Describes the advantages of a multi-layer hydraulic headbox. Describes major components, and how they all work together to fulfill the headbox objectives. Includes stock inlet headers, dilution profiling systems, recirculation lines and valves, turbulence-inducing elements, slice opening, and various stock jet adjustment mechanisms. Also includes some protection and care guidelines for the headbox and forming fabrics.
•Describe the purpose and objectives of the headbox on a paper machine
•Describe the advantages of a multi-layer headbox
•Identify and locate the major components of a multi- layer headbox
•Identify stock and recirculation flows
•Describe the available adjustments to the headbox
•Identify protection and care guidelines for the headbox and forming fabrics
