FIELD: pulp-and-paper industry. SUBSTANCE: original fibrous semiproduct, in particular, substrate containing unbleached sulfate pine-wood pulp with swelling index 140-150%, is ground and, from ground mass, suspension for different layers of paper web is prepared. Further, to suspension for formation of individual layers with mass constituting 50-100% on total mass of individual layers, polyamine/amido/epichlorohydrin resin is added in amount 0.02- 0.14% on mass of absolutely dry fibers of each individual layer. Formed individual layers are joined and thus obtained layered paper is pressed and dried. EFFECT: improved procedure. 2 cl, 3 tbl
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Authors
Dates
1998-01-10—Published
1996-09-27—Filed