| 摘要 |
PURPOSE:To smoothly release a kraft paper from a urethane foam without the occurrence of release-irregularities, by a method wherein, a permeable base paper and a plastic film are heat-fusion laminated with each other in temporary bonded state. CONSTITUTION:A plastic film layer 3 heat-fusion laminated on a permeable base paper in temporarily bonded state is so constructed as to be releasable from the permeable base paper 2 by a remarkably small release force as shown by an arrow. In a process paper constructed as the above, when a urethane foam A is foam molded with the plastic film layer 3 of a process paper body 1 disposed inside and in contact with the urethane resin or urethane foam, an adhesion strength between the urethane foam and the plastic film is higher than that between the permeable base paper and the plastic film in the process paper. As a result, the plastic film layer 3 adheres and transfers on the surface of the urethane foam A, and the permeable base paper 2 is easily released to be taken up. |
