Patent ID: 8393491
Filing Date: 2013-03-12
Classification: B65D

Abstract:
1. A neck closure comprising a hermetically sealed neck and a cover cap for opening, comprising a wedge-shaped hollow neck with lip parts which are formed at a front wedge edge by two wedge faces tapering toward one another and which are connected in one piece via a thin region to form a closed lip, and of a cover cap capable of being slipped over this wedge-shaped neck, characterized in that, in a slipped-over state, the cover cap has an internal shape configured to hold a front region of the wedge-shaped neck, twisted clockwise, as seen from above, through at least 5 degrees with respect to its detensioned normal position, and in that, when the cover cap is rotated out of this closing position, the thin region is torn when the front wedge edge region of the neck is acted upon counterclockwise, as seen from above, by pressure faces projecting on an inside of the cover cap, solely at points lying diagonally opposite one another on this front wedge edge region, and remaining regions in a vicinity of the edge lie opposite a free space within the cover cap.