Method and device for forming objects by injecting...

Details Method and device for forming objects by injecting... Method and device for forming objects by injecting...

B - Operations, Transporting

29

C

18/710

B29C 45/73 (2006.01)

Patent

CA 1254361

ABSTRACT OF THE DISCLOSURE: A method and a device for forming objects by injecting thermoplastic materials. When performing the method for forming objects by injecting thermoplastics into a mould, the melt of thermoplastics is injected into a heated mould, heated over the temperature of a glass tran- sition of amorphous polymers or over the temperature of melting of semicrystallic polymers. The mould is heated by means of a heating medium, which is supplied into the space surrounding the forming space; the temperature con- trolling medium heats the forming surface before the injec- tion, and cools it down after the mould has been filled up. The apparatus for performing this method comprises espe- cially an adapted mould, the forming space of which is surrounded by forming walls, represented especially by thermally conductive foils, around which a temperature controlling space is made, being connected to a source of temperature controlling liquid.

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