in which an hourglass-type diaper 5 is formed in the same configuration as described above.

FIG. 3 shows that a water-soluble paper cord 6, 6 is adhered to a portion corresponding to the waist when using the hourglass type diaper with a water-soluble glue so that the paper cord 6, 6 can be fastened to the waist when used. The water soluble paper cord 6
Is made mainly of rayon fiber or PVA fiber and has a strength enough to withstand pulling and fastening during use.

FIG. 4 shows that the wet nonwoven fabric made of water-soluble rayon is used as the outer nonwoven web 1 and the bulky soft flexible wet pipe made of water soluble wood pipe fiber is used as the inner nonwoven web 2 as in the above embodiment. A pants-type diaper is formed using a non-woven fabric, and at the waist and thighs, folded tubular portions 7 and 8 are formed. Water-soluble paper cords 6 and 6 are inserted through the tubular portions 7 and 8, respectively. An aspect is shown in which the waist and the thigh are fastened to prevent leakage of liquid from between the thigh and the diaper.

FIG. 5 shows slits 9 and 10 formed in the waist and thighs of the pants-type diaper so that both sides sandwiching the slit are overlapped with each other. Water-soluble sizing agents (starch sizing) 11 and 12 are applied to the surface side of the other inner layer web 2 and, when used, a release sheet (not shown) is applied to the surface of the water-soluble sizing agent (not shown). An aspect is shown in which both sides of the slit are overlapped by using a water-soluble glue that has been used to reduce the gap between the waist, the thigh, and the diaper.

[0013]

As described above, the disposable diaper of the present invention is
The outer layer and the inner layer are both formed by the water-soluble nonwoven webs 1 and 2, and the superabsorbent polymer 3 is interposed between the layers of the nonwoven webs 1 and 2 in the crotch portion. To play.

Since the entire diaper is water-soluble, when the used diaper is stirred with water by a stirrer, the original shape of the non-woven web of the outer layer and the inner layer disappears, and the suspension becomes like a raw material liquid for papermaking. It will be in a state where there is no problem even if it is flushed to the flush toilet. Therefore, if a stirrer is provided in place of the incineration equipment, the used diaper can be easily treated, and the treated suspension can be flushed to a flush toilet for disposal. Therefore, unlike the conventional incineration disposal method, there is no fear of causing pollution, and the diaper is environmentally friendly.

In addition, since the superabsorbent polymer 3 is interposed between the diapers, most of the urine water is effectively absorbed by the superabsorbent polymer 3, and the diaper can be used without getting wet widely. Does not cause discomfort to the person. Furthermore, the diaper of the present invention is gentle on the skin of the user and can be manufactured at low cost, so that the financial burden on the caregiver can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a basic embodiment of the present invention in a partially peeled state.

FIG. 2 is a perspective view showing another embodiment of the present invention in a partially peeled state.

FIG. 3 is a perspective view showing an embodiment of the diaper according to the present invention having a fastening string.

FIG. 4 is a perspective view showing an embodiment of a pants-type diaper.

FIG. 5 is a perspective view showing another embodiment of the pants-type diaper.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer nonwoven web 2 Inner nonwoven web 3 Superabsorbent polymer 4 Bag 5 Diaper

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[Procedure amendment]

[Submission Date] January 20, 2000 (2000.1.2
0)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0003

[Correction method] Change

[Correction contents]

[0003]

However, this synthetic fiber
Disposable diapers using non-woven webs have to rely on incineration methods as a method of disposal after use. For this reason, disposal of diapers after use is a heavy burden on local governments and hospitals. I was Therefore, the inconvenience of this incineration method is improved.
Japanese Patent Application Laid-Open No. 6-126901 (hereinafter referred to as the prior invention)
Gazette). The diaper disclosed in this prior publication is washed with water.
Water-disintegrable non-woven so that it can be washed and processed
Contains 1 to 10% by weight of a superabsorbent polymer between cloths
It is a bedridden elderly man who uses pulp fiber sheets
Diapers for people with physical disabilities, such as people with disabilities
As a skin-friendly diaper that can absorb a large amount of urine
It was still unsatisfactory.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004] Therefore, the present invention provides a bedridden elderly person or body that can be easily disposed of by stirring with water without being incinerated, is environmentally friendly, and can absorb and retain a large amount of liquid (urine fluid). The purpose of the present invention is to provide a disposable diaper suitable for persons with disabilities .

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

According to the present invention, an outer layer and an inner layer are provided.
Diapers formed by both water-soluble nonwoven waves
From water-soluble rayon as the outer nonwoven web
Water-soluble as the inner nonwoven web
For bulky and flexible wet nonwoven fabrics made of wood pulp fibers
Between the outer nonwoven web and the inner nonwoven web
Amount that can absorb 500cc of urine at the position where it touches the crotch
Water-soluble wood pulp fiber
Into a flat body inside a bag made of wet nonwoven fabric
It is characterized by the fact that it is arranged .

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

As the high-grade water-based material interposed between the outer nonwoven web and the inner nonwoven web at the crotch position of the diaper, commercially available superabsorbent polymers such as powdered polyethylene absorbent polymer and acrylate polymer are used. It is preferable to use these superabsorbent polymers in a flat shape in a rectangular bag formed of the water-soluble nonwoven web described above.
I do.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings showing the embodiments. FIG. 1 shows a basic configuration of the present invention, and 1 denotes an outer layer. Woven web, 2 for inner nonwoven web, and 3 for superabsorbent polymer
Is over, the user crotch to make contact position of between the outer layer nonwoven web 1 and the inner layer nonwoven web 2, arranged rectangular bag body 4 containing the superabsorbent polymer 3, the diaper cover (shown And a rectangular diaper 5 which is used by being wrapped by the diaper.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

[0013]

The disposable diaper of the present invention can be used after use.
Together and stirred with water by a stirrer Mutsu, become a suspension, such as the raw material solution for if it were paper disappears and the original form of the outer layer and the inner layer of the nonwoven web, such as there is no problem at all be flowed to quickly flush toilets State.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction contents]

[0014] Further , an inner nonwoven web which directly touches the body
Using bulky and flexible water-soluble wood pulp fiber
It fits the skin of the user gently and flexibly.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

[0015] In addition, 500cc at the crotch of the diaper
Superabsorbent polymer 3 is water-that can absorb a large amount of urine say
Stored flat in a bag made of soluble wood pulp fiber
Because it is interposed, it is not bulky, and most of the urine water is effectively absorbed by the superabsorbent polymer 3, and the diaper does not wet extensively and does not give a discomfort to the user. It is very useful as a diaper for bedridden elderly people and the physically handicapped who are unable to move their bodies, and can be manufactured at low cost to reduce the financial burden on the caregiver.

Continued on the front page F-term (reference) 3B029 BA12 BA18 BB06 BC07 BD09 BD12 BD21 4C098 AA09 CC14 CC27 CE05 CE06 DD10 4F100 AJ04 AJ06 AK01C AK04 AK21 AK25 BA03 BA06 BA10A BA10B DG06A DG06B GB72 JB09D JB09 JB09

Claims (1)

[Claims] 1. A disposable diaper, wherein the outer layer and the inner layer are both formed of a water-soluble nonwoven web, and a superabsorbent polymer is interposed between the layers of the nonwoven web at the crotch.