Closure edge protection via polymer coated metal

Details Closure edge protection via polymer coated metal Closure edge protection via polymer coated metal

B - Operations, Transporting

65

D

B65D 41/00 (2006.01) B21D 51/44 (2006.01) B65D 51/14 (2006.01)

Patent

CA 2718704

Metal closure components and methods for making the same are provided. The closures may be formed from a metal sheet (156) having a pre-formed polymer film (158) adhered on at least one face. A circular blank may be cut from the sheet, such that the blank may have a circular "raw" cut edge (160) unprotected by the polymer film. The metal blank may then be formed such that the cut edged may be embedded (172) into the film.

Linvention concerne des composants de fermeture en métal et des procédés de préparation de ces derniers. Les fermetures peuvent être formées à partir dune feuille de métal (156) qui possède un film polymère préformé (158) adhérent sur au moins une face. Un flan  circulaire peut être coupé dans la feuille, de telle sorte que le flan  peut avoir un bord coupé « brut » circulaire (160) qui nest pas protégé par le film polymère. Le flan de métal peut ensuite être formé de telle sorte que le bord coupé peut être incorporé (172) dans le film.

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