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A copper plate card and coating technology, which is applied in the direction of paper coating, coating, pigmented coating, etc., can solve the problems of steam and energy consumption, low coating solid content, and low coating amount, so as to save the use of slurry , Increase the solid content of the coating, and the effect of good printing effect
Active Publication Date: 2012-01-18
HAINAN JINHAI PULP & PAPER
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Existing paint formulations for copperplate cards have low solid content of the paint, which requires more steam and energy consumption during the drying process; in addition, the coating amount of the paint is relatively low, and a large amount of fiber is consumed, increasing the demand for wood
Method used
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Embodiment
[0022] Coating formulations for copperplate cards are shown in Table 1-Table 4.
[0023] Table 1 Coating formula of copper plate card
[0024] Raw materials (parts by weight)
Embodiment one
Embodiment two
Embodiment three
Embodiment Four
Embodiment five
calcium carbonate
100
100
100
100
100
Sodium polyacrylate
0.2
0.3
0.5
0.2
0.3
Sodium carboxymethyl cellulose
0.2
0.15
0.1
0.1
0.15
caustic soda
0.5
0.5
0.6
0.6
0.5
potato starch
6
2
0
4
8
Styrene-butadiene latex
6
12
9
10
15
PAPU
0.2
0.5
0.5
0.5
0.5
Styrene-acrylic copolymer
0.2
0.2
0.2
0.2
0.2
sodium stearate
1
0.5
0.2
0.2
0.2
[0025] Table 2 Coating formula of c...
experiment example 1
[0034] ①Paint preparation and coating:
[0035] According to the paint formula in Example 1, each raw material was added in turn, and the paint was uniformly dispersed at a high speed, with a solid content of 68%; the coating speed was 600 m / min, and it was produced under the scraper coating method.
[0036] ② Coating sequence and paper weight:
[0037] Apply the base coat first, and then the top coat;
[0038] The paper gram weight is 200 grams.
[0039] ③Printing and paper properties:
[0040] The physical properties of the finished paper are excellent, and the printing color is gorgeous.
experiment example 2
[0042] ①Paint preparation and coating:
[0043] According to the coating formula of Example 2, each raw material was added in sequence, and the coating was uniformly dispersed at a high speed, and the solid content was 70%; the coating speed was 620 m / min, and it was produced under the scraper coating method.
[0044] ② Coating sequence and paper weight:
[0045] Apply the base coat first, and then the top coat;
[0046] The paper gram weight is 250 grams.
[0047] ③Printing and paper properties:
[0048] The physical properties of the finished paper are excellent, and the printing color is gorgeous.
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Abstract
The present invention provides a new copperplate board coating. The copperplate board coating comprises the following raw materials, by weight, 5-100 parts of a pigment, 0-20 parts of starch, 0.2-5 parts of caustic soda, 0.05-3 parts of a rheology and water retaining agent, 1-30 parts of latex, 0.1-10 parts of a hydration resistant agent, 0.1-10 parts of a water repellent agent, 0.1-10 parts of alubricant and 0.1 to 8 parts of a dispersing agent. With the formula of the high solid content coating provided by the present invention, the gram weight of the base paper can be reduced in the context of production of the copper board with the same specification, such that the ratio of the base paper in the copper board is reduced, the slurry cost is decreased, the requirement of wood is reduced, the economic benefits and the social benefits are significantly improved; due to the reduction of the gram weight of the base paper, the speed can be improved during the base paper papermaking, the machine efficiency and the productivity can be improved; with the improvement of the coating amount, the paper covering and the smoothness are improved, such that the final product has a better printing effect.
Description
technical field [0001] The invention relates to the technical field of papermaking, in particular to a copper plate card coating. Background technique [0002] Copperplate cards are mainly used in brochures, book covers, children's books and other technical fields that require high printing color quality. Soft and elegant, excellent printing characteristics such as color reproduction. [0003] The quality of copperplate cards depends largely on the physical properties of the paint. Existing paint formulations for copperplate cards have low solid content of the paint, which requires more steam and energy consumption during the drying process; in addition, the coating amount of the paint is relatively low, and a large amount of fiber is consumed, increasing the demand for wood. Therefore, the optimization of the coating formula will help to improve the overall quality of the copper card. Contents of the invention [0004] The purpose of the invention is to overcome the d...
Claims
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Application Information
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