JPH0773903B2 - Body excrement supplies - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a body excrement article.
It is something. More specifically, the present invention shows that one side of the film is impermeable to water, and the other side of the film is soluble or dispersible in water at a temperature of about 40 ° C. or lower, so that the entire film is soluble in water. Or disperse
It relates to a body excrement article .

[0002]

2. Description of the Related Art Conventionally , materials having both water-soluble and water-impermeable properties have been proposed. That is,
For example, JP-A-50-113556 describes a composition comprising a partially hydrolyzed polyvinyl alcohol, a plasticizer and a metal borate, which is insoluble in a small amount of water and soluble in a large amount of water. . However, in this case
Is, there is a problem that it is very difficult to reserving a large amount of water or body fluid or the like.

Further , in JP-A-56-500037 , a modified hydroxypropyl cellulose which is soluble in water at a temperature of about 16 ° C. or lower but is insoluble in water at a temperature of 16 ° C. or higher is used and can be discarded in a toilet. A possible toilet bag is described. However, the toilet water temperature is varied depending on the season, especially for greater than or equal to 16 ℃ in the summer, not the city that can not be passed through the bag to the bathroom
There is a match.

Further, Japanese Patent Application Laid-Open No. 63-181758 describes a pouch for an artificial anus capable of being dumped in running water. However, in this ostomy pouch, since one layer of the laminate is made from tissue paper having a hot water solubility and water resistance, the toilet water solubility, not dispersed,
Even if it is possible to discard running water, in reality
The dumping will affect the function of the toilet .

[0005]

Water solubility and water impermeability
Even if materials such as films with such contradictory functions are
Medical care as toilet bag and colostomy pouch as above
For use in body excrement products that are important for daily life or
However, in the conventional technology,
One side can also indicate impermeable to large amounts of water, briefly material is still not as dispersed or dissolved in water when in contact with the water from one side, not been also commercialized real
It is emotion .

The present invention has been made in view of such circumstances.
Are as hereinbefore, one side of the film shows a water-insoluble long time, and when the water from the other side of the film has infiltrated the entire film is readily dissolved or dispersed in water in a short time, a new bodily discharges Intended to provide supplies .

[0007]

Means for Solving the Problems The inventors of the present invention have conducted extensive studies to achieve the above-mentioned objects, and as a result, a thin film of polyvinyl alcohol having a low saponification degree is formed on one surface of a film made of water-soluble polyvinyl alcohol. The present invention has been found to increase the water impermeability of one surface of a film by laminating layers by coating or laminating, and to dissolve or disperse in water in a short time when the film is immersed in water, and thus reached the present invention. It was done.

That is, according to the present invention, the saponification degree is 70 to 98.
Body made of polyvinyl alcohol film in which a polyvinyl alcohol layer having a saponification degree of 0 to 30 mol% is laminated on one surface of a film made of polyvinyl alcohol of mol%
It is a waste product and has a water impermeable saponification degree of 0 to 30
% Polyvinyl alcohol layer surrounds body exudates,
Polyvinyl alcohol film with a saponification degree of 70-98%
When the water is infiltrated in water, the whole is immediately dissolved or separated in water.
The gist is a body excrement article characterized by being scattered .

The present invention will be described in detail below. Generally, polyvinyl alcohol means polyvinyl alcohol or its derivative. Polyvinyl alcohol can be produced by a known method such as hydrolysis of polyvinyl acetate obtained by polymerizing vinyl acetate, that is, deacetic acid production. In this step, the degree of hydrolysis is called the degree of saponification, and is an amount that represents how much deacetic acid is contained in the monomer unit of polyvinyl alcohol. A degree of saponification of 100 mol% means that all the acetic acid ester residues of polyvinyl acetate are hydrolyzed to hydroxyl groups. A polyvinyl alcohol having a degree of saponification of 95 mol% means that the monomer unit of polyvinyl acetate has 95% hydroxyl groups. Is replaced with.

The polyvinyl alcohol used as the base material of the film of the present invention has a saponification degree of 70 to 98 mol%, and is dissolved, swelled or dispersed in water at about 40 ° C. or lower. The polyvinyl alcohol laminated on this substrate has a saponification degree of 0 to 30 mol% and is insoluble in water at room temperature. It is water impermeable . There is no limitation on the molecular weight of these polyvinyl alcohols, that is, the degree of polymerization. For example, polyvinyl alcohols having a low degree of polymerization and a high degree of polymerization can be blended and used.

Further, it may be a binary, ternary or quaternary copolymer containing a monomer capable of copolymerizing with vinyl acetate as a monomer of polyvinyl alcohol. Examples of the copolymerizable monomer component include monomers having a double bond in the molecule. Examples include methyl vinyl ether, styrene, vinyl chloride, allyl alcohol, acrylic acid and its esters, acrylonitrile, vinylpyrrolidone, chloroprene, butadiene, isoprene, ethylene and propylene.

The saponification degree used in the present invention is 70 to 98 mol.
Le% of polyvinyl alcohol is no match also contain gelling agents of the polyvinyl alcohol to increase its film strength. The polyvinyl alcohol gelation accelerator refers to salts having a coagulating effect on polyvinyl alcohol, substances capable of chemically binding polyvinyl alcohol and diol type, and the like. The salts preferably used in this case include sodium sulfate, magnesium sulfate, aluminum sulfate, ammonium sulfate, potassium sulfate and other sulfates, sodium nitrate, ammonium nitrate, aluminum nitrate and other nitrates, sodium phosphate and other phosphates, and chromic acid. Chromates such as potassium are included. In addition, examples of the substance capable of chemically bonding with polyvinyl alcohol and the above diol type include compounds such as boric acid, borate, borax, copper, aluminum, titanium, zirconium, tin and vanadium.

The proportion of these gelling promoters mixed in polyvinyl alcohol varies depending on the gelling ability of each gelling promoter, but is 30 mol% or less, preferably about 30 mol% with respect to the vinyl alcohol unit of polyvinyl alcohol. It is preferably 20 mol% or less. Gelling agent concentration is 30
If it exceeds mol%, the water solubility of the film cannot be sufficiently obtained and the desired film performance cannot be obtained.

In order to improve the flexibility of the film, a plasticizer may be added to the extent that the performance of the film is not impaired. Examples of the plasticizer include ethylene glycol, trimethylene glycol, tetramethylene glycol, pentamethylene glycol, hexamethylene glycol, propylene glycol, glycerin, 2,3-butanediol, 1,3-butanediol, diethylene glycol, triethylene glycol. , Dibutyl phthalate, dioctyl phthalate and the like.

For example, it becomes the base material of the present invention as described above.
The water-soluble polyvinyl alcohol film having a saponification degree of 70 to 98 mol% can be produced by various methods. For example, polyvinyl alcohol can be produced by dissolving, swelling or dispersing it in water at an appropriate temperature by a known method, and then performing the steps of defoaming, casting and drying. A heat treatment step may be added to increase film strength . And the thickness of the film is not particularly limited . However, usually , a thickness of 25 to 250 μm is preferably used.

[0016] or more on one side of a water-soluble polyvinyl alcohol film as a film substrate of the present invention, the present invention
To realize bodily discharges supplies, low saponification degree of the polyvinyl alcohol is more laminated to a known method or the like. Saponification degree
Product of polyvinyl alcohol having a low saponification degree of 0 to 30 mol%
The layer is realized by coating the solution on a water-soluble polyvinyl alcohol film . In that case,
As a solvent of polyvinyl alcohol having a low saponification degree, water,
Methanol, ethanol, methyl acetate, ethyl acetate, bityl acetate, amyl acetate, benzene, toluene, acetone, methyl ethyl ketone, trichloroethylene, etc. can be used. Further, it is also possible to heat-melt and coat polyvinyl alcohol having a low saponification degree. The thickness of the coating layer is usually preferably about 0.1 to 5 μm, and if it is less than this, sufficient water impermeability cannot be obtained. It will be adversely affected. It
Moreover, polyvinyl alcohol having a low saponification degree may be laminated by laminating , and in this case , a film produced by casting a polyvinyl alcohol solution having a low saponification degree and drying in the same manner as the base film. Can be laminated.

In order to color the polyvinyl alcohol layer, a coloring agent or dye may be added to the extent that the performance and strength of the film are not impaired. For example, these colorants
As a dye, benzopurpurin 4BKX (Benzopurpur
ine 4BKX), Nippon Orange GC (Nippon Orang)
e GC), chrysophenine NS (chrysophenine NS)
, Direct Sky Blue 5B
B), Nippon First Violet BB (Nippon Fa
st Violet BB), Direct Brown M (Direct Brown)
M), Nippon Deep Black Extra (Nippon
Deep Black Extra), Sulfur Indigo R (Sulfur)
Indigo R) Sulfur Black BC
BC), Mikethrene Blue R
S), Naphtol AS, Fast Scarlet G Base, Roselin NS (Rocceline NS), Acid Brilliant Scarlet 3R, Chrome Green F, Chrome Black F. AC (Chr
ome Black AC), Rhodamine B (Rhodamine B), Celliton Fast Pink F3
B), Celliton Fast Blue FFR (Celliton Fast
Blue FFR) and the like.

In order to further enhance the water resistance of the polyvinyl alcohol layer having a low saponification degree, a water repellent agent may be applied after laminating polyvinyl alcohol having a low saponification degree . Typical examples of the water repellent include paraffin, aluminum stearate, zirconium stearate, a silicone resin or methylhydropolysiloxane as a main component, and a reactive silicone compound or pyridinium salt type cationic interface which is reticulated by a catalyst. Activator, methylol stearamide, a long-chain saturated hydrocarbon compound having reactivity such as octadecyl ethylene urea, further, a compound containing acrylic acid polyfluoroalkyl ester having a perfluoroalkyl group as a side chain as a constituent unit, Examples thereof include compounds containing fluorine in the main chain. In particular, a water repellent containing a compound having a perfluoroalkyl group having a property of repelling water and oil is preferably used.
Other water repellents may be used depending on the application. Further, there is no limitation on the coating amount of the water repellent and the heat treatment method after coating. These water repellents are water-repellent compounds emulsified in water with a small amount of a surfactant,
Alternatively, what is dispersed and dissolved in a solvent may be applied to the surface of the polyvinyl alcohol film by a known method, and dried and heat-treated according to the use.

The body excrement article of the present invention is as described above.
Higher saponification degree 70-98%, more water-soluble
Of polyvinyl alcohol film and laminated on it
Water impermeable saponification degree 0-30 mol% polyvinyl alcohol
It consists of a laminated film consisting of a call layer.
The hydrated body exudates the water-impermeable porosity of the latter.
The present invention is surrounded by a layer of vinyl alcohol and
If the items of the above are discarded in the toilet, etc.
The polyvinyl alcohol film is soaked in water,
Entirely disintegrates and dissolves or disperses in water
become. The body excrement article of the present invention having such characteristics
More specifically, ostomy bags, wound dressings,
It can be applied to bandages, diapers, urine collection bags, portable urine collections, etc.

[0020]

【Example】

Hereinafter, the present invention will be described in more detail based on examples. Since
In the examples below, the polyvinyl alcohol laminate film of the present invention is used.
Film, and its performance as a body excrement article,
The effect on water is evaluated together with the comparative example. Example 1 Water-soluble polyvinyl alcohol UF-170M (manufactured by Unitika Ltd. , saponification degree: 95.5 to 97.5 mol%) 15
g was taken in a beaker, 85 ml of distilled water was added to swell, and then dissolved in an oil bath at 90 ° C. under strong stirring. After removing air bubbles in the solution, a polyvinyl alcohol solution was cast on a polyethylene terephthalate film and air-dried at room temperature overnight. The obtained film was designated as A film. Next, polyvinyl alcohol UMR-30L with low saponification degree
30 g (manufactured by Unitika Ltd. , saponification degree: 0 mol%) was placed in a beaker, 70 ml of methanol was added, and the mixture was dissolved in a water bath at 50 ° C. under stirring. A 20 cm square A film was uniformly coated with about 2 ml of a polyvinyl alcohol solution having a low saponification degree using a coating rod, and then dried at room temperature for about 1 hour.

Comparative Example 1 The same operation as in Example 1 was carried out except that the polyvinyl alcohol solution having a low saponification degree was not applied.

Example 2 In Example 1, polyvinyl alcohol with a low saponification degree (UMR-30L, saponification degree 0 mol%) was added to UMR-10L.
The same operation was performed except that the unit was changed to (Unitika Ltd. , saponification degree 7 mol%).

Example 3 In Example 1, water-soluble polyvinyl alcohol (U
F-170M) is UP-180 (manufactured by Unitika Ltd. ,
The same operation was performed except that the saponification degree was changed from 87 to 89 mol%.

Comparative Example 2 The same operation as in Example 3 was carried out except that the polyvinyl alcohol solution having a low saponification degree was not applied.

Example 4 In Example 3, polyvinyl alcohol having a low saponification degree (UMR-30L, saponification degree 0 mol%) was added to UMR-10L.
(Unitika Ltd. , saponification degree 7 mol%) except that the same operation was performed.

Test Example A 10 cm square bag was prepared by heat sealing with the coated surface of the films obtained in Examples 1 to 4 inside. Similarly, similar bags were made from the films of Comparative Examples 1 and 2. 20 ml of distilled water was added to each bag to observe how it changed. The results are shown in Table 1. Also,
5 cm square of each film was added to 300 ml of distilled water, and changes in the situation were observed under stirring. Table 2 shows the state of the film after 1 hour.

[0027]

[Table 1]

[0028]

[Table 2]

In all of the examples, improvement in water retention was observed by the polyvinyl alcohol coating having a low degree of saponification, and comparable solubility was obtained as compared with the comparative examples.

[0030]

EFFECTS OF THE INVENTION The polyvinyl alcohol laminated film in the body waste product of the present invention is water-insoluble on one side for a long time, and when water is infiltrated from the other side of the film, the film is The whole can be easily dissolved or disintegrated in a short time, and
It is very useful when dumping to the toilet .

 ─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A 1-249343 (JP, A) JP-A 1-249342 (JP, A) JP-A 55-146154 (JP, A) JP-A 64- 80527 (JP, A) JP 55-90355 (JP, A)

Claims (1)

[Claims] 1. A saponification degree of 0 to 30 on one side of a film made of polyvinyl alcohol having a saponification degree of 70 to 98 mol%.
A body excrement article comprising a polyvinyl alcohol laminated film in which a mol% polyvinyl alcohol layer is laminated.
It is water impermeable and has a saponification degree of 0 to 30 mol%.
The alcohol layer surrounds body excretion and the degree of saponification is 70-
98 mol% polyvinyl alcohol film infiltrate water
When dissolved, the whole is immediately dissolved or dispersed in water.
A body excrement article characterized by.