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Method for improving optical performance of paper through composite structure of stuffing and fiber

A technology with composite structure and optical properties, applied in pulp beating/refining method, textile and papermaking, fiber raw material processing, etc. Transparency, optical performance improvement effect

Inactive Publication Date: 2014-07-23
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding chemicals on the one hand involves the problem of stable control of the wet end of the paper machine, on the other hand it will increase costs, resulting in increased production costs

Method used

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  • Method for improving optical performance of paper through composite structure of stuffing and fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0023] A method for improving the optical properties of paper using a composite structure of fillers and fibers, comprising the following steps:

[0024] 1) Disintegration of pulp: fully disintegrate softwood pulp, dehydrate, and make a slurry with a final concentration of 20%;

[0025] 2) Configuration of filler suspension: configure calcium carbonate filler suspension with a concentration of 15%, and fully stir and disperse;

[0026] 3) Configuration of mixed slurry: mix 15% calcium carbonate filler suspension with slurry with a final concentration of 20% according to the dry mass ratio of 1:6, and add water to dilute to the total solid content concentration Be 12%, obtain mixed slurry;

[0027] 4) Refining: refining the prepared mixed stock, the refining concentration is 12%, and the beating degree of the final mixed stock is 30°SR;

[0028] 5) Papermaking of paper sheets: firstly dilute the mixed pulp after refining treatment to a concentration of 0.2%, and then add rete...

Embodiment 2

[0030] A method for improving the optical properties of paper using a composite structure of fillers and fibers, comprising the following steps:

[0031] 1) Disintegration of pulp: fully disintegrate and dehydrate chemical softwood pulp and hardwood pulp to make a slurry with a final concentration of 24%;

[0032] 2) Configuration of filler suspension: prepare kaolin filler suspension with a concentration of 17%, and fully stir and disperse;

[0033] 3) Configuration of mixed slurry: According to the ratio of dry mass ratio of 2:6, mix 17% kaolin filler suspension with slurry with a final concentration of 24%, and add water to dilute to a total solid content concentration of 11%, obtain mixed slurry;

[0034] 4) Refining: refining the prepared mixed pulp, the refining concentration is 11%, and the beating degree of the final mixed pulp is 35°SR;

[0035] 5) Papermaking of paper sheets: firstly dilute the mixed pulp after refining treatment to a concentration of 0.3%, and the...

Embodiment 3

[0037] A method for improving the optical properties of paper using a composite structure of fillers and fibers, comprising the following steps:

[0038] 1) Disintegration of pulp: fully disintegrate softwood pulp and chemical mechanical pulp, dehydrate, and make a slurry with a final concentration of 26%;

[0039] 2) Configuration of filler suspension: prepare a suspension of talcum powder and calcium carbonate filler with a concentration of 20%, and fully stir and disperse;

[0040] 3) Configuration of mixed slurry: According to the ratio of dry mass ratio of 3:6, the suspension of 20% talcum powder and calcium carbonate filler is mixed with the slurry with a final concentration of 26%, and diluted with water to The total solid content concentration is 9%, and the mixed slurry is obtained;

[0041] 4) Refining: refining the prepared mixed stock, the refining concentration is 12%, and the beating degree of the final mixed stock is 42°SR;

[0042] 5) Papermaking of paper she...

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Abstract

The invention discloses a method for improving the optical performance of paper through a composite structure of stuffing and fiber and belongs to the technical field of paper making. The method comprises the steps that (1) pulp is disintegrated and dehydrated, and therefore size is manufactured; (2) the stuffing is manufactured into stuffing suspension liquid, and the stuffing suspension liquid is fully stirred and dispersed; (3) the stuffing suspension liquid is mixed with the size, water is added for dilution until the system total solid content concentration ranges from 9% to 12%, and then a mixed size is obtained; (4) size grinding is conducted on the mixed size until the final beating degree of the mixed size ranges from 30 oSR to 50 oSR; (5) firstly, the mixed size obtained after size grinding is diluted until the concentration ranges from 0.1% to 0.3%, secondly, a retention aid is added, and finally, formed wet paper is squeezed and dried. According to the paper, manufactured according to the method, with stuffing, on the premise that the strength performance of the paper is not changed, the whiteness and the light scattering coefficient of the paper can be effectively increased, and the effect of improving the optical performance is achieved.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to a method for improving the optical performance of paper by using a composite structure of filler and fiber. Background technique [0002] In order to improve the optical properties and printability of paper, meet some special performance requirements of paper, save fiber raw materials and reduce production costs, fillers are generally required to be added in the production of paper. The filling amount of different paper types varies greatly, ranging from 2% to 3% and up to 40%. Since the price of general fillers is only one-tenth of the price of plant fibers or even lower, adding more fillers to paper can significantly reduce paper production costs. There are many types of paper-making fillers, the most commonly used ones are heavy calcium carbonate, light calcium carbonate, talcum powder, kaolin and so on. For paper with high requirements for whiteness and opac...

Claims

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Application Information

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IPC IPC(8): D21B1/34D21D1/20D21H17/67D21H17/68D21H21/10
Inventor 宋顺喜张美云王建郝宁吴养育李琳孙俊民
Owner SHAANXI UNIV OF SCI & TECH
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