Paper making and fiber liberation – Processes and products – With coating after drying
Patent
1992-05-26
1993-09-07
Chin, Peter
Paper making and fiber liberation
Processes and products
With coating after drying
162175, 162184, D21H 1912
Patent
active
052425452
ABSTRACT:
Paper suitable for use in corrugated shipping containers is provided. Medium paper of this invention has a basis weight of at least about 15 pounds and a relatively high cross-direction crush resistance typically exceeding 2.4 pounds force per six inches width per unit base weight of the oven-dried product in lbs/1000 ft.sup.2. Linerboard of this invention has a correspondingly greater cross-direction crush resistance. The paper is preferably produced by applying starch solutions at high percent solids at elevated temperatures using a size press technique to provide at least about 30% of the starch in a defined inner zone of the paper sheet. The strength of the paper is improved through a carefully controlled distribution of the starch throughout the thickness of the paper.
REFERENCES:
patent: 2772604 (1956-12-01), Muggleton
patent: 4093016 (1978-06-01), Coleman
patent: 4191610 (1980-03-01), Prior
N. O. Bergh, D. Glittenberg, H. Weinbach, "Oberflachenbehandlung von Papier mit Leimpresse und Filmpresse," Jahrgang Heft 42:10A:V-40-V-47 (1988).
Casey, Pulp and Paper, 2nd Edition, p. 1114, Interscience Publishers, Inc., New York 1960.
Lee, Biological Methods in Paper Diagnosis, Paper Trade Journal, 107(6), pp. 53-59 (1938).
Paulapuro et al., "Effect of Pulp and Papermaking Variables on Linerboard Ring Crush," Pulp and Paper, pp. 142-145, 1983.
Simons, K. P., "Leimpresse Und Starke--Praktische Erfahrungen," 115(22) Wochenblatt Fur Papierfabrikation 1004 (1987).
Bradway Keith E.
Rudolph Richard F.
Chin Peter
Union Camp Corporation
Wissing William K.
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