| 摘要 |
PURPOSE:To improve easily unsealable properties and shelf stability of a content, make the same inexpensive and utilize the same for the fields of various kinds of foodstuffs, pharmaceuticals and non-foodstuffs by forming a laminate composed of a copolymer saponification layer in which the degree of saponification of ethylene content and vinyl ester component are controlled within the specified range and an EVA wax layer. CONSTITUTION:A laminate is composed of an ethylene - vinyl ester copolymer saponification A layer containing ethylene of 20-65mol% and provided with the saponification degree of 90mol% or more, and a composition B layer composed of an ethylene - hydrochloric acid vinyl ester copolymer or an ethylene unsaturated carboxylic acid ester copolymer, a viscosity imparting agent and wax. The A layer can be two or more vinyl ester copolymer saponification materials containing different contents of ethylene. The materials in which the contents of ethylene and the degree of vinyl ester being in the range similar to above-mentioned are laminated in a plurality of layers. |
