Paper making and fiber liberation – Processes and products – Multi-layer waterlaid webs or sheets
Patent
1987-08-24
1989-05-16
Lacey, David L.
Paper making and fiber liberation
Processes and products
Multi-layer waterlaid webs or sheets
162203, 162217, 162301, 162304, 162364, D21F 1104, D21H 106
Patent
active
048307092
ABSTRACT:
A multi-ply paper web forming apparatus utilizes first and second forming wires which travel in a co-running path for a portion of their length and which form a throat into which an aqueous slurry of paper pulp fibers is introduced. The slurry is dewatered between the co-running first and second forming wires upwardly and downwardly to quickly produce a substantially formed, but still moist, top ply web which is carried on the second forming wire onto a base ply web which has previously been formed on the wire of a single wire former. The first surface of the top ply web is brought into ply bonding engagement with the surface of the base ply web to produce a composite multi-ply web which has superior overall ply bond, retention and dryness before leaving the web forming section of a papermaking machine.
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Gray Paul T.
Turner James A.
Beloit Corporation
Campbell Raymond W.
Hastings K. M.
Lacey David L.
Mathews Gerald A.
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