Machine for compression band packaging

Details Machine for compression band packaging Machine for compression band packaging

1980-03-17

1982-07-27

Sipos, John

Package making

With contents treating

Reshaping

53234, 53553, 53586, B65B 1130, B65B 1320

Patent

active

043410561

ABSTRACT:
Packs of product move along a defined path, compressed in the grip of carrier jaws. A pair of webs of thermoplastic sheet material move towards said path from opposite sides thereof and are joined at a heat-fused seam to form an effective continuous strip across said path and into which a pair of carrier jaws moves with its pack. Pressure jaws converge just behind the carrier jaws to form the strip into a loop around the carrier jaws and produce two parallel, slightly spaced heat-fused seams between which the webs are severed and one of which connects the ends of said loop to form a band around the carrier jaws while the other connects the webs into a strip for formation of the next band. Until the band-completing seam has cooled, the carrier jaws keep the pack compressed enough to prevent seam rupturing tension on the band, then diverge enough to tension the band slightly, whereupon band and pack, in unison, are slid endwise out of engagement with the carrier jaws. The two parallel fused seams and the cut between them are produced simultaneously by a single strip-like electrically heated element.

REFERENCES:
patent: 1059621 (1913-04-01), Livingston
patent: 1885910 (1932-11-01), Gwinn
patent: 2005846 (1935-06-01), Parsons
patent: 2026284 (1935-12-01), Metternich
patent: 2179264 (1939-11-01), Lobasso
patent: 2504993 (1950-04-01), Lobasso
patent: 2568260 (1951-09-01), Spagnoli
patent: 2954655 (1960-10-01), Seragnoli
patent: 3181956 (1965-05-01), Clark
patent: 3191356 (1965-06-01), Zelnick
patent: 3551260 (1970-12-01), Catherwood
patent: 3564810 (1971-02-01), Faletti
patent: 3638394 (1972-02-01), Winokur
patent: 4028866 (1977-06-01), Langen

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