Paper making and fiber liberation – Processes and products – Non-uniform – irregular or configured web or sheet
Patent
1981-05-04
1982-08-17
Chin, Peter
Paper making and fiber liberation
Processes and products
Non-uniform, irregular or configured web or sheet
162162, 162123, 162129, 162130, 162146, 162201, D21H 524
Patent
active
043448186
ABSTRACT:
A method and apparatus especially adapted to produce a ply separable web requiring substantially less energy input for drying. The apparatus comprises a headbox having at least three stock flow channels, the outer channels being adapted to convey conventional aqueous stock solutions, with at least one inner channel adapted to convey airborne fibers. The resulting web, having a significant portion of the fibers in a dry state, requires less energy to dry, and the distinct layers provide shear zones therebetween which permit ply separation upon creping. Different fiber types may be provided in different layers depending upon product attributes desired, and the products may be conventionally dried or may be throughdried. An alternative embodiment requires the mixing of airborne fibers with an aqueous solution adjacent to or within the headbox, producing only surface wetting of the fibers and reduced interfiber bonding.
REFERENCES:
patent: 2881072 (1959-04-01), Clark
patent: 2913365 (1959-11-01), Osborne et al.
patent: 3954554 (1976-05-01), Curry et al.
Hong Sung H.
Nuttall David A.
Chin Peter
Croft Gregory E.
Herrick William D.
Kimberly-Clark Corporation
May Stephen R.
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