| 摘要 |
A biaxially stretched molded bottle is forcibly cooled by having its outer surface contacted with a cooling fluid such as cold water or gas to avoid its deformation by the heat of a liquid poured into the bottole and elution by such heat of any constituent of the material from which it is molded, when the bottle is a molded product of a saturated polyester resin, particularly polyethylene terephthalate, which has poor heat resistance like bottles of other synthetic resins, and is filled with the liquid which is heated to a high temperature for sterilization purpose only when it is filled into such a bottle and which is allowed to return to room temperature or cooled. When the liquid is poured into the bottle through its open neck, the cooling fluid supplied for cooling the bottle is prevented from flowing into the bottle through its open neck and mixing impurities into the liquid in the bottle. Moreover, an structural improvement has been introduced to avoid any interaction of thrust between the neck of the bottle and the seal covers brought into contact therewith in order to prevent thermal deformation of the neck of the bottle which is difficult to cool with the cooling fluid. |
