B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
327/11
B29C 37/04 (2006.01) B29C 65/00 (2006.01) B29C 65/04 (2006.01) B29C 65/74 (2006.01) B65B 51/24 (2006.01)
Patent
CA 1129501
ABSTRACT A method and apparatus are disclosed for dielec- tric welding together of two thermoplastic flanged parts to form a flangeless, typically thin-walled, thermoplastic shell. A pair of relatively movable, clamping electrodes, which define a shell-receiving hollowed space bounded by flange-engaging areas, operate together to create a flange- less weld. The characteristics of the flange-engaging areas, the dielectric field application, the clamping action, and the timing of various operations are all important features of the invention. One of the preferred embodiments re- lates to a double-beveled cutting electrode.
344545
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Johnson (s. C.) & Son Inc.
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