Thin printing paper and a process for manufacturing said paper

Details Thin printing paper and a process for manufacturing said paper Thin printing paper and a process for manufacturing said paper

1995-09-12

1999-06-29

Silverman, Stanley S.

Paper making and fiber liberation

Processes and products

With coating after drying

162136, 162135, 162184, 162206, 162175, 162177, 1621818, 488342, 488380, 488403, 427211, 427209, D21H 1944, D21H 1940

Patent

active

059164204

ABSTRACT:
The present invention relates to a thin printing paper with a weight per unit area in the range below 49 g/m.sup.2 and which contains wood and which is provided with surface pigmentation and which incorporates a mixture of a swellable coating silicate (sodium bentonite) and, for the remainder, conventional coating pigments as the pigment and which, in addition, contains only bonding agent that is a natural organic bonding agent, essentially starch. Even if only lightly calendered, the paper is equally well suited for rotogravure printing and for rotary offset printing. It is preferred that the paper also contain a proportion of processed fibres obtained from old-paper.

REFERENCES:
patent: 3276359 (1966-10-01), Worthen et al.
patent: 4064304 (1977-12-01), Fujita et al.
patent: 5242545 (1993-09-01), Bradway et al.
patent: 5437925 (1995-08-01), Macaulay et al.
patent: 5494509 (1996-02-01), Kruythoff et al.
Casey, James P. "Pulp and Paper: Chemistry and Chemical Technology", vol. II, 1952, pp. 938-942, Apr. 1952.
Eklund et al. "Paper Chemistry an Introduction", DT paper science Finland, pp. 12-13 and 213-214, Dec. 1991.
Paul Sennett et al., Influence of Pigment and Binder Type on Performance of Lightweight Coated Sheets, May 15-18, 1983, Tappi Coating Conference (San Francisco), pp. 17-22.
N.-O Bergh et al., Evaluation of Coating Binders for ULWC-Papers, May 17-21, 1987, Tappi Coating Conference (Houston), pp. 151-156.

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