Patent ID: 9266652
Filing Date: 2016-02-23
CPC Classification: B31F,B32B,B65D

Claim Text:
1. A composite film ( 100 ) for packaging containers ( 1 ), having a film composite made of a plurality of packaging material layers ( 101 to 108 ), wherein an inner packaging material layer ( 108 ) is designed as a heat-sealing layer and an opening device ( 10 ) is fixed to an outer packaging material layer ( 101 ), and wherein the packaging material layers ( 101 to 108 ) comprise a weakening region ( 20 ) in a region of the opening device ( 10 ), wherein the weakening region ( 20 ) is disposed on a side of the inner packaging material layer ( 108 ) and not on a side of the outer packaging material layer, and is implemented as an at least partial reduction in a layer thickness (D) of the inner packaging material layer ( 108 ), wherein a shape of the weakening region ( 20 ) is adapted to an arrangement of cutters ( 13 ) that are disposed on a partial circular diameter (T) of the opening device ( 10 ) as a part of the opening device ( 10 ).