End closure for a packaging container

Details End closure for a packaging container End closure for a packaging container

B - Operations, Transporting

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B29C 45/18 (2006.01) B29C 43/16 (2006.01) B65D 17/28 (2006.01) B65D 17/34 (2006.01) B65D 17/347 (2006.01) B65D 17/353 (2006.01) B65D 17/40 (2006.01) B65D 41/32 (2006.01) B65D 41/50 (2006.01) B65D 47/36 (2006.01) B65D 51/22 (2006.01)

Patent

CA 1318270

ABSTRACT Through a centrally placed ingot there is formed an injection moulded cover or end closure for a packaging container com- prising at least an outer layer and an easy opening device formed therein, said device having a grip and a tearing denotation starting therefrom. The tearing device comprises a first weakening line which merges into a circumferential, all around the end closure extending tearing device, and a second weakening line which does not fully encompass the centrally placed ingot. Between the ingot and the end of the second weakening line and the transition region between the grip and the tearing devices there is formed a wide material flow passage. A material weakening wall thickness reduction in the shape of a blind groove has a substantial extension in the circum- ferential direction and bridges over the material flow passage. Flow openings for circumferential deflection of material are arranged at each end of the material flow passage.

590996

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