초록 ▼

A lid for a packaging container which include a tear-open part which is surrounded by a weakened line. The lid is molded of a composite material, which has an outer carrier layer of plastic, a middle barrier layer of metal foil and an inner heat-sealing layer of a thermoplastic synthetic material. T

A lid for a packaging container which include a tear-open part which is surrounded by a weakened line. The lid is molded of a composite material, which has an outer carrier layer of plastic, a middle barrier layer of metal foil and an inner heat-sealing layer of a thermoplastic synthetic material. The weakened line is produced as an indentation in the outer carrier layer by being heat-impressed using a heated tool.

대표청구항 ▼

A container lid having an opening device, said lid comprising at least an outer, thick carrier layer made of a thermoplastic synthetic material and an inner sealing layer capable of being welded to a container body, said carrier layer including a weakened line indentation at least partially surround

A container lid having an opening device, said lid comprising at least an outer, thick carrier layer made of a thermoplastic synthetic material and an inner sealing layer capable of being welded to a container body, said carrier layer including a weakened line indentation at least partially surrounding a tear-open portion, characterized in that the container lid is formed by a composite laminate material and that the weakened indentation line in the carrier layer of the composite material is embodied as a heat-impressed indentation.