Method for producing polyethylene terephthalate packing material
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United States of America Patent
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May 29, 1984
Issued Date -
N/A
app pub date -
Apr 28, 1982
filing date -
Nov 30, 1979
priority date (Note) -
Expired
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Abstract
A polyethylene terephthalate packing band is provided which is made of a polyethylene terephthalate resin having an intrinsic viscosity of 0.90 to 1.20 and has been longitudinally stretched to an overall draft of 3 to 6 times. There is also provided a packing band of the above construction in which the longitudinal orientation of the resin molecules has been randomized by embossing. There is further provided a method by which the above-mentioned packing band is efficiently manufactured.
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