| 摘要 |
PURPOSE:To provide the syndiotactic polystyrenic biaxially oriented film, and more in detail to provide the syndiotactic polystyrenic biaxially oriented film excellent in transparency, excellent in the smoothness of the film surface, and good in handling characteristics without relating to the thickness of the film. CONSTITUTION:The syndiotactic polystyrenic biaxially oriented film is characterized by having the sum of its surface and inner hazes (per 10mu) of 10% or less, a three-dimensional surface roughness SDELTAa of 0.004-0.04 on at least one surface, and an air-passing rate of 900 sec or shorter. |
