Manufacturing container or tube from paper; or other manufacturi – Container making – Pliable container
Patent
1985-11-01
1987-02-10
Larson, Lowell A.
Manufacturing container or tube from paper; or other manufacturi
Container making
Pliable container
493197, 493208, 493233, 493254, 493474, 1565831, 83349, 83668, 29124, 226175, B31B 2316
Patent
active
046420843
ABSTRACT:
A machine for making plastic bags, such as trash or garbage bags, includes a rotary sealing drum of variable diameter, the drum including one or more sealing bars for cross-sealing a flattened plastic film tube passing through the machine. A blanket tensioning system surrounds the drum and is adjustable to compensate for different drum diameters. The sealed film passes over a chill roll after leaving the drum-blanket assembly and is drawn over folding boards by pull rolls. The sealed and folded film is then perforated by a fly knife and is preferably also cut on the sides to produce a connected series of bags which may easily be separated from one another to make the bags suitable for easy dispensing packages. A variator assembly may also be provided to insure a proper skirt length between the cut-perforation and the bag seal.
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patent: 4500307 (1985-02-01), Bridgeman
Cooper, III John C.
Custom Machinery Design, Inc.
Larson Lowell A.
Terrell William E.
Wiviott Fred
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