Device for welding and parting thermoplastic foils

Details Device for welding and parting thermoplastic foils Device for welding and parting thermoplastic foils

1974-09-26

1976-09-28

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With cutting, punching, piercing, severing, or tearing

53 39, 156251, 156289, 219243, B32B 3118, H05B 100

Patent

active

039829910

ABSTRACT:
Device for welding and parting thermoplastic foils to form bags or the like, having a pair of heated opposing tools arranged to close against foils introduced between them. The foils are welded and parted along a compression line formed between a compression edge of one tool and a hard, wear-resistant, but resilient surface of the opposing tool.

REFERENCES:
patent: 2805973 (1957-09-01), Klasing et al.
patent: 3033257 (1962-05-01), Weber
patent: 3035381 (1962-05-01), Hosso
patent: 3236714 (1966-02-01), Traut
patent: 3409494 (1968-11-01), Korzinek
patent: 3415704 (1968-10-01), Bate
patent: 3457132 (1969-07-01), Tuma
patent: 3551259 (1970-12-01), Schwarzkopf
patent: 3593000 (1971-07-01), Forma

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