Method of preforming a cover member of can-shaped container

Details Method of preforming a cover member of can-shaped container Method of preforming a cover member of can-shaped container

B - Operations, Transporting

29

C

18/52

B29C 45/14 (2006.01)

Patent

CA 1271605

S04-47235M/Y0/87 ABSTRACT OF THE DISCLOSURE A method of preforming a cover for a can. the cover is formed from a planar base having a metallic barrier layer and resin layers on either side thereof. The base is first premolded to have a flat bottom recess, a cylindrical sidewall, and preferably an upper flap portion. In the premolding the base is stretched no more than by a factor of 1.8. Then a resin is injection molded over the premolded base to form either a uniform bottom cover or a top cover with a. tab.

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