Application: The Test Roll can be used to test the following plastic materials and their related agents: PVC (Polyvinyl Chloride): Rigid PVC, Semi-Rigid PVC, Soft PVC PP (Polypropylene) PS (Polystyrene) ABS (Aerylonitrile-Butadiene-Styrene Copolymer) EVA (Ethylene-Vinyl Acetate Copolymer)The stabilizer can use the Test Roll to do Milling Test and also can be added with TiO2(Titanium Dioxide) to be mixed together and then works with the Aging Tester to do Static Stability Test. Specification:SPECIFICATIONS AND FUNCTIONS OF LAB MIXING MILL (UNIVERSAL JOINT TYPE)1. ROLLSize6" D X 15" W 8" D X 20" W Specification:Patented design of spiral drilled roll in order to achieve fast heating up.Material:High class alloy steel with composite structure and harden treatment.Surface treatment:Hard chrome plating, then grinding again to achieve 12 degree of fineness (Ra0.1μm). Design device for protection rolls cannot damage the roll surface.Hardness:HS74°±2Heating type:Thermal oilTemperature used:80oC- 200oC+1Bearing: Self-aligning double-row bearing, equipped with anti-collision and locating device to avoid damage on roll surface.Clearance range:Machine: 0 5mm, working condition: 0.1 5mm2. DRIVING SYSTEMUniversal jointtransmission system is installed in the case to ensure high safty. Double motors drive and the speed of roller is controlled separatelyby double frequency converter ( YASKAWA, Japan).3. OIL HEATING SYSTEMHeating piping and rotary joint install in the case, tidy appearance. Adopts oil circulation temperature controller (Max. 250), connects with mixing mill by flexible hose.4. SAFETY DEVICEDouble stopping devices: except normal stop switch, the front/rear sides of machine frame are equipped with knee-push safety brake system that the roller will reverse 1/4 when knee pushes safety brake, in order to ensure safety operation of staff.5. ELECTRIC CONTROLElectric control system is installed inside of machine, and operation panel is cantilever typ.6. GUARANTEE: 1 year