Water soluble paper and its making process

Abstract

The present invention relates to a water soluble paper and its production method. Its production method adopts the processes of making pulp, pulp-coating, vacuum dehydration, drying and calendering, and includes two steps: first step: making screen paper: making water soluble vinylon fibre into pulp and making it into fine fibre, adopting wet paper-making process to form screen, vacuum dehydration and drying to obtain screen paper; then second step: making water soluble paper; placing the screen paper into the saturated solution of polyvinyl alcohol to coat pulp, vacuum dehydration, drying and calendering by means of calender to obtain the invented water soluble paper. The invented water soluble paper comprises water soluble vinylon fibre and polyvinyl alcohol, and possesses good water soluble effect, under the condition of water temp. of 70 deg.c it it can completely dissolved. Its production process is simple, and its air permeability is zero, and the bag made of said water soluble paper has no leakage, can be used for holding medical utensil to make disinfection.

Description

(1) Technical field: [0001] This invention relates to paper and a method of making paper. (two) background technology: [0002] In Japan, the so-called water-soluble paper research uses CMC technology (that is, the technology that the cotton fiber can be dissolved in water after chemical treatment) to produce water-soluble paper. Japan's Mishima Paper Co., Ltd. used CMC technology to develop water-soluble paper at room temperature. One side is water-soluble paper made of treated cotton fibers very thin, and the other side is paper made of normal wood pulp. The two sides are separated by P.V.C film. Open, try to use it as a beer bottle trademark, and it will fall off automatically when the beer bottle is washed in the industry. The test was successful, but the cost was too high, and the chemical treatment cost of cotton fiber was high, the market did not accept it, and the use was terminated. Japan also uses polyvinyl alcohol to produce water-soluble films, but when water-s...

AI Technical Summary

Problems solved by technology

The test was successful, but the cost was too high, the cost of chemical treatment of cotton fiber was high, the market did not accept it, and the use was terminated

Japan also uses polyvinyl alcohol to produce water-soluble films, but when water-soluble films are used, they are too thin and soft, and the application effect is not good.