Bag sealing bar

Details Bag sealing bar Bag sealing bar

1987-06-12

1988-09-06

Culver, Horace M.

Package making

Closing packages and filled receptacles

By means adapted to engage outturned seam of package cover

53551, 1565833, B65B 5130, B65B 5114, B65B 912

Patent

active

047683260

ABSTRACT:
A sealing bar for heat sealing a length of heat-sealable material, such as tubing, to form packages and the like. The sealing bar has a metal surface adapted for pressure engagement with the heat-sealable material for flattening it and heating it. A slot extends substantially through the bar, the slot being arranged to define the portion of the bar between the slot and the surface as a relatively thin resiliently flexible metal bridge. The bridge is engageable with a portion of the flattened heat-sealable material, such as a portion of tubing having a longitudinal seam or a gusset, thicker than other portions of the heat-sealable material and the bridge is adapted resiliently to yield on engagement with the thicker portion of the material.

REFERENCES:
patent: 3227597 (1966-01-01), Wilson
patent: 3578535 (1971-05-01), Gohlfennen
patent: 3752725 (1973-08-01), Freeman
patent: 3830681 (1974-08-01), Wilson
patent: 4024692 (1977-05-01), Young
patent: 4069643 (1978-01-01), Young
patent: 4082941 (1978-04-01), Sukow et al.
patent: 4115182 (1978-09-01), Wildmoser
patent: 4144003 (1979-03-01), Berkowitz
patent: 4353196 (1982-10-01), Beer
patent: 4546596 (1985-10-01), Cherney
patent: 4693058 (1987-09-01), Kovacs

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