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Taking plastic granulator as an example, it integrates mechanical, electrical, and instrumentation, and has a high level of automation. It is one of the key equipments in large-scale ethylene projects. At the recent meeting of the LCM China users of the Kobe Steel Plastic Granulator in Japan, experts from Japan stated that the large-scale development of petrochemical plants led to the large-scale production of plastic granulators, and that the users’ requirements for mechanical stability and energy saving and consumption reduction of the units were higher. The higher is.
According to briefings, China once made several 70,000 tons/year plastic pelletizers through cooperation with foreign countries, but none succeeded. Today, large-scale plastic pelletizing units require a production capacity of 50 tons/hour or more, equivalent to a capacity of 300,000 to 400,000 tons/year, and are difficult to design and manufacture. At present, only the design, manufacture, installation and commissioning technologies of large-scale plastic granulation units are available from Japan Kobe Steel, Japan Steel, and Farrell.
Compared with foreign products, China's plastic granulator manufacturing technology is relatively backward. Through the digestion and absorption of large-scale granulator technology, China has completed the construction drawing design of a 70,000-100,000 tons/year polypropylene blending and extrusion unit, and mastered various aspects of large-scale granulator and related technologies. Not yet applied. The design and manufacturing level of China's extrusion granulator is quite different from that of foreign countries, and the extrusion granulators for large and medium-sized polyolefin devices still rely on imports.
Experts pointed out that large-scale, sophisticated and advanced control technologies will be the direction of R&D of domestic large-scale plastic granulators.
In recent years, China's plastics machinery manufacturing industry has experienced rapid and sustained growth. This point is reflected in the import and export, not only shows that China's plastic machinery in the production of a great increase, but also shows that the domestic plastic machinery in the quality and technology has significantly improved.
At present, China is a big country in the manufacture of plastic machinery. At the same time, it is a big consumer of plastic machinery, but it is not a plastics machinery power. At present, there are about 400 plastics machinery manufacturers in China, most of which are located in the economically developed southeast coastal areas, mainly in the Pearl River Delta and the Yangtze River Delta. In Tibet, Xinjiang, Qinghai, Ningxia and Hainan, there are still no plastic machinery manufacturers.
The reason is that the foundation of China's presses is relatively thin, and high-precision equipment still needs to be imported. With the continuous expansion of the market capacity of China's plastic machinery, the total amount of imported plastic machinery has not been reduced, and it still accounts for about 50% of the total market capacity.
So far, the plastic granulation units in China's large-scale ethylene projects have been relying on imports, precision injection molding machines needed in electronics and communications engineering, large-scale injection molding machines needed in the automotive industry, large-scale multilayer blow molding machines, and packaging industries. A large number of biaxially stretched film production equipment, multi-layer blow molding machines, and precision extruders required in the medical and health field have also been imported.
On the one hand, there is indeed a gap between the level of China's plastic machinery and the advanced countries, especially some technical difficulties, such as precision injection molding machines, large-scale granulation units, the domestic can not produce, the market is urgently needed, really need to import; on the other hand The performance and quality of domestically-made equipment are not worse than those of imports, and they can fully meet the requirements and are imported from abroad. To solve this problem, apart from further improving its own development and innovation capabilities, the plastics machinery industry also needs to be further improved in terms of management. However, China's press manufacturing companies have been working hard to keep up with international standards and actively participate in international competition.
Judging from the speed of development and major economic indicators, plastic machinery ranks among the top 190 industries in the machinery industry. Nowadays, the annual production capacity of plastic machinery in China is about 200,000 sets (sets), ranking first in the world. In Ningbo alone, there are more than 100 injection molding machine manufacturers, of which “Haitian†brand injection molding machine series produced by Ningbo Haitian Group Co., Ltd. is complete and exported to more than 30 countries and regions in the world, including developed countries such as Europe and America. Earn about 200 million U.S. dollars.
According to statistics, China's plastics industry is still in a high growth period. It is estimated that by 2010, the output of China's plastic machinery will reach 500,000 units.
In general, China's general plastic machinery products have excess production capacity. Companies that are currently undergoing technological transformation will need to add more efficient, high-precision equipment and testing equipment in an effort to improve product development and innovation.
There is no diamond drill and it is difficult to live in porcelain. If the plastics industry wants to "break" again, there will be many supplementary homework to do.
With the rapid development of the global petrochemical industry, the demand for granulators in the domestic petrochemical industry has grown rapidly. A few days ago, Dalian Rubber Plastics Machinery Co., Ltd. announced that the company will develop a large-scale domestic plastic granulator will be commissioned in its new plant in May this year. However, the reporter learned that domestic high-end molding machines are still rare in the domestic market for large-scale plastic molding machines, and imported products still have an absolute advantage.