Continuous draw tape bags

Details Continuous draw tape bags Continuous draw tape bags

1987-10-27

1989-02-07

Price, William

Special receptacle or package

For roll or reel

Concatenated articles

383 75, B65D 3328

Patent

active

048025828

ABSTRACT:
Draw tape bags are provided on a roll, preferably folded longitudinally with the hems containing the draw tapes extending beyond the body of the bags for smooth rolling. The bags are side sealed with perforations between bags for separation of the bags, and the hems containing the draw tapes are side welded so that the hemmed areas are substantially separated. The bag machine for making side sealed bags includes a side welding unit in line with the sealing unit so the sealing and perforating, and welding, are accomplished in one step. The side welding knife has a large radius and high temperature to effect a weld in the multiple layers and the thick draw tape.

REFERENCES:
patent: 3013597 (1961-12-01), Moran
patent: 3029853 (1962-04-01), Piazze
patent: 3196757 (1965-07-01), Samways
patent: 4021283 (1977-05-01), Weikert
patent: 4364490 (1982-12-01), Lang et al.
patent: 4558463 (1985-12-01), Boyd

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