Method and an istallation for manufacturing thermoplastic recept

Details Method and an istallation for manufacturing thermoplastic recept Method and an istallation for manufacturing thermoplastic recept

1996-06-28

1998-07-28

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including application of internal fluid pressure to hollow...

264530, 264906, 425526, 425533, 425538, B29C 4918

Patent

active

057859213

ABSTRACT:
The invention relates to manufacturing a receptacle (23) suitable for being subsequently subjected to severe temperature conditions without deforming significantly, in which an intermediate receptacle (2) is molded by blowing or by stretching-blowing a preform (1) whose body is heated to at least the softening temperature of the thermoplastic material, which intermediate receptacle possesses dimensions greater than those of the final receptacle (23) and from which a blank is produced having a hot-shrunk body of predetermined length greater than that of the body of the final receptacle (23) and from which the body of the final receptacle is molded or blow-molded with the exception of its bottom zone, the length of the receptacle having an unmolded bottom zone being substantially the same as the length of the final receptacle (23), and finally the body and its bottom zone are blow-molded to take up their final shapes and dimensions in order to obtain the final receptacle (23).

REFERENCES:
patent: 4584158 (1986-04-01), Nilsson et al.
patent: 5389332 (1995-02-01), Amari et al.
patent: 5540879 (1996-07-01), Orimoto et al.
patent: 5585065 (1996-12-01), Nakamaki et al.
patent: 5611987 (1997-03-01), Kato et al.

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