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A headbox has four basic functions. One, to deliver the stock uniformly onto the forming fabric, also called the wire, in the cross machine direction and the machine direction. Two, to create controlled turbulence to reduce fiber flocking and develop a uniform fiber distribution across the wire. Flocking is the tendency of fibers to clump together. Three, to coordinate the speed of the stock jet with the speed of the wire. This relationship plays a major roll in sheet formation and fiber angle or orientation. Four, and ensure that the flow of stock from the slice opening strikes the wire at the correct angle and location.