| 摘要 |
Prodn. of parts, partic. for the automotive industry, having a rigid plastic portion covered, at least on one face, with a porous foam material. The two materials being bonded into a single unit by injecting the rigid plastic in molten form into a mould contg. the flexible porous foam which is subjected to a compression force, closing the pore structure and preventing over penetration of the molten plastic into the foam but still allowing superficial penetration to form the bond between the two layers. Prior to compression of the foam portion the superficial zone that will be brought into contact with the molten plastic is melted so that the open superficial cells are filled with water which prevents penetration of the molten plastic during injection. Also claimed are the articles obtd. |
