BAOD EXTRUSION (Jiangsu Baodie Automation Equipment Co., Ltd.) was founded in 2002, dedicating its operations to the high-end design, manufacturing, and global sales of plastic extrusion machinery. Leveraging over 25 years of design and fabrication expertise rooted in high-quality Taiwanese engineering (through our parent company, KINGSWEL GROUP), we established our advanced manufacturing base in Shanghai in 1999, followed by major expansions in Jiangsu. We stand as a premium OEM/ODM supplier for global markets, specializing in precision profile extrusion lines, multi-lumen tubing systems, and customized tooling.
Polycarbonate (PC) is a high-performance thermoplastic polymer renowned for its exceptional physical properties, including optical clarity, outstanding impact strength, thermal stability, and flame retardancy. However, processing polycarbonate through extrusion requires sophisticated melt temperature regulation, precise calibration, and specialized tooling design to mitigate issues like molecular degradation and internal stresses.
Technical Insight: Polycarbonate is highly hygroscopic. If it is not dried properly prior to extrusion—typically at 120°C for 4 to 6 hours to reduce moisture levels to below 0.02%—hydrolysis will occur in the melt zone. This degrades the polymer chains, resulting in brittle parts and visible streaks that ruin optical applications.
At BAOD Extrusion, we develop lines featuring custom-designed single-screw extruders with specialized L/D ratios (usually 28:1 to 33:1) and custom screw geometries. This ensures optimal plasticization without shearing the polymer chains. Dynamic co-extrusion technology enables the merging of rigid polycarbonate with flexible materials or UV-resistant caps to create composite profiles that offer enhanced performance under harsh outdoor conditions.
Proprietary vacuum calibration sizing tanks ensure precise dimensions for LED light pipes, covers, and diffusers without scratching sensitive surfaces.
Integrate PMMA, TPU, or different grades of PC into a single profile to achieve multi-functional properties like UV protection and elasticity.
Integrated closed-loop control systems adjust puller speed and melt pump parameters automatically based on real-time laser measurement data.
Procuring polycarbonate extrusion equipment and tooling from China offers distinct supply chain advantages. Our factory in Jiangsu integrates in-house mold design and tooling manufacturing. This allows us to move from initial conceptual 3D models to prototype testing within 2 to 3 weeks, significantly faster than the industry standard. Furthermore, our raw material sourcing network ensures consistent access to premium grades of polycarbonate from international suppliers (such as Covestro, Sabic, and Trinseo), ensuring that the final extruded profiles match exact specifications.
To support global enterprises in the automotive, medical, electronics, and construction sectors, BAOD Extrusion maintains rigorous compliance protocols:
Due to its high structural integrity and optical performance, custom extruded polycarbonate profiles are used across a wide range of industries:
Used to manufacture diffuse, frosted, or clear light covers and lenses. The material distributes light evenly without creating hot spots from the LEDs underneath. By co-extruding a transparent optical lens with a micro-structured surface, we can steer light direction precisely.
Automobile light pipes, sensor covers, and interior trim profiles require tight tolerances. Our lines feature vacuum sizing tanks that preserve the strict surface finish and dimensional stability needed to survive extreme automotive temperature cycles.
Using medical-grade polycarbonate, our lines produce micro-bore tubes, multi-lumen catheters, and surgical device housings that are biocompatible and resistant to high-pressure sterilization cycles.
From April 21–24, CHINAPLAS 2026 was successfully held at the National Exhibition and Convention Center in Shanghai. BAOD EXTRUSION showcased its latest R&D achievements, demonstrating high-efficiency polymer processing lines that drew attention from global procurement agencies.
In demolition and mining operations, detonating tubes demand absolute mechanical integrity. BAOD has engineered specialized ultra-thin tube extrusion lines that satisfy high-speed winding and dynamic wall thickness standards.
Medical catheter specifications leave no room for error. We compare our Chinese precision manufacturing workflows with traditional European standards, proving cost-performance competitiveness through smart tooling configurations.
We detail our stringent design audits and quality assurance frameworks that deliver high-performance automotive fluid, brake, and coolant lines that conform to ISO and VDA standards.
Exploring the shift toward lightweight sealing profiles for electric vehicles (EVs). Our co-extrusion technology enables multi-material integration for noise damping and heat insulation.
Why is moisture pre-treatment critical for polycarbonate extrusion?
Polycarbonate is highly hygroscopic and absorbs ambient moisture. If extruded wet, the water molecules break the ester bonds of the polymer chains at temperatures exceeding 250°C. This chemical reaction, known as hydrolysis, reduces the molecular weight, resulting in poor impact resistance, surface bubbling, and loss of optical transparency. We recommend drying PC resins at 120°C for 4 to 6 hours using desiccant dryers to keep moisture below 0.02% before extrusion.
What extrusion tolerances can BAOD machinery maintain for custom profiles?
With our high-precision vacuum calibration systems and integrated laser sizing sensors, we can achieve profile tolerances within ±0.05mm to ±0.1mm, depending on the wall thickness and geometric complexity. For precision micro-tubing, tolerances can be kept within ±0.02mm.
Can polycarbonate be co-extruded with other materials?
Yes. Polycarbonate is commonly co-extruded with PMMA (acrylic) to provide a hard, UV-resistant outer layer while maintaining the high impact strength of the PC core. It can also be co-extruded with thermoplastic polyurethanes (TPU) to form flexible hinges or soft sealing lips integrated into a rigid profile.
What screw design is recommended for polycarbonate processing?
A barrier screw with a compression ratio of 2.5:1 to 3.0:1 is recommended. High compression ratios or excessive shear will degrade the polymer, causing yellowing and loss of structural properties. We design our screws with special chrome-plating or bimetallic coatings to resist abrasion and prevent material stagnation in the feed zones.
How does BAOD support global customers with localized installation and compliance?
We offer comprehensive technical support, including 3D die design confirmation, FAT (Factory Acceptance Testing) at our Jiangsu facility, and international dispatch of engineers for setup and calibration. Our control systems support multi-lingual operations (English, Russian, Spanish, etc.), and all lines feature international brand electrical systems (Siemens, ABB, Omron) to comply with local wiring standards.
Baodie
