PAPER COMPOSITION

The composition applies to the production of writing, printing and packing paper. The papers produced have good mechanical strength with higher filling agent retention, better sizing degree with a comparatively higher pH system and are more stable when ageing. The paper composition is the following:...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	VALCHEV, VLADIMIR I, BENCHEVA, SIJKA P, IVANOVA, NADEZHDA M, DIMITROV, DIMITAR P, NIKOLOVA, LIDIJA A
Format:	Patent
Sprache:	eng
Schlagworte:	IMPREGNATING OR COATING OF PAPER PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Beschreibung
Zusammenfassung:	The composition applies to the production of writing, printing and packing paper. The papers produced have good mechanical strength with higher filling agent retention, better sizing degree with a comparatively higher pH system and are more stable when ageing. The paper composition is the following: bleached and unbleached cellulose pulp, woody pulp and secondary fibrous materials; rosin glue 0.25 to 3.0 percent of the absolutely dry fibrous material; filling agent from 5 to 25 percent of the absolutely dry fibrous material; aluminium hydroxide paste and aluminium sulphate in ratio from 1:1 to 3:1, and the pH system is from 5.0 to 5.5.