| 摘要 |
<p>PURPOSE:To provide a manufacture of laminated wrapping material having no risks of generating cracks on a thin film and spoiling a gas barrier property at the time of laminating a sheet onto another sheet, wherein the former is formed of a thin film of an inorganic or metallic compound having a good gas barrier property. CONSTITUTION:On one surface of a polyethyleneterephthalate film, the evaporated layer of silicon dioxide is formed by a method of vacuum evaporation and, on the evaporated layer, a heat buffering layer consisting of a polyethylene terephthalate film is laminated without heating the wrapping material, following this, polyethylene is extruded on the heat buffering layer to coat thereover, to thereby form a sealant layer.</p> |
