Package making – Methods – Enclosing contents within progressively formed web means
Patent
1984-07-30
1986-07-15
Kazenske, E. R.
Package making
Methods
Enclosing contents within progressively formed web means
53477, 53551, 53554, 1565831, B65B 902, B65B 6504
Patent
active
045998507
ABSTRACT:
A packing machine for making filled and sealed bags from superposed wrapper sheets, has a pair of cooperating sealing rollers for providing longitudinal seams on the superposed wrapper sheets passed therebetween; a mechanism for rotating unidirectionally the sealing rollers in first and second consecutive steps for providing the longitudinal seams in two consecutive length portions, each corresponding to one-half of the predetermined length; a pair of cooperating sealing shoes movable towards and away from one another for assuming, respectively, a sealing position to provide a transverse seam on the superposed wrapper sheets and an idling position; and a mechanism for moving the sealing shoes, while in the sealing position, codirectionally with the travelling direction of the wrapper sheets during a period in which one of the two steps is performed and for moving the sealing shoes, while in the idling position, against the travelling direction during a period in which the other of the two steps is performed.
REFERENCES:
patent: 2982066 (1961-05-01), Thompson
patent: 3383269 (1968-05-01), Kopp
patent: 3776804 (1973-12-01), Monahan et al.
Folkerts Michael D.
Kazenske E. R.
SIG - Schweizerische Industrie-Gesellschaft
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