ABS Extruded Profiles
1. ABS has greater hygroscopicity and humidity sensitivity. Before molding, it must be fully dried and preheated (at least 2 hours at 80~90°C) to control the moisture content below 0.03%.
2. The melt viscosity of ABS resin is less sensitive to temperature (different from other amorphous resins).
It can increase fluidity by increasing screw speed or injection pressure. The overall processing temperature is preferably 190-235°C.
3. The melt viscosity of ABS is medium, higher than that of PS, HIPS, and AS are higher, and beer with higher injection pressure (500~1000bar) is required.
4. In the use of ABS Extruded Profiles, the high-speed beer injection speed is faster and the effect is better. (Unless the shape is complex and thin-walled parts require a higher injection speed), the water level of the product is prone to air traces.
5. The molding temperature of ABS Extruded Profiles is relatively high, and the mold temperature is generally adjusted at 25-70°C. When producing larger products, the temperature of the fixed mold (front mold) is usually slightly higher than the temperature of the movable mold (rear mold) by about 5°C. (Mold temperature will affect the finish of plastic parts, and lower temperature will affect the finish and reduce the finish).
ABS Extruded Profiles picture:
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