| 摘要 |
PURPOSE:To contrive to produce at low cost and to reduce the release of acetaldehyde by a method wherein extrudate is produced by melting and extruding matrix resin mixed with specified substance in the form of parison so as to be biaxially stretched in order to give the resin biaxial stretching. CONSTITUTION:Resin constituent body is manufactured by melting and extruding matrix resin mixed with other resin, the gas barrier properties of which are more excellent than those of the matrix resin, and forming and biaxially stretching the extrudate. The resin mixed with the matrix resin is not compatible with the matrix resin and, at the same time, has the property of improving the physical characteristics by stretching. Thus, the realization of low production cost is contrived and acetaldehyde can be prevented from oozing outside after the forming of resin constituent body. |
