B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
154/29.04
B29C 65/02 (2006.01) B29C 65/18 (2006.01)
Patent
CA 1295539
ABSTRACT Apparatus for thermally welding two layers together including; a first and second bar, wherein one of the bars presents a larger welding surface than the other bar; structure for reciprocally moving at least one of the bars relative to the other bar, in a first direction between an open position wherein the bars are disposed in spaced apart relationship so as to permit the insertion and withdrawal of said layers between the bars, and a closed position wherein at least one of said bars is adapted to apply heat and pressure to said layers for welding said layers together; and structure which reciprocally moves at least one of said bars relative the other bar in a second direction between two limit positions so as to present different portions of said bar having the larger welding surface for each successive weld of said layers to evenly utilize the entire welding surface of the larger welding surface over successive welds.
564772
Hattem Nicolaas Van
Plate Gary
Atr Equipment Industries Limited
Gierczak Eugene J. A.
Hattem Nicolaas Van
Plate Gary
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