| 摘要 |
<p>A multilayer structure, especially a multilayer film, for packaging alkaline, or caustic, compositions. The multilayer structure consists essentially of: (1) a first layer of an acid functional polymer that is soluble in aqueous alkaline medium, (2) a second layer of a partially hydrolyzed, thermoplastic PVOH, and, optionally, (3) a third layer of a fully hydrolyzed, thermoplastic PVOH. k</p> |
