Dual compartment vacufoil unit to eliminate secondary headbox ch

Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...

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162304, 162352, 162364, D21F 148

Patent

active

048614327

ABSTRACT:
A dual compartment vacufoil unit for making linerboard grade or other multi-layer paper comprising a dual compartment vacufoil and a forming blade and a method of using same. The dual compartment vacufoil unit is positioned beneath the forming blade, with an upstream compartment located on the upstream portion of the forming blade evacuating air through a primary paper sheet prior to application of the secondary discharge, and a downstream compartment located on the downstream portion of the forming blade. The forming blade is positioned directly beneath the secondary pulp discharge.

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