Polyester film for high sensitive thermal mimeorgraph stencil paper
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United States of America Patent
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app pub date -
Jun 15, 2005
filing date -
Dec 26, 2002
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Abandoned
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Abstract
The present invention relates to a polyester film for high sensitive thermal mimeograph stencil paper, which is a biaxially stretched polyester film comprising a composition of three or more types of polyester and having a thickness of 1.0 to 7.0 .mu.m, the Young's modulus of said film being not less than 3,000 MPa, and the major dispersion temperature E''(t) of its dynamic viscoelasticity-temperature characteristics as determined by the dynamic viscoelasticity method being 60 to 75.degree. C. This film excels in perforating sensitivity and is capable of providing high resolution in printing, minimized plate distortion and prolonged plate life.
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