Water-based transfer laser coating for vacuum plating medium and preparation method thereof
A laser-transferring, water-based technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of large fluctuations in medium fastness, non-environmental protection, production environment and atmospheric environmental pollution, and achieve good peeling performance and molded brightness Improve and improve the effect of molding brightness
Active Publication Date: 2017-10-03
SHANGHAI WEIKAI CHEM
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0003] At present, there are two problems in the transfer coating used for plating the dielectric film: one is not environmentally friendly, a large amount of esters and ketone solvents such as ethyl acetate, butyl acetate, butanone, etc. are used, which pollute the production environment and the atmospheric environment. It has brought risks to the occupational health of relevant operators. With the introduction of a series of policies such as the coating consumption tax in October 2014, which advocated the development of environmentally friendly coatings, it has been unable to meet the needs of the mainstream market; the second is the medium fastness (that is, vulcanization The adhesion between the zinc coating and the transfer coating) is unstable, especially under the conditions of high temperature and high humidity seasons, the medium fastness fluctuates greatly, which brings great uncertainty to the control of product quality
In 2013, our company disclosed a solvent-based plating medium transfer laser coating (CN102268212B), which is made of polyacrylate resin, nitrogen-containing modified polyacrylate resin, cellulose ester resin, etc., especially using A nitrogen-containing functional polyacrylate resin (copolymerized by monomer acrylonitrile or amine methacrylate and methacrylic resin monomer) to improve the adhesion between the medium and the transfer coating, but due to the large amount of organic solvent (one or more of acetone, methyl ethyl ketone, ethyl acetate, n-propyl acetate, n-butyl acetate, sec-butyl acetate, accounting for 60% to 92% by weight), unable to meet the environmental protection needs of the current market
CN101407656B discloses a water-based transfer laser coating and a preparation method thereof, using one or several compounds such as acrylic acid emulsion, PVA, water-based chlorinated vinegar, aqueous polyurethane dispersion, acrylic modified polyurethane, vegetable oil modified polyurethane, etc., to obtain It has water-based transfer coatings with good moldability and printability, but does not mention the problem of medium fastness. From the results of our tests, it is not possible to obtain good medium fastness through simple compounding of these resins
[0005] In the patent CN104497743A, an environment-friendly water-based transfer coating is disclosed, which has the advantages of low cost and excellent stripping performance, but this invention also contains a small amount of organic solvent, and from the results of our tests, the obtained coating has a medium firmness. Degree and molded brightness is not very good
Method used
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Embodiment 1～4
[0030] A kind of water-based transfer laser paint for vacuum plating medium described in embodiments 1 to 4, its preparation method is as follows:
[0031] Take by weighing the parts by weight in each embodiment in Table 1, put water-based polyurethane resin, water-based acrylic modified polyurethane resin, water-based vinyl acetate resin in the reaction kettle and stir evenly, the stirring speed is 100~200rpm, and the stirring time is 5 ~10min;
[0032] Add the film-forming aid and deionized water premix into the reaction kettle under stirring, stir evenly, the stirring speed is 100-200rpm, and the stirring time is 10-15min;
[0033] Increase the stirring speed to 300-500rpm, add the leveling agent, abrasion agent and defoamer into the reaction kettle in turn, and stir for 20-30min;
[0034] After stirring evenly, use a 300-mesh filter to filter and pack.
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Abstract
The invention provides a water-based transfer laser paint for vacuum plating medium and a preparation method thereof. The paint comprises the following components and contents in parts by weight: 10-25 parts of water-based polyurethane resin; 3-10 parts of water-based acrylic modified polyurethane resin; 2-8 parts of water-based vinyl resin; 57-85 parts of deionized water; 0.5-5 parts of film-forming aid; 0.05-1 part of other additives. The prepared water-based transfer laser coating uses water as the main medium. Through the reasonable combination of resins, a water-based transfer laser coating with good medium fastness and moldability is obtained, which provides a new solution for the environmental protection and quality stability of the dielectric coating. Program.
Description
technical field [0001] The invention relates to a water-based transfer laser paint for vacuum plating medium and a preparation method thereof, in particular to a moldable water-based transfer laser paint with good medium fastness and a preparation method thereof. Background technique [0002] Vacuum aluminized transfer film has been widely used in the packaging industry, especially the cigarette packaging industry since around 2000, and has gradually penetrated into the packaging of high-end food and daily necessities such as chocolate packaging and cosmetic packaging. Due to the barrier properties of the aluminized layer, the vacuum aluminized transfer film cannot make a transparent effect (light cannot pass through), and cannot meet the needs of some high-end packaging materials (such as cosmetic packaging boxes) for transparent laser effects. Therefore, it has become more popular in recent years. The vacuum-plated zinc sulfide dielectric laser transfer film with good ligh...
Claims
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IPC IPC(8): C09D175/04C09D151/08C09D127/06C09D7/12
Inventor 董海普谢允斌
Owner SHANGHAI WEIKAI CHEM