Paper making and fiber liberation – Processes and products – Multi-layer waterlaid webs or sheets
Patent
1994-06-27
1996-11-12
Czaja, Donald E.
Paper making and fiber liberation
Processes and products
Multi-layer waterlaid webs or sheets
162109, 162194, 162118, 162132, D21F 1108, D21F 1104
Patent
active
055736386
ABSTRACT:
The invention provides a continuous paperboard sheet adapted to be slit longitudinally into a plurality of continuous paperboard plies, and to improved paperboard plies for forming single-layer, paperboard tubes. The paperboard sheet has a substantially constant width and includes a plurality of thick longitudinal sections and a plurality of thin longitudinal sections. The thick and thin sections are arranged in alternating relation across the width of the paperboard sheet. The sheet is slit longitudinally along the thin sections to provide a plurality of tube-forming paperboard plies.
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James P. Casey, editor of "Pulp And Paper, Chemistry and Chemical Technology", vol. III, 1981.
Hall Jerry S.
King Henry L.
Lennon George E.
Merritt Kevin R.
Czaja Donald E.
Fortuna Jos'e A.
Sonoco Products & Company
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