Patent ID: 6790508
Filing Date: 2004-09-14
Classification: B32B,B65D,Y10T

Abstract:
A multiple film sheet for peel-off lids for plastic containers with preset opening, comprising:a first film set, including a film layer of aluminum, an outer film of polythene coated externally to said aluminum film layer, a last, orientated plastic film, and an adhesive layer provided between the aluminum film layer and the orientated plastic film; a second film set, including a first pre-perforated orientated plastic film, a last non-perforated polythene film that is heat-sealed to an edge of a container, and an adhesive layer provided between said orientated plastic film and said polythene film; and a hot-extruded polythene layer being interposed between said first and second film sets and coupling the last orientated plastic film of the first film set and the first orientated plastic film of the second film set, said hot-extruded polythene layer penetrating holes of the first orientated plastic film of said second film set and being heat-sealed to the non-perforated polythene film of the second film set, which is heat-sealed to the edge of the container.