PURPOSE: To prevent the deterioration in the clearness eliminating color deviation in the multicolor printing by means of a water soluble high polymer film provided on the surface of a special water soluble paper.
CONSTITUTION: For the water soluble paper A, applicable is a paper made of a pulp converted into a carboxy methyl cellulose or the like. For the water soluble high polymer B, applicable are a synthetic high polymer, a botanical high polymer, an animal high polymer, a seaweed-based high polymer or the like. However, the optimal is a polyvinyl alcohol resin or a high molecular composition mainly made up thereof in that a thin film can adhere to the rough surface of a matter being expansively stretched because of excellence in softness and softening. For lamination, for example, there is a method of applying a solution of a water soluble high polymer B on the water soluble paper A by coating, spraying, immersion or the like and then drying thereof. In the lamination of A and B, it is desirable to have B partially permeated between the fibers of A.
NAKANISHI MOTOYASU
MASUDA MASUO
