Method for welding the inner layers of multi-layer paper sacks

Details Method for welding the inner layers of multi-layer paper sacks Method for welding the inner layers of multi-layer paper sacks

B - Operations, Transporting

65

B

73/31, 226/67

B65B 7/00 (2006.01) B29C 65/14 (2006.01) B31B 19/64 (2006.01) B29C 65/00 (2006.01)

Patent

CA 1155096

Abstract For a method of welding multi-layer paper sacks with weldable inner surfaces, the outer layers are folded back from the weldable inner layer during welding. The welding energy reaches the inner layer directly. The welding process is substantially shortened in comparison with know methods, and both the production time and processing time with such paper sacks is reduced.

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