Tube forming method

B - Operations – Transporting – 21 – D

Patent

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113/47, 113/86

B21D 51/44 (2006.01) B29C 53/50 (2006.01) B29C 65/00 (2006.01) B29C 65/02 (2006.01) B29C 65/78 (2006.01)

Patent

CA 1112951

Abstract of the Disclosure A laminate of non-ferrous metal foil and heat softenable material is folded to tubular form to juxtapose the margins and the margins are heat sealed by passing the tube through an inductance coil; the inductance field may be intensified by a ferrite bar located in a mandrel over which the tube is fed.

325156

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