Introduction to Vacuum Infusion
The vacuum infusion process (VIP) is a production process used to make parts out of fiber-reinforced polymers (FRP). Vacuum infusion uses negative pressure to pull-out air, while impregnating the reinforcement with resin.
How VIP Works
First, dry materials are place on either a male or female mold surface. Often, stitched or woven fabrics used, and many of which are specially designed to promote resin flow.
On the part perimeter of the material, a semi rigid counter mold or a thin plastic vacuum bag is sealed. Using a vacuum pump, air is evacuated and atmospheric pressure is applied to consolidate the dry materials. Once this occurs a vacuum cavity is created. Through resin feeder lines, resin is introduced into the cavity.
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