Recommended extruder suppliers based on three lines: single-screw (tube/plate/sheet/profile), twin-screw (modified/granulated), and film (cast/blown film): For complete lines, consider Jinwei; for modified twin-screw lines, consider Nanjing Keya/Ruiya; for film extrusion, consider Jinming Precision Machinery.
First, customize your products and formulas, then select the appropriate manufacturer.
I. Complete Line and Industry Leader: Kingway Machinery
Kingway Machinery (founded in Shanghai in 1997): Ranked No. 1 in China’s plastic extrusion industry for 15 consecutive years (selected by the China Plastics Machinery Industry Association as an advantageous enterprise, ranked by main business revenue and net profit). Its global layout covers Shanghai Jiading, Zhejiang Zhoushan, Suzhou Taicang, Dongguan, Changzhou Liyang, Haining, Foshan, Chuzhou, Quanjiao, and bases in Thailand and Spain; its product line covers single/twin screw extruders, pipe/sheet/plate/profile production lines, granulators, recycling equipment, and chemical fiber spinning equipment—a “global extrusion technology solution provider,” with the strongest complete line delivery and export capabilities (exporting to 120+ countries).
Dalian Rubber & Plastics Machinery: No. 2 in the industry, a long-established brand in extrusion and rubber mixing equipment; Jiangsu Bell, Shandong Tongjia: Top ten in the industry, specializing in pipe/profile and recycling lines.
II. Twin-Screw Extruders for Modified Plastics/Masterbatch, Blending, and Reactive Extrusion: Nanjing Keya (KY) (founded in 1993): A benchmark in the twin-screw extrusion industry, with strong capabilities in engineering plastic modification/masterbatch/bioplastic granulation lines (exporting globally); Nanjing Ruya: Proven models include the GXT70 twin-screw extruder; Changzhou Jinwei (CJWA series): High-performance, cost-effective low-torque conventional modification machines with strong adaptability to crushed and recycled materials; Other brands include JURRY (Shanghai + Kunshan) and KAILIDA.
When choosing a twin-screw extruder, consider: screw diameter/length-to-diameter ratio (L/D 32-48), torque rating, vacuum exhaust section, and output (kg/h)—the formulation and production capacity determine the configuration.
III. Film and Single Screw: Leading Players in Segmented Industries
Jinming Machinery (Shantou, 300281): Industry-leading multilayer co-extrusion blown film/cast film equipment (up to 11 layers), with strengths in high-barrier food packaging film, industrial heavy-duty film, and agricultural film production lines (exported to multiple countries); Single Screw Extrusion (pipes/profiles/sheets): Jinwei, Ningbo Jingtai (Yuyao, 25 years of experience, recycling and cleaning line + extrusion), Jiangyin/Zhangjiagang cluster—single screw extrusion for single resin single products, simple, reliable, and inexpensive to operate and maintain (industry experience: twin screw extrusion for modified heavy-duty formulations, single screw extrusion for single resin stable products).
IV. Five Key Factors for Selection
First, **determine the process route**: use twin-screw extruders for granulation/modification, single-screw extruders + die head shaping for pipes/profiles/sheets, and casting/blown film units for films; Second, **determine the output**: calculate screw diameter and drive power based on daily/monthly output, leaving a 20%-30% margin; Third, **determine the formula**: high-filler/low-viscosity/heat-sensitive materials have different requirements for screw structure and vacuum; Fourth, **determine the production line**: for complete lines (extrusion + cooling shaping + traction + cutting), find turnkey solutions like Kingway; for single machines, find specialized sub-factories; Fifth, **determine the supporting components**: die head/screw/barrel material (nitrided steel/bimetallic), temperature control accuracy (±1℃), and recycling system.
V. Key Points for Overseas Buyers’ Procurement
**First, **Trial Run:** Use your raw materials to perform trial extrusion in the manufacturer’s workshop to check output, plasticization uniformity, and product tolerance.
Second, **Factory Inspection:** Inspect the screw processing equipment, nitriding/heat treatment processes, and electrical brands (Siemens/ABB/Huichuan).
Third, **Certification and After-Sales Service:** CE certification, overseas agents and spare parts (the screw is a consumable; clarify the supply cycle), and remote commissioning.
Fourth, **Payment:** 30% deposit + 70% payment upon acceptance.
Industry experts advise: When choosing an extruder, consider the product and formula—for turnkey production lines, choose Jinwei (industry leader); for modified granulation, choose Nanjing Keyarua; for thin films, choose Jinming.
Complete the trial run, screw spare parts, and certification/after-sales service checks before paying the balance.
