Process for the manufacturing of a mechanically conditioned...

B - Operations – Transporting – 29 – C

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B29C 55/10 (2006.01) B29C 47/00 (2006.01) B29C 55/12 (2006.01) B29C 55/28 (2006.01) B65D 65/38 (2006.01)

Patent

CA 2028206

ABSTRACT OF THE DISCLOSURE A process of expanding plastics film is disclosed, together with an apparatus for performing that process, in which expansion of the plastics film is performed under the control of a liquid providing a stable hydraulic mass, a preferred embodiment of the invention involving the downward extrusion and drawing of the plastics film and the final expansion thereof by use of the hydraulic mass at a position spaced downwardly of the extrusion head.

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