Fiber reinforced synthetic material wheel

Details Fiber reinforced synthetic material wheel Fiber reinforced synthetic material wheel

B - Operations, Transporting

29

C

18/1132, 18/951

B29C 70/08 (2006.01) B29D 99/00 (2010.01) B29C 70/20 (2006.01) B29C 70/34 (2006.01) B60B 5/02 (2006.01)

Patent

CA 1196463

26 ABSTRACT OF THE DISCLOSURE A fibre-reinforced synthetic material automotive vehicle road wheel is formed by compression molding a pre- form for the wheel which comprises: a substantially planar spider portion comprising sheet molding compound comprising randomly oriented fibre reinforced resin, substantially all of which fibre is from 0.5 to 2 inches in length, a first tubular section comprising fibre reinforced resin sheet surrounding said spider portion about an axis substan- tially normal to the plane of said spider portion, and a second tubular section surrounding and substantially coax- ial with said first tubular section comprising fibre reinforced resin sheet, said fibre reinforced resin sheet of said first and second tubular sections preferably comprising random, chopped fibre of about 0.5 to 2 inches length and continuous fibre in a ratio of about from 1:1 to 1:4, respectively. The compression molding is effected at a temperature of about from 275° to 325°F, a pressure of about from 700 to 1500 psi and for a time of about from 3 to 6 minutes.

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