B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 41/04 (2006.01) B29B 9/06 (2006.01) B29C 43/00 (2006.01) B29C 70/62 (2006.01)
Patent
CA 2235432
A method of compression molding a closure having a base wall and peripheral skirt with internal threads, a thermoplastic resin blended with metallic particles wherein the particles are added in elliptical or spherical form. The metallic particles are provided in a carrier of resin which is then blended with the resin of the closure and the melt blend is extruded through a nozzle and cut into individual pellets. Each pellet is deposited into the cavity of a mold which is then closed to compression mold a closure.
Cette invention concerne une méthode de moulage par compression d'une fermeture ayant un fond et une jupe périphérique à filetage intérieur, à partir d'une résine thermoplastique additionnée de particules métalliques ovoïdes ou sphériques. Ces particules sont incorporées à une matière de charge qui est mélangée à la résine avant qu'elle ne soit extrudée et découpée en pastilles à déposer dans le creux d'un moule de moulage par compression.
Gowling Lafleur Henderson Llp
Owens-Illinois Closure Inc.
LandOfFree
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