ASTM D 2230 - 96 (Reapproved 2012) Standard Test Method for Rubber Property - Extrudability of Unvulcanized Compounds

Current edition approved May 1, 2012. Published May 2012. Originally approved in 1963. Last previous edition approved in 2007 as D2230 – 96 (2007). — 5 p.
This test method covers the determination of the extrudability of unvulcanized SBR and NBR rubber compounds through a screw-type extruder equipped with ASTM Extrusion Die, Garvey type. This test method is designed to allow the observation of the appearance and contours of the extrusion. Rating systems are provided along with recipes for compounds of known extrusion characteristics. The utility of the test method for evaluating rubbers or compounding materials otherthan those listed has not been established. Since extrusion machines differ among laboratories, the procedure includes techniques that minimize differences between machines.