Composite foil for making resealable tray pack, e.g. for food, is made from 2 coextrusion foils, one with sealable outer, migration barrier and skin layers, other with skin, permanent adhesive and covering layers, by bonding skin layers

摘要

Composite foil for making resealable tray packs, with at least (A) a sealable outer layer, (B) a migration barrier layer, (C) a permanent adhesive layer that can be partly exposed in use and (D) a covering layer in the sequence A/B/C/D, comprises 2 coextrusion foils bonded with one another, the first with layers A, B and (F1) a skin layer in the sequence A/B/F1 and the second with layers C, D and (F2) another skin layer, covering C, in the sequence F2/C/D; the 2 skin layers (F1, F2) being bonded with one another.