Method and apparatus for moulding plastic

Details Method and apparatus for moulding plastic Method and apparatus for moulding plastic

B - Operations, Transporting

29

C

B29C 45/46 (2006.01) B29C 45/16 (2006.01) B29C 45/17 (2006.01) B29C 45/53 (2006.01) B29C 49/20 (2006.01)

Patent

CA 2247243

A method and an apparatus for moulding plastic, and a plastic product produced with the method. The plastic material to be moulded is supplied to an injection space (7), and the apparatus comprises means for compressing the plastic material into a shape determined by the mould (16). The material is supplied to the injection space (7) by means of at least one conical inner stator (1) and at least one conical rotor (2) provided rotatably outside the stator. The injection press can thus be provided with a short and simple structure. When the material is supplied via a substantially tubular injection space (7), it is possible to provide a fibre-oriented plastic product produced by means of a mould.

L'invention concerne un procédé et un appareil de moulage de plastique et un article en plastique produit par ce procédé. La matière plastique à mouler est introduite dans l'espace d'injection (7) et l'appareil comprend des moyens pour comprimer la matière plastique afin de lui conférer une forme déterminée par le moule (16). La matière est acheminée dans l'espace d'injection (7) par au moins un stator conique interne (1) et au moins un rotor conique (2) externe au stator. La presse d'injection peut ainsi constituer une structure courte et simple. Lorsque la matière est amenée par un espace d'injection sensiblement tubulaire (7), il est possible de réaliser, dans le moule, un article en matière plastique avec des fibres orientées.

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