Analysis on the development trend of plastic mould

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Analysis on the development trend of plastic molds in China

the plastic mold industry has developed rapidly in China in recent years, followed by increasingly fierce market competition. After joining the WTO, foreign mold manufacturers enter the domestic market. To stand out in the fierce competition, it is very important to develop mold standard parts and implement professional production of molds

the development of mold standard parts is of great significance to shorten the mold design and manufacturing cycle, reduce the mold production cost and improve the mold quality. If we can realize the professional production and commercial supply of mold standard parts, it will greatly promote the development of China's mold industry

the degree of mold standardization in foreign developed countries is 70% - 80%, while in China, it is only about 30%. If mold standard parts can be widely used, the mold design and manufacturing cycle will be shortened by 25% - 40%, and the waste of working hours caused by users' self-made mold parts can be reduced. The application of mold CAD/CAM technology in mold design has been more common. The promotion and use of mold standard parts can realize the sharing of some resources, which will greatly reduce the workload and working time of mold design, and is of great significance for the development of cad/cam technology and the improvement of mold precision

even if only one part of the previous mold is damaged, it will not be used. Because it is not a standard part, it is difficult to have corresponding products in the market. It takes time and effort to go to the manufacturer to replace parts. If standard parts are used, they can be easily repaired and replaced, which will greatly improve the service life of the mold

now, domestic enterprises have realized the importance of mold standardization. At present, there are more than 100 mold standard parts production enterprises with a certain production scale, and the main products are plastic mold base, side impact device, push rod push tube, etc. among them, plastic mold base can produce larger products, which has laid a foundation for the development of large-scale precision molds

although the domestic mold industry has made great progress, there is still a big gap compared with foreign countries. The implementation of specialized production of molds is an important part of accelerating industrial development. Many regions in China have successively established regional mold cities, which have played a positive role in the development of mold industry. For example, Yuyao mold City in Ningbo, Zhejiang Province is the first mold City in China, and now there are hundreds of mold enterprises, which has promoted the development of mold industry in Yuyao and surrounding areas

Shenzhen, which has successfully implemented the specialized production of molds, has nearly 1000 mold processing enterprises. Its mold enterprises have a strong awareness of establishing a quality assurance system. Those who apply for ISO9000 certification are enthusiastic about replacing metal materials with engineering plastics, and they all realize that professional production is a pass to enter the international market. Wholly foreign-owned mold enterprises have an absolute advantage in Shenzhen, with the leading professional and technical level in the country, wide application of new technologies, complete mold varieties, high quality and short mold making cycle. These enterprises can make all kinds of molds except for large-scale panel molds for automobiles, such as high-speed milling, gas assisted injection molding, reverse engineering, hot runner technology, rapid prototyping technology, etc

mold enterprises in Shenzhen have not only achieved specialization in technology, but also adopted more and more specialized production methods with design as the leader and processing according to the process flow in the production management of mold enterprises, reducing the requirements for the technical comprehensiveness of mold workers and emphasizing specialization. Nevertheless, the molds produced in Shenzhen can only be said to belong to the middle and upper levels, and some key molds, such as copier main frame molds, high-precision molds for cameras and video cameras, still need to be imported

the implementation of standardization and specialization has promoted the development of China's plastic mold processing industry, and will continue to provide necessary technical support for China's plastic mold manufacturing enterprises to improve their technical level, enhance their competitive strength, and accelerate the pace of integration into the international market

unsaturated polyester resin Market in China

unsaturated polyester resin is one of the main varieties of thermosetting resin, which is used in industry, agriculture, transportation and other fields. Unsaturated polyester resin is mainly divided into two series: reinforced and non reinforced. The reinforced products mainly include cooling towers, boats, chemical anti-corrosion equipment, vehicle parts, doors and windows, activity rooms, sanitary equipment, food equipment, entertainment equipment and sports equipment. Non reinforced products mainly include furniture coatings, Polaroid boards, buttons, ivory like and jade like handicrafts, artificial marble, artificial agate, artificial granite, etc

in 2002, the output of unsaturated polyester resin in China reached 560000 tons, an increase of 11% over the previous year. 140000 tons of unsaturated polyester resin were imported, more than 4000 tons were exported, and the actual domestic consumption of resin reached more than 700000 tons

in recent years, the product structure of unsaturated polyester resin products in China has changed greatly, and the ratio of reinforced and non reinforced resin has changed from 30:70 to 45:55 in 2002. The consumption of non reinforced resin increases faster than that of elongation deformation, reaching 300000 tons, among which the consumption of polyester handicrafts and polyester artificial stone is very promising. Quanzhou, Fujian Province, known as the hometown of polyester crafts in China, has more than 400 polyester crafts enterprises, with an output value of 4billion yuan, and 90% of the products are exported. The production capacity of artificial stone in Guangdong ranks first in the country, and the consumption of resin for artificial stone is about 70000 tons, accounting for 80% of the national consumption. In addition, non reinforcing resins are also greatly increased in buttons, polymer concrete, coatings for Piano and Polaroid boards, and atomic ash for automobiles

the consumption of unsaturated polyester resin for reinforcement also increased in 2002, reaching 260000 tons. In addition to traditional BMC electrical switches, buried cable pipes, cable cores, insulators, insulation ladders, cable trays, TV insulation inserts, instrument boxes, wind turbine blades, launch rooms, clean templates, etc. are new products developed in recent years. In the glass fiber reinforced unsaturated polyester, the winding pipe market continues to grow. As an important application field of anticorrosion, FRP has a lot of room for development. FRP cooling tower is an ever-growing product. Glass fiber reinforced plastic environmental protection and green equipment, sanitary equipment, building decoration transparent materials also have rapid applications

using Petrochemical distillates and residues for reuse to produce unsaturated polyester resin is one of the available raw material routes. The reason why Nanjing Chemical Design and Research Institute and Jiangsu yabangtu choose to use graphene in the field of intelligent textile is that they attach importance to the good thermal conductivity of graphene. The company has jointly developed DCPD modified resin. The output of this kind of unsaturated polyester resin in the country has reached 40000 tons. In addition, the production of unsaturated polyester resin from polyester chip waste polyethylene terephthalic acid and its derivatives has also been successfully developed in recent years. The annual output of this crude para benzene unsaturated polyester resin has reached tens of thousands of tons. By 2005, the domestic polyester chip production will reach 10million tons, and hundreds of thousands of tons of waste crude benzene can be used every year

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