Automotive Composite PU Spray-Transfer Molding Solution
Plan polyurethane spray-transfer molding around reinforcement preparation, metered resin spraying, preform handling, compression molding and finishing.
PU Spray-Transfer Molding Machine
Haifeng launches the HF-STM PU Spray-Transfer Molding Automatic Forming Machine for automotive composite parts, integrating unwinding, cutting, automatic loading, automatic PU spraying, release agent spraying, molding and curing and automatic unloading into one automated line. In the Spray-Transfer Molding process, polyurethane is metered and mixed under high pressure, sprayed onto continuous fiber fabric in atomized form to wet the reinforcement evenly, then transferred into the mold and cured under heat and pressure. Compared with hand lay-up, STM delivers high metering accuracy, even impregnation, low porosity and stable mechanical properties for large thin-wall parts.
Fully Automatic Turnkey Line
Integrates unwinding, cutting, robot loading, PU spraying, molding and unloading into one automated line.
Precision Metering & Traceability
High-pressure metered spraying with real-time data collection for full batch traceability.
Customized to large headliners and battery covers, the line is delivered as a turnkey project with process planning, commissioning, training and after-sales support.
Production Process
All steps are automatically linked by the control system to reduce waiting and manual intervention.
Multi-Layer Fabric Feeding
Continuous fiber fabric is unwound with tension control and edge guiding, then cut automatically by product developed size.
Automatic Sheet Loading
A 6-axis industrial robot grips, transfers and loads cut sheets automatically with high repeatability.
High-Pressure Metered Spraying
Two PU components are metered and mixed at the set ratio and sprayed in atomized form to wet the reinforcement evenly.
Technical Parameters
Typical configuration and illustrative figures, subject to process design.
| Unit | Configuration |
|---|---|
| Unwinding and cutting | Multi-layer unwinding, tension control, automatic cutting |
| Automatic loading | 6-axis robot, automatic gripping and loading |
| PU spraying | High-pressure metering pumps, mixing head, automatic spraying |
| Release agent | Automatic spraying system |
| Molding | Frame-type hydraulic press, heating and temperature control |
| Automatic unloading | Robot removal, conveying and buffer |
| Control system | International first-line PLC, industrial Ethernet, HMI |
| Informatization | Data collection, batch traceability |
| Parameter | Value |
|---|---|
| Line cycle time | 6 min/piece |
| Materials | Continuous fiber fabric, metal sheet, polyurethane |
| Automation rate | 80% to 100% |
| Press type | Frame type, tonnage and platen customized |
| Robot | 6-axis robot, high repeatability |
| Dosing accuracy | High-pressure metering and mixing of PU components |
| Control system | International first-line brand, industrial Ethernet |
| Informatization | Real-time data collection, digital production management |
Why Choose Haifeng's STM Line
Engineered for high-quality, low-cost mass production of automotive composite parts through automation, digitalization and customization.
Fully Automatic Process
Much less manual labor with lower labor cost impact across the whole line.
Precision Metered PU Spraying
Accurate dosing, consistent parts and low material loss.
Continuous Fiber Reinforcement
High strength and light weight for large thin-wall composite parts.
Fully Traceable & Modular
Control plus informatization for batch traceability; modular units for easy line expansion.
Related Projects
Review the material, product geometry, equipment scope and reference conditions within each record when assessing a comparable application.
Production Planning FAQ
Selection, supply scope and validation for this production route.
What does spray-transfer molding coordinate?
Is the published cycle the full production cycle?
Can existing presses and tooling be retained?
What is required for a preliminary proposal?
Get a Free Quote
Tell us your target part and capacity, and our engineers will provide a customized STM line proposal. Our team will reply within one business day. Once requirements are clear, we provide a preliminary proposal within two business days.
