Milling, two-roll

The grinding of PU foam wastes is realised with cryogenic mills, ball mills, two roll mills, solid state extrusion, pellet mills. A very efficient pulverisation process by using a two roll mill was commercialised by Henecke [34]. Fine to very fine particles of PU foam wastes are obtained. 

Two-Roll Mills. Two-roll mills are key to making high quality PVC and rubber concentrates. These mills are easily cleaned. The batch process is ideal for producing small volumes thus, a variety of colors and materials can be run without much equipment down time. 

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