Apparatus for injection molding articles composed of a material

Details Apparatus for injection molding articles composed of a material Apparatus for injection molding articles composed of a material

1974-09-23

1976-09-07

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

222135, B29F 112

Patent

active

039791700

ABSTRACT:
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 delivering said materials in continuous and simultaneous streams by means of said plastification units; breaking-up each continuous 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 injection 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.

REFERENCES:
patent: 2803041 (1957-08-01), Hill et al.
patent: 3690797 (1972-09-01), Garner
patent: 3809519 (1974-05-01), Garner

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