| 摘要 |
With respect to a double container of synthetic resin composed of an inner container and an outer container, the conventional problems, such as restraints on configuration and need to have an assembly step, are solved. As main means for solving the problems, there is provided a double container by direct blow molding method, comprising an outer layer and inner layer of synthetic resins nonadherent to each other and, interposed therebetween, an air space formed by separation due to a molding shrinkage difference between the outer layer and the inner layer at direct blow molding.
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