Procedure for the production of multi-layer composite film, multi-layer composite film and its use

摘要

The invention concerns a process for the production of a co-extruded and/or laminated and biaxially spread composite film and a resulting multi-layer film which has improved processing and/or recyclability.To this end, the invention proposes a novel combination of the density of different layers of composite film and certain manufacturing parameters such as stretching factors, relaxation factors, relaxation temperatures and residual stretching factors.