The earliest used headbox was the open ram headbox, which was produced before the Fourdrinier brothers invented the Fourdrinier paper machine in 1804.

The headbox is a key component of a modern paper machine and the key hub connecting the two parts "conveying" and "forming".

Throughout the modern new high-speed headbox paper machine, it basically has the following main features:(1) Adopt high-efficiency hydraulic slurry rectifying components. Through the design of different structures and sizes of the hydraulic slurry rectifying elements

The earliest used headbox paper machine​ was an open headbox with a pulping gate, which was produced in 1804 before the Fourdrinier brothers invented the Fourdrinier paper machine.

The functions of any form of headbox paper machine are specifically undertaken and coordinated by the three parts of the pulp distributor, the rectifier and the paper feeder.

A good headbox paper machine must have the following performance:(1) A paper web with a uniform and stable basis weight can be copied, and there is no longitudinal stream on the paper web;