VARI Process

▌Process Principle

Dry fiber reinforcement materials are laid in the mold, covered with a vacuum bag, and sealed. By evacuating air (applying negative pressure), resin is drawn from the tank into the fiber layers. The vacuum pressure drives the resin to infiltrate and fill the gaps between fibers. After curing, composite parts are formed.
 

▌Advantages

Low cost: No need for high-pressure equipment; molds can be made from low-cost materials (e.g., fiberglass, wood).

Suitable for large parts: Capable of forming meter-scale components (e.g., wind turbine blades, hulls).

High fiber content: Up to 60-70%, with mechanical properties close to those of autoclave processes.
 

▌Application Fields 

New energy: Wind turbine blades, photovoltaic brackets, etc.

Transportation: Yacht hulls, RV bodies, etc.

Construction: Large load-bearing components, bridge formwork, etc.
 

▌Equipment Used

Vacuum Pump System, Resin Tank, Industrial Oven, Mold.