| 摘要 |
<p>PURPOSE:To improve the moldability of a pad and at the same time enable to prevent the deformation due to heating and the burst of expanded layer by a method wherein composite foam sheets are vacuum-molded by laminating one another so as to abut a surface, onto which non-expanded layer does not be formed, against the rear surface of fabric. CONSTITUTION:In composite foam sheets consisting of polyvinyl chloride foam, onto one surface of which non-expanded layer is formed, the non-expanded layer is located on the surface opposite to the surface contacting with fabric. The 10% modulus of the non-expanded layer is 1-50kg/cm<2>. The skin formed by laminating the fabric skin to the composite foam sheet is shaped with a vacuum molding tool into the desired form, heated up to a slightly higher temperature and vacuum-molded so as to integrally foam-mold said vacuum-molded laminated skin, expandable urethane stock liquid and core material. Consequently, the penetration of expanding liquid into the fabric layer during integral molding and its curing can be prevented. In addition, the deformation due to heating and the burst of the expanded layer can be prevented.</p> |
