| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a film with a gas barrier function as a best suited packaging material which shows outstanding transparency and flexibility and further, does not use a causatic agent detrimental to environments. SOLUTION: This gas barrier film is characterized in that an anchor coat film composed mainly of a highly alkali-resistant resin, an alkali metal polysilicate expressed by M2O/nSiO2 (M is lithium or a plurality of alkali metals containing lithium and (n) is within the range of 1-20 in terms of molar ratio) and a gas harrier coating film composed mainly of a water-soluble polymer or/and a nitrogen compound, laminated on one of the faces or both faces of a base material formed of a plastic material.</p> |
