Method for making, filling, and sealing sacks

Details Method for making, filling, and sealing sacks Method for making, filling, and sealing sacks

1992-07-13

1993-12-21

Coan, James F.

Package making

Methods

Forming a cover adjunct or application of a cover adjunct to...

531315, 53450, 53504, B65B 4342, B65B 4356, B65B 5704, B65B 326

Patent

active

052712060

ABSTRACT:
A method for repetitively making, filling and sealing sacks from a tubular web of thermoplastic material preferably provided with side folds, wherein, for each sack, the leading end of the tubular web is provided with a transverse weld, and from the tubular web a section constituting an open sack is cut off, and where the sack is then filled and the open side of the sack is closed by means of a transverse weld. To ensure that the filled sacks are always filled tight and full, during the filling of the sack, there is detected by means of a measurement pick-up to what level the sack is filled when filling with a certain quantity of filling material, and that in accordance with the filling level of the sack the length of the tubular web section forming the sack is adjusted.

REFERENCES:
patent: 4606174 (1986-08-01), Berg
patent: 4641486 (1987-02-01), Zannoni
patent: 4747252 (1988-05-01), Schulte
patent: 4784697 (1988-11-01), Bordini
patent: 4964259 (1990-10-01), Ylvisaker et al.

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