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Curtain type coating craft paper and preparation method thereof

A technology of coating kraft cardboard and curtain type, which is applied in the field of papermaking, and can solve problems such as increasing the production cost of kraft cardboard

Active Publication Date: 2013-11-20
JIAN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that in order to achieve good performance (such as low basis weight, high strength, good surface ink absorption, good printing gloss, etc.), the existing kraft cardboard has a relatively high requirements, thereby increasing the production cost of kraft cardboard, and providing a curtain coating kraft cardboard for this problem

Method used

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  • Curtain type coating craft paper and preparation method thereof
  • Curtain type coating craft paper and preparation method thereof
  • Curtain type coating craft paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as figure 1 , a kind of curtain coating kraft cardboard, comprises front sizing layer 4, back sizing layer 8, is positioned at the base paper layer between front sizing layer 4 and back sizing layer 8 and is arranged on front sizing layer 4 coating layer, the coating layer is divided into base coat 3, top coat 1 and curtain coat 2 between base coat 3 and top coat 1, base paper layer is divided into bottom coat 7, core layer 6 and surface Layer 5, wherein the materials of base paper layer are shown in Table 1:

[0056] Table 1

[0057]

[0058] The materials for the sizing layer are shown in Table 2:

[0059] Table 2

[0060]

[0061] The materials of the coating layer are shown in Table 3:

[0062] table 3

[0063]

[0064] Remarks: Grade 65 means that more than 65% of the calcium carbonate has a diameter of less than 2um, and the rest are analogous. The polymerized concentrated fat defoamer is produced by Amazon Chemical Co., Ltd., and the brand name...

Embodiment 2

[0076] Embodiment 2 is identical with embodiment 1, and difference is following base paper layer, coating layer material formula and production parameters:

[0077] The materials of base paper layer in embodiment 2

[0078]

[0079] The materials of coating layer in embodiment 2

[0080]

[0081] Remarks: Grade 65 means that more than 65% of the calcium carbonate has a diameter of less than 2um, and the rest are analogous. The polymerized concentrated fat defoamer is produced by Amazon Chemical Co., Ltd., and the brand name is AmiDefoam5802.

[0082] Production parameters in embodiment 2

[0083] Squeeze line pressure

Embodiment 3

[0085] Such as figure 2 , a kind of curtain coating kraft cardboard, comprises front sizing layer 14, back sizing layer 18, is positioned at the base paper layer between front sizing layer 14 and back sizing layer 18 and is arranged on front sizing layer 14 The coating layer, the coating layer is divided into base coat 13, top coat 11 and the curtain coat 12 between base coat 13 and top coat 11, wherein curtain coat 12 is a double curtain layer (respectively The upper curtain layer 20 and the lower curtain layer 19), the base paper layer is divided into the bottom layer 17, the core layer 16 and the surface layer 15, and the materials used for the base paper layer are shown in Table 5:

[0086] table 5

[0087]

[0088] The materials for the sizing layer are shown in Table 6:

[0089] Table 6

[0090]

[0091] The materials of the coating layer are shown in Table 7:

[0092] Table 7

[0093]

[0094] Remarks: Grade 65 means that more than 65% of the calcium carb...

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Abstract

The invention belongs to the technical field of paper making, and relates to curtain type coating craft paper and a method for preparing the curtain type coating craft paper. In order to solve the problem that the production cost of the existing craft paper is increased for achieving good properties such as low quantification, high strength, good surface ink absorption, good printing glossiness and the like and at least meeting quite high requirements for white craft base paper, according to the invention, a coating layer is mainly improved, thus the technical problem can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and relates to a curtain-coated kraft cardboard. In addition, the invention also provides a method for preparing the curtain-coated kraft cardboard. Background technique [0002] At present, the coated white-faced linerboard on the market is very popular among customers because of its low basis weight, high strength, good surface ink absorption and printing gloss. However, due to the high whiteness of the finished paper (the whiteness is required to be above 80°) and the requirements for covering the paper surface, the existing coated white-faced kraft linerboard can only be coated on the white-faced kraft linerboard. [0003] At the same time, the existing coated white-faced kraft linerboard has quite high requirements on the fineness, impurity content, dustiness and whiteness of the white-faced kraft liner base paper. Mainly reflected in the fact that the existing coated kraftboard require...

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 Patents(China)
IPC IPC(8): D21H27/30D21H19/82D21H19/84D21H19/38D21H19/40D21H19/58D21H19/54D21H19/44D21H21/06D21H21/12D21H21/08B32B29/00
Inventor 舒君明冯军贤文学芬李聪定黄公荣
Owner JIAN GRP