Plastic article or earthenware shaping or treating: apparatus – Continuous filament forming or film casting means with...
Patent
1989-06-08
1990-06-05
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Continuous filament forming or film casting means with...
2642093, 425 721, 425325, B29C 5526
Patent
active
049310038
ABSTRACT:
Apparatus for extending film tube from high density polyethylene biaxially oriented in longitudinal or machine direction as well as in cross machine diameter-increasing direction, and for joining extruded closure strip carried helically on one wall of the tube correspondingly stretched as a result of the biaxial stretching to which the film of the tube is stretched. The closure-strip-carrying, biaxially oriented tube is adapted to be converted into a ribbon sheet form with the closure strip extending as individual closure strip sections across the ribbon sheet form at longitudinally spaced intervals, and adapted for making bags.
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Chiesa Richard L.
Minigrip Inc.
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