METHOD FOR PRODUCING EMBOSSED, EXPANDED THERMOPLASTICS SHEET

摘要

1300006 Embossing IMPERIAL CHEMICAL INDUSTRIES Ltd 19 April 1971 [20 Nov 1970] 55249/70 Addition to 1168273 Heading B6J In a process as described in parent Specification (Heading B6J) the thermoplastics sheet includes a blowing agent which causes the sheet to be expanded when heated in the embossing step. The embossing surface may be arranged to perforate the sheet in certain areas during the embossing step. The thermoplastics sheet may be laminated to one or more additional sheets.