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Coating kraft liner board paper

A kraft cardboard, coating technology, applied in papermaking, coating, paper coating and other directions, can solve the problems of reducing coating amount, increasing production cost, etc., achieving good printing adaptability, low cost, uniform and sufficient coating coverage Effect

Active Publication Date: 2010-08-25
CHINA NAT PULP & PAPER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using the latter method to prepare coated kraft cardboard, when using the usual pigment coating, it needs at least 50g / m 2 coating amount, using high opacity pigments such as TiO 2 , can significantly reduce the amount of coating, but at the same time will significantly increase the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. With the help of the coating device, apply the primer coating at a quantitative rate of 175g / m 2 On the natural color kraft cardboard, the coating includes 70 parts of calcium carbonate, 20 parts of kaolin, 10 parts of composite titanium dioxide, 10-20 parts of styrene-butadiene latex, and the coating amount is 8-10g / m 2 .

[0016] 2. With the help of a coating device, apply the middle coat paint on the primed kraft cardboard, wherein the paint includes 25 parts of kaolin, 40 parts of calcined kaolin, 5 parts of TiO 2 , 30 parts of composite titanium dioxide, 10-20 parts of styrene-butadiene latex, coating amount 16-18g / m 2 .

[0017] 3. With the help of a coating device, apply the top coat paint on the kraft cardboard that has been primed and intermediate coated, wherein the paint includes 30 parts of calcium carbonate, 40 parts of kaolin, 10 parts of calcined kaolin, 20 parts of composite titanium dioxide, 10-20 parts of styrene-butadiene latex, the coating amou...

Embodiment 2

[0020] 1. With the help of the coating device, apply the primer coating at a quantitative rate of 175g / m 2 On the natural color kraft cardboard, the coating includes 60 parts of calcium carbonate, 20 parts of kaolin, 20 parts of composite titanium dioxide, 10-20 parts of styrene-butadiene latex, and the coating amount is 8-10g / m 2 .

[0021] 2. With the help of a coating device, apply the middle coat paint on the primed kraft cardboard, wherein the paint includes 50 parts of kaolin, 20 parts of calcined kaolin, 10 parts of TiO 2 , 20 parts of composite titanium dioxide, 10-20 parts of styrene-butadiene latex, coating amount 16-18g / m2.

[0022] 3. With the help of a coating device, apply the top coat paint on the kraft cardboard that has been primed and intermediate coated, wherein the paint includes 15 parts of calcium carbonate, 50 parts of kaolin, 30 parts of calcined kaolin, 5 parts of composite titanium dioxide, 10-20 parts of styrene-butadiene latex, the coating amount ...

Embodiment 3

[0025] 1. With the help of the coating device, apply the primer coating at a quantitative rate of 175g / m 2 On the natural color kraft cardboard, the coating includes 45 parts of calcium carbonate, 50 parts of kaolin, 5 parts of composite titanium dioxide, 10-20 parts of styrene-butadiene latex, and the coating amount is 8-10g / m 2 .

[0026] 2. With the help of a coating device, apply the middle coat paint on the primed kraft cardboard, wherein the paint includes 55 parts of kaolin, 20 parts of calcined kaolin, 15 parts of TiO 2 , 10 parts of composite titanium dioxide, 10-20 parts of styrene-butadiene latex, coating amount 16-18g / m 2 .

[0027] 3. With the help of a coating device, apply the top coat paint on the kraft cardboard that has been primed and intermediate coated, wherein the paint includes 15 parts of calcium carbonate, 50 parts of kaolin, 20 parts of calcined kaolin, 15 parts of composite titanium dioxide, 10-20 parts of styrene-butadiene latex, the coating amou...

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PUM

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Abstract

The invention discloses a coating kraft paperboard which utilizes unbleached kraft paperboard as a coating base paper, wherein, a pigment coating containing an adhesive is formed on the unbleached kraft paperboard while the pigment coating comprises a base coating pigment coating, a floating coating pigment coating and a top coating pigment coating. Each pigment coating contains complex titanium pigment as a pigment component. The invention has the advantages of comparatively low relative cost, low coating consumption, even and full coating covering, no striation, no crack, no delamination and good adaptability for printing, thereby being capable of meeting the requirements of box making and printing.

Description

technical field [0001] The invention relates to a coated kraft cardboard. Background technique [0002] At present, the coated kraft cardboard is mainly realized in two ways. One is to hang a layer of 30-40g / m2 on the surface of the natural color kraft cardboard first. 2 The white pulp, and then paint coating to achieve, the other is not to hang the white pulp, directly through pigment coating to achieve. When using the latter method to prepare coated kraft cardboard, when using the usual pigment coating, it needs at least 50g / m 2 coating amount, using high opacity pigments such as TiO 2 When the coating amount can be significantly reduced, but at the same time, the production cost will be significantly increased. Contents of the invention [0003] The object of the present invention is to provide a kind of coated kraft cardboard which uses special mineral pigments to coat the natural color kraft cardboard. [0004] The purpose of the present invention is achieved like...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H19/36D21H19/38D21H19/44
Inventor 刘金刚苏艳群王比松曹振雷
Owner CHINA NAT PULP & PAPER RES INST CO LTD
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