Method and apparatus for producing molded plastic articles

Details Method and apparatus for producing molded plastic articles Method and apparatus for producing molded plastic articles

B - Operations, Transporting

29

C

18/1103

B29C 41/46 (2006.01) B29C 33/26 (2006.01) B29C 33/34 (2006.01) B29C 41/18 (2006.01) B29C 41/40 (2006.01) B29C 33/04 (2006.01) B29C 33/46 (2006.01) B29C 35/02 (2006.01) B29C 35/04 (2006.01)

Patent

CA 1151830

ABSTRACT OF THE DISCLOSURE An apparatus and process for forming molded articles from particulate plastic material. A hollow heat-conductive male mold is surrounded with particulate plastic material. Heat is applied to the interior of the mold until the temperature of the outer surface is above the fusion temperature and below the melting temperature of the particulate plastic material. This temperature is maintained until an article of desired thickness is formed. Thereafter, loose particulate material is removed from the outer surface of the molded article and heat is again applied to the interior of the mold so as to cause the outer surface of the molded article to become smoother. Finally, the article and mold are cooled and the article is removed from the mold.

338096

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