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Gold stamping UV gloss oil and preparation method and application thereof
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A technology of varnish and photosensitizer, which is applied in the direction of textiles and papermaking, coating, paper coating, etc., and can solve problems such as short-term effect of bronzing UV varnish, incomplete bronzing, poor adhesion, etc.
Active Publication Date: 2020-05-29
SHENZHEN GLAREWAY TECH CO LTD +1
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[0003] The existing bronzing UV varnishes are short-acting, and must be bronzed immediately after offset coating and UV light curing to form a film, and after multiple photocuring or photocuring once, it cannot be placed for more than 12 hours. Hot stamping or although it can be hot stamped, there will be defects such as broken hot stamping and poor adhesion
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[0065] The present invention also provides the preparation method of the bronzing UV varnish described in the above technical scheme, comprising the following steps:
[0066] Under heating conditions, the photosensitizer, photocrosslinking agent, amine co-initiator and leveling agent are stirred and refluxed and cooled in sequence to obtain the bronzing UV varnish.
[0067] In the present invention, the stirring and refluxing process is preferably to melt the photosensitizer in the range of 90-95° C., then mix it with the photocrosslinking agent, amine co-initiator and leveling agent, and then carry out stirring and refluxing.
[0068] In the present invention, the photosensitizer is melted in the range of 90-95°C, and then mixed with the photocrosslinking agent, amine co-initiator and leveling agent, which can ensure that the photosensitizer does not Coking occurs, ensuring the excellent quality and stability of the bronzable UV varnish product.
[0069] In the present inven...
Embodiment 1
[0079] Weigh 30g of hydroxyl acrylic resin, 10g of bisphenol A epoxy diacrylate, 10g of trimethylolpropane triacrylate, 216g of active amine B-216g, 39.7g of tripropylene glycol diacrylate, 0.3g of DC-57 leveling agent, 2,4,6-Trimethylbenzoyl diphenoxyphos 4g;
[0080] Put the raw materials into the reaction kettle, heat to 120°C, stir and reflux, control the stirring speed to 800r / min, and stir for 2h, cool to 40°C and discharge to obtain bronzing UV varnish.
Embodiment 2
[0082] Weigh 30g of hydroxyl acrylic resin, 10g of bisphenol A epoxy diacrylate, 10g of trimethylolpropane triacrylate, 216g of active amine B-216g, 39.7g of tripropylene glycol diacrylate, 0.3g of DC-57 leveling agent, 2,4,6-Trimethylbenzoyl diphenoxyphos 5g;
[0083] Put the raw materials into the reaction kettle, heat to 125°C, stir and reflux, control the stirring speed to 800r / min, and stir for 3h, cool to 40°C and discharge to obtain bronzing UV varnish.
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Abstract
The invention relates to the technical field of offset printing, in particular to gold stamping UV gloss oil and a preparation method and application thereof. Compared with the prior art, the UV glossoil capable of gold stamping provided by the invention has the advantages that a photo-crosslinking agent and a specific photosensitizer are matched with each other, so that the photo-curing efficiency and the photo-curing rate are improved; meanwhile, the UV gloss oil capable of gold stamping, provided by the invention, is subjected to photocuring for one time; the cross-linking density of the UV gloss oil film capable of gold stamping is not changed any more, the performance of the gold stamping UV gloss oil film is not changed even if multiple times of photocuring are carried out, so thatthe gold stamping requirements can still be met after the gold stamping UV gloss oil provided by the invention is placed for 12 months after one time of photocuring or after multiple times of photocuring, and the gold stamping surface is good in adhesive force and free of gold stamping defects.
Description
technical field [0001] The invention relates to the technical field of offset printing, in particular to a bronzing UV varnish and a preparation method and application thereof. Background technique [0002] In the packaging and printing process, in order to make the packaged products more attractive to consumers, hot stamping process and UV varnish process are widely used in product packaging. The bronzing UV varnish (bronzable UV-curable varnish) used in the UV varnish process can increase the friction resistance of the ink, protect the printed matter, improve the brightness of the printed matter, and make the packaging more vivid and eye-catching. [0003] The existing bronzing UV varnishes are short-acting, and must be bronzed immediately after offset coating and UV light curing to form a film, and after multiple photocuring or photocuring once, it cannot be placed for more than 12 hours. Hot stamping or although hot stamping can be done, there will be defects such as br...
Claims
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Application Information
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