| 摘要 |
A process for producing a laminate of polypropylene bonded to a metal substrate such as steel or aluminium strip, preferably electrolytically chromium coated steel for making can ends, comprises laminating a polypropylene film to the metal and subjecting the film to a temperature above its melting point, and then uniformly and rapidly cooling the laminate to a temperature substantially below the melting point of the polypropylene by flooding the polypropylene coated surface of the laminate with cold liquid, ? water at room temperature. |
