Advantages of Pin-Type Extrusion Equipment
Time：
2017-12-18
The pin‑type rubber extruder is distinguished from the vented rubber extruder. In a pin‑type extruder, pins are radially inserted into the screw’s helical grooves around the barrel circumference, subjecting the flowing rubber compound to shear and mixing. The compound melts and flows within the screw threads at a low shear rate, gradually forming a continuous viscous flow. This process eliminates laminar flow and lumping that typically occur during extrusion, breaks up rubber agglomerates, ensures thorough plasticization, maintains a lower compound temperature, and achieves energy savings, while also simplifying the production process—thereby increasing the pressure of the rubber inside the extruder barrel. During product manufacturing, the pin‑type rubber extruder can enhance the quality of the final product.
The pin‑type rubber extruder is distinguished from the vented rubber extruder. In a pin‑type extruder, pins are radially inserted into the screw’s helical grooves around the barrel circumference, subjecting the flowing rubber compound to shear and mixing. The compound melts and flows within the screw threads at a low shear rate, gradually forming a continuous viscous flow. This process eliminates laminar flow and lumping that typically occur during extrusion, breaks up rubber agglomerates, ensures thorough plasticization, maintains a lower compound temperature, and achieves energy savings, while also simplifying the production process—thereby increasing the pressure of the rubber inside the extruder barrel. During product manufacturing, pin‑type extruders can enhance product density, which is why they are frequently used for extruding rubber hoses. Extruder models are designated according to the diameter of the extruder screw; the appropriate size should be selected based on the dimensions of the final product. Common pin‑type rubber extruder models include the 75‑mm, 90‑mm, and 120‑mm extruders.
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