abstract |
A gas permeable film having excellent gas permeability, low temperature heat sealability, and transparency is provided. A gas permeable film having a multilayer structure of two or more layers, having a moisture permeability (according to JIS Z0208, test temperature 40 ° C., test humidity 90%) of 10 g / m 2 · 24 h to 80 g / m 2 · 24 h. In the range, the heat seal strength at a heat seal temperature of 140 ° C. is in the range of 6 N / 15 mm to 50 N / 15 mm, the total haze is in the range of 0.1% to 10.0%, and the hole with the maximum diameter of 50 μm or more The gas permeable film which is 1 or less per 1 m2, and at least one layer of the multilayer structure contains a polymer having a structural unit derived from 4-methyl-1-pentene. [Selection figure] None |