Container

Details Container Container

B - Operations, Transporting

29

C

18/535

B29C 49/12 (2006.01) B29C 49/64 (2006.01) B29C 49/58 (2006.01) B29C 61/02 (2006.01)

Patent

CA 1220605

ABSTRACT OF THE DISCLOSURE The invention relates to a method and a device for production of a temperature-stable, biaxially oriented container of thermoplastic material. In a first moulding stage a blank (40) is placed in a blow mould (12) after which a mandrel (15) extends the blank in its axial direction to a length exceeding the axial length of the future con- tainer. The length of the stretched material, in an axial section through the stretched blank, is then reduced at a predetermined temperature, and the reduction being made to a profile length sub- stantially agreeing with the profile length for corresponding mate- rial portions in an axial section through the future container. In a second moulding stage the stretched blank is expanded to abutment against the walls of the mould. The expansion takes place at a point in time for and/or at a speed allowing the reduction of the length of the stretched material to have time to be concluded before the mate- rial comes into contact with the walls of the mould. Fig. 1 is proposed for possible publication.

449061

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