MEMBER EXECUTION METHOD FOR MOTOR VEHICLES

摘要

Road markers for vehicles are prepd. from granulated polypropylene mixed with wood-flour. This mixt. is introduced into an extruder at 180-200 deg.C barrel and 185-210 deg.C extruder head temp. The extrudate is deposited on a textile support, which is then pressed to form plates. The plates are cut to required dimensions, placed into moulds heated to 160-180 deg. C. Moulding is effected at 10 MPa pressure for 2-3 mins. for shaping and cooling, Another variant is to form sandwich prods. by moulding a number of plates together, during 2-3 mins. moulding time. A third variant consists of moulding a number of plates, which contain metal inserts introduced at 10 MPa pressure.