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Light offset paper filled with synthetic calcium silicate and manufacturing method thereof

A technology of calcium silicate and light paper, applied in the field of papermaking, can solve the problem of high preparation cost, achieve the effects of low bulk density, reduced environmental pollution, and good sedimentation volume

Inactive Publication Date: 2013-02-06
DATANG INT POWER GENERATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used inorganic filler is mainly light calcium carbonate. Although light calcium carbonate has a light and loose structure, the preparation cost is relatively high, which to a certain extent restricts the improvement of the bulk index of the filled paper.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The chemical softwood pulp is beaten to 40°SR, and the poplar PRC-APMP pulp is beaten to 37°SR. The two are mixed according to a mass ratio of 20%:80% of the absolute dry pulp mass to prepare a 800kg mixed pulp. Weigh 200kg of synthetic calcium silicate (calculated as the absolute dry amount of solids), add it to the ashing tank with a water temperature of 50℃, stir evenly to make the solid content 14%, filter and remove slag, and then introduce it to the post-knock slurry storage tank , And the above-mentioned 800 kg of mixed fiber slurry is fully stirred. Then add other additives (all based on the absolute dry pulp quality): ATC 0.04%, AKD 0.4%, cationic starch 1.3%, retention aid CPAM 0.03%. After the slurry is evenly stirred, it is made by Fourdrinier wire to control the on-line concentration of 0.53% to obtain a light paper sheet.

[0027] Surface sizing is performed on the obtained light-weight paper. The surface sizing agent is a mixed sizing material made of polyv...

Embodiment 2

[0031] The chemical softwood pulp is beaten to 45°SR, and the poplar PRC-APMP pulp is beaten to 34°SR. The two are mixed according to the dry pulp mass ratio of 17%:83% to prepare 750kg mixed pulp. Weigh 250kg of synthetic calcium silicate (calculated as the absolute dry amount of solids), add it to the ashing tank at a water temperature of 60℃, stir evenly to make the solid content 16%, filter and remove slag, and then introduce it into the slurry storage tank after knocking , Fully stir with the 750kg mixed fiber slurry. Then add other additives to the slurry tank (all based on the quality of the absolute dry pulp): ATC 0.06%, AKD 0.5%, cationic starch 1.5%, retention aid CPAM 0.05%; after the slurry is evenly stirred, pass through the Fourdrinier Papermaking, control the net concentration of papermaking to 0.53%, and obtain light paper sheets.

[0032] Surface sizing is performed on the obtained light-weight paper. The surface sizing agent is a mixed sizing material made of p...

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Abstract

The invention relates to light offset paper filled with synthetic calcium silicate and a manufacturing method thereof. The manufacturing method of the light offset paper includes the process of taking chemical softwood pulp and poplar PRC-APMP pulp as paper pulp raw materials, taking synthetic calcium silicate as filling material and then manufacturing the light offset paper with pulp. The produced light offset paper provided by the invention has high bulk, high opacity, no luster on the surface, excellent finishing and simple manufacturing technique, and filling material can be effectively added; and meanwhile, the calcium silicate filling material used in the invention comes from waste material of power plants, so that the manufacturing cost is reduced, and an output way with high added value is provided for the plenty of discharged fly ash in power plants.

Description

Technical field [0001] The invention relates to a synthetic calcium silicate filled light paper and a manufacturing method thereof, belonging to the field of papermaking. Background technique [0002] Lightweight paper is a kind of special printing paper that requires high bulk, light scattering coefficient and opacity. It has been widely used in the printing of books, classics, picture albums, celebrity biographies and student textbooks. It is also called "Mengken paper" . Lightweight paper has good texture and bulk, high opacity, good printing adaptability and good original reproduction after printing. It can be said that it is a paper product that adapts to the development of papermaking and printing industries that require paper with low basis weight, light weight and low cost. [0003] In order to meet the requirements of bulk, opacity and paper texture, most of the manufacturing of light printing paper uses bleached chemical thermomechanical pulp (BCTMP) as the fiber raw mat...

Claims

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Application Information

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IPC IPC(8): D21H11/02D21H17/67D21H21/14D21H17/17D21H17/29D21H21/10D21H21/16
Inventor 张毅陈刚孙俊民闫绍勇张战军魏晓芬王成海宋宝祥杨静王利娟
Owner DATANG INT POWER GENERATION
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