BAOD EXTRUSION (Jiangsu Baodie Automation Equipment Co., Ltd.), established in 2002, is a premier manufacturer specializing in high-end, customized plastic extrusion systems and screw design solutions. Rooted in 18 years of technical design and fabrication excellence derived from Taiwan, our initial investment began with the establishment of our Shanghai production hub in 1999 under the KINGSWEL GROUP.
With over 25 years of specialized experience in high-performance polymer extrusion, we provide complete, turn-key solutions tailored to medical, automotive, and industrial engineering applications.
Years of Engineering Experience
Modern Production Space
Highly Skilled Engineers & Staff
At the core of every high-performance polymer extrusion system lies the extruder screw. Screw design is a highly specialized branch of mechanical engineering and polymer rheology that directly determines melt homogeneity, pressure stability, throughput efficiency, and product quality. A generic screw design fails to account for the unique thermodynamic properties of different thermoplastics, leading to issues like polymer degradation, surge, excessive shear heating, or un-melted resin particles.
Standard single-screw geometry consists of three primary functional zones: the Feed Zone, the Transition (or Compression) Zone, and the Metering Zone. The length-to-diameter ratio (L/D) and the compression ratio (the ratio of channel depth in the feed zone to that in the metering zone) must be calculated based on the specific resin's bulk density, melting curve, and viscosity profile under shear.
Designed to convey solid polymer pellets from the hopper into the barrel. This zone requires optimized flight depths to maximize solids transport without causing premature melting or bridging, which disrupts consistent downstream throughput.
As the channel depth decreases, the polymer is compressed and melted. This zone relies on shear heating and heat conducted from the barrel. Accurate flight geometry ensures air is forced backward through the feed throat, avoiding bubbles in the final extrudate.
This final section pumps the molten polymer through the die assembly under high pressure. The channel depth here is thin and highly precise, ensuring a uniform melt temperature and a pulsation-free delivery of plastic melt to the die.
Chinese manufacturing hubs, particularly in advanced industrial clusters like Jiangsu and Shanghai, have transformed from cost-driven components suppliers into world-class centers of specialized polymer processing engineering. Collaborating with a specialized Chinese manufacturer like BAOD EXTRUSION yields distinct technological and strategic advantages for global companies:
First, the integration of advanced materials and surface treatment technologies has significantly increased. China-based manufacturers utilize premium alloys such as 38CrMoAlA, supplemented by bimetallic barrel liners and tungsten carbide or nickel-based alloy coatings on the screw flights. This ensures exceptional resistance to abrasive wear (from fillers like glass fiber or calcium carbonate) and corrosive attack (from polymers like PVC or fluoropolymers).
Second, rapid iteration and co-development cycles are highly optimized. Using advanced CAD tools and finite element analysis (FEA) software, engineering teams can simulate melt profiles and shear forces, tailoring screw configurations for complex resins like TPV, PU, and UHMWPE. This technical agility allows for rapid prototyping, enabling faster transitions from design to production.
The global plastic extrusion landscape is undergoing a massive shift toward energy conservation, digital integration, and material complexity. As showcased during the successful conclusion of CHINAPLAS 2026, several key trends are driving the future of extrusion screw and machine designs:
Modern lines increasingly employ barrier screws that separate solid polymer from melt pools early in the process. This increases extrusion speeds while preventing thermal degradation, resulting in a cleaner melt.
With global sustainability mandates, systems utilize electromagnetic induction heating and direct-drive permanent magnet motors. These systems cut power consumption by up to 30% compared to traditional band heaters.
Smart sensors along the barrel track melt pressure, temperature fluctuations, and screw torque in real-time. Automated controllers adjust motor speeds and cooling rates dynamically to maintain micron-level tolerances.
Plastic extrusion technology is not a one-size-fits-all discipline. Different industrial sectors place radically distinct demands on the extrusion screw and calibration systems. BAOD EXTRUSION develops macro-solutions tailored for critical sectors worldwide:
Automotive Sealing Systems & Fluid Handling: Modern vehicles demand lightweight, durable, and highly weather-resistant seals. Our specialized TPV/PVC Automobile Sealing Strip Extrusion Lines rely on high-shear barrier screws that thoroughly mix thermoplastic vulcanizates (TPV). This ensures the rubber phase is uniformly dispersed within the plastic matrix, delivering excellent elastic recovery and flawless surface finishes. Similarly, multi-layer fuel lines and cooling tubes require co-extrusion feedblocks and precision screws to prevent layer delamination.
High-Precision Medical Tubing: The production of catheters and multi-lumen clinical tubes demands the highest level of stability. Any pulsation in melt delivery can compromise crucial inner and outer tolerances. BAOD’s high-speed PVC and PU medical lines feature ultra-precise metering zones, customized L/D ratios, and dynamic melt pumps. These components deliver a consistent polymer feed, meeting strict global medical compliance standards.
Heavy-Duty Industrial Pipes & Corrugated Conduits: Infrastructure projects require pipes that can withstand high mechanical stress and environmental exposure. Our PA/PE/PP/PVC single-wall corrugated pipe lines use customized high-output screw designs. These designs process highly viscous resins at high throughput rates without over-shearing the material, ensuring the mechanical integrity of the corrugations.
International procurement managers look beyond the initial purchase price when selecting an equipment partner. To ensure long-term profitability and operational reliability, modern buyers focus on a comprehensive checklist of technical and service capabilities:
BAOD EXTRUSION meets these challenges by providing thorough quality documentation, transparent test runs prior to shipment, and responsive technical support from our engineering teams.
A frequent concern for international enterprise clients is whether plastic extrusion lines designed and built in China meet the stringent compliance and safety guidelines mandated in Western Europe or North America. Historically, European machinery set the benchmark for mechanical over-engineering. However, leading manufacturers like BAOD EXTRUSION have bridged this gap by integrating international standards directly into their design blueprints.
For example, in our High Precision Multi-Lumen Tube Extrusion Lines, we adhere to strict ISO and CE safety directives. The electrical engineering incorporates safety relays, Siemens PLC control architectures, and localized touchscreens with multi-language configurations.
From a process standpoint, our screw geometry matches the high melt homogeneity standards set by European brands. We achieve this by optimizing flight profiles using advanced thermodynamic calculations. This ensures that sensitive materials like medical-grade PVC do not overheat, preventing polymer degradation.
Over decades of innovation, Jiangsu Baodie Automation Equipment Co., Ltd. has developed specialized downstream and tooling solutions designed to work seamlessly with our advanced extruder screws:
Perfect for producing cleanroom medical tubes, micro-ducts, and precise industrial piping. Designed with dynamic melt control and specialized sizing systems to guarantee roundness and wall uniformity.
Engineered for fuel delivery systems and multi-layered automotive lines. The co-extrusion technology uses a specialized flow-channel design to ensure uniform layer thickness across various materials.
Achieves high production throughput while maintaining strict tolerances. Features precise control over cooling rates and puller tensions to prevent deformation in medical tubes.
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, presenting "Smart Extrusion & High-Efficiency Innovation" solutions.
Read Article +
Discover how BAOD EXTRUSION provides critical, micro-tolerance extrusion lines for safety-critical detonating tube applications used in global mining and infrastructure operations.
Read Article +
An in-depth analysis comparing structural parameters, melt pressure stabilities, and automation layers of high-precision catheter multi-lumen lines between Chinese and European manufacturers.
Read Article +
Examining the compliance pathways, material testing regimes, and process validations required to supply automotive fluid-handling extrusion systems to global Tier-1 automotive manufacturers.
Read Article +
This review highlights the integration of automated inline metal insert insertion, high-speed flocking, and co-extrusion setups for 2026 EV door sealing profiles.
Read Article +
Baodie