| 摘要 |
PURPOSE:To provide the titled wall covering free from the formation of wrinkles caused by the elongation of the substrate nor the generation of mold in the paste, and usable for a long period without causing the surface waviness and peeling, by providing a water-impermeable layer between the substrate and the foamed layer composed mainly of a vinyl chloride resin and containing a highly water-absorbing polymer. CONSTITUTION:The objective wall covering is composed of (A) a foamed layer made of a resin composition consisting of (i) a vinyl chloride resin, (ii) a highly water-absorbing polymer having an average particle diameter of <=100mu, preferably <=50mu and capable of absorbing >=30 times weight of water based on own weight, and (iii) a plasticizer, (B) a substrate (e.g. paper, cloth, nonwoven cloth, wood plate, etc.) and (C) a water-impermeable layer, preferably a non-foamed vinyl chloride resin having high adhesivity to the foamed layer and excellent moldability, between the foamed layer A and the substrate B. The highly water-absorbing resin is a polyelectrolyte containing carboxylic acid salt and having crosslinked structure, preferably a saponified copolymer of a vinyl ester and an ethylenic unsaturated carboxylic acid (derivative). The amount of the water-absorbing polymer is 5-150pts.wt. per 100pts.wt. of the vinyl chloride resin. |
