Full-aqueous release coating for electrochemical aluminum hot stamping foil and preparation method of coating

A hot stamping foil, fully water-based technology, applied in the direction of copying/marking methods, wax coatings, polyurea/polyurethane coatings, etc., can solve the problems of demulsification utilization rate, increased release agent concentration, low waste, etc., to achieve separation Excellent molding effect, improved dispersion and stability, and wide application range

Active Publication Date: 2019-08-09
云南玉溪东魅包装材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of quality defects such as increased concentration and demulsification of the release agent in the use process of the existing alcohol-water system release coating and low utilization rate and large waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An all-water-based release coating for hot stamping foil of anodized aluminum, the specific formula is calculated in parts by weight: 94.1 parts of pure water, 2 parts of water-based polyurethane emulsion, 1 part of water-based acrylic emulsion, 0.5 parts of polyurethane crosslinking agent, water-based 2 parts of wax emulsion, 0.3 part of wetting agent, and 0.1 part of defoamer.

[0025] Follow the steps below for production:

[0026] a. Put the purified water, water-based polyurethane emulsion, and water-based acrylic emulsion weighed according to the proportioning ratio into the container successively, stir for 10-20min at normal temperature, and stir at a speed of 100-300r / min, and stir evenly to obtain mixed solution A;

[0027] B, put the polyurethane cross-linking agent weighed by proportioning into the mixed solution A, stir 10-20min at normal temperature, the stirring speed is 100-300r / min, stir evenly, get the mixed solution B;

[0028] C, put the wetting agen...

Embodiment 2

[0032]An all-water-based release coating for hot stamping foil of anodized aluminum, the specific formula is calculated in parts by weight: 92.25 parts of purified water, 3 parts of anionic polycarbonate polyurethane aqueous dispersion, anionic methacrylate copolymer 0.8 parts of emulsion, 0.75 parts of polycarbodiimide crosslinking agent, 2.5 parts of water-based wax emulsion, 0.4 part of octylphenol polyoxyethylene ether nonionic wetting agent, and 0.3 part of polyether siloxane copolymer emulsion.

[0033] Follow the steps below for production:

[0034] a. Put the purified water weighed according to the ratio, the anionic polycarbonate polyurethane aqueous dispersion, and the anionic methacrylate copolymer emulsion into the container in sequence, stir at room temperature for 10-20min, and the stirring speed is 100-300r / min, stir well to get mixed solution A;

[0035] B, drop the polycarbodiimide cross-linking agent weighed according to the proportion into the mixed soluti...

Embodiment 3

[0040] An all-water-based release coating for hot stamping foil of anodized aluminum, the specific formula is calculated in parts by weight: 90.5 parts of purified water, 4 parts of anionic polycarbonate polyurethane aqueous dispersion, anionic methacrylate copolymer 0.5 parts of emulsion, 1 part of polyurethane crosslinking agent, 3 parts of water-based wax emulsion, 0.5 parts of wetting agent, and 0.5 parts of defoaming agent.

[0041] Follow the steps below for production:

[0042] a. Put the purified water, water-based polyurethane emulsion, and water-based acrylic emulsion weighed according to the proportioning ratio into the container successively, stir for 10-20min at normal temperature, and stir at a speed of 100-300r / min, and stir evenly to obtain mixed solution A;

[0043] B, put the polyurethane cross-linking agent weighed by proportioning into the mixed solution A, stir 10-20min at normal temperature, the stirring speed is 100-300r / min, stir evenly, get the mixed s...

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Abstract

The invention provides a full-aqueous release coating for an electrochemical aluminum hot stamping foil and a preparation method of the coating. When a release coating in an alcohol-water system is inuse, because the volatilization of ethyl alcohol and demulsification of a wax emulsion cause the quality defects such as concentration rising, which affects the release tightness of a product, and the utilization rate of the release coating in the alcohol-water system is low, a large amount of waste is caused. The full-aqueous release coating is prepared from, by weight, 80-98 parts of purified water, 1-5 parts of an aqueous polyurethane emulsion, 0.1-1 part of an aqueous acrylic emulsion, 0.1-1 part of a polyurethane crosslinking agent, 1-5 parts of an aqueous wax emulsion, 0.1-0.5 part of awetting agent and 0.1-1 part of a defoaming agent. The release coating improves the water resistance, solvent resistance, temperature resistance and mechanical properties of coating film; the recoating performance of the release coating is good, and coating requirements of subsequent colored layer coating can be met; the release effect is excellent, a hot stamping layer is transferred completely,and the release tightness is adjusted by adjusting the addition amount of a release agent.

Description

technical field [0001] The invention relates to the technical field of thin film coating products, and more specifically relates to a fully water-based release coating for anodized aluminum hot stamping foil. Background technique [0002] Anodized aluminum hot stamping foil is mainly composed of base film layer, release layer, coloring layer, vacuum aluminized layer and hot melt adhesive layer, it is a kind of hot stamping material. The hot stamping layer transferred to the surface of the substrate by the principle of hot pressing has a shiny metallic luster effect, which can produce a strong visual impact, and its application field is constantly expanding. [0003] Among them, the release layer is one of the key coatings of the anodized aluminum hot stamping foil, and its main function is to provide the transferability of the base film layer and other coatings. At present, the domestic hot stamping foil production enterprises generally use the alcohol-water system, that is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D133/04C09D133/10C09D191/06C09D7/65C09D7/20B41M5/52
CPCB41M5/52B41M5/5254B41M5/5281C08L2205/035C09D175/04C09D191/06C09D7/20C09D7/65C08L33/04C08L79/00C08L91/06C08L33/10C08L75/04
Inventor 何宗修龚麟杨正德陈诗阳
Owner 云南玉溪东魅包装材料有限公司
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