| abstract |
A composite film (20) comprises at least one backing film (1) made of a backing material (8), at least one barrier layer (2) made of a barrier film (9) and at least one laminating adhesive layer (3) therebetween. On the side of the barrier layer (2) away from the backing layer (1), the composite film (20) has a raised pattern (31), and in the area of the raised pattern (31), the barrier layer (2) has stretched stretching regions (6) relative to the non-stretched barrier film (9). In the area of the raised pattern (31), the barrier layer (2) has on the side facing the backing layer (1) surfaces that are not joined to the backing layer (1). |