| 摘要 |
PCT No. PCT/FR95/00895 Sec. 371 Date Jan. 10, 1997 Sec. 102(e) Date Jan. 10, 1997 PCT Filed Jul. 5, 1995 PCT Pub. No. WO96/01729 PCT Pub. Date Jan. 25, 1996A machine for blow moulding or stretch-blow moulding a preform (5) in a mould (6), wherein an O-ring seal (20) is provided between the preform and the blow moulding nozzle (1). The seal is mounted on the nozzle and can be moved between two positions, i.e., a first position in which it is prevented from contacting the preform during the insertion of the nozzle into the preform, and a second position in which it forms the seal therebetween. Members (18, 21, 26, 27) are provided for moving the seal from the first to the second positions once the nozzle has been fully positioned within the preform.
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