Novelis, Montebello Packaging file India patent application for methods of pressure-forming metal containers and the like from preforms having a wall thickness gradient that decreases progressively in a direction away from the closed end

Elyse Blye

Elyse Blye

NEW DELHI , December 18, 2013 () – Canada based Novelis Inc and Montebello Packaging filed patent application for methods of pressure forming metal containers and the like from preforms having wall thickness gradient. The inventors are Mallory Robert and Shi Yihai.

Novelis Inc and Montebello Packaging filed the patent application on July 11, 2012. The patent application number is 6150/DELNP/2012 A. The international classification numbers are B21D26/02 and B21D51/26.

According to the Controller General of Patents, Designs & Trade Marks, "A method of forming a bottle shaped or other contoured metal container by providing a hollow metal preform having a closed end and a wall thickness that decreases progressively in a direction away from the closed end and subjecting the preform to internal fluid pressure to cause the preform to expand against the wall of a die cavity defining the desired container shape. The method may be employed in pressure ram forming procedures wherein a punch is advanced by means of a backing ram into the die cavity to displace and deform the closed end of the preform."

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