Custom PVC Automotive Sealing Strip Extrusion Line Manufacturer & Factory

Co-extruding materials with vastly different rheological characteristics (e.g., rigid PVC core Shore D 80 and plasticized soft PVC bulb Shore A 60) presents significant challenges in flow velocity matching. BAOD designs custom streamline crossheads using computerized rheology simulations. Each flow canal features independent thermal regulation zones and micro-adjustable choke restrictors. This ensures the different polymer melts reach the die land at identical velocities and pressures, preventing profile curling, delamination, and uneven wall thickness.

Yes. Our automotive sealing lines can be integrated with automated steel strip payoff stands, wire knitting/stamping units, pre-heaters, and continuous metal skeleton guiding fixtures. The crosshead die is engineered with a specialized feed port allowing the stamped steel or wire carrier to pass through while polymer melt encapsulates it cleanly without air entrapment or off-center deviation.

Flexible and rigid PVC formulations often contain calcium carbonate (CaCO3) fillers and flame retardants that cause abrasive and corrosive wear. BAOD utilizes 38CrMoAlA barrels and screws with deep ion-nitriding treatment (depth 0.5–0.7 mm, surface hardness ≥950 HV), or optional PTA bimetallic tungsten carbide alloy coatings. This extends barrel service life by over 300% when running heavily filled compounds.

Downstream elongation or compressive distortion is a primary cause of sealing profile failure. BAOD utilizes high-speed industrial EtherCAT bus communication linking the extruder screw drive, the haul-off servo caterpillar puller, and the optical laser measurement system. Vacuum calibration tables are motorized with 3-axis micro-positioning, allowing micro-fine adjustments during production. When line speed fluctuates, haul-off pull rates self-adjust within milliseconds to keep linear mass and wall thickness within ±0.03 mm.

To generate an optimized turnkey proposal, provide: 1) Engineering cross-sectional 2D/3D CAD drawings indicating critical tolerances and Shore hardnesses; 2) Polymer resin compound datasheets (melt flow index, specific gravity, processing temperatures); 3) Required maximum line velocity (m/min) and capacity throughput (kg/h); 4) Downstream processing specifications (e.g., inline punching, flocking, adhesive tape application, cut-to-length flying shear or continuous coiling); 5) Local utility electrical voltage, frequency, and factory space footprint.

Through our Global Service platform, BAOD provides dispatch of senior field commissioning engineers to customer production facilities across North America, Europe, Southeast Asia, and South America. We manage mechanical levelling, electrical hookup, dry/wet trial runs, operator maintenance training, and initial parameter tuning until continuous Cpk standards are met. Remote VPN diagnostics enable real-time PLC software updates and troubleshooting anytime.