Plastic Extruder Development Trend

After more than 100 years of development, the plastic extruder has been derived from the original single-screw twin-screw, multi-screw, and even non-screw and other models. Plastic extruder (host) can be used with a variety of plastic molding auxiliaries such as pipe, film, support material, monofilament, flat wire, packing tape, squeeze net, plate Matched to form a variety of plastic extrusion molding production lines, the production of various plastic products.
1, extruder toward large-scale, high-speed, high efficiency direction
Foreign screw diameter of 200-250mm extruder has been very common, screw diameter greater than 400mm special extruder is not uncommon. Increasing the screw diameter can increase the production capacity of the extruder. When the diameter of the screw is doubled, the production capacity of the extruder can be increased several times.
Foreign appeared speed above 300r / min high-speed and ultra-high-speed extruder, extruder production capacity has been greatly improved. However, after the speed increase will bring poor plasticization and other issues, there have been many new screw, such as separation, mixing type, barrier type, shunt type, combination and so on. The aspect ratio of the screw also evolved from 20: 1 to 36: 1, while others were as high as 43: 1.
2, modular
Auxiliary auxiliary equipment for extruders has also been perfected, standardization, to meet the requirements of different plastic products. Modular production can be adapted to the special requirements of different users, shorten the R & D cycle of new products and strive for greater market share; and specialized production can make all system module components of extrusion equipment to fixed-point production or even global procurement, To ensure the quality of the entire period, reduce costs and speed up capital turnover are very favorable.
3, intelligent and network
Developed countries, the extruder has been widely used modern electronic and computer control technology, the entire extrusion process parameters such as melt pressure and temperature, the fuselage section temperature, the main screw and feed screw speed, feed, each The ratio of raw materials, the motor current and voltage parameters for online testing, and the use of closed-loop computer control. Some companies have used online remote monitoring, diagnosis and control of the extrusion molding production line network control. This is to ensure the stability of the process conditions, improve product accuracy are extremely beneficial.
4, customized
In order to meet the requirements of new materials and new processes, new or dedicated plastic pipe extrusion continue to emerge. Such as three-screw extruder and planetary multi-screw, screwless extruder, reactive extruder, two-color extruder, foam extruder.

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