| 摘要 |
A fine crystalline material is fed to a pressure screw rotating in a casing and conveying the material under pressure to the outlet of the casing. The material is pressed through an extruder head rotating directly in front of the outlet and provided with a plurality of perforations which are bounded at one side with a projecting nose which cuts a predetermined quantity out of the pressure supplied material to issue in form of granules. Separate drives are provided for adjusting the rotations per minute of the pressure screw and the extruder head separately.
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