Process for producing biaxially oriented nylon film
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United States of America Patent
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Mar 10, 1992
Grant Date -
N/A
app pub date -
Mar 9, 1990
filing date -
Mar 10, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to processes for producing biaxially oriented single-layered and multilayered films. The biaxially oriented single-layered film receives stresses in the range of 500 kg/cm.sup.2 to 1500 kg/cm.sup.2 each in the machine and transverse directions of the film. The multilayered film receives stresses in the range of 300 kg/cm.sup.2 to 1250 kg/cm.sup.2 each in the machine and transverse directions of the film. Thus, the molding stability in biaxial orientation of a nylon film is improved and the thickness accuracy of a resulting film is improved.
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