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

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Problems solved by technology

However, adding chemicals on the one hand involves the problem of stable control of the wet end of

Method used

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

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Example Embodiment

[0022] Example 1

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

[0024] 1) Disintegration of pulp: The softwood pulp is fully disintegrated and dehydrated to prepare a pulp with a final concentration of 20%;

[0025] 2) The configuration of filler suspension: a calcium carbonate filler suspension with a concentration of 15% is prepared, and it is fully stirred and dispersed;

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

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

[0028] 5) Papermaking: First, dilute the refining mixed slurr...

Example Embodiment

[0029] Example 2

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

[0031] 1) Pulp disintegration: the chemical softwood pulp and hardwood pulp are fully disintegrated, dehydrated, and made into a slurry with a final concentration of 24%;

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

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

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

[0035] 5) Papermaking: First, dilute the mixed slurry after refining...

Example Embodiment

[0036] Example 3

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

[0038] 1) Pulp disintegration: the softwood pulp and chemical mechanical pulp are fully disintegrated and dehydrated to prepare a slurry with a final concentration of 26%;

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

[0040] 3) The configuration of the mixed slurry: According to the ratio of the absolute dry mass ratio of 3:6, mix the suspension of 20% talc and calcium carbonate filler with the final concentration of 26% slurry, and add clear water to dilute to The total solid content concentration is 9% to obtain a mixed slurry;

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

[0042] 5) Papermaking: First, ...

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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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