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High-bulk light paper and production method thereof

A production method and light paper technology, applied in the field of papermaking, can solve the problems of not taking into account both bulk and smoothness at the same time, and achieve the effects of improving printing adaptability, high smoothness, and increasing light paper bulk

Active Publication Date: 2019-04-02
济南欣易特种纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the domestic light paper production process usually improves the quality of light paper by using chemical mechanical pulp, reducing the beating degree of pulp, reducing the pressure of the press section of the paper machine, and choosing light calcium carbonate as filler, etc., but the bulk and smoothness cannot be taken into account at the same time. Spend

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment one: a kind of quantification is 50g / m 2 Production method of high bulk light weight paper

[0036] A: slurry preparation

[0037] A1: Mix and beat 80% softwood chemical mechanical pulp and 20% softwood bleached chemical pulp, the beating concentration is 3.5%, the beating degree is 50°SR, and the wet weight is 5.5g.

[0038] A2: the modified light calcium sulfate is 30%; the neutral sizing agent AKD is 1.2%; the reinforcing agent PAE is 3.0% (the above percentages are all mass percentages of the absolute dry slurry), and are dispersed in the dispersion tank respectively Afterwards, add in the slurry of step A1 successively. The order of addition is slurry→wet strength agent→modified light calcium sulfate→neutral sizing agent.

[0039] B: paper copying

[0040] The slurry prepared in step A is sent to the paper machine for paper making, and the retention aid PAM: 0.5kg / T paper is added before going online.

[0041] C: surface sizing

[0042] After the f...

Embodiment 2

[0060] Embodiment two a kind of quantification is 55g / m 2 Production method of high bulk light weight paper

[0061] A: slurry preparation

[0062] A1: 85% softwood chemical mechanical pulp and 15% softwood bleached chemical pulp were mixed and beaten, the beating concentration was 3.6%, the beating degree was 53°SR, and the wet weight was 6.0g.

[0063] A2: the modified light calcium sulfate is 35%; the neutral sizing agent AKD is 1.3%; the reinforcing agent PAE is 3.2% (the above percentages are all mass percentages of the absolute dry slurry), and are dispersed in the dispersion tank respectively Afterwards, add in the slurry of step A1 successively. The order of addition is slurry→wet strength agent→modified light calcium sulfate→neutral sizing agent.

[0064] B: paper copying

[0065] The slurry prepared in step A is sent to the paper machine for papermaking, and the retention aid PAM: 0.55kg / T paper is added before going online.

[0066] C: surface sizing

[0067] ...

Embodiment 3

[0085] Embodiment three a kind of quantification is the production method of 60g / m high bulky light weight paper

[0086] A: slurry preparation

[0087] A1: Mix and beat 90% softwood chemical mechanical pulp and 10% softwood bleached chemical pulp, the beating concentration is 3.8%, the beating degree is 55°SR, and the wet weight is 6.5g.

[0088] A2: the modified light calcium sulfate is 40%; the neutral sizing agent AKD is 1.5%; the reinforcing agent PAE is 3.5% (the above percentages are all mass percentages of the absolute dry slurry), and are dispersed in the dispersion tank respectively Afterwards, add in the slurry of step A1 successively. The order of addition is slurry→wet strength agent→modified light calcium sulfate→neutral sizing agent.

[0089] B: paper copying

[0090] The slurry prepared in step A is sent to the paper machine for papermaking, and the retention aid PAM: 0.6kg / T paper is added before going online.

[0091] C: surface sizing

[0092] After the...

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Abstract

The invention discloses high-bulk light paper and a production method thereof. According to the method, modified calcium sulfate is added into pulp to improve bulk of the light paper, and smoothness of the light paper is improved by using a surface micro coating process and adopting a surface coating liquid added with modified calcium sulfate. The bulk of the light paper produced by using the method disclosed by the invention is up to 2.0 cm<3> / g, and the smoothness is up to 12s or above, so that contradiction between bulk and smoothness of a paper sheet is effectively solved. Other indexes can meet printing application requirements, the mass of a book can be effectively reduced, the paper is smooth, printing is clear, and color of the paper is natural.

Description

technical field [0001] The invention relates to a high-bulk lightweight paper and a production method thereof, and relates to the technical field of papermaking. Background technique [0002] Lightweight paper, also known as Monken paper, is a rookie among paper products. It was introduced into my country around 1995 and gradually became popular. Lightweight paper is bulky, with high opacity and good printing adaptability; the graphics and texts printed on lightweight paper have a strong sense of three-dimensionality and layering, and high reading comfort; more importantly, lightweight paper is light in specific gravity due to its high bulkiness , with good texture, the weight of books printed on it can be reduced by one-fourth to one-third compared with those printed on ordinary paper, which can effectively save wood fiber raw materials, reduce production costs, and help protect the ecological environment. It can effectively reduce the weight of books and is easy to read a...

Claims

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Application Information

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IPC IPC(8): D21H27/00D21H21/18D21H21/16D21F11/00
CPCD21F11/00D21H21/16D21H21/18D21H27/00
Inventor 魏琳栾耀祖孙翠霞丁雪帆
Owner 济南欣易特种纸业有限公司
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