Closure cap with a linerless seal and a method for forming...

Details Closure cap with a linerless seal and a method for forming... Closure cap with a linerless seal and a method for forming...

B - Operations, Transporting

65

D

206/19, 18/52

B65D 41/04 (2006.01) B29C 57/12 (2006.01)

Patent

CA 1330778

ABSTRACT OF THE DISCLOSURE A linerless cap for a container and a method of forming the cap. In the method the cap is moulded from plastic and includes a top wall, an outer depending skirt and an internal depending substantially annular wall having an upper end integral with and depending from the top wall and a lower free end. Thereafter the free end is engaged by an essentially concave surface of a curling tool to progressively turn the free end away from the internal wall to curve the free end into a curvilinear compressible and resilient free end adapted to be engaged for sealing. The engageable free end of the seal can have a coil, O, U, J or quarter round cross sectional shape and can be a rim, plug or corner seal.

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