| 摘要 |
PROBLEM TO BE SOLVED: To provide a holding material having strong separating strength, and a long time usableness, by laminating in order a thermal plastic resin layer including the compositions of a supporter and a wet foam layer and the wet foam layer on the supporter. SOLUTION: A holding material strong in separating strength can be obtained by laminating in order a thermal plastic resin layer including the compositions of a supporter and a wet foam layer and the wet foam layer on the supporter. Moreover the supporter - the thermal plastic resin layer - the wet foam layer can be made to firmly adhere with each other, to obtain the holding material having separating strength sharply exceeding 2000 g/25 mm, by using polyester- polyurethane copolymer as the thermal plastic resin layer. |
