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    In recent years, the technological progress of plastic machinery in China has been reflected in the accelerated development of new products and technologies, with a high starting point. The main approach is to introduce, digest and absorb advanced manufacturing technologies from abroad. The expansion of the international market is also an important symbol of the development of plastic machinery in China. one-third of the products of enterprises have been exported, and the export volume has accounted for about 30% of domestic sales, with an export growth rate of 20%.

    Taking pipe equipment as an example, since the introduction of the first aluminum plastic composite pipe production line in the mid-1990s, there have been more than 50 manufacturers producing this equipment in five years. Its key technologies, such as welding and laminating of aluminum pipes, have been well solved, and the integrity and progressiveness of most products have reached the international advanced level.

    During the same period, advanced equipment such as steel plastic composite units and gas PE pipe units were successfully developed, and some key technologies were solved, such as high-speed and efficient single screw machines suitable for medium and high density PE processing; Good mixing effect, short retention time, high-precision die head without melting trace, and advanced configuration such as shaping, cooling, traction, cutting, and thickness measurement.

    In recent years, domestic extruders have also developed towards high torque, high speed, and high efficiency, and have achieved certain results. Domestic extruders have also generally adopted advanced separation type screws and slotting machine barrels, and the machine heads are generally internationally popular basket type and plate type heads suitable for processing polyclinics. Programmable controllers and LCD touch screen industrial control computers have also been mature applications.

    The use of spiral head manufacturing technology in plastic film processing equipment has gradually become popular, and the use of stacked heads has been promoted. The multi-layer co extrusion film has reached 5 layers, and the geotextile film has adopted internal cooling technology. The width of the co extrusion cast film has reached 2 meters.

    The second way is to strengthen the development of intellectual property technology through technological innovation. Professor Jiang Bo of Beijing University of Chemical Technology and Beijing Fengji Plastic Machinery Co., Ltd. have successively developed the grinding disc mixing extruder. Compared with the traditional mixing equipment, it has improved the mixing effect of material fineness, Dispersity, etc., expanded the range of processing raw materials, and has significant advantages in processing magnetic, nano and other composite materials. The steel plastic composite profile extruder production line developed by Beijing Jiancheng Machinery Co., Ltd. and others simultaneously solves key technologies such as lamination, foaming, co extrusion, and cutting. Shanghai Jinwei Extruder Manufacturing Co., Ltd. has developed a PET/GPET co extrusion production line with a width of up to 2 meters.

    The improvement of the level of plastic mechanical equipment is also reflected in the widespread attention paid to the completeness of the equipment. Especially in the field of extrusion molding, the concept of main and auxiliary machines has been deeply rooted for many years. Most manufacturers only provide the main machine, and the proportion of main and auxiliary machines is out of balance. This situation has greatly changed. Currently, most extruder manufacturers can provide a complete set of extrusion production lines and even undertake turnkey projects.