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Coated white-top kraft liner board and manufacturing method thereof

A manufacturing method and technology for kraft cardboard, which are applied in the field of manufacturing coated white-faced kraft cardboard, can solve the problems of hindering papermaking forming wire and felt to filter water, aggravating papermaking pollution, inability and other problems, and achieve the improvement of lint and powder loss. The effect of coating and adhesive migration phenomenon, improving carton output and reducing production cost

Active Publication Date: 2009-11-25
SHANDONG CENTURY SUNSHINE PAPER GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although heavy coated paper has high whiteness, high smoothness, small ink absorption, good printing gloss and excellent printability, but due to the thick coating layer, its strength is very low under the same quantitative conditions. Cannot meet high-strength packaging requirements
At the same time, due to its low strength, the paper sheet is easily broken during the operation of the paper machine, so it is impossible to achieve low quantitative and provide users with low manufacturing cost.
Coatings are non-recyclable raw materials. When re-coated paper is recycled, because of its high coating content, it will hinder the water filtration of the forming wire and felt for papermaking, seriously affecting the normal production and product quality. At the same time, it will increase Difficulty in water treatment, aggravating paper pollution

Method used

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  • Coated white-top kraft liner board and manufacturing method thereof
  • Coated white-top kraft liner board and manufacturing method thereof
  • Coated white-top kraft liner board and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Pulping

[0028] a. Beat the wood pulp to a degree of beating of 30-40°SR to prepare the surface layer pulp.

[0029] b. Beat recycled old books, old newspapers, and office waste paper to a beating degree of 45-55°SR to prepare lining layer slurry.

[0030] c. Beat the OCC long-fiber pulp to a degree of beating of 30-40°SR to prepare the bottom layer pulp.

[0031] 2. Coating preparation

[0032] Coating formula: see Table 1 and Table 2.

[0033] Table 1 Precoat paint formulation

[0034]

[0035] Table 2 top coating formulation

[0036]

[0037]

[0038] In Table 1 and Table 2, the calcium carbonate is preferably heavy calcium carbonate, the average particle diameter of the fine-grained kaolin is 0-2 μm, and the exfoliated kaolin is obtained by peeling fine-grained kaolin with an average particle diameter less than 2 μm , Compared with ordinary fine-grained kaolin, the diameter-thickness ratio of exfoliated kaolin is larger, so the covering effect is b...

Embodiment 2

[0054] Embodiment 2 is basically the same as embodiment 1, and its difference lies in the formula of coating, and the coating formula of embodiment 2 is shown in Table 1 and Table 2.

[0055] Quantitative 150g / m made by the above process 2 The technical indicators of coated white-faced kraft linerboard are shown in Table 3.

Embodiment 3

[0057] Embodiment 3 is basically the same as embodiment 1, and its difference lies in the formula of coating, and the coating formula of embodiment 3 is shown in Table 1 and Table 2.

[0058] Quantitative 175g / m produced by the above process 2 The technical indicators of coated white-faced kraft linerboard are shown in Table 3.

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Abstract

The invention discloses a coated white-top kraft liner board, which comprises a surface layer, a lining and a bottom layer, and also comprises two glue application layers and a coating layer; the two glue application layers are respectively arranged on the surface of the bottom layer and the surface of the surface layer; the coating layer at least comprises a coating separated layer orderly arranged on the surface layer, and the coating separated layer positioned on the surface has a level and smooth surface; and the ration of the coated white-top kraft liner board is between 120 and 220g / m, and the coating weight of the coating layer is between 12 and 28g / m. The invention also discloses a manufacturing method for the coated white-top kraft liner board. The invention adopts a coating method that a film transfer machine performs double-sided glue application on a base paper board and then scraper coating is performed; and the produced coated white-top kraft liner board has good strength index, and good performance of lustrousness, smoothness and printability of the paper surface on the premises of low coating weight and low ration, and can completely meet the requirement of advanced printing and packaging.

Description

technical field [0001] The invention relates to the technical field of coated white-faced kraftboard, and also relates to a method for manufacturing the coated white-faced kraftboard. Background technique [0002] White-faced kraft cardboard has high strength and high whiteness on one side, so it has become a widely used packaging material. It usually includes a surface layer, a lining layer and a bottom layer. Due to the layered structure, the surface layer, lining layer, and bottom layer can use different fiber pulps. For example, the surface layer can use primary wood pulp, and the remaining layers can use Secondary fiber pulp, therefore, the production cost of white-faced kraft linerboard is low, and the pollution load of pulping is small, which is very suitable for the national conditions of my country's lack of natural wood resources. However, the surface smoothness of white kraft cardboard is low, the ink absorption is too large, and the printing gloss is poor, so it ...

Claims

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Application Information

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IPC IPC(8): D21H19/36D21H19/40D21H19/44D21H19/54D21H21/50D21H19/72D21H23/52D21H23/34
Inventor 王东兴张增国慈晓雷张洪明耿书江刘命洲吕兆岗智伟欣王磊
Owner SHANDONG CENTURY SUNSHINE PAPER GROUP
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