| 摘要 |
<p>PURPOSE:To permit the thickness of each layer of a laminated film to be readily measured by dipping the laminated film in specific liquids to dissolve the saponified substance layer. CONSTITUTION:The laminated film, which comprises a polyamide layer and a saponified ethylene-vinyl acetate copolymer layer having an ethylene content of 25-60mol% and a saponification degree of more than 90%, is dipped in the hot water at a temperature of more than 85 deg.C for 5-60min, and then dipped in monohydric alcohol at a temperature of 40-70 deg.C for 5-60min in order to dissolve the saponified substance layer for measuring the thickness of each layer.</p> |
