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Lightly coated craft paper and production method thereof

A production method, kraft cardboard technology, applied in the field of papermaking, can solve the problems that uniformity and openness affect the ink absorption effect, coating coverage and uniformity have a great impact, and affect the printing quality of coated paper, etc., to reduce bleaching Chemical dosage, increase market competitiveness, bright color effect

Active Publication Date: 2020-04-14
DONGGUAN NINE DRAGONS PAPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous improvement of printing machine speed and the popularization of multi-color printing, higher requirements are put forward for the printing performance of light-coated cattle card, because the coating amount of light-coated cattle card is 16-30g / m 2 , the amount of coating is smaller than that of ordinary coated paper, the coverage and uniformity of the coating are greatly affected by the base paper, the uniformity and openness of the coating seriously affect the ink absorption effect, thus affecting the printing quality of coated paper, It is easy to produce dew and printing problems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Lightly coated craft paper and production method thereof
  • Lightly coated craft paper and production method thereof
  • Lightly coated craft paper and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, a light-coated kraft cardboard comprises a surface layer 1, a core layer 2 and a bottom layer 3, the core layer 2 is located between the surface layer 1 and the bottom layer 3, the upper side of the surface layer 1 is a positive surface sizing layer 4, and the bottom layer The lower side of 3 is the back surface sizing layer 5, the upper side of the front surface sizing layer 4 is the precoat coating layer 6, and the upper side of the precoat coating layer 6 is the top coating layer 7.

[0037] The production method of the above-mentioned light-coated kraft cardboard includes: preparing base paper, surface glue, coating and drying, wherein,

[0038] 1. Preparation of base paper: pulping, screening, purification, deinking, bleaching and beating of the pulp of the surface layer, core layer and bottom layer, and then sizing through the paper machine flow delivery system, dehydration and compounding at the wire part to obtain a dryness of 23% bas...

Embodiment 2

[0060] Such as figure 1 As shown, a light-coated kraft cardboard comprises a surface layer 1, a core layer 2 and a bottom layer 3, the core layer 2 is located between the surface layer 1 and the bottom layer 3, the upper side of the surface layer 1 is a positive surface sizing layer 4, and the bottom layer The lower side of 3 is the back surface sizing layer 5, the upper side of the front surface sizing layer 4 is the precoat coating layer 6, and the upper side of the precoat coating layer 6 is the top coating layer 7.

[0061] The production method of the above-mentioned light-coated kraft cardboard includes: preparing base paper, surface glue, coating and drying, wherein,

[0062] 1. Preparation of base paper: pulping, screening, purification, deinking, bleaching and beating of the pulp of the surface layer, core layer and bottom layer, and then sizing through the paper machine flow delivery system, dehydration and compounding at the wire part to obtain a dryness of 20% bas...

Embodiment 3

[0083] Such as figure 1 As shown, a light-coated kraft cardboard comprises a surface layer 1, a core layer 2 and a bottom layer 3, the core layer 2 is located between the surface layer 1 and the bottom layer 3, the upper side of the surface layer 1 is a positive surface sizing layer 4, and the bottom layer The lower side of 3 is the back surface sizing layer 5, the upper side of the front surface sizing layer 4 is the precoat coating layer 6, and the upper side of the precoat coating layer 6 is the top coating layer 7.

[0084] The production method of the above-mentioned light-coated kraft cardboard includes: preparing base paper, surface glue, coating and drying, wherein,

[0085] 1. Preparation of base paper: pulping, screening, purification, deinking, bleaching and beating of the pulp of the surface layer, core layer and bottom layer, and then sizing through the paper machine flow delivery system, dehydration and compounding at the wire part to obtain a dryness of 25% bas...

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Abstract

The invention relates to the technical field of papermaking, in particular to a lightly coated craft paper and a production method thereof. The lightly coated craft paper comprises a surface layer, acore layer, a bottom layer, a front surface sizing layer and a back surface sizing layer, the front surface sizing layer and the back surface sizing layer are located on the surface of the surface layer and the surface of the bottom layer respectively, a pre-coating layer is arranged on the front surface sizing layer, and a surface coating layer is arranged on the pre-coating layer. The productionmethod of the lightly coated craft paper comprises the following steps: raw paper preparing, surface sizing, coating and drying. In the coating process, novel latex namely styrene acrylate latex or polyethylene ethyl ester latex is added into a surface coating paint; the ester group reaction can improve the opening degree of the coating, the ink absorbing performance of paper is improved; in addition, the covering property of the coating can be improved, the smoothness and compressibility of finished paper are improved, the problems of white exposure and printing floating are reduced, printedpaper products are not prone to yellowing, the color is brighter and more exquisite, meanwhile, the whiteness of the finished paper can be improved, the use amount of bleaching chemicals is reduced,and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a light-coated kraftboard and a production method thereof. Background technique [0002] Light-weight coated kraft linerboard has good mechanical strength and good coating performance. It is more and more widely used in the market, and its consumption is increasing year by year. With the continuous improvement of printing machine speed and the popularization of multi-color printing, higher requirements are put forward for the printing performance of light-coated cattle card, because the coating amount of light-coated cattle card is 16-30g / m 2 , the amount of coating is smaller than that of ordinary coated paper, the coverage and uniformity of the coating are greatly affected by the base paper, the uniformity and openness of the coating seriously affect the ink absorption effect, thus affecting the printing quality of coated paper, It is easy to produce problems of dew white ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/14D21H17/46D21H17/67D21H17/68D21H19/82D21H19/84D21H21/08D21H21/12D21H21/14D21H21/16D21H21/36D21H27/30B32B29/00
CPCB32B29/00D21H11/14D21H17/46D21H17/675D21H17/68D21H19/82D21H19/84D21H21/08D21H21/12D21H21/14D21H21/16D21H21/36D21H27/30
Inventor 刘名中张益安陈俊刘永宋林林
Owner DONGGUAN NINE DRAGONS PAPER IND
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