What causes metal impurities to be mixed into plastics?
In the process of reprocessing (plastic modification, re-use of nozzle material, etc.), there are mainly the following potential factors that cause metal impurities to be mixed into the plastic:
1) Open container for production and transportation
2) Staff negligence, such as metal ornaments, hair clips, buttons and nail clippers, etc.
3) Damage or falling of the metal parts of the equipment
4) Damage to debris from crushing or grinding equipment
5) Missing metal tools for maintenance
6) Welding slag missing during maintenance
7) Dropped bolts and nuts
8) It is possible to infiltrate the raw materials, etc., even after the nails on the pallets used for transportation are punctured.
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