Twin screw extrusion technology is gradually moving towards
Date of issue：2020-08-07 16:08Click：
According to the technical report released by the national development and Reform Commission, at present, the commonly used plastic extrusion equipment in China mainly includes cone-shaped counter rotating twin-screw extruder, parallel co rotating twin-screw extruder and single screw extruder. The actual specific power of these three kinds of equipment is basically above 0.14KW / (kg. H). In 2011, the output of plastic products using these three extruders in China was about 70 million tons, and only the main extruder consumed more than 8 billion kwh.
The "efficient and energy-saving conical twin-screw extrusion technology" combines the functional and structural advantages of two kinds of twin-screw extruders in the world, namely "conical counter rotating twin-screw extruder" and "parallel counter rotating twin-screw extruder". The combination of "conical counter rotating twin-screw extruder" and "co rotating twin-screw extruder" not only keeps the characteristics of large extrusion force of conical counter rotating twin-screw extruder, but also achieves parallel counter rotating twin-screw extruder The screw extruder has good plasticizing performance and can meet the processing requirements of low-temperature and low-temperature screw, which has the characteristics of high yield and low energy consumption.
The year-on-year output has more than doubled, and the power saving rate is about 50%. At present, the technology has formed industrialization, and the products have been used in various plastic granulation, profile extrusion and other aspects. According to the technical report released by the national development and Reform Commission, it is estimated that by 2015, the total amount of plastics in China will be more than 100 million tons. If the technology can be promoted to 30% in the industry, the annual saving capacity will be about 900000.
In addition to its own continuous reform, the development and expansion of extruder industry also has a great bearing on the support of national policies. Relevant experts suggest that if the country can take plastic machinery as the basic machinery of industry as well as machine tools, as an important part of national equipment industry, it will give special support and preferential policies to advanced plastic machinery as CNC machine tools, In order to promote the plastic machinery industry to play a more obvious leverage role and make greater contribution to the development of China's equipment industry.
In the future, China's plastic machinery industry will develop in the direction of specialization, serialization, standardization, compounding, miniaturization, large-scale, individuation and intelligence. At the same time, it will meet the requirements of energy saving, material saving, high efficiency and environmental protection, so as to meet the needs of cost saving of plastic raw materials and plastic products processing enterprises. This is the main direction of the world plastic machinery industry development and market demand.
