Apparatus for applying transverse weld seams to superposed webs

Details Apparatus for applying transverse weld seams to superposed webs Apparatus for applying transverse weld seams to superposed webs

1979-03-13

1981-11-17

Coan, James F.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

1565835, 493204, 493205, 493206, B31B 2360

Patent

active

043008933

ABSTRACT:
In bag-making apparatus, superposed plastics film layers of a travelling web are welded transversely along a processing path by pairs of welding jaws carried by chains to form bags which are severed from the web. At the end of or beyond the processing path, holding bars carried by the chains or by further chains parallel thereto engage the bags upstream of the weld seams and transfer them to take-off devices for stacking purposes.

REFERENCES:
patent: 2720246 (1955-10-01), Piazze
patent: 3075678 (1963-01-01), Huck
patent: 3373664 (1968-03-01), Brockmuller
patent: 3390042 (1968-06-01), Van Der Meulen
patent: 3526169 (1970-09-01), Levenson, Jr.
patent: 3553059 (1971-01-01), Stohlquist
patent: 4176000 (1979-11-01), Achelpohl et al.

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