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Double screw extruder suitable to hierarchy of middle-high viscosity

A twin-screw extruder and high-viscosity technology, applied in the field of twin-screw extruders, can solve the problems of long residence time of materials, poor conveying effect, large shearing effect of materials, etc., and achieve the effect of quality optimization

Active Publication Date: 2003-12-24
江苏圣杰实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the co-rotating twin-screw extruder has a large shearing effect on the material, which will adversely affect certain properties of the product such as tensile strength, tear strength, and modulus of elongation.
Counter-rotating non-meshing twin-screw extruders have poor self-cleaning performance and poor conveying effect, resulting in long residence time of materials, poor dispersion and mixing, and adverse effects on certain properties of the product.
thus limiting their respective applications in production

Method used

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  • Double screw extruder suitable to hierarchy of middle-high viscosity
  • Double screw extruder suitable to hierarchy of middle-high viscosity
  • Double screw extruder suitable to hierarchy of middle-high viscosity

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Embodiment Construction

[0019] The present invention uses the following specific embodiments to further illustrate the present invention in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the specific embodiments. The twin-screw extruder used for medium and high viscosity systems provided by the present invention comprises a drive motor 1, a shaft coupling 2, a gear box 3, a feeding system 4, a conveying and mixing system 5, a devolatilization exhaust system 6 and an extrusion cutter. Granulation system 7, the conveying and mixing system 5 is mainly composed of a cylinder 11, a screw mandrel 12, screw elements 9, 10, and a screw temperature control system (not shown). The motor 1 transmits power to the gearbox 3 through the coupling 2, and the gearbox 3 distributes the power to two output shafts. The output shafts are connected to the conveying mixing system 5, and the output shafts drive the screw mandrels to rotate in the same direction...

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Abstract

A dual-screw extruder for middle-or high-viscosity system is composed of drive motor, shaft coupling, gear box, primary and secondary materials feeding system, mixing-conveying system, air exhaustingsystem, extruding-out and particle-cutting system, and cylinder. It features that on two parallel screw bolts in the cylinder, the engaged and non-engaged spiral elements are simultaneously and serially connected in combination mode. Its advantage is optimal effect to remove volatile compnents, mix materials, convey mixture and transfer heat.

Description

technical field [0001] The present invention relates to a twin-screw extruder, in particular to a twin-screw extruder for chemical reaction, washing, agglomeration, blending and removal of residual low-molecular substances in a heterogeneous system characterized by medium and high viscosity machine. Background technique [0002] At present, synthetic high polymers usually undergo various polymerization reactions such as bulk polymerization, solution polymerization, emulsion polymerization or suspension polymerization to prepare various high polymers. However, the polymer products obtained through various polymerization reactions have a viscosity Generally very high, but all contain various solvents, water, various additives used in the polymerization process, as well as unreacted monomers and reaction by-products, so the so-called post-treatment must be carried out, and the above solvents, water, unreacted monomers Substances such as solids and additives are removed from th...

Claims

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Application Information

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IPC IPC(8): B29C47/40
Inventor 纪夕质刘祖安桑超葛瑞思倪斌
Owner 江苏圣杰实业有限公司
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