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Melt extrusion unit, 1987.

Melt extrusion unit, 1987.
4 0 c m
actual image size: 25cm x 32cm


This small-scale melt extrusion unit was built by Dr E Dyson of Bradford University in Yorkshire for teaching and demonstration purposes. Nylon and polypropylene filament samples can be produced in a range of sizes and densities by varying extrusion temperature, presure and stretch. The piston in the heated extrusion cylinder containing the polymer granules or rod, is driven by a screw ram worked by a variable-speed motor.

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© Science Museum / Science & Society Picture Library

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