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Transfer membrane mirror copper coating and coated paper using same

A mirror copper and film transfer technology, applied in paper coating, papermaking, coating, etc., can solve problems such as poor ink fixation and slow ink drying time

Inactive Publication Date: 2013-09-18
GOLD EAST PAPER JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently the high-gloss mirror copper coatings on the market are generally water-based styrene-acrylic resin coatings or pure acrylic emulsion coatings, which mainly have the problems of slow ink drying time during offset printing and poor ink fixation during UV flexographic printing, making it difficult to adapt to letterpress and gravure printing. , offset, flexo and other printing methods

Method used

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  • Transfer membrane mirror copper coating and coated paper using same

Examples

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preparation example Construction

[0020] The preparation method of the film transfer mirror copper coating of the present invention can be prepared by mixing and stirring 100 parts by mass of calcium carbonate or silicon dioxide, 25-40 parts by mass of latex, 1.5-6.5 parts by mass of release agent and an appropriate amount of water. 0.02-0.06 parts by mass of defoamer, 0.5-1.5 parts by mass of thickener, and 0.02-0.06 parts by mass of dispersant can be optionally added.

[0021] The present invention provides a preferred example of the preparation method of the film transfer mirror copper coating, which specifically includes the following steps:

[0022] (1) Put water and pigment into the same container according to the required ratio, use a mixer to stir evenly, and prepare pigment slurry water. In this step, dispersant and defoamer can also be optionally added;

[0023] (2) Add latex into the prepared pigment slurry water, stir the solution during the adding process, and then optionally add thickener to adju...

Embodiment 1

[0031] Configure according to the composition and content of the film transfer mirror copper coating, as follows:

[0032] Calcium carbonate: 100 parts by mass;

[0033] Latex: 32 parts by mass;

[0034] Release agent: 1.5 parts by mass;

[0035] Defoamer: 0.04 parts by mass;

[0036] Thickener: 0.8 parts by mass.

[0037] The latex emulsion is polystyrene and acrylic emulsion. The solid content is 49.5%, and the glass transition temperature is 18°C.

[0038] The calcium carbonate particles have an average particle size of 0.42 microns and an oil absorption of 55 cm 3 / 100g. The release agent is a modified silicone polymer. The thickener is selected from carboxymethylcellulose CMC. The paint also included 0.04 part of dispersant. The defoamer is a silicone defoamer with good foam suppression performance.

[0039] The preparation method of the film transfer mirror surface copper paint is as follows:

[0040] (1) Thickener pre-dispersion, put 0.8 parts by mass of thic...

Embodiment 2

[0046] Referring to the method and steps of Example 1, the configuration of the film-transferred mirror copper coating is carried out. Please refer to Table 1 for specific ratios of different raw materials.

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Abstract

The invention discloses a transfer membrane mirror copper coating, comprising the components in parts by weight: 100 parts of pigment, 25-40 parts of latex, and 1.5-6.5 parts of a release agent, wherein the pigment is calcium carbonate or silica; the mean particle size of the calcium carbonate is 0.2-0.7 microns; the glass transition temperature of the latex is 8-35 DEG C. The invention also provides a coated paper prepared by using the transfer membrane mirror copper coating. The transfer membrane mirror copper coating disclosed by the invention can be suitable for various printing modes of a relief block, a soft block, a gravure, an offset plate, UV (ultraviolet) ink printing and the like, and is bright in printing color, fast to dry the ink, firm to stick the ink, and good in effect. The surface gloss of the coated paper coated by the transfer membrane mirror copper coating is greater than 90%; the surface smoothness is greater than 1000 seconds.

Description

technical field [0001] The invention relates to a film-transferred mirror-surface copper paint and coated paper using the same. Background technique [0002] In the packaging and printing industry, paper product packaging is favored by more and more consumers due to its low pollution and recyclability. As a packaging material, coated paper is widely used in the outer packaging of cosmetics, tobacco, wine and other products. The high gloss and smoothness of packaging materials have always been important reference indicators for its quality. At present, the coated paper processed by cast coating process on the market has a surface gloss of only about 88 degrees and a low surface smoothness, generally not exceeding 400 seconds. Therefore, the market has begun to study the process of producing mirror copper by film transfer. The film transfer mirror copper coating is to apply the paint on the transfer film, and press it on the top surface of the base paper when the coating laye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/38D21H19/40D21H19/58D21H21/06
Inventor 张菊仙王仁荣张明孙善伟陶卫峰
Owner GOLD EAST PAPER JIANGSU
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