Rotary film sealing and severing head for thermoplastics

Details Rotary film sealing and severing head for thermoplastics Rotary film sealing and severing head for thermoplastics

B - Operations, Transporting

65

B

156/26, 164/66

B65B 51/10 (2006.01) B29C 65/00 (2006.01) B29C 65/18 (2006.01) B29C 65/74 (2006.01) B65B 51/30 (2006.01) B65B 61/06 (2006.01)

Patent

CA 1317538

ABSTRACT OF THE DISCLOSURE A rotary film sealing and severing device for use with thermoplastic film for forming packages. The device includes a rotating anvil assembly and a counter-rotating film cutting assembly having a heated sealing and cutting knife. First and second liquid cooled clamping bars on either side of the knife hold the layers of film together while the film is being sealed and cut. Cooling the clamping bars prevents the film from adhering to the clamps and causes the layers of film to quickly fuse together and allows high speed operation by preventing separation of layers of film due to slow cooling.

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