Paper making and fiber liberation – Processes and products – Multi-layer waterlaid webs or sheets
Patent
1987-11-03
1988-10-25
Lacey, David L.
Paper making and fiber liberation
Processes and products
Multi-layer waterlaid webs or sheets
162202, 162217, 162300, 162352, 162364, D21F 148
Patent
active
047801832
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 primary paper sheet prior to application of the secondary discharge, and a downstream compartment located on the downsteam portion of the forming blade. The forming blade is positioned directly beneath the secondary pulp discharge.
REFERENCES:
patent: 4176005 (1979-11-01), Bubik et al.
patent: 4416730 (1983-11-01), Schiel
patent: 4425187 (1984-01-01), Armstrong et al.
Hastings K. M.
Huyck Corporation
Lacey David L.
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