| 摘要 |
Plastic polishing pellets having multiple knife-type edges and cracks used to remove flashes from the palstic molding product are produced from thermosetting resin, e.g., urea resin, melamine, unsaturaed polyester, alkyd resin, or epoxy resin, by blending or coating the non-ionic surfactant which does not contain halogen, ammonia, phosphorus, sulfur, or metallic ion compd. The pellets have the shapes of a flat-plate, needle, or block.
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