JP2005312747A - Waterproof sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet which separates urine from the body of a user and avoids soiling of beddings, the garment and surrounding of the user by speedily absorbing the urine leaked out due to incontinence or night enuresis for solving the problem of a sheet to be spread on a mattress or a futon used by an elderly, a sick person, etc. who are incontinent and a bed-wetting child. <P>SOLUTION: Cloth using polyester textured yarn which has water permeability and water dispersibility and which feels excellent is used for a front cloth, and polyester cloth having waterproofness or moisture permeable and waterproof property is used for a rear cloth. The two clothes are superposed to make a matter where a part of the superposed clothes are opened and the surrounding of the other parts is closed. In addition, between the front cloth and the rear cloth, a sheet-like or a layer-like matter consisting of water-absorbing resin, cotton pulp, water-absorbable paper, etc. capable of speedily absorbing urine wetting them can be inserted or taken out. The whole of the sheet consists of the three of the front cloth, the sheet-like or layer-like absorbing resin and the rear cloth. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a waterproof sheet laid on an upper portion of a mattress and a bedclothes used by elderly people, sick people, etc. who have a risk of incontinence and children with nocturnal enuresis.

  Conventionally, waterproof sheets laid on top of mattresses and bedding mattresses used by elderly people, sick people, etc. who have incontinence, children with nocturnal enuresis, and rubber- or synthetic-resin laminated fabric or impervious layers by coating This is a sheet-like sheet that is integrated with the front and back sides, thereby preventing leakage of urine leaked during incontinence into the bedding under the sheets.

In general, the waterproof sheet is used in a situation where the user cannot leave the floor for some reason and is forced to urinate on the mattress or mattress. Normally, the user wears cloth or paper diapers in the urination section, but the urine is not completely absorbed by the diapers, and the leaked urine wets the user's clothes, It is said that stuffiness will cause discomfort to the user.
However, in the above conventional waterproof sheets, although the above-mentioned cloth is interposed between the user and the urine, the leaked urine collects on the sheet without being absorbed, and wets the user's clothes or causes stuffiness. It has the problem of giving the user discomfort. In addition, there is a problem that the collected urine is polluted by flowing out through the sheets. These problems are caused by the fact that the sheet itself does not have a structure for promptly absorbing leaked urine.

  The waterproof sheets are disclosed in JP-A-11-309183 and JP-A-9-238803.

  However, the method disclosed in Japanese Patent Application Laid-Open No. 11-309183 is performed between a water-permeable front-side fabric having water diffusibility and a water-repellent and water-impermeable and back-side fabric having air permeability. It stipulates that an inner cloth that has water absorbency and prevents backflow of absorbed water is disposed and sewn so that they do not separate. In addition, as the inner cloth, a non-woven cloth or a knitted cloth having a required thickness is used to absorb the water, and the inner cloth is not taken out.

Japanese Patent Laid-Open No. 9-238803 discloses a waterproof sheet made of synthetic resin or the like on the back of a warp knitted double raschel knitted fabric in which an insertion thread is inserted between a knitted fabric outer fabric and a lining fabric to form a ventilation layer having a predetermined thickness. Is affixed. However, although this method isolates urine from the user's body, urine remains on the waterproof sheet. As described above, in the conventional method, there is no product that can quickly absorb leaked urine, isolate the urine from the user's body, and can process the bedding, the clothes of the user, and the surroundings without soiling.
Japanese Patent Laid-Open No. 11-309183 JP-A-9-238803

  The present invention promptly removes urine leaked due to incontinence or night urine, in order to solve the problems of the mattress and sheets laid on the upper mattress used by the above-mentioned conventional elderly people, sick people, etc., and children with nocturnal urine. It is intended to provide a sheet that absorbs and isolates urine from the user's body, and does not contaminate the bedding, the user's clothes, or the surroundings.

  In order to achieve the above object, the waterproof sheet of the present invention uses a water-permeable and water-dispersible cloth for the front cloth, and a waterproof cloth or a water-permeable waterproof cloth for the backing cloth. A part of the overlapped and laminated fabric can be opened, and the surrounding area except for that part is closed. Furthermore, a polymer absorbent or cotton pulp that can quickly absorb leaked urine between the front and back fabrics. A sheet-like or layer-like sheet composed of water-absorbing paper or the like can be inserted, and is a function-separated type sheet composed entirely of a front cloth, a sheet-shaped or layer-shaped absorbent body, and a backing cloth.

  Further, the opening portion of the laminated fabric can be closed with a fastener or the like, and after use, after urine is absorbed by the inserted sheet-like or layer-like absorbent body, it can be taken out as appropriate, and another Can be exchanged for things.

  Further, by providing an auxiliary cloth on the two sides of the waterproof sheet, the waterproof sheet can be wound around a mattress or a mattress.

  The waterproof sheet of the present invention is composed of a front cloth, an absorbent body, and a back cloth, and each of the three materials has independent and different functionalities. Is processed. That is, the front cloth is located on the side closest to the user, and has a function of promptly infiltrating the leaked urine downward and separating it from the user. In addition, since this face cloth has a great influence on the feeling of sleep, it is necessary to have air permeability, good contact feeling with the skin, and appropriate stretchability that can adapt to body pressure and body movement. is there. At present, there are a wide variety of fibers on the market, but natural fibers have higher water absorbency than synthetic fibers, resulting in poor water permeability and dispersibility for moisture and time to dry. Cost.

  By the way, the official moisture content indicating the moisture content of the fibers is 8.5% for natural fibers, 15% for wool, and 11% for silk. Therefore, when these fibers are used for the outer cloth, a certain percentage of the leaked urine is absorbed by the fibers, resulting in a feeling of discomfort such as stickiness or sensation afterwards. On the other hand, polyester, which is one of the synthetic fibers, has an official moisture content of 0.4%, which is much smaller than the former, and shows how small the water absorption of polyester is.

  This indicates that if polyester fibers are used for the outer fabric, the water absorption of the fibers themselves and the amount of moisture adhering to the fibers are very small. Therefore, most of the moisture penetrates and penetrates the fabric. It is absorbed by an absorbent body such as a polymer absorbent body, cotton-like pulp, or water-absorbing paper that is inserted and disposed below. Next, in the polyester fiber, what type of yarn is used is good for the user, but the polyester long fiber yarn is subjected to false twisting or the like to give crimped yarn. The polyester-processed yarn fabric woven using the fabric was excellent in touch and the fabric had a good texture. Moreover, it was found that the sense of use is optimal in terms of air permeability, stretchability, wrinkle resistance and the like.

  Next, the absorbent placed between the front and back fabrics has the ability to quickly and reliably absorb the entire urine leaked from the user, and once absorbed, the urine will flow back to the outside. It is necessary not to come out. The average urine volume per adult is said to be about 100 to 150 cc. Among them, the amount of urine leaking out is assumed to be 10 to 100 cc at a time, except for the amount absorbed by paper diapers and the like. Moreover, assuming that the number of urinations at night is about 3, the total amount is 30 to 300 cc, and it is required that this urine volume can be sufficiently absorbed. As a material that can cope with this, when the amount of water absorption with respect to 1 g of the polymer absorbent body is 100 g, 3 g is sufficient to absorb the leaked amount of 300 cc of urine. The polymer absorbent has a high water absorption rate, and once absorbed, the polymer absorbent does not flow backwards even when body pressure is applied. In general, many polymer absorbers are in the form of a sheet in which a polymer water-absorbing polymer is mixed with cotton-like pulp, water-absorbing paper, or the like. Examples include Toyo Sanitary Co., Ltd., White Cross Co., Ltd., Unicharm Co., Ltd., and the like.

  Furthermore, the back fabric can be made from a synthetic resin coating or a waterproof film, or a high-density fabric with moisture permeability and waterproofness using polyester fine fiber yarns with fineness. Used. Thus, it has a function of preventing the accumulated urine from leaking downward from the backing cloth.

It consists of three sheets, a front cloth, an absorbent body, and a back cloth, and the functions of each of the three sheets are different from each other. As the front fabric, a woven fabric of 100% polyester processed yarn woven with polyester processed yarn is used for both warp and weft. The fineness of the yarn is approximately 33 dtex to 350 dtex, and the fabric density is suitably 50 to 250 yarns / 2.54 cm for both the warp yarn density and the weft yarn density. In the fabric in this range, the leaked urine can be permeated and permeated downward, and air permeability is ensured. Therefore, not only urine but also moisture caused by perspiration from the user can be moved through the fabric, which is effective in eliminating the feeling of stuffiness.
Furthermore, with regard to the texture of the fabric, the fabric with the polyester base yarn crimped by the user has a better contact feeling during use than the fabric using the polyester base yarn. In addition, by using the yarn obtained by this processing, it is finished into a woven fabric having a stretchability of 5% to 30% compared to the polyester yarn woven fabric, so that the table according to the body pressure and body shape of the user. Elastic deformation as a cloth is possible. Also, it is conceivable to use a mesh-like knitted fabric as the outer fabric. This is because the user's body pressure presses the stitches of the knitted fabric against the user's skin through the clothes. Can not get good touch feeling.

  Next, although it is an absorber, a polymer absorber, cotton-like pulp, water-absorbing paper, or the like that can quickly absorb leaked urine is used alone or in combination with them into a sheet-like or layer-like form having a thickness of 5 mm or less. What you did is appropriate.

  Further, as the backing fabric, a woven fabric woven with a polyester yarn which is a hydrophobic fiber for both the warp and weft is densely woven. Since this fabric has a high density of warp and weft crossings, the water vapor particles have a waterproof property while having a moisture-permeable property that allows them to pass outside the fabric. In the case of a fabric density that does not reach that level, the fabric may be subjected to water-repellent processing, synthetic resin film lamination processing, or rubber or synthetic resin coating processing to provide waterproof performance. The fineness of the yarn is approximately 33 dtex to 220 dtex, and the fabric density is suitably 50 to 250 yarns / 2.54 cm for both the warp yarn density and the weft yarn density.

  The functions of each of these three sheets work effectively, so that urine leaked from the user is absorbed quickly without accumulating on the waterproof sheets, and the bedding, the clothes of the user, and the surroundings are soiled. The best form without any discomfort to the user.

  Hereinafter, the present invention will be specifically described by way of examples.

"Example 1"
Polyester processed yarn woven fabric (warp 330 decitex, weft 330 decitex, warp density 62 / 2.54cm, weft density 56 / 2.54cm) is used for the outer fabric, and the absorbent is 60cm made by Unicharm Co., Ltd. × 90 cm, polyester fabric yarn (warp 110 decitex, weft 110 decitex, warp density 150 / 2.54 cm, weft density 81 / 2.54 cm) was used as the backing fabric. The two pieces of the front and back fabrics are overlapped, and a part of the laminated fabric can be opened. A waterproof sheet consisting of a front cloth, a sheet-like polymer absorber, and a back cloth was produced.

"Comparative Example 1"
Using this waterproof sheet, the amount of leaked urine was assumed to be 100 cc, and the same amount of water was dropped from the cup onto the top cloth in about 3 seconds.
Moisture after dripping penetrated the surface fabric almost without diffusing, and was quickly absorbed by the polymer absorbent sheet disposed thereunder. As a comparative product, a comparison result with a waterproof sheet in which a front cloth is a cotton pile and a vinyl chloride film is laminated on the back side is shown.

滴下５０分後の湿潤状態を示す感覚値
１ ぼとぼとする状態
２ ややぼとぼとする状態
３ べたつく状態
４ ややべたつく状態
５ さらっとした状態

Sensory value indicating wet state 50 minutes after dropping
1. A state that
2 Slightly disgusting state
3 Sticky state
4 Slightly sticky
5 Frozen state

"Comparative Example 2"
Similar to “Comparative Example 1” above, the same comparison was made assuming that the leaked urine volume was 10 cc. The results are shown below.

滴下３分後の湿潤状態を示す感覚値
１ ぼとぼとする状態
２ ややぼとぼとする状態
３ べたつく状態
４ ややべたつく状態
５ さらっとした状態

Sensory value indicating wet state 3 minutes after dropping
1. A state that
2 Slightly disgusting state
3 Sticky state
4 Slightly sticky
5 Frozen state

According to the present invention, as a waterproof sheet laid on a mattress or bedding mattress used by elderly people, sick people, etc. who have incontinence, or children with nocturnal enuresis, or a portable person such as an elderly person who is worried about incontinence It can also be used as a waterproof sheet for pets.

Claims (3)

  Using a cloth that is water permeable, breathable and water dispersible as a front cloth, a cloth having water impermeability by applying a waterproof process to the back cloth, or a high density woven fabric having moisture permeability and water resistance, respectively. A waterproof sheet having a sheet-like or layer-like structure that has water absorption between the backing fabric and can retain the absorbed water.   A sheet-like or layer-like material containing a polymer absorber or the like is inserted between the cloths separated from the front cloth and the back cloth, and can be taken out after water absorption. The waterproof sheet according to claim 1, which has a three-sheet structure of an absorbent body and a backing cloth. Use a woven fabric containing polyester-processed yarn that is water-permeable and water-dispersible and has excellent contact feeling.