There are about 22 major foreign rubber extruder manufacturers, mainly including T roester, Berstorff, Krupp, A-Z (V MI), Nakata Engineering, Mitsubishi Heavy Industries, Japan , Kobe Machinery, Kobe Steel, Jinzhong Machinery, American Farrell, Davis Standard, Italy Bomini, Switzerland RCM, I mterplasti-ca, British I ddor Brother and other companies. Founded in 1892, the German Trost Machinery Manufacturing Plant is mainly engaged in the development and manufacturing of mechanical equipment such as tires, cables, sealing strips and conveyor belts. The spiral rubber extruder (GS) produced by the company is used by major rubber processing plants in Europe and other countries. For nearly a century, its rubber extruder output and production quality have been recognized as industry standards. In the mid 1970s of the 20th century, Triest Company contributed to the development of the Q S M (transverse flow mixing) process, and developed the Q S M pin-type cold feed extruder. Since then, this continuously evolving process has enabled tire manufacturers and other rubber product processors to process a variety of rubber materials with the best plasticizing effect without the need to replace the screw. Good quality. Because the Q S M pin-type cold feed extruder is suitable for all rubber materials. So it has been quickly promoted to various industries in the rubber industry.
German Berstorff Rubber & Plastic Machinery Company, founded 100 years ago, is a member company of Mannesmann Plastic Machinery Group. As a leader in rubber and plastic equipment suppliers, Berstorff has become one of the world's leading manufacturers of plastic and rubber production and processing extrusion systems. In 1954 Berstorff established its first technical center, developed and manufactured its first twin-screw extruder in 1996, and merged into Mannesmann Plastic Machinery Group in 1998. . It provides extruders and extrusion systems, composite extrusion systems, roller head extrusion systems and calender production lines for the tire manufacturing industry. Its two-compound, three-compound and four-compound extrusion systems produce products including treads, sidewall rubber strips, and apex strips. The Z E B a s i c series of twin-screw extruders launched by the company, due to the high standardization of various components, this series of equipment has an extremely excellent cost performance. The new model of Z E B a s i c is especially suitable for general compounding and modification purposes. With the launch of the new Z E B a s i c model, Berstorff has constructed a full range of twin screw extruders, including ultra-high performance Z E U T X and Z E U T twin screw extruders. Z E B a s i c twin screw extruder will be promoted globally.

In 2004, the Dutch rubber machinery manufacturer V MI bought out the extruder department of the German AZ Model and Machinery Manufacturing Co., Ltd., thereby expanding the product range. This event expanded V MI's product range in the tire building and rubber industries. A-z Extrusion products include: multi-compound, three-compound and four-compound extruder, the extrusion capacity is from 60 k g / 60 r am per hour to 7800 k s / 250 r am per hour.

In general, cold-feed rubber extruders have become the mainstream of development in developed countries such as Europe and the United States. By the early 1990s, cold-feed extruders in developed countries such as Europe and the United States accounted for 95% of the total production. Developed countries such as Europe and the United States are developing and producing MT CD and other high-speed and precise new extrusion equipment.