Resin Transfer Molding (RTM) and vacuum infusion are two widely used manufacturing processes for producing composite parts. Both methods involve the use of fiber reinforcements and resin systems, but they differ in process control, production efficiency and final part quality.
Choosing between RTM and infusion depends on factors such as production volume, cost, complexity of the part and required surface finish.
RTM is a closed-mold process where resin is injected into a mold containing dry fiber reinforcement. This method allows for high production repeatability, good surface finish on both sides and precise control of the manufacturing process..
Vacuum infusion is a process where resin is drawn into dry fibers using vacuum pressure. This method is widely used for producing large composite structures and offers flexibility in manufacturing complex shapes.
• RTM uses resin injection under pressure, infusion uses vacuum
• RTM provides better surface finish on both sides
• Infusion is more suitable for large structures
• RTM offers higher repeatability for serial production
• Infusion is often more cost-effective for low-volume production
• High production repeatability
• Smooth surface finish on both sides
• Suitable for series production
• Better control over fiber-resin ratio
• Lower tooling costs
• Suitable for large composite parts
• Flexible manufacturing process
• Reduced material waste
• Railway components
• Automotive parts
• Marine structures
• Industrial enclosures
• Construction elements
• Composite Manufacturing Process
• What are Composite Materials
• Advantages of Composite Materials
• Composite vs Steel