JPH10165432A - Water absorbent sheet with water absorbent pocket storing absorbent polymer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable to obtain a thin absorbent product with high absorbent effect for urine and comfortable wear feeling, forming a water absorbent pocket storing an absorbent polymer by alternatively piling up a water permeable sheet and water absorbent polymer and quilting them together and sealing the periphery after cutting. SOLUTION: An absorbent polymer is uniformly placed on a water permeable sheet and desired number of water permeable sheets and absorbent polymer are piled up to form this water absorbent sheet 1. Next, the water absorbent sheet 1 is quilted at proper intervals to form a number of pockets 4 storing absorbent polymer. Finally the sheet is cut into a desired size of almost rectangular shape and the periphery 1a is sealed by heat treatment, etc., to form water absorbent sheet 1 storing absorbent polymer. Thus a water absorbent sheet can be formed thinner since absorbent polymer is uniformly placed in the water absorptive pocket partitioned small by sewing, and, for instance, wearing of a paper diaper becomes comfortable and a diaper can be used in feeling of ordinary underwear.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water absorbing sheet using a polymer absorbent.

[0002]

2. Description of the Related Art When diapers are used by infants, sick people, bedridden elderly people, etc., a cloth-shaped diaper is applied to a diaper cover, or a paper diaper made of cotton or paper is worn.

[0003] On the other hand, diapers and sanitary napkins having high water absorption utilizing a polymer absorbent such as a water-absorbing polymer are currently dominant.

In addition, a diaper integrally formed with a waste storage bag for storing stool during excretion is used. (Japanese Patent Application No. 8
-163580 "Diaper for defecation care") The diaper plays a role not only in stool but also in absorbing urine, and is mainly formed with a bag for storing stool under the diaper so as not to directly touch the skin. Can also be used,
Manufactured to withstand prolonged use.

[0005]

A conventional cloth diaper has a limit in absorbing urine, and may cause urine leakage.

Although a disposable diaper using a polymer absorbent is excellent in urine absorption, it is formed in a state in which the polymer absorbent is scattered between paper and cotton, etc. And cotton are required, and the diaper itself becomes thicker. Therefore, it is uncomfortable, wrinkles due to prolonged wearing or heavy movement, or the polymer absorber is offset and urine is not absorbed uniformly, causing bedsores and urine leakage, causing mental and physical disorders to the sick. Give pain.

Furthermore, if the polymer absorber absorbs moisture and expands in a state where the polymer absorber is sealed in one place, the polymer absorber that has lost its escape place will expand and cut out before sufficient urine absorption. In addition, the urine absorbing ability of the polymer absorber cannot be fully exhibited.

[0008] Japanese Patent Application No. 8-163580 "Diapers for nursing care of defecation" is originally manufactured to be used for a long period of time. In this case, the diaper user may not want to continue using the diaper. If this is the case, the entire diaper must be replaced while almost unused, which is uneconomical.

Therefore, in the present invention, a water-absorbing sheet having a water-absorbing pocket filled with a polymer absorbent is formed, and this is processed into a diaper, a sanitary napkin or a stool sheet to absorb urine and the like. The aim is to provide products that are thin, comfortable and comfortable to wear.

In addition, a notch is cut into the surface of the water-absorbing sheet to enhance the urine absorption effect, allow the polymer absorber to expand sufficiently, and furthermore, a polymer absorber overflowing from the cut is formed at that location. The purpose is to achieve 100% absorption capacity.

[0011]

Each gap of the laminated sheet having water permeability is filled with a polymer absorbent, quilted to a suitable size, and provided with a water absorbing pocket containing the polymer absorbent. Forms a water-absorbing sheet.

The water-absorbing sheet is formed into a sheet by combining it with a water-permeable sheet and / or a waterproof sheet, then cut into a desired size and shape, and then sealed around by heat treatment or the like. It is formed into disposable diapers, sanitary napkins, stool sheets and the like.

[0013]

FIG. 1 is a front view of a water-absorbing sheet 1 according to the present invention, and FIG.

As shown in FIG. 2, a water passage having water permeability is provided.
The polymer absorber 3 is evenly spread on the sheet 2, and thereafter, the desired number of water-permeable sheets 2 and the polymer absorber 3 are similarly stacked to form the water-absorbing sheet 1.

[0015] The polymer absorber has the characteristic that it swells by absorbing about 500 to 1000 times its volume of water. The average daily urine output of the sick is 1500cc
Considering that it is about 2000 cc, it is considered that about 3 cc to 5 cc is sufficient for the amount of the polymer absorbent used for one sheet of water absorbing sheet.

Next, FIG.
As shown in (1), quilting is performed to provide a large number of pockets 4 containing a polymer absorbent.

Finally, it is cut into a substantially rectangular shape of a desired size,
The peripheral edge 1a is sealed by heat treatment or the like to form the water-absorbing sheet 1 with the pocket containing the polymer absorbent according to the first aspect.

FIGS. 3 and 4 are front views showing an embodiment of the present invention.

As described above, a linear cut 5 is formed on one side 1b of the water-absorbing sheet in which the water-permeable sheet 2 and the polymer absorber 3 are alternately stacked and stacked in FIG. After a plurality of wavy cuts 6 are made, quilting is similarly performed.

By making a cut in each water absorbing pocket 4, urine infiltrated from the cut 5 or 6 is directly absorbed by the polymer absorber 3 in the water absorbing pocket 4, so that urine can be efficiently absorbed.

FIG. 5 shows that the desired number of small holes 7 are formed in the water-absorbing sheet 1 having the pocket 4 containing the polymer absorber in place of the cut 6 shown in FIG. Things. The small holes may be left open, but the holes can be closed with a water-soluble glue or the like to prevent the polymer absorber from being lost. When urine or the like infiltrates the hole closed by the water-soluble glue, the glue dissolves and opens, and the polymer absorber uniformly spills out from the small hole.

FIG. 6 shows a structure in which a release sheet 8 is adhered to one side 1b of the water-absorbing sheet 1 having the pocket 4 containing the polymer absorber to prevent the loss of the polymer absorber 3 in the pocket. It is explanatory drawing of an Example. In use, the peeling sheet 8 is peeled off and used.

FIG. 7 is an explanatory view showing a cross section of a water-absorbing sheet with a pocket containing a polymer absorbent according to the fourth aspect.

The water-permeable sheet 2 having water permeability is bent and folded so as to form a pleat as shown in FIG. 7 and the polymer absorber 3 is filled in the pockets 4 formed on the front and back surfaces. ,
The gap 4a of the pocket is sealed with a water-soluble adhesive 9.

The present invention has a simple structure and requires only one water-permeable sheet, so that it can be formed even thinner. The space formed by folding is used as a pocket for filling a polymer absorbent. This eliminates the need for finely sewn to form a pocket.

The water-soluble adhesive 9 dissolves as urine or the like infiltrates, the opening 4a of each pocket 4 is opened, and urine is directly absorbed by the polymer absorber 3 in the pocket 4, thereby increasing the efficiency. It can absorb urine.

FIG. 8 is a schematic sectional view showing the structure of a disposable diaper or sanitary napkin using the water-absorbing sheet according to the present invention.

A waterproof sheet 11 is placed on the bottom surface 1b of the water-absorbing sheet 1 according to the first embodiment, and further, for example, between the water-permeable sheet 2 serving as a contact surface with the skin and the polymer absorber 3. The high-density absorbers 10 such as tissue paper are superimposed and sewn in a lattice form to perform quilting, thereby forming the pockets 4 containing the polymer absorbers.

It takes some time for urine and the like to pass through the water passage sheet and to be absorbed by the polymer absorbent, and there is a possibility that urine and the like may return, but the tissue paper 10 is used to absorb water. The tissue paper absorbs urine which has returned to the water-permeable sheet 2 and is absorbed by the polymer absorber 3 by being placed on the tissue sheet, so that the contact surface with the skin is exposed. The comfort is comfortable.

The waterproof sheet 11 is adhered to a diaper cover or underwear or the like to prevent dislocation of the disposable diaper or sanitary napkin at two places, and is covered with a seal cover 13. In use, the seal cover 13 is peeled off when worn, and the adhesive tape 12 is attached to a diaper cover or underwear, and a paper diaper or a sanitary napkin is used.

A diaper or the like using a water-absorbing sheet having a cut in the surface as described in claim 2 not only enhances the absorbing effect by directly absorbing urine and the like from the cut, but also cuts the cut on one side (a cut on one side). It is desirable that the surface is provided on the waterproof sheet side when cutting into.), Or by providing on both surfaces, it expands with moisture absorption and spreads out from the cut of the pocket, and furthermore, it cannot be accommodated in the pocket. The polymer absorber overflowing from the cut is a water-absorbing sheet 1 and a water-permeable sheet 2
Alternatively, it spills between the waterproof sheet 10 or both, and obtains sufficient space to expand at the location, and further continues urine absorption.

The sanitary napkin 14 shown in FIG.
The peripheral edge 14a is cut into a substantially elliptical shape along the local area.
Is sealed by heat treatment or the like.

FIG. 10 shows a disposable diaper 15 formed by cutting into a shape slightly larger than the sanitary napkin 14 shown in FIG.
It is explanatory drawing which shows a mode that it sticks on the diaper cover 16 at the time of use and uses it.

A waterproof sheet 18 is attached to the back surface 15a,
The attachment of the adhesive tape 17 to the diaper cover 16 to the desired location on the sheet is as described above.

FIG. 11b is a perspective view of the "diaper for defecation care" 19 of Japanese Patent Application No. 8-163580, and FIG. 11a is a perspective view of the diaper having a stool storage bag 19a.
It is a perspective view of the sheet 20 for exclusive use of Claim 5 formed in order to use effectively. This stool sheet 20 does not have a waterproof sheet attached, and the outer sheet 20 of the stool sheet 20 is not provided.
By attaching an adhesive tape 21 which can be freely attached to and detached from the diaper 19 to a desired position, the tape 21 is used by being adhered to the diaper 19 for defecation care. When the stool sheet 20 becomes dirty, only the sheet concerned is replaced. The diaper 19 for defecation care can be used for a long time.

The stool sheet 20 is cut three-dimensionally as shown in the figure, so that it is easy to wear, and along the body, the base portions 20c of the two legs are freely expandable and contracted, and the tip portion 20b is for excrement of feces. Is formed so as to protrude forward so as to conform to the shape of the stool storage bag 19a of the diaper 19 for defecation care in order to perform the operation smoothly.

[0037]

As described above, the polymer absorbent is uniformly arranged in the water-absorbing pockets finely divided by suturing, so that the water-absorbing sheet can be formed thin. By reducing the thickness of the water-absorbing sheet, the diaper can be worn comfortably, the diaper can be used with a normal underwear feeling, and the mental and physical distress of the user can be greatly reduced. In addition, by providing fine partitions, the polymer absorber is uniformly arranged, and it is possible to prevent urine from evenly absorbing from the entire surface of the water-absorbing sheet in order to prevent the polymer absorbent from being remarkably shifted to one place, thereby preventing urine leakage. 2. The water-permeable sheet is bent and folded to provide a pocket for filling the polymer absorber, thereby forming a thinner water-absorbing sheet without laminating the water-permeable sheet and the polymer absorber. The water-absorbing sheet has a simple structure and requires a small amount of material, so that it can be produced at low cost. 3. By making a cut on the surface of the water-absorbing sheet, urine can be efficiently absorbed by the polymer absorber and the polymer absorber can be effectively used, so that there is no waste. That is, if there is no cut, the polymer absorber can only expand within the enclosed narrow space, and the water-absorbing pocket is filled before the polymer absorber expands 100%. This is because the polymer absorber that spreads out of the pocket and spills out of the pocket obtains a sufficient space between the water-absorbing sheet and the waterproof sheet and continues to expand further. 4. By piercing a plurality of small holes on the surface of the water-absorbing sheet, which are easy to process, the same effect as that obtained by making a cut on the surface can be obtained. 5. Various sizes and shapes of products can be easily produced by the method of suturing or cutting the water-absorbing sheet. 6. By using a durable paper diaper or the like and a convenient and inexpensive absorbent or urine absorbing sheet, the sheet can be frequently replaced, and a clean and comfortable diaper can always be used. .

[Brief description of the drawings]

FIG. 1 is a front view of a water-absorbing sheet according to claim 1.

FIG. 2 is an explanatory diagram showing a cross section.

FIG. 3 is a front view of the water-absorbing sheet according to claim 2;

FIG. 4 is a front view showing another embodiment of the present invention.

FIG. 5 is a front view of the water-absorbing sheet according to claim 3;

FIG. 6 is a front view showing a state where a release sheet is attached to the water-absorbing sheet according to claim 2;

FIG. 7 is an explanatory view showing a cross section of the water-absorbing sheet according to claim 4.

FIG. 8 is an explanatory view showing a structure of a disposable diaper or the like using the water-absorbing sheet according to claim 1.

FIG. 9 is a front view of a sanitary napkin using the water-absorbing sheet according to claim 1.

FIG. 10 is an explanatory view showing a use state of the diaper using the water-absorbing sheet according to claim 1.

FIG. 11: "Diaper for defecation care" having a stool storage bag
A perspective view of the stool sheet according to claim 4 formed exclusively.
b Perspective view of a “defecation care diaper” having a stool storage bag.

[Explanation of symbols]

1, water absorption sheet 2, water passage sheet 3, polymer absorber 4, water absorption pocket containing polymer absorber 5, 6,
Cut 9, tissue paper 10, 17, waterproof sheet 14, paper diaper 18, diaper 18a for defecation care, stool storage bag 19, stool sheet

[Procedure amendment]

[Submission date] December 24, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 5

[Correction method] Change

[Correction contents]

Claims (5)

[Claims] 1. A desired number of sheets having water permeability and a polymer absorbent are alternately overlapped and quilted to provide a water-absorbing pocket containing the polymer absorbent. A water-absorbing sheet with a water-absorbing pocket containing a polymer absorbent body. 2. A desired number of water-permeable sheets and polymer absorbents are alternately overlapped and quilted to provide water-absorbing pockets containing the polymer absorbents. Water-absorbing sheet with a water-absorbing pocket containing a polymer absorbent body, cut to the size and shape of
G. 3. A desired number of water-permeable sheets and polymer absorbents are alternately overlapped and quilted to provide water absorbing pockets containing the polymer absorbents, and a desired number of holes are formed in the surface of each pocket. A water-absorbing sheet with a water-absorbing pocket containing a polymer absorber, which is cut into a desired size and shape after installation, and the periphery is sealed. 4. A gap formed by folding a sheet having water permeability into a pleated shape is filled with a polymer absorber and sewn to provide a water absorbing pocket containing the polymer absorber, and cut into a desired shape. A water-absorbing sheet with a water-absorbing pocket containing a polymer absorbent body whose peripheral edge is sealed. 5. A desired number of water-permeable sheets and polymer absorbents are alternately overlapped and quilted to provide a water-absorbing pocket containing the polymer absorbents, and cut into a desired size and shape to form a peripheral edge. A water-absorbing pocket-containing stool sheet containing a polymer absorbent body.