Our country Rubber extruder Annual production is close to 80 units, primarily distributed in Qingdao, Guilin, Inner Mongolia, Shanghai, and other locations. Although numerous domestic enterprises specialize in the design and manufacture of rubber extrusion equipment, only four to five companies currently possess independent R&D and design capabilities, wielding significant influence within the industry. In the mid-1980s, BET and TR introduced their triple‑compound and double‑compound extrusion technologies to China, where they were promptly adopted and applied. Through technical exchanges with several international research firms and by assimilating advanced foreign technologies, a range of screw‑type cold‑feed compound extruders was developed and brought into production, achieving domestic self‑reliance in compound extrusion equipment and elevating the technology to a relatively mature and comprehensive level. Examples include the 120/150/120 three‑die cold‑feed extruder.

Rubber extruder In the production of sealing strips, three‑component and four‑component die heads have also seen rapid development. Previously, when China first introduced adhesive‑sealant production lines, composite die heads were often equipped with shear‑type die heads, leading to rather complex structural analyses. After years of advancement, adopting three‑ or four‑component die‑head designs has become considerably simpler, and rubber extruders perform well without the need for shear‑type die heads. With the progress of domestic composite‑material extrusion equipment, both extrusion technologies and manufacturing processes are poised for rapid growth. The “L” roller‑head needle‑type cold‑feed extruder, designed and manufactured by Rubber & Plastics Machinery Co., Ltd., has already been applied in the production of conveyor‑belt cover films and in the manufacture of airtight innerliners for radial tires. Its distinguishing feature is that it integrates the functions of a calender and… Rubber extruder Its advantages include excellent gas barrier properties of the extruded film, a simplified production process, reduced equipment requirements, significant energy savings, and improved product quality.

It is reported that some domestically produced composite-material extrusion equipment cannot fully replace imported counterparts. The 150°C/250°C dual‑stage medium‑size extruder developed by Rubber Industry New Technology Development Co., Ltd. significantly enhances the conveying and extrusion capacities of rubber materials, achieving an output of 4,200 kg/h. With a die diameter of 11.00, its extrusion speed ranges from 1–6 m/min up to 22 m/min, roughly doubling the performance of most comparable imported machines. Furthermore, the company’s newly developed 120/200/250 cold‑feed triple‑layer extruder has become China’s first domestically manufactured extrusion system capable of producing all‑steel tires using triple‑layer composite materials.

The engineering company has also successfully developed a four‑layer co‑extrusion machine that meets or approaches advanced international standards. With total assets of 10 million yuan, this production line is specialized in manufacturing various radial tires. The equipment is an imposing 100‑meter‑long system, with a single die weighing as much as 23 tons; only a handful of manufacturers worldwide can supply comparable products. Internationally competitive, technologically advanced equipment management facilitates the adoption of new machinery and cutting‑edge technologies, elevates the operational capabilities of Chinese enterprises, and drives overall economic growth. In particular, given the rapid and robust development of radial tire production in China, leveraging the advantages of cold‑feed extruders—especially through online marketing—can help these machines gain a stronger competitive edge. As a replacement for traditional hot‑feed and conventional cold‑feed extruders, cold‑feed extruders offer broad prospects for further development and application research.