| 摘要 |
PURPOSE:To obtain a composite foam having a resin layer whose quality is different from that of the foam, by a method wherein mold clamping is performed by charging a thermoplastic resin foam into an injection mold and thermoplastic resin and thermoplastic resin foam are unified by injecting the thermoplastic resin at least to one side of the foam. CONSTITUTION:Mold clamping is performed by charging a foam 2 within an injection mold 1, thermoplastic resin is injected through an injection machine 3 and a thermoplastic resin layer 4 obtained by integrating with the foam 2 is formed. A thermoplastic resin foam is used as the foam 2. A matter whose isolated cell factor is at least 80% is used as the foam 2. When the isolated cell factor of the foam 2 becomes low, the foam is heated more than it is required at the time of injection of the resin, which is molten and flowing, a broken cell, contraction and a deformation are generated and it happens that a uniform molded body is not obtained. Various combinations of the foams and resin layers which are different from one another can be obtained and a range of kinds of combinations among the foams and resin layers may be widened. |
