Precision Extrusion Equipment Portfolio
Explore our core engineering extrusion lines and modular downstream stations engineered for medical and technical high-precision polymers.
Custom SPS-Dh Auto Precision Winding Displacement Coiler
Ultra-tension sensitive auto-displacement coiler engineered for flexible medical tubing and thin-wall dialysis conduits without ovality distortion.
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China Precision Small Diameter Tube/Pipe Extrusion Line
Dedicated continuous micro-tube extrusion platform delivering sub-millimeter tolerances for catheter bodies, drainage lumens, and medical connectors.
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Custom TKC Series Crawler-Type Puller Product
Servo-driven dual caterpillar haul-off with multi-axis synchronous speed regulation, eliminating micro-slippage during delicate medical tube sizing.
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Custom Precision Medical Tube Extrusion Line
Full cleanroom-compliant extrusion cell configured for medical-grade plasticized PVC, TPU, and TPE dialysis line fabrication with closed-loop sizing.
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China Vacuum Calibration Cooling Table Manufacturer
Stainless steel SUS304/316 multi-stage vacuum calibration bath featuring negative pressure precision tuning down to ±0.1 kPa for roundness retention.
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China SJ Series Single Screw Extruder Manufacturer
High-L/D barrier screw plastification unit with bimetallic barrel, specialized for low-shear, zero-degradation medical compound processing.
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China PU (Polyurethane) Precision Tube Extrusion Line
High-elasticity TPU/PU tube extrusion line specialized for biocompatible vascular lines, pump segments, and non-thrombogenic fluid pathways.
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Custom PC, PMMA, PS Lampshade Extrusion Line Factory
High-optical-transparency technical profile extrusion line incorporating precision melt-metering pumps and stress-free sizing mechanisms.
View DetailsEngineering Paradigm: Dialysis Bloodline & Fluid Pathway Extrusion
In the biomedical manufacturing domain, blood tubing lines for extracorporeal blood purification—including Hemodialysis (HD), Continuous Renal Replacement Therapy (CRRT), and Peritoneal Dialysis (PD/CAPD)—represent the pinnacle of thermoplastic extrusion precision. Unlike generic medical catheter conduits or standard IV infusion sets, dialysis tubing is subjected to demanding mechanical dynamic stresses inside roller peristaltic pumps, continuous hemodynamic arterial-venous blood pressures, and aggressive sterilization regimens.
BAOD EXTRUSION engineers turnkey extrusion lines built specifically to tackle these physiological and rheological challenges. Utilizing our 25-year Taiwan-origin engineering foundation combined with our advanced 16,000 m² cleanroom equipment manufacturing base in Jiangsu, we provide OEM device manufacturers and tier-one medical contract packagers with high-stability lines capable of holding continuous dimensional concentricity of over 98% under high line speeds up to 120 m/min.
Customized Extrusion Configurations by Medical Subsystem
Extrusion die flow channels, polymer melt residence times, and vacuum cooling dynamics are precisely tailored to the mechanical demands of each dialysis circuit component.
Peristaltic Pump Segment Tubing
Specially plasticized medical PVC, aliphatic TPU, and silicone-alternative TPE formulations requiring exceptional elastic memory and spallation resistance under high-cycle roller fatigue.
- Zero micro-bubble melt conditioning
- Spallation-resistant inner wall smoothness (Ra < 0.1 µm)
- Strict ID retention under continuous cyclic occlusion
Arterial & Venous Blood Circuit Lines
Dual-color co-extruded or color-striped PVC lines providing unmistakable visual identification for arterial (red) and venous (blue) blood paths during emergency clinical interventions.
- Integrated stripe co-extrusion crossheads
- Kink-resistant formulation processing
- Non-DEHP, TOTM, and DOTP plasticizer stability
CAPD & CRRT Micro-Bore Drain Lines
Thin-wall continuous ambulatory peritoneal dialysis conduits and auxiliary heparin infusion lines requiring high flexibility, tensile strength, and ultra-low extractables.
- Multi-lumen micro-extrusion pin assemblies
- Rapid batch-to-batch colorant switching
- High clarity for visible particulate detection
Advanced Extrusion Architecture & Future Roadmap
Transitioning medical extrusion from traditional analog empirical tuning to closed-loop digital twinning, cyber-physical monitoring, and non-destructive in-line validation.
Melt Rheology Control
Ultra-low shear screw geometries combined with integrated melt-gear pumps deliver zero-pulsation melt feed directly into the spiral mandrel die.
Closed-Loop Sizing
Multi-axis laser OD gauges and ultrasonic wall-thickness monitors feed real-time adjustments back to the puller servo drives and vacuum pumps.
21 CFR Part 11 Digital
Built-in industrial SCADA systems automatically capture comprehensive batch records, thermal audit trails, and operator permission logs for FDA compliance.
Cleanroom Engineering
All-enclosed stainless steel SUS304 shrouding, laminar airflow interface profiles, and isolated electrical cabinets prevent particulate migration.
Dialysis Tubing Extrusion Line Technical Benchmark
| System Subassembly | Standard Configuration | Medical White-Paper Specification | Operational Benefit |
|---|---|---|---|
| Extruder Unit | Single Screw SJ45 / SJ55 | 30:1 to 32:1 L/D Nitrided / Bimetallic SACM645 | Gentle plasticization, no plasticizer degradation |
| Extrusion Die Head | Adjustable Centering Die | SUS316L Spiral Mandrel with mirror finish (Ra < 0.05µm) | Eliminates weld lines and internal flow stagnation |
| Melt Metering Pump | Optional / Open Loop | High-precision gear pump with PID melt pressure control | Reduces pressure surge to within ±0.1 MPa |
| Vacuum Calibration | Single chamber cooling | Dual-chamber stainless steel with PID water temp (±0.2°C) | Prevents thermal stress, preserves roundness |
| Haul-Off Unit | Crawler or Belt Puller | Multi-track servo drive with micro-synchronous encoder | Zero speed flutter; protects soft elastic tubes |
| In-Line Inspection | Single-axis laser gauge | Dual/Tri-axis laser + 4-point ultrasonic wall thickness | Automated reject gate sorting & Cpk documentation |
China Factory Strengths & Global Market Presence
Combining Western precision design paradigms with the unmatched engineering agility, speed, and cost efficiency of China's advanced manufacturing corridor.
Yangtze River Delta Industrial Cluster
Located in Haian, Nantong, Jiangsu, BAOD operates within the world's most concentrated precision machining ecosystem. Critical metallurgy, specialized heat treatments, precision servo motors, and medical-grade sensors are procured and verified within a 100km radius.
CapEx & Total Cost Advantage
BAOD extrusion lines offer a 35% to 50% capital expenditure reduction compared to equivalent German, Swiss, or Italian systems, without sacrificing gauge consistency, Cpk reliability, or mean-time-between-failures (MTBF).
Global Field Engineering Agility
We provide full turnkey commissioning, comprehensive FAT/SAT support, in-situ cleanroom operator training, and an active inventory of wear-parts (screws, barrels, die pins, vacuum calibration sleeves) ready for international air dispatch within 48 hours.
International Compliance & Validation Protocol (DQ/IQ/OQ/PQ)
Medical dialysis device manufacturers operate under strict international regulatory scrutiny from bodies such as the US FDA (21 CFR Part 820), the European Union (EU MDR 2017/745), and the National Medical Products Administration (NMPA). A precision extrusion line is not merely a piece of industrial hardware; it is a validated manufacturing process asset.
BAOD delivers complete validation support packages designed to shorten your internal cleanroom qualification timeline by up to 60%. Each custom dialysis extrusion line comes backed by:
Dialysis Tubing Extrusion Technical Inquiries
Engineering answers addressing polymer rheology, cleanroom integration, concentricity maintenance, and regulatory validation.
How does BAOD maintain tight wall-thickness tolerances (±0.015mm) on soft PVC dialysis lines?
We achieve this through a synchronized four-tier control loop:
1. Melt Homogeneity: A dedicated 32:1 L/D barrier screw prevents localized shear burning and eliminates melt density fluctuations.
2. Positive Displacement Metering: An integrated melt gear pump stabilizes flow to under ±0.1 MPa pressure surge.
3. Vacuum Tank Dynamics: Dual-chamber stainless vacuum calibration baths with automated liquid level and closed-loop proportional vacuum regulation prevent pulsating deformation.
4. Continuous Laser-Servo Feedback: Real-time laser gauging interfaces directly with our high-torque servo haul-off to automatically speed up or slow down haul rates within milliseconds.
Can BAOD lines process non-DEHP, TOTM, and DOTP medical plasticized formulations?
Yes. Non-phthalate plasticizers (such as TOTM, DOTP, DINCH, and ATBC) exhibit distinct rheological viscosity profiles and lower thermal degradation limits compared to conventional DEHP (DOP). BAOD customizes screw flight depths, compression ratios, and cooling zone liquid circulation channels to ensure gentle plastification without shearing or degrading the plasticizer bond, preventing post-sterilization leaching.
How do you resolve tube spallation and fatigue failure in peristaltic blood pump segments?
Spallation (shedding of microscopic polymer flakes into the patient's bloodstream) is caused by micro-voids, internal skin stress, and uneven cross-sectional crystallization during rapid cooling. BAOD utilizes mirror-polished SUS316L die pins with precision laminar air cooling zones before entry into the vacuum tank. This produces a micro-smooth interior surface (Ra < 0.1 µm) with zero stress concentrations, dramatically prolonging flexural fatigue life during continuous 72-hour CRRT roller pumping.
What documentation and support are provided for cleanroom ISO 14644 Class 7/8 installations?
Every BAOD medical line is built with stainless steel covers, brushless servo drives, cleanroom cable tracks, and enclosed vacuum water exhaust circuits to minimize air particulate release. We supply comprehensive equipment qualification dossiers (DQ, IQ, OQ protocols), electrical diagrams conforming to IEC/UL standards, software validation documentation, and material traceability certificates for all stainless steel product-contact parts.
Can the line simultaneously co-extrude red and blue identification stripes for blood circuits?
Yes. We integrate our SJ25 or SJ30 satellite single-screw extruders with specialized multi-manifold crossheads. The color stripe (arterial red or venous blue) is embedded into the outer layer of the clear tube wall in a monolithic molecular bond, preventing any delamination or internal lumen contamination.
Precision Tube, Profile & Cutting Solutions
Complete your medical and technical manufacturing plants with our certified precision downstream, profiling, and high-speed cutting machinery.
China PA/PE/PP/PVC Single Wall Corrugated Pipe Extrusion Line
Continuous high-velocity corrugated hose line featuring vacuum-assisted forming blocks for medical breathing circuits and cable shielding conduits.
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China QYP Series Belt Puller Manufacturer, Factory
High-precision multi-belt haul-off system engineered with high-friction, non-marking silicon belts for non-slip traction on high-speed small tubes.
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China FQ Series Rotary Fly Knife Cutter Factory
High-speed rotary fly-knife cutting unit synchronized with haul-off velocity to produce burr-free, perpendicular cuts on flexible medical tubes.
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China Precision Profile Extrusion Line Manufacturers
Engineered for specialized medical and engineering polymer cross-sections, multi-lumen profiles, and structural co-extruded elements.
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China LDPE, HDPE, PP Precision Tube Extrusion Line
High-efficiency polyolefin tube extrusion system engineered for fluid transfer manifolds, laboratory suction lines, and industrial micro-tubes.
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China High Speed PVC Medical Tube Extrusion Line
Flagship medical tubing platform engineered for infusion sets, oxygen supply tubes, and disposable bloodline components with ultra-fast output.
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Custom Puller & Fly Knife Cutter Machine Manufacturers
Integrated compact haul-off and servo cutting station engineered for space-constrained cleanroom facilities demanding high cut accuracy.
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Custom TPV, PVC Automobile Sealing Strip Extrusion Line
Heavy-duty multi-durometer profile extrusion system designed for precision vehicle sealing strips, glass-run channels, and technical elastomeric seals.
View DetailsConsult with Our Medical Extrusion Engineering Team
Request a custom engineering proposal tailored to your product drawing, resin compound, required cleanroom line velocity, and dimensional tolerance specifications.