Vacuum infusion is a manufacturing process used to create composite materials, often in industries like aerospace and automotive. It involves placing dry reinforcement materials, such as fiberglass or carbon fiber, in a mold. A vacuum is then applied to remove air, allowing a resin to flow into the mold and saturate the fibers. This method ensures a strong bond between the fibers and resin while minimizing air bubbles, which can weaken the final product. Vacuum infusion is favored for its efficiency and ability to produce lightweight, high-strength components with a smooth finish.