| 摘要 |
The process relates to the production of a container by blow- moulding a synthetic resin plastic tubular element against the walls of the hollow mould of a die, the blown container having an external extension which extends from its upper mouth, the extension having an internal channel, which was used for injecting air into the tubular element. The process involves the sealing of this channel by means of welding carried out along a line above the upper mouth of the body of the container before the injection of air has ceased so as to maintain the pressure inside the container at least equal to atmospheric pressure. <IMAGE> |
