Oscillating sealing wire assembly for wrapping machines

Details Oscillating sealing wire assembly for wrapping machines Oscillating sealing wire assembly for wrapping machines

1988-07-21

1989-05-30

Spruill, Robert L.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Presses or press platen structures, per se

53 77, 53373, 53550, 156466, 493193, 493470, B65B 5114, B65B 5126, B65B 906

Patent

active

048348309

ABSTRACT:
An oscillating sealing wire for high speed sealing of thermoplastic film. The sealing wire curved in the shape of a bow rocks back and forth across the moving surface of a thermoplastic film so the wire continuously presents a hot surface to the film. The film removes heat from the wire surface which touches the film. The oscillating wire continuously presents a new hot surface to the film to allow high speed movement of the film and still obtain a good seal.

REFERENCES:
patent: 2718915 (1955-09-01), Piazze
patent: 2741296 (1956-04-01), Collins
patent: 3454450 (1969-07-01), Tyrrell
patent: 3473288 (1969-10-01), Nakamura et al.
patent: 4084999 (1978-04-01), Rucker
patent: 4490962 (1985-01-01), Weis et al.

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