Explore our leading industrial manufacturing systems engineered for high precision, automation, and long-term durability.
How the SJ25 single-screw extruder is shaping high-precision polymer engineering across medical, automotive, and consumer industries.
In the field of polymer processing, the SJ25 extruder (with its characteristic 25mm screw diameter) serves as the primary benchmark for micro-scale and high-precision profile extrusion. Unlike larger production machinery, a customized 25mm extruder is designed specifically for application scenarios where dimensional tolerances must be kept within microns, and material residence times must be strictly regulated to prevent thermal degradation.
Whether processing advanced fluoropolymers like FEP and PFA, medical-grade thermoplastic polyurethanes (TPU), or co-extruding complex multi-layered structures, the stability of the output is directly linked to the mechanical design of the screw and barrel. Global sourcing agents are shifting away from off-the-shelf machinery toward customized SJ25 extrusion systems that can be integrated with Industry 4.0 diagnostics and closed-loop control systems.
Deep dive into BAOD Extrusion's state-of-the-art production ecosystem in Jiangsu, China.
Established in 2002 under the banner of Jiangsu Baodie Automation Equipment Co., Ltd. (BAOD EXTRUSION), our operational framework is built on 25 years of engineering experience dating back to Taiwan’s early precision manufacturing boom. With a dedicated 16,000m² manufacturing facility and a workforce of over 100 specialists, we bridge the gap between cost-efficiency and premium engineering.
Chinese Industry 4.0 is no longer just about mass production; it is about absolute customization, speed-to-market, and supply chain control. At BAOD Extrusion, we control the entire lifecycle of our machines, from screw geometry modeling and CNC precision machining to final digital testing. This vertical integration allows us to guarantee reliable lead times and component availability, providing a shield against global geopolitical supply disruptions.
Our long-term R&D efforts center on precision extrusion technology, high-efficiency processing, automated control integration, and industrial safety standards. By implementing computerized PLC control systems (such as Siemens or Beckhoff), we provide remote maintenance options and real-time process monitoring, meeting the high standards required by European and North American buyers.
Technical metrics and configuration options for performance micro-extrusion lines.
| Technical Parameter | Standard Specification | Customized / Premium Options |
|---|---|---|
| Screw Diameter | 25 mm | Custom profile modifications (micro-grooves) |
| L/D Ratio (Length-to-Diameter) | 25:1 to 28:1 | 30:1 to 32:1 for high-viscosity fluoropolymers |
| Driving Motor Power | 3 kW - 5.5 kW | High-performance AC Servo motors for torque control |
| Maximum Output Rate | 2 kg/h - 8 kg/h | Optimized up to 15 kg/h depending on polymer density |
| Control Interface | Button/Digital Display controllers | Siemens Smart HMI / PLC touchscreen with closed-loop feedback |
| Heating & Cooling Zones | 3 or 4 Cast-aluminum heaters | High-velocity forced air cooling + Ceramic band heating |
| Screw Geometry | Standard single-flight metering screw | Barrier screw with mixing elements for high pigment dispersion |
Our custom SJ25 screw geometries are designed using advanced CAD software to reduce internal shear stresses. This minimizes material degradation, making it suitable for temperature-sensitive medical thermoplastics and high-performance elastomers.
By connecting the SJ25 system with vacuum sizing systems, pullers, and rotary cutters, the entire production line operates on a single synchronized loop. This setup helps maintain tube diameter variation within +/- 0.02mm.
Our SJ25 units are designed with adjustable-height bases, allowing them to function as auxiliary extruders for applying co-extruded color lines, multi-lumen outer sheaths, and radiopaque markers on primary extrusion lines.
How customized SJ25 extruders solve critical production challenges across various fields.
In cleanroom environments, maintaining clean conditions is essential. Our customized SJ25 extruders for medical applications feature stainless steel cladding, dust-free electrical cabinets, and specialized screws made of Hastelloy or Chrome-plated tooling steel. These components resist corrosion from medical-grade PVC, TPU, and Pebax, ensuring no metallic particles contaminate the extruded products.
Modern automotive standards require lightweight, high-performance parts. A custom SJ25 extruder is often utilized to apply colored identifier stripes or protective TPU/PA coatings onto automotive cables. Incorporating our highly automated control technology, the extrusion speed adjusts dynamically based on wire-drawing speeds, preventing structural weak spots or thin sections in insulation layers.
Processing materials like FEP or PFA requires high temperatures (often exceeding 350°C). Our custom SJ25 models for high-temperature applications feature ceramic heating bands, high-capacity cooling blowers, and specialized thermal break barriers. These features protect the drive systems from heat damage while keeping the melting process stable.
A leading name in high-precision plastic extrusion equipment since 2002.
BAOD EXTRUSION, under the official registry of Jiangsu Baodie Automation Equipment Co., Ltd., has focused on the engineering, design, and manufacture of plastic extrusion systems since its founding in 2002. Building on 18 years of design experience in Taiwan under our parent company (KINGSWEL GROUP), we established our mainland production base in Shanghai in 1999, followed by expanded operations in Jiangsu.
Our design philosophy centers on precision, automated control, and energy efficiency. Rather than offering one-size-fits-all machinery, we customize every SJ25 line to fit the customer's specific resin characteristics, facility layout, and downstream requirements.
Today, our machinery serves precision sectors worldwide, including medical tube lines, multi-layer corrugated hose production, and high-performance sealing systems. We continue to invest in engineering R&D to improve the efficiency, safety, and reliability of our systems.
Stay informed about our latest exhibition news, trade developments, and product innovations.
At the National Exhibition and Convention Center (Shanghai, Hongqiao), BAOD EXTRUSION displayed its latest R&D achievements. We presented high-efficiency solutions showcasing smart extrusion systems designed to reduce energy consumption and improve output precision.
In infrastructure demolition, mining, and quarrying, precision is essential. BAOD EXTRUSION has established itself as a leading provider of customized detonating tube extrusion lines, designing systems that handle highly volatile production environments with reliable safety and precision.
Producing precision multi-lumen tubes requires high-end tooling. This technical article compares Chinese multi-lumen tube extrusion lines with European manufacturing standards, demonstrating that our design precision, process control, and material stability offer competitive performance at a lower cost of ownership.
With automotive requirements shifting toward electric drivetrains, the demand for precise fluid hoses has grown. Learn how BAOD complies with international manufacturing standards, ensuring our tube extrusion systems meet strict OEM guidelines.
Sealing profiles help reduce noise, vibration, and harshness (NVH) in electric vehicles. This article reviews automation upgrades in co-extrusion technology, highlighting our continuous, high-efficiency sealing strip extrusion systems.
An overview of the integration of intelligent controls, feedback systems, and remote monitoring in custom small-diameter tube and profile extrusion equipment. Learn how automated setups reduce human error and minimize waste.
Answers to common technical and operational questions from procurement managers and engineers.
Explore our full range of downstream units and specialized co-extrusion lines.
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