| 摘要 |
PROBLEM TO BE SOLVED: To obtain a film for packaging an alkaline material, excellent in water-solubility, chemical resistance and biodegradability. SOLUTION: This film for packaging the alkaline material is composed of a polyvinyl alcohol-based resin having >=1.8 mol% 1,2-glycol bond and 92-99.9 mol% saponification degree.
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