| 摘要 |
<p>PURPOSE:To improve packing workability and to keep the freshness of garden stuff and cut flowers, by coating a film with zeolite and a highly water- absorbable resin. CONSTITUTION:A film to be used is composed of polystyrene, polypropylene, polyethylene, polyester and polyvinyl chloride and polystyrene having proper steam permeability and gas permeability as well as stiffness is especially pref. Zeolite to be used may be either one of natural and synthetic ones and is hydrated aluminosilicate represented by general formula MeOAl2O3mSiO2nH2O (Me; metal ion). As a highly ater-absorbable resin, there are polyacrylic acid type, starch-acrylate type, vinyl acetate type or maleic acid copolymer type resins but polyacrylate crosslinked compound being a polyacrylic acid highly water- absorbable polymer is especially pref. At the time of manufacturing, the film is coated with a dispersion prepared by dispersing zeolite and the highly water- absorbable resin in a solvent, for example, alcohol, acetic ester, methyl ethyl ketone or the like by a gravure printing press or a roll coater.</p> |
