Explore our industrial-grade, custom-engineered manufacturing systems built to exact international requirements.
From Taiwan Design Pedigree to High-Capacity Manufacturing Base in Mainland China
Jiangsu Baodie Automation Equipment Co., Ltd. (BAOD EXTRUSION), founded in 2002, is committed to the state-of-the-art designing, engineering, and global sales of plastic extrusion machinery. Leveraging 18 years of high-end design history in Taiwan through our original parent enterprise KINGSWEL GROUP, we established our modern manufacturing and assembly base in Shanghai in 1999, subsequently scaling into our advanced facilities in Jiangsu province.
We believe that the core of any high-efficiency plastic extrusion line lies in the precision design of the extruder screw and barrel assembly. Consequently, our decades of engineering focus revolve around refining screw geometries, developing advanced metallurgical treatments, and building robust, automated process lines that outlast standard options in demanding industrial environments.
Our dedicated R&D teams are constantly driving innovation across four fundamental pillars of polymer extrusion technology:
Achieving tolerances of ±0.03mm even at high line speeds on small-diameter medical and automotive tubes.
Optimizing specific energy consumption (SEC) metrics to lower overall kilowatt usage per kilogram produced.
Closed-loop sizing feedback systems communicating directly with pulling and extrusion machinery.
Incorporating emergency pressure release, over-torque slip clutches, and thermal safety controls.
An Industrial Whitepaper on Wear Resistance, Geometry Optimization, and Flow Simulation
In polymer processing, the extruder screw acts as the primary mechanical pump, thermomechanical homogenizer, and pressure generator. Designing custom plastic extruder screws requires an intimate understanding of polymer rheology, thermodynamics, and metallurgy. Standard off-the-shelf screws often fall short when processing highly abrasive additives like glass fiber, titanium dioxide (TiO2), or corrosive polymers such as PVC and fluoropolymers. As a premier custom plastic extruder screw factory, BAOD EXTRUSION tailors each screw to prevent premature mechanical fatigue, maximize shear uniformity, and maintain stable head pressures.
A custom screw must be configured according to the material's structural nature. Single-flighted, barrier, and multi-flighted screws each play unique roles. Barrier flight designs physically separate the solid melting bed from the liquid polymer channel, preventing unmelts from entering the die. Additionally, incorporating dispersive mixing elements (such as Maddock, pineapple, or blister rings) and distributive mixers (such as slotted flight designs) ensures pigment dispersion and temperature uniformity without degrading sensitive polymer chains.
Our custom screw factory uses specialized alloy formulations designed to withstand high friction and corrosive degradation. Standard structural materials start with premium 38CrMoAlA (SACM645), which undergoes intensive gas nitriding to achieve a hard wear-resistant layer. For heavy-duty industrial processing (such as working with 30%+ glass-reinforced resins), we apply PTA (Plasma Transferred Arc) bimetallic welding. This deposits a 1.5mm to 2.0mm layer of tungsten carbide, nickel-based, or cobalt-based alloy along the flight crests, increasing screw life by up to 3 to 5 times.
The physical profile of the screw is broadly divided into three main zones: the feed zone, the compression (or transition) zone, and the metering zone. The geometry is defined by the L/D Ratio (Length-to-Diameter ratio) and the Compression Ratio (the ratio of the channel depth in the feed zone to the channel depth in the metering zone). Choosing the correct ratios determines the melting rate and the shear heat generated.
| Polymer Type | Recommended L/D Ratio | Typical Compression Ratio | Screw Design Key Details |
|---|---|---|---|
| PVC (Polyvinyl Chloride) | 18:1 to 24:1 | 1.8:1 to 2.2:1 | Low shear, deep channels to prevent thermal degradation; chromium-plated or stainless steel. |
| PE / PP (Polyolefins) | 28:1 to 33:1 | 2.8:1 to 3.2:1 | Rapid melting barrier flights, high mixing density to optimize output and visual dispersion. |
| PA (Nylon / Polyamide) | 24:1 to 30:1 | 3.0:1 to 4.0:1 | Short transition zone due to sharp melting point; check rings on metering zone to prevent backflow. |
| Fluoropolymers (FEP/PFA) | 24:1 to 28:1 | 2.0:1 to 2.5:1 | Requires nickel-based superalloys (such as Hastelloy or Inconel) to resist highly corrosive fluorine gas. |
Why International Manufacturers Partner with Jiangsu Baodie Automation for Critical Extrusion Machinery
We handle raw material prep, machining, deep-hole drilling, CNC thread milling, heat treatment, and final grinding under one roof, maintaining strict control over quality and timelines.
Our manufacturing aligns with European and North American mechanical guidelines, ensuring compatibility and CE/UL conformance across all exported parts.
We support custom engineering, using wear-resistant bimetallics or custom mixers to solve specific processing challenges like uneven melt flow or rapid wear.
Located near major shipping ports like Shanghai and Ningbo, we offer fast, reliable shipping and customs clearance to minimize lead times for international buyers.
Procurement teams at international polymer processing firms face several challenges: ensuring material composition reports are accurate, verifying tolerances, and securing long-term service support. BAOD EXTRUSION addresses these concerns directly:
Adapting to Industry 4.0, Bioplastics Processing, and Stringent Regional Standards
The plastic extrusion sector is shifting toward digital integration and sustainable material processing. Custom plastic extruder screw designs must adapt to these changes:
Exporting extrusion machinery requires compliance with localized safety and environmental rules. At BAOD EXTRUSION, we build our machinery to meet the requirements of your target market:
Our custom-designed extruder screws and complete production lines are utilized in a variety of industries:
Manufacturing multi-lumen and micro-bore catheters with medical-grade PU, PEBAX, and FEP. Requires precise heat control and low-shear processing.
Producing multi-layer PA (Nylon) fuel lines, under-hood corrugated hoses, and custom-reinforced composite fluid delivery tubes.
Extruding highly abrasive materials like UHMW-PE, PMMA, and polycarbonate profiles with bimetallic screw systems to resist wear.
Proprietary machinery configurations featuring custom-engineered screw geometries
High-speed medical & industrial tube processing.
Designed for multi-layer automotive fluid channels.
Ensuring compliance with cleanroom manufacturing standards.
Optimized for cable protection and automotive wiring harness protection.
Reinforced high-strength composite tube structures for industrial fluid transport.
Integrated co-extrusion systems designed for complex multi-material profiles.
Stay informed with news, technical comparisons, and product releases from BAOD EXTRUSION
BAOD EXTRUSION presented "Smart Extrusion & High-Efficiency Innovation" solutions, showcasing our latest screw designs, wear-resistant alloy coatings, and energy-efficient motors designed for the next generation of polymer processing.
Industrial blasting operations demand high dimensional consistency. We provide customized, high-precision detonating tube lines with specialized screw controls designed for reliable performance under tight specifications.
An in-depth technical analysis comparing production tolerances, vacuum calibration systems, and screw metallurgy between domestic manufacturing setups and traditional European configurations.
Automotive fuel lines demand high multi-layer barrier consistency. Learn how our custom-designed co-extrusion feedblocks, paired with specialized screw designs, meet global TS16949 and VDA 6.3 quality system audits.
Exploring the growing demand for highly automated, continuous vulcanization sealing strip lines. This technical update covers co-extrusion dynamics, online metal insert inserting, and precision profile cutters.
Answering key design, metallurgical, and maintenance questions from process engineers
Complete your production line with our highly specialized extrusion accessories and downstream machinery
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