| 摘要 |
PURPOSE:To obtain a biaxially oriented poly-p-phenylenesulfide film, which has favorable slip properties and a few bulking projections and insulation defects, by a structure wherein the film contains the specified weight of inactive inorganic particles and has the internal haze per unit thickness and external haze of specified values. CONSTITUTION:The film concerned is a biaxially oriented poly-p- phenylenesulfide film, which contains 0.3-1.5wt.% of inactive inorganic particles and the internal haze per unit thickness of which is 1-3%/mum, and the external haze of which is 5-20%. If the content of the inactive inorganic particle is below 0.3wt.%, the slip properties of the film become poor. If said content exceeds 1.5wt.% insulation defect increases. If the internal haze per unit thickness is below 1%/mum, the slip properties of the film become poor. If said internal haze exceeds 3%/mum, insulation defect increase. If the external haze is below 5%, the slip properties become poor. If said external haze exceeds 20%, the mechanical characteristics of the film become inferior and brittle. |
