Method and apparatus for controlling the temperature of a container end portion during manufacture

Abstract

Disclosed is a method and apparatus for controlling the temperature of a container end portion during manufacture, said container being filled with a product 11, and comprising a substantially tubular body portion 10 of thin-walled plastic or laminated plastic material and a butt-weldable end-piece 13 at each end of the body portion, whereby a first end-piece is fitted to one end of the body portion and the product 11 is introduced into the container via the open end of the body portion, a second end-piece 13 is introduced into the said open body portion end to an intermediate position where it partially projects into the body portion 10, and the plastic material of the body portion end region and the second end-piece is softened through application of heat energy, characterized in that the end-piece 13, by means of relative displacement between it and the body portion 10, is pressed in to the body portion to its terminal position whilst cooling gas is supplied to the transverse wall 15 of the end-piece 13.

Dependencies are inferred from the claim text.