| 摘要 |
PROBLEM TO BE SOLVED: To prepare the subject sheet having excellent dimensional stability in drying and printing processes in the production process for releasing sheets or the like, and useful as a separate film for film tacking or the like by suppressing the rate of dimensional change under a heated load. SOLUTION: When a temperature is elevated in the range of 25-70 deg.C at the rate of 5 deg.C/min under a load of 80 g/4 mm-width, the rate of dimensional change under the heated load of the subject sheet in a flowing direction is less than 1%. Further, preferably this film is made of a polypropylene resin having a heptane index of 97% or more, and has a crystallinity of the film of 60% or more and a thickness of the film of 30μm or more, and, for example, a crystalline polypropylene resin is used as the raw material.
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