July, 2009
A twin screw extruder is not a simple combination of two single screws. In addition to the nuclear space between twin screw and barrel, there are side gap, the tetrahedron gap and calendaring gap. Mating-type twin screw extruder can be divided into full meshing engagement and a part one and the entire mating type can [...]
Screw extruder including single screw extruder and twin screw extruder, is the most commonly used method of polymer processing, and it was in 1930s that twin screw extruder came into being era.
In accordance with the direction of the two screws’ relative rotation, an extruder can be divided into two broad categories: the rotation and [...]
This stabilizator can heat and control pressure screw to make sure the polymer in pressure screw keep in molten state and drive motor connected with pressure screw though reducer. In the working process of extruder, extruder system will produce pressure in head of extruder; and polymer melt is pushed into parallel pressure ptabilizator and [...]
Actually, the stabilizator can be seen as a parallel single screw pumping device which has stabilization effect between extruder and its head. The part betwen pressure screw and extruder appears as the form of parallel connection, so there will be a pressure value just the same as extruder system.
There is three-dimensional flowfield of the melt conveying zone in an intermeshing counter-rotating twin screw extruder. Nowadays, the research about twin screw extrusive process main focus on the step of fuse-element output. This is because the output characteristics of materiel in this section clearly affect the performance characteristics of twin screw extruder and [...]
A mathematical model of the parallel pressure stabilizator for a single screw extruder was proposed.The results of simulation by the proposed model indicated that by means of changing the speed of the subsidiaryscrew in the stabilizator and the self-adjusting length of the filled melt polymer , the stability of the pressure and production rate of [...]
Plastic is melt into homogeneous melt plastics by a twin screw extruder, and can make the head of the extruder with constant temperature, constant quality and constant pressure under the pressure created in the process of plasticization. This is also the way which is used on most thermoplastic plastic. Extruders have different kinds of type [...]
The competition of single screw extruder is pretty strong in international plastics market. In order to ensure the expansion of its market share of extruder, it is necessary for extruder manufacturers to improve their equipment reliability, reduce costs and ensure that the manufacturing process of products doesn’t be interfered.
It is essential to choose machines and [...]
In recent years, twin screw extruder extremely has a strong market, but relatively speaking, single screw extruder has been in a state of silence. However, the single screw extruder, as basic plastic processing equipment, enjoys the fame of simple structure, lower cost and greater design flexibility. A variety of special single screw extruders now have [...]
Twin screw plastics processing technology has become very common in industrial applications, so that competition is extremely fierce. Different suppliers of twin screw extruder have been offering their own unique features and innovative technologies in order to win the twin screw extruder market.
1) High-speed, high-volume: high-speed, high efficiency, energy saving in recent years have been [...]
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