| 摘要 |
The present invention relates to a soft textured dimensionally stable microporous film comprising about 45 to about 60 %, by wt., filler, and a balance between a blend of linear low density polyethylene and high density polyethylene or other heat resistant polymer. The textured dimensionally stable microporous film is formed by extruding the formulation as a film, and orienting the film by passing through at least one set of intermesh gear rolls. The oriented film is annealed, reheated and, optionally, embossed to form the soft textured microporous film which is dimensionally stable at elevated temperatures.
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