B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/682
B29C 45/16 (2006.01)
Patent
CA 1048721
ABSTRACT OF THE DISCLOSURE The invention relates to a method of and apparatus for the manufacture of articles, for example of imitation tortoise-shell, by injection moulding, in which local masses of at least one material are embedded from place to place in at least one other material, said materials being respectively each delivered by a separate plastification unit and terminating at an injection mould through a single common discharge channel, said method comprising the steps of de- livering said materials in continuous and simultaneous streams by means of said plastification units; breaking-up each con- tinuous stream of material into a series of measured quantities of said material, the quantities of one of the streams being intercalated with the quantities of the other stream; and successively injecting each measured quantity into said mould while causing them to penetrate into each other. The in- jection of the materials into the mould is preferably effected transversely to the plane of movement of the materials. The apparatus for carrying this method into effect comprises a plurality of plastification units, each for a pre-determined material, these units being coupled to a rotating distributor and a single discharge channel in communication with the mould and with several groups of channels formed in said distributor.
209704
Billion S.a.
Na
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