(scrap grinder) n. A machine for cutting waste material such as sprues, runners, excess parison material, trim scarp from extrusion and thermoforming, and rejected parts into particles that can be reprocessed. The most common type of granulator is comprised of several thick knives bolted to a heavy cylindrical core, parallel to the core's axis, which is also its axis of rapid rotation. The rotating knives graze stationary knives mounted in the machine's housing, given an action that combines impact with shearing. A screen placed in the discharge opening controls the final particle size.
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© 2007 Springer-Verlag
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(2007). Granulator. In: Gooch, J.W. (eds) Encyclopedic Dictionary of Polymers. Springer, New York, NY. https://doi.org/10.1007/978-0-387-30160-0_5525
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DOI: https://doi.org/10.1007/978-0-387-30160-0_5525
Publisher Name: Springer, New York, NY
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