Apparatus for making bags

Details Apparatus for making bags Apparatus for making bags

1986-09-03

1988-03-29

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493203, 493207, 493209, 83614, 156515, F16H 5548

Patent

active

047340886

ABSTRACT:
Apparatus for severing bags from a two-ply web of thermoplastic material. The apparatus includes web guide rollers defining a nip, and a plurality of peripheral grooves in the guide rollers in which upper and lower air directing tubes are positioned to guide a web as it passes downstream of the feed rollers. A continuously transversely moving severing knife is provided downstream of the feed rollers and below the plane defined by the moving web. A pair of welding jaws are provided adjacent the cutting knife to grip the web in a plane below the web movement plane to weld the plies of the web together and to deflect the web into position for providing a transverse cut therein by means of the severing knife. A pivot lever is provided to pivot downstream ends of the lower air directing tubes in a downward direction to prevent interference between the downwardly deflected web and the downstream ends of the air directing tubes. A set of clamping jaws is provided on the opposite side of the severing knife from the welding jaws in order to securely hold the web during the cutting operation.

REFERENCES:
patent: 3553406 (1971-01-01), Kugler
patent: 3733951 (1973-05-01), Fujimoto
patent: 4230029 (1980-10-01), Schott, Jr.
patent: 4518378 (1985-05-01), Schulze et al.
patent: 4613320 (1986-09-01), Lerner

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