EXTRUDATE QUALITY 80 PHR SILICA 2+1
The high silica containing stocks are also extremely difficult to get a good quality extrudate. There is extensive edge tearing and knotty surfaces. There is little die swell because of the high filler levels. With the process additive excellent surfaces were seen. The combination of temperature build up, lower torque, and better quality extrudate will allow the tire builder to produce a more uniform tread at a faster output.
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