| 摘要 |
PROBLEM TO BE SOLVED: To create a delamination function comparable to that of a delamination bottle formed by direct blow molding, in a biaxial stretch blow-molded container formed by layered preforming through injection molding using multiple nozzles.SOLUTION: A biaxial stretch blow-molded container comprises: an outer later that forms an outer shell body; and an inner layer that is layered detachably onto the inside of the outer layer and that forms a contained body. The inner layer is formed to be thin so that the contained body can be deformed, by reducing interior pressure, in a manner that reduces volume in a deflated form. The outer layer and the inner layer have a layered structure in which they are layered over a range of height extending from a prescribed height position in an opening tube section to the bottom end surface of a gate scar residually formed in the central section of a base surface wall of a base section. The outer layer and the inner layer are detached, with a layer boundary between the outer layer which is exposed to the outside at the bottom end surface of the gate scar and the inner layer as a point of origin. An air inlet hole is formed between the outer layer and the inner layer and is for introducing outside air. |
