Patent ID: 11447315

Abstract:
This invention relates to a method for the production of a co-extruded plasticized multi-layer PVC packaging film that consists of polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), a combination that consists of polyvinyl chloride (PVC) and polyvinylidene chloride (PVDC) or other thermoplastics or elastomers that can be co-polymerized with PVC, having a plasticizer migration behavior from the film composite, which is reduced compared to comparable mono-layer plasticized PVC films and is maximally restricted to 40 mg/dm2. The invention also relates to a co-extruded plasticized multi-layer PVC packaging film that consists of polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), a combination that consists of polyvinyl chloride (PVC) and polyvinylidene chloride (PVDC) or other thermoplastics or elastomers that can be co-polymerized with PVC, having a plasticizer migration behavior from the film composite, which is reduced compared to comparable plasticized mono-layer PVC films and is maximally restricted to 40 mg/dm2.