Heat sealing member for making contoured heat seals

Details Heat sealing member for making contoured heat seals Heat sealing member for making contoured heat seals

1992-01-08

1992-09-22

Reynolds, Bruce A.

Electric heating

Heating devices

Combined with pressure application means

219542, 1565832, 338316, B32B 3118, H05B 100

Patent

active

051499436

ABSTRACT:
The heat sealing wire of an impulse heat sealer is held against an operating face of a support bar by an insulating fabric which is draped over the wire and secured in a slot formed in the support bar. The securing drape of fabric allows unrestricted expansion and contraction of the hot wire. Also if the slot lies in a curved plane which extends perpendicular to the plane of the support bar operating face, the drape of insulating fabric and consequently the sealing wire follow the same curve so the heat sealer can make seals of a non-linear configuration.

REFERENCES:
patent: 2904100 (1959-09-01), Fener
patent: 3015601 (1962-01-01), Fener
patent: 3166459 (1965-01-01), Imhof
patent: 3334005 (1967-08-01), Fener
patent: 3496049 (1970-02-01), Anderson
patent: 3620884 (1971-11-01), Peterson
patent: 3624349 (1971-11-01), Mayer
patent: 3916148 (1975-10-01), La Fleur
patent: 3948720 (1976-04-01), Reil
patent: 3982991 (1976-09-01), Hamm et al.
Service Manual for the Vertrod Thermal Impulse Heat Sealer, Vertrod Corp. 2037 Utica Ave., Brooklyn, NY 11234, Feb. 1973.

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