BIAXIALLY STRETCHED NYLON FILM FOR COLD MOLDING, LAMINATE FILM, AND MOLDED BODY
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United States of America Patent
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Issued Date -
Apr 24, 2014
app pub date -
Jul 12, 2012
filing date -
Jul 15, 2011
priority date (Note) -
Abandoned
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Abstract
In a biaxially oriented nylon film for cold forming, respective tensile stresses σ0.5 in four directions of an MD direction, a TD direction, a 45-degree direction and a 135-degree direction at a time when a strain is 0.5 are each in a range from 120 MPa to 240 MPa in a stress-strain curve obtained through a tensile test conducted on the film under conditions comprising a sample width of 15 mm, a distance between gauge points of 50 mm and a tensile speed of 100 mm/min, and a ratio σmax/σmin between a maximum stress σmax and a minimum stress σmin of the stresses in the four directions at the time when the strain is 0.5 is 1.6 or less.
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