In recent years, the high-speed and high-yield extruder can enable investors to obtain large output and high return with low input. The high efficiency of plastic extruder is mainly reflected in high output, low energy consumption and low manufacturing cost. In terms of function, screw extruder has not only been used for extrusion molding and mixing processing of polymer materials, but also has been used in food, feed, explosives, building materials, packaging, pulp, ceramics and other fields. In addition, the "one-step extrusion process" which combines mixing granulation and extrusion forming process is also worth paying attention to. After years of development, China's plastic extruder industry has shown three development trends.
Large scale and precision:
The realization of large-scale extrusion equipment can reduce the production cost, which has more obvious advantages in large-scale twin-screw granulation unit, film blowing unit, pipe extrusion unit, etc. The major technical equipment required for national construction services and the large extrusion granulation unit, one of the three key equipment supporting the large ethylene project, have been imported for a long time. Therefore, it is necessary to speed up the localization process to meet the needs of petrochemical industry development. And fine Densification can improve the gold content of products, such as multilayer coextrusion composite films Dense extrusion, while as the realization of fine The melt gear pump, an important means of dense extrusion, must be developed and studied.
Modularity and specialization:
Modular production can meet the special requirements of different users, shorten the R & D cycle of new products, and strive for greater market share; Specialized production can arrange fixed-point production or even global procurement of various system module components of extrusion equipment, which is very beneficial to ensuring the whole period quality, reducing costs and accelerating capital flow.
Intelligence and Networking:
Modern electronic and computer control technologies have been widely used in extruders in developed countries. The process parameters of the whole extrusion process, such as melt pressure and temperature, body temperature of each section, rotating speed of main screw and feeding screw, feeding volume, ratio of various raw materials, current and voltage of motor, are online detected, and closed-loop microcomputer control is adopted. Some companies have adopted online remote monitoring, diagnosis and control to control the extrusion production line. This is beneficial to ensure the stability of process conditions and improve the accuracy of products.
Enterprises engaged in the plastic pipe extruder industry should, on the premise of fully understanding the industry characteristics and the industry development trend, combine their own advantages and disadvantages, identify the industry development trend, create development opportunities, and always be ready for the transformation and upgrading of enterprises.
