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Method for preparing environmental-friendly cardboard paper by deinked sludge of wastepaper

A technology for deinking waste paper and deinking pulp from waste paper is applied in the field of papermaking to achieve the effects of overcoming difficulties in comprehensive development and utilization, reducing input costs and reducing manufacturing costs.

Active Publication Date: 2013-06-26
YUEYANG ANTAI IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to address the deficiencies in the prior art, provide a kind of deinking sludge that can effectively utilize waste paper, solve the problem of secondary pollution, utilize waste paper deinking sludge Method for producing environmentally friendly containerboard from ink sludge and recycled waste paper pulp

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Prepare 950kg mixed pulp according to the ratio of waste paper deinking pulp sludge 35: papermaking white water recycled pulp 20: pulping wastewater recycled pulp 30: chemical pulp residue 5: waste paper pulp 10, beating to an appropriate degree of beating and mixing first 35kg for sizing Agent alkyl ketene dimer (AKD), 4kg dry-strength agent, the paper stock goes online through the garden net machine, pre-pressing, main pressing, drying, calendering, coiling, and rewinding obtains 1000 kg of environmental protection containerboard. Concentration of papermaking net is 0.45%; original starch is sprayed onto the wet paper web at a concentration of %, pre-pressing pressure: 1# self-weight or uniform pressure, 2# pressure: 0.1-0.13 kg; main pressure: 0.3-0.45 kg / m2; positive pressure: 0.4-0.5 kg / m2; calendering pressure: 0.3-0.5 kg / cm; characteristics of papermaking sludge (waste paper deinking sludge) for the production of environmentally friendly boxboard: Quantitative we...

Embodiment 2

[0023] Prepare 950kg of mixed pulp according to the ratio of waste paper deinking pulp sludge 30: papermaking white water recycled pulp 20: pulping wastewater recycled pulp 20: chemical pulp residue 10: waste paper pulp 20, beating to an appropriate degree of beating, mixing and sizing with 35kg Agent alkyl ketene dimer (AKD), 4kg dry-strength agent, the paper stock goes online through the garden net machine, pre-pressing, main pressing, drying, calendering, coiling, and rewinding obtains 1000 kg of environmental protection containerboard. Concentration of papermaking net is 0.35%; original starch is sprayed onto the wet paper web at a concentration of %, pre-pressing pressure: 1# self-weight or uniform pressure, 2# pressure: 0.1-0.13 kg; main pressure: 0.3-0.45 kg / m2; positive pressure: 0.4-0.5 kg / m2; calender pressure: 0.3-0.5 kg / cm; papermaking sludge (waste paper deinking sludge) to produce environmentally friendly boxboard (grade C paper Tube paper) characteristics: the p...

Embodiment 3

[0025] Prepare 950kg of mixed pulp according to the ratio of waste paper deinking pulp sludge 20: papermaking white water recycled pulp 30: pulping wastewater recycled pulp 20: chemical pulp residue 5: waste paper pulp 25, beating to an appropriate degree of beating, mixing and sizing with 35kg Agent alkyl ketene dimer (AKD), 4kg dry-strength agent, the paper stock goes online through the garden net machine, pre-pressing, main pressing, drying, calendering, coiling, and rewinding obtains 1000 kg of environmental protection containerboard. Concentration of papermaking net is 0.30%; original starch is sprayed onto the wet paper web at a concentration of %, pre-pressing pressure: 1# self-weight or uniform pressure, 2# pressure: 0.1-0.13 kg; main pressure: 0.3-0.45 kg / m2; positive pressure: 0.4-0.5 kg / m2; calendering pressure: 0.3-0.5 kg / cm; papermaking sludge (waste paper deinking sludge) to produce environmentally friendly boxboard (liner boxboard Paper) characteristics: the pre...

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Abstract

The invention discloses a method for preparing environmental-friendly cardboard paper by deinked sludge of wastepaper. The method provided by the invention comprises the following steps of: mixing and pulping the deinked sludge of the wastepaper, recycled pulp of the papermaking white water, recycled pulp of the papermaking wastewater, slag of chemical pulp and wastepaper pulp for future use; then molding on a net, pressing, drying, calendering, winding and manufacturing paper with pulp. The method provided by the invention has the advantages of simple production process, reduced production cost and same tightness degree of the produced environmental-friendly cardboard paper rolls; the ration and the thickness are the same; the tightness degree of the paper and the ring crush compression resistance reach the quality standards which are higher than the C grade; and the paper is applied to the paper of the industries including each type of paper tube, yarn cops, fireworks and the like.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a manufacturing method of environment-friendly container board paper. Background technique [0002] In 2000, my country's paper and cardboard output was 30.5 million tons. By 2008, the national paper and cardboard production volume was 79.8 million tons, and the per capita annual consumption was 60 kg. In the past 8 years, the average annual growth rate of paper and cardboard production was 12.78%, and the average annual growth rate of consumption was 10.48%, both of which were higher than the average annual growth rate of my country's national economic GDP during the same period. After nearly 10 years of development, my country's paper industry has become the third largest paper-making country after the United States and Japan. my country has a large population and limited forest resources. The coverage rate is 16%, which is lower than the world average of 28%. Insufficien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C5/02D21H11/14D21H21/16D21H17/17D21H21/18D21F3/00D21F11/00
CPCY02W30/64
Inventor 陈建国
Owner YUEYANG ANTAI IND CO LTD
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