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This paper presents scale up work was then performed on a 2.5i extruder with the RPVC powder.
A model called the Menges/Klenk has been shown be appropriate for RPVC. It works almost in reverse of the Maddock/Tadmor model, with the melt accumulating behind the flight rather than in front (Fig.
As a result, RPVC would not perform well on a barrier design using the principles of the Maddock/Tadmor model.
For RPVC extruders, the maximum screw speed is often set in the range of 25-35 ft/min peripheral speed, measured at the screw O.D.
The shallow feed depth or low compression ratio is also appropriate to the frictional coefficients of RPVC, which cause it to feed well.
We are currently processing but not limited to: HDPE, MDPE, LDPE, EVA, Polypropylene, C-Flex [a non-vinyl option], FPVC, RPVC, TPO, TPR and TPEs encompassing a wide range of sizes, wall thicknesses, tolerances and durometers that can be coiled or cut to suit your requirements.
Many potential applications require the properties of engineering polymers such as FR-ABS, RPVC, mPPO, and PC.
Materials: FPVC, DEHP-free FPVC, HDPE, MDPE, LDPE, EVA, TPO, TPE, TPR, RPVC, C-Flex, polyurethanes.
In their Sheboygan, WI facility, Caeur OEM offers custom extrusion, including HDPE, LDPE, MDPE, PP, TPE, Urethane, FPVC, RPVC, EVA and PVC/ABS alloy materials.
processing materials such as RPVC, FPVC, PP, and TPE.
extruder running at 100 to 125 lb/hr) Polymer FPVC RPVC ABS HIPS PC PET Drawdown, % 15-30 4-10 15-25 15-30 15-30 20-40 Polymer PETG CAP LDPE MDPE PP Drawdown, % 30-100 25-30 25-30 25-30 25-40
Also single-screw extruders designed to process a variety of materials including RPVC and fluoropolymers.
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