Dual compartment vacufoil unit to eliminate secondary headbox chatter
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United States of America Patent
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Aug 29, 1989
Issued Date -
N/A
app pub date -
Jun 2, 1988
filing date -
Nov 3, 1987
priority date (Note) -
Expired
status (Latency Note)
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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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