| 摘要 |
PROBLEM TO BE SOLVED: To provide a delamination container which can easily secure an airway for passing an air hole penetrating an outer layer body in a mouth through a space formed between an outer layer body and an intermediate layer peeled from the outer layer body.SOLUTION: A delamination container 101 is formed by biaxially stretching blow-molding a preform having a laminated structure of a resin layer forming an outer layer body 3, a resin layer forming an inner layer body 4, and a resin layer forming an intermediate layer 5 through coinjection molding. A mouth 1 has an air hole 6 penetrating the outer layer body 3, and a neck ring 7 which forms a part of the outer layer body 3 and projects in a flange shape on the side of a barrel part 2 of the air hole 6. The mouth 1 has a thickness removal part 9 formed on the resin layer forming the outer layer body 3 through the coinjection molding. The thickness removal part 9 has a lower side thickness removal part 9a formed as a recessed groove part which is recessed radially inside below the neck ring 7, and an upper side thickness removal part 9b extending toward the upper part from the lower side thickness removal part 9a, to at least the vicinity of the air hole 6.SELECTED DRAWING: Figure 2 |
