Single-screw extruder as a common extruder equipment, single-screw extruder is mainly used in the plastics processing industry, single-screw extruder is generally divided into three sections in the effective length, single-screw extruder according to the screw diameter The size, the pitch of the single-screw extruder, the screw depth of the single-screw extruder determine the effective length of the three-stage single-screw extruder, and the single-screw extruder is generally divided into one-third.
The high-efficiency single-screw extruder adopts a double-stage integral design to enhance the plasticizing function. The single-screw extruder ensures high-speed and high-performance stable extrusion, special barrier comprehensive mixing design, and single-screw extruder ensures material mixing. The effect of high shear and low melt plasticization temperature guarantees high performance low temperature and low pressure metering extrusion of the material.
Single screw extruder design concept and features: high speed, high output extrusion on a high straight basis.
Single-screw extruders are inexpensive to design and therefore have a wide range of applications for single-screw extruders. However, single-screw extruders have limitations in their use. Single-screw extruders are mainly used in the following aspects:
(1) The material conveying of the single-screw extruder mainly relies on friction, which limits the feeding performance of the single-screw extruder, and it is difficult to add powder, paste, glass fiber and inorganic filler.
(2) When the head pressure of the single-screw extruder is high, the countercurrent is increased to lower the productivity of the single-screw extruder.
(3) The surface renewal effect of the single-screw extruder exhaust extruder material in the exhaust zone is small, so the exhaust effect of the single-screw extruder is poor.
(4) Single-screw extruders are not suitable for certain processes, such as polymer coloring, processing of thermosetting powders, and the like.
Single screw extruder applications: all thermoplastic extrusion, extrusion granulation.
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