High-performance manufacturing solutions built on 25 years of engineering experience and rigorous quality controls.
An authoritative guide to co-extrusion technology, international compliance frameworks, and global supply chain dynamics for high-precision multi-layer tubing.
Established in 2002, BAOD EXTRUSION (Jiangsu Baodie Automation Equipment Co., Ltd.) has positioned itself as a premier developer and manufacturer of high-precision plastic extrusion equipment. Our technical foundation stems from 18 years of pioneering research and development in Taiwan under the aegis of our original parent company, KINGSWEL GROUP, which founded our specialized manufacturing hub in Shanghai in 1999. Today, with over 25 years of accumulated plastic extrusion designing and manufacturing expertise, BAOD operates a modern 16,000 square meter production facility staffed by over 100 dedicated employees, including industry-leading R&D engineers, automation specialists, and quality control experts.
Our core mission centers around the research, iteration, and deployment of:
In modern minimally invasive surgery, drug delivery systems, and interventional cardiology, single-layer polymer tubing often falls short. High-performance catheters require divergent physical properties: an inner layer that resists chemical interactions and minimizes friction, a middle layer providing structural reinforcement (or a tie-layer adhesive), and an outer layer offering biocompatibility, flexibility, and weldability.
Creating a continuous, uniform medical tri-layer tube requires specialized extrusion line design. Because the polymers have drastically different melt temperatures, viscosities, and shear characteristics, the co-extrusion crosshead, feedblock, and individual screw designs must be engineered to prevent interlayer delamination, gauge variation, and thermal degradation.
A professional-grade Custom Medical Tri-Layer Tube Line consists of three main single-screw extruders (often utilizing our high-precision SJ Series Single Screw Extruders), feeding into a common triple-manifold medical co-extrusion die head. The line is augmented by a closed-loop control system that monitors outer diameter (OD), inner diameter (ID), and concentricity in real time.
| Equipment Module | Technical Characteristics | Operational Function |
|---|---|---|
| SJ-Series Precision Extruders | L/D Ratio of 25:1 to 30:1; chrome-plated screws with barrier geometries. | Ensures highly uniform melt temperature and steady pressure profiles. |
| Triple-Manifold Crosshead Die | Streamlined spiral flow channel design; micro-adjustable die centering pins. | Controls individual layer thicknesses and prevents weld lines. |
| Vacuum Sizing & Calibration Tank | Closed-loop water level and pressure control; SUS304 construction. | Achieves ultra-precise OD control down to ±0.02mm tolerances. |
| Laser OD/ID Measuring System | Dual or multi-axis optical laser scanners linked directly to the PLC. | Sends automated feedback to puller speeds and extruder screw RPM. |
| FQ-Series Rotary Fly Cutter | Servo-driven high-speed rotary cutter with razor-sharp tool steel. | Provides burr-free, clean cuts at high operational line speeds. |
Global medical device OEMs require multi-layer tubing for a wide array of life-saving applications. The localization of machinery setups and support protocols ensures that these production plants run uninterrupted in different regulatory landscapes.
Utilized in cardiovascular and neurological interventions. The inner TPU or Pebax layer reduces friction for guide-wires, while the outer layer is optimized for heat-bonding balloons.
Tri-layer tubing with an inner fluoropolymer (FEP/PTFE) layer ensures no drug absorption or interaction occurs, while the outer layers provide elasticity for pump compatibility.
Lessons learned in automotive fuel line compliance (e.g., PA multi-layer tubes) directly enhance the robustness of our medical-grade co-extrusion technology, safeguarding high pressure tolerances.
When global enterprises procure extrusion machinery, they prioritize:
Why do leading medical device manufacturers partner with China-based OEMs like BAOD Extrusion? The answer lies in the intersection of advanced manufacturing ecosystems and cost efficiency.
The Yangtze River Delta region (Shanghai, Jiangsu, Zhejiang) represents the world’s most comprehensive manufacturing supply chain cluster for precision machinery, metallurgy, and automation electronics. By leveraging this proximity, BAOD Extrusion sources premium materials and components (such as Siemens motors, Omron PID controllers, and hardened tool-steel barrels) at optimal lead times and lower logistical costs.
This supply chain structure enables us to reinvest heavily in R&D, structural engineering, and customized post-extrusion automation, providing high-performance equipment with a lower initial Capital Expenditure (CAPEX) than traditional Western suppliers. Moreover, our extensive factory footprint (16,000 m²) allows us to run multiple pre-shipment tests (FAT) using the customer's actual resins, ensuring zero-defect integration upon site delivery.
The medical device industry is evolving rapidly, driven by trends in minimally invasive procedures and biological drug formulations. Key technical transformations include:
Purchasing high-tech machinery is an ongoing partnership. BAOD Extrusion provides localized support infrastructures to ensure maximum uptime. From pre-sale layout CAD design, process validation consultancy, to on-site commissioning by field service engineers fluent in local operating compliance rules.
Our equipment complies fully with European CE directives, UL electrical certifications for the North American market, and the safety protocols required by OSHA. Our systems are built to assist our clients in easily achieving local regulatory approval from the FDA, NMPA, and EMA.
Get professional answers about co-extrusion layers, polymer compatibility, line tolerances, and cleanroom validation.
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