Bottles and jars – Closures – Cap type
Patent
1985-12-12
1987-11-24
Norton, Donald F.
Bottles and jars
Closures
Cap type
215344, 215DIG1, 264295, 264296, 264322, B65D 5300
Patent
active
047082550
ABSTRACT:
A linerless cap for a container and a method of forming the cap. In the method the cap is molded 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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Norton Donald F.
Tri-Tech Systems International Inc.
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