| 摘要 |
<p>PURPOSE:To provide the subject film having improved mechanical strength and appearance and suitably used for especially maintaining the freshness of vegetables and fruits by laminating a monoaxially oriented thermoplastic resin film containing a freshness-retaining agent having a specific average particle size in a specified ratio to at least one surface of a biaxially oriented thermoplastic resin film. CONSTITUTION:A monoaxially oriented thermoplastic resin film containing 0.01-1wt.% of a freshness-retaining agent having an average-particle size of 0.1-50mum is laminated to at least one surface of a biaxially oriented thermoplastic resin film. The thermoplastic resins as raw materials for the biaxially oriented and monoaxially oriented thermoplastic resin films include polystyrene, polyolefins such as polyethylene and polypropylene, polyamides, polycarbonates and polyesters, and the homopolymer or copolymer of an alpha-olefin is preferable. The freshness-retaining agent is especially preferably the powder of zeolite, coral or marine products.</p> |
