METHOD OF MANUFACTURE OF LARGE THICK-WALLED PARTS FROM POLYPROPYLENE Russian patent published in 1999 - IPC

FIELD: manufacture of large thick-walled parts from polypropylene by automatic device. SUBSTANCE: method consists in pressing of layers on one another. Method is distinguished by the fact that polypropylene prior to loading into automatic device is mixed with powdery graphite-reinforced plastic based on artificial graphite in the following amounts of components, wt. %: polypropylene 88-92; the balance, graphite-reinforced plastic. Graphite-reinforced plastic contains, wt.%: graphite 75-90; the balance, polypropylene. EFFECT: higher quality of parts made of polypropylene, increased productivity, higher degree of automation of products process. 1 tbl