The headbox is a key part of the paper machine. The function of the headbox is to change the paper material pumped by the square pump from the pipe flow into a uniform, rectangular slurry flow with the same width as the paper machine, and the longitudinal flow velocity is uniform.

The headbox is a key component of a modern paper machine and a key hub connecting the two parts of "conveying" and "forming". It is also one of the fastest growing parts of modern paper machines, especially new and modern high-speed paper machines, with a speed of several kilometers per minute and a