Method of and a machine for injection moulding of articles...

Details Method of and a machine for injection moulding of articles... Method of and a machine for injection moulding of articles...

B - Operations, Transporting

29

C

18/683, 18/714

B29C 45/16 (2006.01)

Patent

CA 1049722

ABSTRACT OF THE DISCLOSURE The present invention is concerned with a process and a machine for the production by injection welding of articles of large size and/or complex structures having, at least locally, composite portions formed by the introduction of one of at least two materials of different compositions inside the other. The apparatus includes a mould having fixed and movable portions, at least two separate systems for supplying materials to be in- jected into the said mould, and at least two distribution valves for these materials, one of the valves being of multi-way type so as to cause a common discharge channel for material into the mould to communicate with either or both of the separate material-supply systems.

209917

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