| 摘要 |
1. Process for the production of an embossed deep-drawable foamed composite film, consisting of a compact covering layer of thermoplastic synthetic material and a lower-sided foamed synthetic material layer, whereby a formed covering layer is applied to a foaming agent-containing plastisol, which is present on a carrier layer, subsequently the lamellar body is warmed and the plastisol thereby first gelled on at a temperature of 140 to 160 degrees C and then foamed at a temperature of 190 to 220 degrees C and the plastisol thereby completely fills up the rear side marking of the embossed structure and, after cooling has taken place, the foamed composite film is stripped off from the carrier layer and rolled up, characterised in that the covering film with a thickness of 0.1-1 mm is embossed, before the application of the plastisol, at a bulk temperature between 140 to 220 degrees C and thereafter cooled, and, after the pressing on of the cooled, embossed covering layer on to the plastisol, the gelling on of the plastisol and the foaming take place. |
