Package making – Methods – Applying a partial cover
Patent
1980-12-11
1982-06-29
Sipos, John
Package making
Methods
Applying a partial cover
53465, 53588, B65B 1304
Patent
active
043366791
ABSTRACT:
A process and apparatus for applying stretchable plastic film to loads for containment of the loads using two connected rollers driven by the film web so that the rollers are driven at different speeds to elongate the plastic film beyond its yield point and wrapping the elongated film after it has been stretched past its yield point around a rotating load. A roller can be added to the apparatus to increase the set time for the elongated film after it is stretched by the connected rollers. In addition, a web narrowing device may be placed upstream or downstream from the apparatus to reduce the hazard of edge tear under high elongation forces.
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Lancaster Patrick R.
Lancaster William G.
Lantech Inc.
Sipos John
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