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What is the concept of co-rotating parallel twin-screw extruder?

by:TENGDA     2022-09-24

The sub-mother machine granulator is also called a twin-screw granulator. A machine with two screws running in parallel (with the same direction and the opposite direction). What kind of material can the co-rotating parallel twin-screw extruder make?


Glass fiber series, the temperature is too low, the resin is semi-melted, and the glass fiber coating is poor in the latter part; the temperature is too high, the resin flow is improved, the tempering and shearing effects become smaller, and even high temperature degradation occurs, and the latter part of the melting section (that is, the glass fiber). fiber inlet) melt flow conditions. According to different base materials and different glass fiber content. After deducting the heat input by screw shearing, it is slightly higher than the melting point of the base material.


For the alloy system, the temperature is appropriately adjusted based on the melting temperature of the two groups, taking into account the proportion of the components and the thermal sensitivity of the components. Flame retardant system, (protect the flame retardant), its temperature should be low, especially for white materials, as low as possible. Glass fiber reinforced flame retardant system, the setting temperature is between the previous two, based on the basic melting point of the material.


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