| 摘要 |
<p>PURPOSE: To obtain a multilayered structure having excellent barrier characteristics against an oxygen, excellent optical characteristics, impact resistance and a service temperature sufficient for charging at the time of heating by forming at least two layers of intermediately good gas barrier polyglutarimide polymer and forming a polymer layer having relatively high gas permeability in the layer therebetween. CONSTITUTION: The multilayer structure is formed by alternately laminating an intermediate good gas barrier polymer-inserted glutarimide polymer and gas-permeable polymer. This alternate array of the barrier polymer and the permeable polymer is repeated many times as needed or as desired. And, as more gas permeable polymer, for example, polyethylene terephthalate, polybutylene terephthalate, nylon 6, nylon 6.6, or poly(bisphenol A carbonate) is used.</p> |
