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ROLF SOCIETR PER AZIONI
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ROLF SOCIETR PER AZIONI
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Publication of ES302886A1publicationCriticalpatent/ES302886A1/en
A refinement in injection molds for the production of rubber articles or plastic materials, consisting of: a) a lower part provided with grooves on the two faces around each mold cavity: b) a thin upper part provided with a groove in the lower face in correspondence with the aforementioned and with pouring holes in the upper face; c) a bottomless part provided with a thin lower molding projecting towards the interior of the loading chamber; d) an injection piston that acid in said bottomless part; characterized in that the injection piston has the periphery of the soft metal underside superimposed and has the profile identical to that of the bottom molding of the bottomless part with which it fits exactly at the end of the injection. (Machine-translation by Google Translate, not legally binding)
ES0302886A1963-08-021964-07-29A perfection in the injection molds. (Machine-translation by Google Translate, not legally binding)
ExpiredES302886A1
(en)
A process of molding by injection of thermoplastic resins, especially of polyamides and device for its application (Machine-translation by Google Translate, not legally binding)