method and device for the manufacture of during its use in relatively extreme thermal conditions resistant containers, for example bottles of polyethylene terephthalate.

摘要

The invention consists in moulding the body as a single part from a preform (1) made from amorphous polyethylene terephthalate (PET), heated at least to the softening point of the PET, in a cooled mould (5 to 40 DEG C) in order to form an intermediate container (11) of larger volume than the container to be obtained; then in heating the body of this intermediate container to 160-240 DEG C for 1 to 5 min at the same time as the neck (2) is heated, then undergoes a controlled cooling in order to obtain an intermediate container (15) having a narrowed body (16) and crystallised neck (2a); then in moulding it a second time to its final dimensions, for 2 to 6 s, in order to obtain a heat-resistant final container (22). …IMAGE…