不稳定喂料会成为故障原因。加工再生材料时这并不少见笔者在检查用于加工回收料的挤出螺杆时,经常遇到破坏性的螺杆磨损现象。在再生加工过程中出现的问题通常不能在依赖颗粒化聚合物的传统挤出方法,即使这些传统的方法使用高比例的再粉碎料。那是因为喂入回收挤出机的薄膜、纤维、发泡材料或塑料瓶的破碎料体积密度一般比较低, Unstable feeding can cause failure. This is not uncommon when processing recycled materials When I examine extruded screws for processing recycled materials, I often encounter destructive screw wear. Problems that occur during the recycling process often do not rely on traditional extrusion processes that rely on pelletized polymers, even though these conventional processes use a high proportion of reglomerated material. That’s because the bulk density of the crushed material fed to the recovery extruder’s film, fiber, foamed material or plastic bottle is generally low,