B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
B21D 51/26 (2006.01)
Patent
CA 2651778
The present invention provides a necking system including a plurality of necking dies each necking dies having an at least partially non-polished necking surface (10) and a non-polished relief (20) following the necking surface. The present invention further provides a method of necking an metal container including providing an metal blank; shaping the blank into a bottle stock (1-14); and necking the metal bottle stock (1-14), wherein necking includes at least one necking die having an at least partially non-polished necking surface (10).
L'invention concerne un système de formation de col qui comprend une pluralité de matrices de formation de col possédant chacune une surface de formation de col au moins partiellement non polie et un relief non poli qui suit la surface de formation de col. L'invention concerne en outre un procédé qui permet de former un col sur un contenant métallique, lequel procédé consiste à former une découpe métallique; à mettre en forme la découpe en un demi-produit de bouteille; et à former le col sur le demi-produit de bouteille, la formation du col faisant appel à au moins une matrice de formation de col possédant une surface de formation de col au moins partiellement non polie.
Dick Robert E.
Fedusa Anthony
Myers Gary L.
Alcoa Inc.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
LandOfFree
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