JPH09143893A - Water-soluble paper and feces-treating bag made from the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a feces-treating bag used in a chamber pot and capable of being thrown away in a flushing toilet by employing water-soluble paper containing polyvinyl alcohol resin as a binder and further containing a boron compound and a gel-inhibiting agent for the resin. SOLUTION: Water-soluble paper using polyvinyl alcohol resin as a binder is impregnated with a treating solution containing a boron compound such as boric acid or borax as a water dissolution-controlling agent in an amount of 1-6wt.% based on the weight of the paper and further containing one or more compounds selected from the group of glycerol, ethylenediaminetetraacetic acid and a higher alcohol as a gel-inhibiting agent for the polyvinyl alcohol resin in an amount of 0.5-5wt.% based on the weight of the paper and subsequently dried to produce the water-soluble paper. The water-soluble paper is cut, and the sticking parts of the formed paper pieces are stuck to each other into a bag with an adhesive comprising a polyvinyl alcohol resin and a highly water-absorbing polymer such as an acryl-modified starch to form the feces- treating bag for a chamber pot.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can withstand the water contained in potty sewage, but will disintegrate against a large amount of water so that it can be dumped in a flush toilet and sewage treatment comprising the same. Regarding the bag.

[0002]

2. Description of the Related Art As a technique of hydrolyzed paper itself, Japanese Patent Laid-Open No. 2-1540
No. 95 is known, but this is a paper made from a water-dispersible fiber web using a water-soluble binder containing a carboxyl group, and has a mechanical strength better than toilet paper etc. in the dry state, but is weak against water, for example, Even if water partially adheres to the paper, the binder component swells and dissolves in water,
It was not suitable for practical use because the fibrous webs that compose the paper were unbonded and the paper fell apart and collapsed.

As a binder for hydrolyzed paper, a high molecular weight polyvinyl alcohol resin (hereinafter referred to as "PVA") or a sodium salt of carboxymethyl cellulose (which has a binding action to papermaking raw materials but is also water-soluble) is generally used. CMC) is used, but the hydrolyzed paper constituted by this is widely used as a base material for toilet cleaners. Wet products obtained by impregnating hydrolyzed paper with an aqueous or oily liquid have also been developed (JP-A-59-144426), for example, tissue paper impregnated with an alcohol solution in which a germicide is dissolved (JP-A-5-15469). (Patent Publication No. 5-20093), a water-washing face cleaning paper impregnated with a liquid containing a surfactant and a cosmetic oily raw material as active ingredients (Japanese Patent Publication No. 5-20093), and a non-woven fabric using a PVA resin binder and boron such as boric acid or borax. Wet hydrolyzed paper containing a solution containing the solution (JP-A-3-213596), hydrolyzed paper using a binder obtained by adding polyamide polyamine epoxy modified resin to PVA resin impregnated with an alcohol detergent (JP-A-3-213596). No. 76900) is also known. However, in all cases, the hydrolyzed paper is impregnated with the treatment liquid, but since the strength of the obtained product is retained only in the wet state with the treatment liquid having a limited composition, in the wet state containing the impregnation liquid. It is not suitable as a water disintegrating paper because it is not strong enough to be used in contact with moisture, and the impregnating liquid also contains oily raw materials, so it is suitable for disposal in flush toilets. There wasn't. As described above, it has been desired to develop a so-called “dry tissue” type hydrolyzed paper which has an appropriate strength even for a small amount of water and exhibits water decomposability for a large amount of water.

[0004]

[Problems to be Solved by the Invention] In general, the psychology of not wanting to touch filth and not wanting to see filth acts on workers, but the tendency to dispose of potty filth and wash containers is becoming stronger and stronger. There has been a longing for an easy response to waste disposal. In this way, it is convenient to put a waste treatment bag inside the potty and to dispose of the waste in the toilet without being directly exposed to the outside in the state that the waste is wrapped up without touching the waste. However, it was impossible to use the conventional waste disposal bag composed of hydrolyzed paper in this way. This is because if the conventional hydrolyzed paper is wrapped up, the water disintegrated paper will collapse in a short time due to the water content of the waste, and the function of the processing bag will not be fulfilled. The most important issue is to find a material that can be used as a waste disposal bag because it retains its physical strength against a small amount of water in a dry state and is rapidly decomposed when it is contacted with a large amount of water by dumping in water. It is a matter of clearing out. The present invention completely solves the above problems, and improves the physical properties of hydrolyzed paper against water,
It discloses a hydrolyzed paper that has sufficient resistance to the amount of water contained in waste and can be used as a waste disposal bag, and when it is thrown into a flush toilet, the tissue structure of the paper completely collapses. It also provides a filth-disposal bag composed of the above. That is, in the present invention, PV is used as a binder.
A hydrolyzed paper using resin A is impregnated with a treatment solution containing a boron compound and a gel inhibitor as a water decomposition control of the hydrolyzed paper in a post-treatment step, and dried to contain the above components in the hydrolyzed paper. The above problem was solved.

[0005]

DISCLOSURE OF THE INVENTION The present invention comprises a hydrolyzed paper improved so as to maintain sufficient strength against the water content of filth, and promptly disintegrates into water when thrown into water, and a hydrolyzed paper of this type. Regarding the treated waste disposal bag. The hydrolyzed paper which is the target of the impregnation treatment in the present invention is a hydrolyzed paper using a water-soluble binder mainly composed of PVA resin. On the other hand, CMC that has been frequently used together with PVA resin
When used as a binder, CMC is insoluble in water due to a chemical reaction with a boron compound contained in the impregnation treatment liquid, and therefore the hydrolyzed paper cannot be disintegrated in a short time, which is not suitable as a binder. . The boron compound is used as a decomposition regulator for controlling the disintegration of hydrolyzed paper into water, and boric acid or borax can be used. If the weight of the paper is 1 wt% or less, the strength of the paper is not enough against the water content of the waste. However, if it is 6 wt% or more, it will be thrown into water and the paper will take a long time to disintegrate, which may cause the flush toilet to be clogged. Therefore, the range of 1 wt% to 6 wt% is preferable.

In the present invention, if the hydrolyzed paper using the PVA resin as the binder contains only the boron compound as the decomposition regulator, the degradability of the PVA resin binder into water decreases with time. In order to prevent this, it is necessary to improve the disintegration of hydrolyzed paper into water by adding a compound that suppresses gelation of the PVA resin used as the binder. By adding one or more selected from the group consisting of glycerin, EDTA and higher alcohols as a gel inhibitor for the PVA resin, the time-dependent change in water-decomposability of the hydrolyzed paper using the PVA resin as a binder is added. It can be lost. When the gel inhibitor is not added to the boron compound as the decomposition regulator, the water-decomposability of the hydrolyzed paper varies after about 2 months after the treatment with the impregnating liquid. That is, by adding the gel inhibitor within the range of several% to the impregnating liquid, it is possible to prevent the water decomposition rate of the hydrolyzed paper from decreasing. The above gel inhibitor is 0.5 wt% based on the weight of paper.
It is sufficient to add about 5 wt%.

The hydrolyzed paper impregnated according to the present invention can be made into a bag-like filth-disposal bag by forming it into a bag shape by a conventional means for bag making. The bag is cut into a cross shape and laminated in a bag shape. It can also be formed. At this time, it is appropriate to use a water-soluble adhesive as the adhesive to be used for the bonding portion of the bag, but it is necessary to mix the PVA resin and the acrylic modified starch which is a high water-absorbing polymer in the composition. It is appropriate to stick the above from the viewpoint of preventing water leakage.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION To test the performance of the hydrolyzed paper of the present invention, a hydrolyzed paper having a PVA resin as a binder was used as a treated substrate, and boric acid was used as a boron compound and glycerin was used as a gel inhibitor, respectively. The state of tissue disintegration of paper into water was examined. As a hydrolyzed paper using a PVA resin as a binder, a hydrolyzed paper manufactured by Taisho Paper Manufacturing Co., Ltd. was used. The amount of boric acid used is 0%, 2%, 3%, 4%, 5% or 6% (based on paper weight). 2% glycerin in an aqueous solution containing boric acid
An aqueous solution containing (paper weight basis) is impregnated with the above hydrolyzed paper, and after squeezing, it is dried at 80 ° C. for 10 minutes, and the hydrolyzed paper is molded into a concave shape with a diameter of 20 cm and a length of 15 cm, which is used for potty. A waste disposal bag was created. The strength of the hydrolyzed paper when immersed in water was remarkably different depending on the content of boric acid containing the gel inhibitor, and Table 1 shows the strength change. According to the above test results, when the impregnated water-disintegrated paper of the present invention is used, the strength of the paper is maintained when the liquid ratio is low (the amount of water to the water-disintegrated paper is small), and the high liquid ratio (water to water-dissolved paper) is maintained. Since it dissolves in water in a short time (when the amount is large), it can be seen that it can function as a treatment bag that can be taken out of the chamber and discarded in the toilet. Table 2 shows the results of measuring the water decomposability of the hydrolyzed paper immediately after the impregnation solution treatment and after the lapse of 2 months, regarding the effect of adding glycerin as a gel inhibitor for the PVA resin. This shows that the addition of glycerin is extremely effective in preventing the water-decomposability of hydrolyzed paper from changing over time. The waste treatment bag was made using hydrolyzed paper as follows.

[0009]

[Example 1] 3% boric acid was added to hydrolyzed paper manufactured by Taisho Paper Manufacturing Co., Ltd.
And impregnated with an aqueous solution containing 2% glycerin, squeezed with a squeezing ratio of 100%, dried at 80 ° C, and dried hydrolyzed paper directly 20 cm
A filth-disposal bag for making a concave shape after impregnation with a depth of 15 cm was prepared.

[0010]

[Example 2] 3% boric acid was added to hydrolyzed paper manufactured by Taisho Paper Manufacturing Co., Ltd.
And impregnated with an aqueous solution containing 3% EDTA, squeezed at a squeezing rate of 100%, dried at 80 ° C., and the dried hydrolyzed paper is cut in a cross shape to form a bag-shaped PVA and super absorbent polymer acrylic. The modified starch was mixed and bonded with an adhesive to form a potted soil treatment bag.

[0011]

[Table 1]

[0012]

[Table 2]

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Koji Nakamura 6-3-1, Nishiawaji, Higashiyodogawa-ku, Osaka City, Osaka Prefecture Nakamura Bussan Co., Ltd. Awaji Factory

Claims (5)

[Claims] 1. A hydrolyzed paper using a PVA resin as a binder, which contains a boron compound and a gel inhibitor for a PVA resin. 2. A boron compound of 1 wt% to 6 wt% (based on paper weight) and a PVA resin gel inhibitor of 0.5 wt% to 5 wt%.
(The same) It uses, The hydrolyzed paper of Claim 1 characterized by the above-mentioned. 3. The gel inhibitor for a PVA resin is one or two or more components selected from the group consisting of glycerin, EDTA and higher alcohols. Water-disintegrating paper described in crab. 4. A sewage treatment bag for a potty, which comprises the hydrolyzed paper according to any one of claims 1 to 3. 5. The waste disposal bag according to claim 4, wherein the PVA resin and the high water-absorbing polymer are used as an adhesive and are bonded together.