Patent ID: 8211344
Filing Date: 2012-07-03
Classification: C09D,Y10T

Abstract:
1. A manufacturing process for obtaining an object, said object being made of a multi-layer film comprising an upper (visible) layer of a semicrystalline polyamide and a lower layer of a second polymer and having a particular surface finish, said process comprising the step of applying a thermomechanical treatment to form said object between the T g (glass transition temperature) and the T m (melting point) of said semicrystalline polyamide, wherein said thermomechanical treatment is selected from the group consisting of compression moulding, undermoulding, injection moulding, sheet extrusion/calendering, lamination process, screen printing, thermoforming process, stamping process, in-mould decoration (IMD) process, sintering process, welding process, and wherein the transparency of the semicrystalline polyamide is such that the light transmission at 560 nm on a polished object 1 mm in thickness is greater than 80%.