PEEL-SEAL FOIL FOR REALIZING A VALVE

摘要

A foil made of two plastic films and an adhesive layer laminating the two films together, wherein the first plastic film (2) has a first side (8) and a second side (9) and comprises punctures (5) and is of a dual peel seal type such that the first plastic film (2) realizes a first peel-able seal (10) within the foil (1) by the aid of its first side (8) in the form of an adhesion peel seal in its open state and/or in the form of a cohesion peel seal in its sealed state, and wherein the adhesive layer (4) leaves open the punctures (5) such that gas can penetrate trough the punctures (5) in-between the two films (2, 3) towards the first peel-able seal (10).