Surface sizing composition and application thereof

A technology of surface sizing and surface sizing starch, applied in the field of papermaking, can solve the problems of unsolved overprinting, fast drying speed of high-speed printing ink, and printing ink drying speed is not fast enough. Eye damage reduction effect

Active Publication Date: 2014-05-07
HAINAN JINHAI PULP & PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The patent application number is CN87101416.5 (name: a high-filler papermaking process using straw and wood pulp as fiber raw materials, patent disclosure date: August 9, 1989), and the surface sizing formula used is hydroxypropyl Base starch, polyvinyl alcohol, zirconium carbonate amide, 1661 water-resistant agent, calcium stearate, microcrystalline wax, whitening agent VBL and water; among them, zirconium carbonate amide is used as a crosslinking agent for polyvinyl alcohol to increase paper strength However, there is a shortcoming that the drying speed of the printing ink is not fast enough, and the problem of overprinting has not been solved.
[0005] (2) Patent applications CN01131571.7 (name: Italian poplar APMP disc mill bleaching pulping process, patent disclosure date: July 17, 2002) and CN200410023263.0 (name: special pigment finishing offset paper and its manufacturing method , patent disclosure date: February 23, 2005) pigments, starch, hydroxymethyl cellulose (CMC) and water repellent were used, and the existing problem was also that the fast drying speed of high-speed printing ink was slow

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 1) Pulping, and adding chemical additives to the prepared pulp; then dehydrating the pulp in the wire section, pressing and drying before;

[0053] The pulp is: hardwood (eucalyptus) bleached chemical pulp accounted for 70%, coniferous (pine) wood bleached chemical pulp accounted for 20%, high-yield pulp (bleached chemical thermomechanical pulp) 10%, after The freeness of long fibers is controlled to 400ml, and the freeness of short fibers is controlled to 380ml.

[0054] The chemical additives added are: alkyl ketene dimer (AKD), the dosage is 10 kg / ton paper, filler (precipitated calcium carbonate) 150 kg / ton paper, inner starch 10 kg / ton paper, other functional additives It is positive polyacrylamine, silica sol and negative polyacrylamide, which are added according to demand, specifically 0.1 kg / ton paper, 3 kg / ton paper and 0.2 kg / ton paper.

[0055] 2) Sizing on the paper surface that is not completely dry;

[0056] The surface sizing composition is as follows: ...

Embodiment 2

[0061] 1) Pulping, and adding chemical additives to the prepared pulp; then dehydrating the pulp in the wire section, pressing and drying before;

[0062] Pulp: the amount of hardwood (eucalyptus) bleached chemical pulp accounts for 60%, the amount of softwood (pine) wood bleached chemical pulp accounts for 20%, and the amount of high-yield pulp (bleached thermomechanical chemical mechanical pulp) accounts for 20%. , Pulping and refining (or deflaking), wherein the freeness of long fibers is controlled to 420ml, and the freeness of short fibers is controlled to 400ml.

[0063] The chemical additives added are: alkenyl succinic anhydride (ASA) 1.2 kg / ton paper, filler (precipitated calcium carbonate) 300 kg / ton paper, inner starch 12 kg / ton paper, other functional additives are positive polyacrylamine, Silica sol and negative polyacrylamide are added according to demand, specifically 0.15 kg / ton paper, 2.5 kg / ton paper and 0.15 kg / ton paper.

[0064] 2) Sizing on the paper sur...

Embodiment 3

[0070] 1) Pulping, and adding chemical additives to the prepared pulp; then dehydrating the pulp in the wire section, pressing and drying before;

[0071] Pulp: the amount of hardwood (poplar) bleached chemical pulp accounts for 50%, the amount of softwood (spruce) bleached chemical pulp accounts for 20%, and the high-yield pulp accounts for 30%. ), wherein the freeness of long fibers is controlled to 400ml, and the freeness of short fibers is controlled to 400ml.

[0072] The chemical additives added are: alkenyl succinic anhydride (ASA) 1.0 kg / ton paper, filler (ground calcium carbonate) 350 kg / ton paper, inner starch 15 kg / ton paper, other functional additives are positive polyacrylamine, Silica sol and negative polyacrylamide are added according to demand, specifically 0.2 kg / ton paper, 4 kg / ton paper and 0.25 kg / ton paper.

[0073] 2) Sizing on the paper surface that is not completely dry;

[0074] The surface sizing composition is as follows: starch is the original sta...

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Abstract

The invention relates to a surface sizing composition and application thereof to offset paper. The surface sizing composition comprises starch, a pigment and a crosslinking agent, wherein the crosslinking agent is selected from PAPU (polyamide polyurea type) compound, inorganic AZC (ammonia zirconium carbonate) compound or inorganic PZC (potassium zirtonium carbonate) compound. The offset paper made by using the surface sizing composition provided by the invention has high surface smoothness and strength, good hand feel and natural and gentle color, is free from overprinting in the printing process and is suitable for the color printing of a variety of graphics and texts.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a surface sizing composition in the field of papermaking and its application in offset paper. Background technique [0002] Offset paper is also called offset paper, which is a kind of ordinary paper we use every day, such as copy paper, homework paper, etc., usually 60g / 80g / 100g and so on. At present, offset paper is mostly white, and fluorescent whitening agents are added in the copying process, which is not environmentally friendly and the color is not soft enough. Reading books printed on white offset paper for a long time will have a certain impact on readers' vision. Starch is mostly used as the surface sizing agent for white offset paper, and the graphic printing is not gorgeous enough, and the multi-color printing is more obvious. The smoothness of white double-adhesive paper is generally controlled at 20-40sec / 10cc, the surface is relatively rough, and the hand feeling is not...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/16D21H17/68D21H23/24D21H19/38D21H19/40D21H19/54D21H19/62D21H19/64D21H11/00
Inventor 陈汉彬徐智龙李娟管新张家李
Owner HAINAN JINHAI PULP & PAPER
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