Packaging can and method and apparatus for its manufacture

Details Packaging can and method and apparatus for its manufacture Packaging can and method and apparatus for its manufacture

B - Operations, Transporting

21

D

B21D 51/26 (2006.01) B65B 7/01 (2006.01)

Patent

CA 2598760

A can for packaging food, comprising a metal can body and a diaphragm lid (16) formed of lidding material which comprises a multilayer structure with at least an aluminium layer of from 6 to 90 microns thickness and a bond layer for fixing the lid (16) directly to the can body. One method for forming the can forms the lidding material by using an outwardly extending curl (20) at one end of the metal can body as the draw die. Lidding material which is carried by the body maker punch is drawn around the curl of the can body draw die so as to form the lidding material into a cup shape.

L'invention concerne une boîte pour l'emballage d'aliments, comprenant un corps de boîte métallique et un opercule diaphragme formé de matériau d'operculage qui comprend une structure multicouche présentant au moins une couche d'aluminium d'une épaisseur comprise entre 6 et 90 microns et une couche de liaison permettant de fixer l'opercule directement sur le corps de boîte. Un procédé de formation de la boîte consiste à former le matériau d'operculage à l'aide d'un bord roulé s'étendant vers l'extérieur à une extrémité du corps de boîte métallique en tant que matrice d'emboutissage. Le matériau d'operculage qui est porté par le poinçon de la machine à former le corps d'une boîte métallique est étiré autour du bord roulé de la matrice d'emboutissage de boîte de manière à former le matériau d'operculage pour obtenir une forme de coupelle.

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