SU599000A1 - Paper mass for making corrugated paper and board - Google Patents

Description

(54) BUILDING MASS FOR MANUFACTURING

CORROSED PAPER AND TARNOGOKARTON

one

The invention relates to the field of: lulose and paper industry and concerns the production of corrugated paper and containerboard.

Known paper pulp for the manufacture of paper for corrugating corrugated cardboard based on unbleached pulp of high yield from a mixture of hardwood and softwood 0-3

The main disadvantage of such paper pulp is the low mechanical strength of the finished product.

The aim of the invention is to increase the mechanical strength of paper and paperboard.

This is achieved by the fact that paper pulp based on sulphate unbleached pulp from a mixture of hardwood and softwood species additionally contains finely chopped reed hemicellulose with a grinding degree of 85 in an amount of 5-10% by weight. In the composition of the mass, sulphate or monosulphite-reed is used as reed hemicellulose.

hemicellulose.

EXAMPLE 1 Unbleached sulphate cellulose is taken from a mixture of hardwood and coniferous woods and milled in a roll to 30 ° SR. Then the sulphate cane semi-cellulose is ground to a slime-like mass, the degree of grinding is 85 SR. Mix it with sulphate pulp in the following ratio, weight,%:

Sulfate non-bleached pulp from a mixture of hardwood and softwood95

Reed hemicellulose 5.

PRI and m er 2. Take sulphate unbleached pulp from a mixture of hardwood and softwood and grind in a roll to 30 ° SR. The sulphate cane hemicellulose is then subjected to grinding to a slime-like mass, the degree of grinding is 90 HR. Mix it with sulphate pulp in the following ratio, wt.%:

Sulfate unbleached pulp from a mixture of hardwood and softwood Reed semi-cellulose 7.5. example 3. Take sulfate

Unbleached pulp from a mixture of hardwood and softwood and grind in a roll to. The monosulfite cane hemicellulose is then milled to produce

the mucus-like mass, the degree of grinding, is mixed with sulphate celulose in the following ratio, wt. %:, Sulfate non-bleached cellulose from a mixture of hardwood and coniferous species of wood. Reed hemicellulose 10. The table shows the data of the physicomechanical parameters of the known material from 100% unbleached sulphate

Weight 1 m, g

Burst resistance, kgf / cm

Stiffness on the destruction of the ring, kgf / cm

Explosive load, kg

Kink resistance, number of double kinks

Claims (3)

1. Paper pulp for the manufacture of corrugated paper and containerboard based on sulphate unbleached pulp from a mixture of hardwood and softwood wood, so that, in order to increase the mechanical strength of paper and cardboard, it additionally contains cane hemicellulose with the degree of grinding 85 - 95 ° SR in the following ratio of components, wt.%: Sulphate non-bleached cellulose from a mixture of hardwood and softwood 90-95 wood and reed hemicell 5-10. 2.7 294290 22.2 9,39,2 19.2 2,352,34 23.4 58,057,0 1390 1370 1380  2. Mass under item 1, distinguished a. so that as reed hemicellulose it contains sulfate reed hemicellulose. 3. The mass according to claim 1, characterized in that it contains monosulphite cane hemicellulose as cane hemicellulose. . , Sources of information taken into account in the examination: 1. Technological regime for the production of paper for corrugation and paperboard at the Astrakhan Pulp and Paper Mill. pulp from a mixture of hardwood and softwood and the proposed paper pulp. The offered paper pulp can be applied in the pulp and paper industry using cane as a raw material. The use of an additive with highly ground cane hemicellulose allows improving the quality of the produced paper and cardboard.