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High-flexibility water-based varnish with good heat resistance and suitable for UV offset printing

A heat-resistant and flexible technology, applied in the field of high-flexibility water-based varnishes, it can solve problems such as restricting the application of water-based varnishes, scrapped prints, and UV ink bursting, and achieve excellent interlayer adhesion, good adhesion, and low VOC emissions. Effect

Inactive Publication Date: 2020-01-07
广东博海化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Ordinary water-based varnishes are generally made relatively hard due to the heat resistance of the paint film. Therefore, when the printed matter requires folding, embossing, and embossing, it is easy to burst the UV ink, resulting in the scrapping of the printed matter, which restricts the water-based varnish. Applications
[0007] For the existing water-based varnish, after printing UV offset printing ink, the UV ink bursting occurs when the paper is folded, embossed, and embossed. It is necessary to develop a highly flexible water-based varnish suitable for UV offset ink printing.

Method used

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  • High-flexibility water-based varnish with good heat resistance and suitable for UV offset printing
  • High-flexibility water-based varnish with good heat resistance and suitable for UV offset printing
  • High-flexibility water-based varnish with good heat resistance and suitable for UV offset printing

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with specific embodiments:

[0030] The composition of each component of Examples 1 to 5 in weight percentage is shown in Table 1:

[0031] Table 1:

[0032]

[0033] The preparation methods of the highly flexible water-based varnishes of Examples 1 to 5:

[0034] 1) Configure component A: add pure acrylic emulsion, acrylic modified waterborne polyurethane emulsion, and self-crosslinking acrylic dispersant into the dispersion tank according to the formula ratio, and stir at 200 rpm for 15 minutes.

[0035] 2) Configure component B: add deionized water, alcohol solvents, and water-based additives to the mixing tank in proportions, and stir for 15 minutes at 300 rpm.

[0036] 3) Mixing: Pump the well-stirred component B into the dispersion tank, mix with component A, and stir for 15 minutes at 200 rpm.

[0037] 4) Filtering and purifying packaging: The impurities are removed by filtering equipment to obtain a highly...

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Abstract

The invention is a divisional application with an application number of 2017100265557. The invention discloses a high-flexibility water-based varnish with good heat resistance and suitable for UV offset printing. The high-flexibility water-based varnish is composed of the following substances by weight: 10-20% of a pure acrylic emulsion, 5-15% of an acrylic acid modified water-based polyurethane emulsion, 35-55% of a self-crosslinking acrylic acid dispersing agent, 10-25% of water, 10-25% of an alcohol solvent and 0.1-5% of a water-based assistant. The invention provides the high-flexibility water-based varnish with good heat resistance and suitable for UV offset printing.

Description

[0001] This application is a divisional application. The application number of the original application is 2017100265557. The application date is: January 14, 2017. The title of the invention is: A highly flexible water-based varnish suitable for UV offset printing and its preparation method 【Technical Field】 [0002] The invention relates to a high-flexibility water-based varnish with better heat resistance and suitable for UV offset printing, and belongs to the technical field of resin coatings. 【Background technique】 [0003] In the field of packaging cardboard printing for cigarette packaging, wine box packaging, food packaging, pharmaceutical packaging, cosmetics packaging, etc., the cardboard used is usually made of composite cardboard by laminating aluminum foil and aluminized film on the surface of various cardboards; In order to improve the quality and application fields of composite cardboard, improve the printing adaptability of composite cardboard and protect aluminum a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/10D21H17/14D21H17/57D21H17/06D21H21/14
CPCD21H17/06D21H17/14D21H17/57D21H19/10D21H21/14
Inventor 余桂强褚波
Owner 广东博海化工科技有限公司
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