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[SOLVED] - POWDER MIX COMPOUND DOES NOT FREELY FLOW INTO THE EXTRUDER

Possible Causes

  1. Hopper design is not suitable for powder feeding.

  2. The higher level of filler with very fine particle size and bulk density of the compound.

  3. The higher amount of filler with some dosage of wetting oil (DOP, Epoxy, CPVV etc.)


Remedy

  1. Correct the design of the hopper and the angle of repose.

  2. Hopper should have a crammer feeding device. Also, mix fine particle filler with coarse particle filler at an appropriate percentage.

  3. Not free-flowing powder mix. Reduce the oil level and increase the mixing temperature. Also, mix some percentage of a scrap of the same compound.

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