B - Operations – Transporting – 65 – B
Patent
B - Operations, Transporting
65
B
B65B 51/10 (2006.01) B65B 51/30 (2006.01) B65B 61/10 (2006.01)
Patent
CA 2527266
A side sealing apparatus for a shrink packaging machine comprising closed loop temperature control of a heater for maintaining an optimum temperature for cutting and sealing two layers of thermoplastic film. The heater comprises a cable or cartridge heater with an internal thermocouple, and it is connected to an automatic temperature controller. The heater is mounted on the side sealer apparatus between two sets of top and bottom V-belts mounted around drive rolls and idler rolls. The V-belts provide nip pressure against the film in order to drive the film. In one embodiment, nip pressure is generated by nip rollers on the scrap side of the film, and by low friction belt support guides on the package side of the film. In another embodiment, the belt support guides are replaced with a series of upper and lower nip rollers, and adjustable toggle clamps provide adjustable pressure on the series of upper and lower nip rollers.
Gilbert John J.
James Frank A.
Lindberg Jeffrey C.
Gilbert John J.
James Frank A.
Lindberg Jeffrey C.
Robic
LandOfFree
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