| 摘要 |
A container which has a body portion, a neck portion and a radially outwardly extending flange intermediate and integral with the body and neck portions is blow-molded in a mold which has at least two mold elements one of which is mounted on the other for displacement in the axial direction of the mold. The mold elements have chambers which substantially conform in shape to those of the body and the neck portions of the container, the mold elements together defining an annular recess in which an intermediate portion is formed during the blow-molding operation, such portion having a pair of radially outwardly extending sections, and a connecting section extending between radially outward marginal portions of the radial sections. After the blow-molding operation, while the material in the mold is still in a flowable state, the mold sections are displaced relative to one another to press the radial sections toward and against one another to fuse the same into a unitary flange having an axial thickness substantially twice that of the neck and body portions. A lid of the container has an external wall which surrounds the neck portion and has an additional flange, and a ring-shaped connecting element urges the flange and the additional flange toward one another in the axial direction of the container to sealingly contact a sealing ring with the lid and the neck portion, respectively.
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