| 摘要 |
PROBLEM TO BE SOLVED: To provide a synthetic resin bottle in which a transparent outer shell body is injection-molded using a bottle body, which is a blow molded article, as an insert material, and to provide a molding method of the synthetic resin bottle which can effectively suppress deformation of the bottle body due to a molten resin.SOLUTION: In a synthetic resin bottle 1 where a closed-end cylindrical transparent synthetic resin outer shell body 21 is injection-molded using an insert material as a bottle body 11, a molten resin forming the outer shell body 21 is filled by a measuring filling method in a state where cooling air is circulated and supplied into the bottle body 11, pressure rise in accordance with a dwelling step is avoided by adopting the measuring filling method, temperature rise of the bottle body 11 is suppressed by the cooling air, molten resin pressure rise in accordance with molten resin flow is suppressed by thickening a peripheral wall 24 of the outer shell body 21, and the levels of cooling by the cooling air and thickening of the peripheral wall 24 of the outer shell body 21 are set to a level where the bottle body 11 is not deformed by a molten resin pressure.SELECTED DRAWING: Figure 2 |
