| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing of a propylene resin film that has superior transparency, and also has small orientation. <P>SOLUTION: The method for manufacturing of the propylene resin film includes making a molten film made of a propylene resin which is extruded from a T-die stick to a cooling roll by a gas which blows off from an air chamber to be cooled to manufacture the propylene resin film, wherein the pressure of the gas in the air chamber is 5-100 (Pa), and the peripheral velocity of the cooling roll is 4-13 (m/min). In the method for manufacturing of the propylene resin film, the distance between a contact point in which the cooling roll and the molten film made of the propylene resin contact first and a T die lip outlet is 30-90 (mm). <P>COPYRIGHT: (C)2012,JPO&INPIT |
