To obtain a thermoplastic resin sheet excellent in productivity and also quality and useful as an industrial material, a magnetic material or the like by applying pulse waveform voltages having a specific range of a repeated frequency to electrodes placed on a thermoplastic resin sheet to make the sheet adhere to a body of rotation.
The objective sheet is obtained by applying pulse waveform voltages having a repeated frequency from 200 Hz to 30 kHz and preferably having 0.1-10 μs of the half-width value of a pulse and 0.05-5 μs of a pulse rise time to electrodes (preferably wire electrodes or the like) placed on a thermoplastic resin sheet made of e.g. polyethylene terephthalate to make the sheet adhere to a body of rotation. The thermoplastic resin sheet preferably is produced by melting a thermoplastic resin having a melting specific resistance of 108-1012 Ω.cm and by extruding it as a melt sheet from a spinneret. The body of rotation preferably is a rotary cooling body on which the above sheet is cooled and solidified in an adhered state to the cooling body.
TSUNASHIMA KENJI
YOSHITAKE FUMINORI
YOROZU SHUNICHI
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