Pultrusion Molding Process

▌ Process Principle

After continuous fiber bundles (or fabrics) are impregnated with resin, they are pulled by a puller through a heated forming mold. Inside the mold, resin curing and shape setting are completed, and linear profiles (such as rods, tubes, plates, and special-shaped profiles) are continuously extruded.

▌ Advantage

Extreme Efficiency: Continuous production with a speed of up to 1-5 m/min, suitable for mass production of long profiles;

Excellent Mechanical Properties: Fibers are continuously arranged along the length direction, resulting in extremely high axial strength;

Low Cost: High degree of automation, with a material utilization rate of >95%.

▌ Application

New Energy: Wind turbine blade spars, solar brackets, etc.;

Construction Field: FRP profiles (guardrails, purlins), bridge cables, etc.;

Transportation Field: Automotive anti-collision beams, rail transit handrails, etc.;

▌ Equipment Used

Yarn Rack,Resin Impregnation Device,Molding Die,Pultruder Machine ,Cutting Machine,Curing Oven.