Device at an end closure for a packaging container

Details Device at an end closure for a packaging container Device at an end closure for a packaging container

B - Operations, Transporting

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B65D 17/28 (2006.01) B29C 43/16 (2006.01) B29C 45/18 (2006.01) B65D 17/34 (2006.01) B65D 17/40 (2006.01) B65D 51/22 (2006.01)

Patent

CA 1320921

ABSTRACT A closure or closure element manufactured by injection moulding technique and provided with an easy opening device having a pull-ring and tearing denotations emerging therefrom. The closure is manufactured by injection moulding through one single ingot which is placed centrally. One of the parallel tearing denotations forms an area, which is concave seen from the ingot. Such area has been provided with a reduced wall thickness portion slowing down the flow of material when injection moulding. The dimensioning of the reduced wall thickness is such that the main flow of material follows the arrows, i.e. generally circumferentially around the tearing denotations in order to break the material orientation and provide an improved tearing characteristics.

590998

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