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Excellent thermoplastic resin film and method of manufacturing the same thickness uniformity
Excellent thermoplastic resin film and method of manufacturing the same thickness uniformity
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机译:优异的热塑性树脂薄膜及其厚度均匀性的制造方法
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摘要
PURPOSE: To obtain a thermoplastic resin film not having thickness irregularity having a peculiar cycle and extremely high in thickness uniformity by separating the thickness irregularity of the film by the generation cause thereof to eliminate the same. ;CONSTITUTION: A thermoplastic resin film excellent in thickness uniformity is characterized by that the thickness irregularity in the longitudinal direction of the film is 5% or less and the ratio Pw1/PwT of the spectrum intensity sum Pw1 in a wavenumber of 0.015-0.45 (1/m) when the waveform of the thickness irregularity is subjected to Fourier analysis to the spectrum intensity sum Pw T in a total wavenumber and is 0.2 or less.;COPYRIGHT: (C)1996,JPO
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