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Kraft board paper and manufacturing method thereof

A technology for kraft boxes and cardboard, applied in the field of papermaking, can solve the problems of high manufacturing cost, low gloss of paper, low retention rate of inorganic fillers, etc. Effect

Active Publication Date: 2019-01-22
SHANYING INT HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] What the present invention intends to solve is the low retention rate of the inorganic filler in the kraft linerboard in the prior art, the low gloss of the paper, and the high manufacturing cost technical problems

Method used

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  • Kraft board paper and manufacturing method thereof
  • Kraft board paper and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In the preparation of liquefied GCC slurry, the powder GCC with a size of 60 grades is selected, the dispersant is triethylhexyl phosphoric acid, and the polyacrylamide derivatives with benzene ring branches in a three-dimensional network structure are polyacrylamide and The reaction product of phenolic resin has a number-average relative molecular weight of 2.5 million, and an anionic polyacrylamide has a number-average relative molecular weight of 9 million.

[0036] The paper machine used to manufacture kraft linerboard is equipped with headbox, wire section, press section, pre-drying section, sizing press section, post-drying section, hard calender, and winder in sequence along the horizontal direction; The wire section is designed as a triple-fold wire; the headbox is a full-flow headbox, and the press section is designed as two shoe presses, or one large roll diameter and one shoe press; the front The drying section adopts a single hanging net arrangement drying c...

Embodiment 2

[0044] The paper machine selected in this embodiment and the preparation method of kraft liner paper are the same as in Example 1, the only difference is that in the preparation of GCC slurry, the GCC mass fraction of 90% GCC water with a size specification of 60 grades is selected. Dispersions. The final product is denoted as S2. GCC aqueous dispersion is used to prepare liquefied GCC slurry, and the amount of each raw material should be calculated according to the actual mass of GCC.

Embodiment 3

[0046] The paper machine and the preparation method of the kraft liner selected in this example are the same as those in Example 1, the only difference is that in the preparation of the GCC slurry, the powder GCC with a size specification of 40 grades is selected. The final product is denoted as S3.

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Abstract

The invention belongs to the technical field of papermaking and particularly relates to a kraft board paper and a manufacturing method thereof. The kraft board paper comprises a surface layer, a corelayer and a bottom layer, and raw materials of the surface layer, the core layer and the bottom layer contain GCC slurry. The GCC slurry comprises water, GCC, a three-dimensional-network structured polyacrylamide derivative with a benzene ring branch chain and anionic polyacrylamide. By coating of GCC with a polyacrylamide polymer, the GCC particle size is increased, compatibility to an organic paper pulp system is improved, and the paper pulp fixation rate of GCC is increased. The invention further discloses a kraft board paper machine and a kraft board paper manufacturing method. The kraft board paper obtained through the paper machine and the manufacturing method is high in mechanical strength and whiteness, and whiteness is not sharply reduced after long-term use. In addition, a papermaking process is green, environmentally friendly, free of pollution and low in production cost.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a kraft liner board and a manufacturing method thereof. Background technique [0002] At present, kraft linerboard on the market is very popular among customers because of its high strength, good color and high printing gloss. These kraft linerboards can be made into packaging boxes for holding various electrical appliances, daily necessities, industrial supplies, etc. Its high-strength performance characteristics can avoid mechanical damage to the contents, and high color and good printing gloss can give packaging boxes better appearance. [0003] Because kraft linerboard has relatively high requirements on the surface brightness index, chemical bleaching liquid is widely used in the industry to bleach the pulp, or bleached wood pulp is used to improve the brightness of the pulp in order to meet the product performance requirements. Among them, the chemical cost of chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F11/04D21H17/10D21H17/37D21H17/42D21H17/67D21H17/69D21H21/06D21H21/16D21H21/54D21H27/10
CPCD21F11/04D21H17/10D21H17/37D21H17/42D21H17/675D21H17/69D21H21/06D21H21/16D21H21/54D21H27/10
Inventor 占正奉陈学萍李聪定宋杰薛正松张扬鲁仕敏
Owner SHANYING INT HLDG CO LTD
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