Skip-seal mechanism for packaging machine

Details Skip-seal mechanism for packaging machine Skip-seal mechanism for packaging machine

1978-02-09

1979-08-21

Culver, Horace M.

Package making

Progressively seamed cover web or web folds

53329, 53373, 1565831, B65B 902, B65B 5114, B65B 5116, B65B 5126

Patent

active

041648331

ABSTRACT:
A machine for heat sealing articles between two continuous webs of plastic material comprises two parallel synchronously driven shafts, each of which has a pair of wheels on it which are brought into pressure relationship for heat sealing. One shaft is mounted for yielding perpendicularly to its rotational axis and carries a cam follower disc. The follower disc is raised intermittently and the seal wheels are thereby separated, to relieve pressure and omit sealing, with a cam that is on the other shaft and is engaged periodically for rotation by means of a clutch.

REFERENCES:
patent: 1993442 (1935-03-01), Greven
patent: 3257257 (1966-06-01), Karsten et al.
patent: 3257939 (1966-06-01), McDermott
patent: 3484325 (1969-12-01), Pendleton
patent: 3522135 (1970-07-01), Page
patent: 3530027 (1970-09-01), Nuckols, Jr.
patent: 3553930 (1971-01-01), Anderson et al.
patent: 3846209 (1974-11-01), Howard
patent: 3850780 (1974-11-01), Crawford et al.
patent: 3909341 (1975-09-01), Moscovita

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