Process for heat treatment of the body of a preform or of an int

Details Process for heat treatment of the body of a preform or of an int Process for heat treatment of the body of a preform or of an int

1997-07-25

2000-09-05

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Differential temperature conditioning

264454, 264458, 425526, 4251744, B29C 4968

Patent

active

061138401

ABSTRACT:
The invention relates to the thermal treatment of the body (2) of a preform (1) or of an intermediate container made of a thermoplastic material during a process for manufacture of the container, such as a flask or bottle, in particular by blowing or stretching-blowing, the entirety of the body (2) of the preform being heated to a temperature greater than the softening temperature of the material, at least one longitudinal portion (13) of the body (2) of the preform in rotation on itself being heated to a temperature greater than that of the rest (14) of the body, thereby making it possible to produce a finished container incorporating a body having a complex shape.

REFERENCES:
patent: 3775524 (1973-11-01), Seefluth
patent: 3950459 (1976-04-01), Seefluth
patent: 4147487 (1979-04-01), Dickson et al.
patent: 4151249 (1979-04-01), Lee
patent: 4657502 (1987-04-01), Rydmann
patent: 4928835 (1990-05-01), Collette et al.
patent: 5229042 (1993-07-01), Denis et al.
patent: 5256341 (1993-10-01), Denis et al.
patent: 5292243 (1994-03-01), Gibbemeyer
patent: 5681521 (1997-10-01), Emmer et al.
patent: 5853775 (1998-12-01), Oas et al.

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