Automotive Dashboard PU Backfoaming Line in China

Illustration notice. Process illustrations are not verified photographs of this installation.

Project reference basis. Figures and configuration details are reported in the supplied project brief. They are reference values for the stated application, rather than verified acceptance results or a guarantee for another installation. Confirm the source records, material, tooling, operating schedule and test method when assessing a comparable project.

Haifeng successfully engineered and commissioned an automated polyurethane backfoaming workcell for a premier Chinese automotive cockpit manufacturer, achieving void-free filling in ultra-narrow <5mm crevices and a 100% pass rate in passenger airbag (PAB) deployment tests. The project delivered a customized dual-component high-pressure dosing machine with an onboard industrial PLC control cabinet, dynamic mold temperature conditioning skids, and digital interface synchronization for the customer's hydraulic tilting clamping press.

Prior to commissioning, the manufacturer experienced quality inconsistencies when producing soft-touch instrument panels. High-viscosity low-pressure dispensing frequently created microscopic air traps along the laser-weakened airbag deployment seam, leading to deployment delays and uneven skin tearing during extreme temperature certification tests. The customer required a high-pressure dispensing solution capable of closed-loop stoichiometric ratio locking, low-cavity-pressure laminar injection, and precise mold temperature balancing.

Operating since August 2025 on a continuous two-shift production schedule across a 240 m² footprint, the workcell delivers consistent component repeatability. By implementing Haifeng's closed-loop Ratio Lock flow algorithms and anti-drip impingement heads, the client consistently manufactures luxury soft-touch dashboards meeting rigorous automotive safety and tactile standards.

Concept illustration: The process image is a concept illustration used to explain the equipment arrangement; it does not document the delivered site.

Haifeng deployed a high-pressure polyurethane backfoaming platform engineered for semi-rigid foam formulations:
1. Precision Stoichiometric Ratio Lock: Servo-driven axial piston pumps meter precursors with ±0.5% accuracy, ensuring uniform cellular density across the airbag tear line.
2. Tilting Clamp Synchronization: The master PLC digitally interfaces with the hydraulic press, coordinating multi-axis tilt angles (up to 60°) to vent cavity air naturally during injection.
3. Dual-Zone Thermal Stability: Dynamic TCU loops maintain upper and lower mold platens within ±0.5°C, ensuring uniform exotherm across 4.5mm thin-wall zones.
4. Clean Mechanical Needle Cut-Off: An L-shaped self-cleaning high-pressure mixing head executes instantaneous 0.3s shut-offs without chemical solvent flushes.