Low-VOC (volatile organic compound) photocuring laser transfer paint and preparation method thereof

A technology of laser transfer and transfer coating, which is applied in the direction of coating, etc., can solve the problems that cannot meet the production requirements, and achieve the effects of wide application range, high molding yield and simple production process

Inactive Publication Date: 2015-12-16
SHANGHAI WEIKAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now, as people's requirements for packaging are getting higher and higher, laser patterns with deep grooves (depth of micron level) have appeared, and the existing solvent-based composite laser coatings can no longer meet production requirements.

Method used

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  • Low-VOC (volatile organic compound) photocuring laser transfer paint and preparation method thereof
  • Low-VOC (volatile organic compound) photocuring laser transfer paint and preparation method thereof
  • Low-VOC (volatile organic compound) photocuring laser transfer paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment relates to a low-VOC photocurable laser transfer coating for tobacco packaging, which includes the components shown in Table 1 in parts by weight.

[0032] Table 1

[0033]

[0034]

[0035] The preparation method of the transfer coating of the present embodiment comprises the following processing steps:

[0036] (1) Dissolve the above polyurethane acrylate in TMPTA after baking at 60-70°C for 1 hour, and stir until fully dissolved;

[0037] (2) Stir the above-mentioned organosilicon-modified epoxy acrylate and the remaining HDDA active diluent until fully dissolved;

[0038] (3) Stir and mix the mixture obtained in step (2) with the mixture obtained in step (1);

[0039] (4) add above-mentioned initiator and co-initiator in step (3) gained mixture, high-speed stirring mixes;

[0040] (5) Add the above-mentioned polyether-type modified silicone leveling agent, silane coupling agent, and polyether-modified silicone oil to the mixture obtained in ...

Embodiment 2

[0051] This embodiment relates to a low-VOC photocurable laser transfer coating for tobacco packaging, which includes the components shown in Table 3 in parts by weight.

[0052] table 3

[0053]

[0054] The preparation method of the transfer coating of the present embodiment comprises the following processing steps:

[0055] (1) Dissolve the above polyurethane acrylate in HDDA after drying at 60-70°C for 1 hour, and stir until fully dissolved;

[0056] (2) Stir the above-mentioned organosilicon-modified epoxy acrylate and TMPTA reactive diluent until fully dissolved;

[0057](3) Stir and mix the mixture obtained in step (2) with the mixture obtained in step (1);

[0058] (4) add above-mentioned initiator and co-initiator in step (3) gained mixture, high-speed stirring mixes;

[0059] (5) Add the above-mentioned polyether-type modified silicone leveling agent, silane coupling agent, and polyether-modified silicone oil to the mixture obtained in step (4), stir and mix ev...

Embodiment 3

[0062] This embodiment relates to a low-VOC photocurable laser transfer coating for tobacco packaging, which includes the components shown in Table 4 in parts by weight.

[0063] Table 4

[0064]

[0065] The preparation method of the transfer coating of the present embodiment comprises the following processing steps:

[0066] (1) Dissolve the above polyurethane acrylate in 20kg of HDDA and DPGDA mixed solution after drying at 60-70°C for 1 hour, and stir until fully dissolved;

[0067] (2) Stir the mixed solution of the above-mentioned organosilicon-modified epoxy acrylate with the remaining HDDA and DPGDA until fully dissolved;

[0068] (3) Stir and mix the mixture obtained in step (2) with the mixture obtained in step (1);

[0069] (4) add above-mentioned initiator and co-initiator in step (3) gained mixture, high-speed stirring mixes;

[0070] (5) Add the above-mentioned polyether-type modified silicone leveling agent, silane coupling agent, and polyether-modified si...

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Abstract

The invention discloses a low-VOC (volatile organic compound) photocuring laser transfer paint and a preparation method thereof. The transfer paint comprises 30-70 parts of low-polymer resin, 5-10 parts of thermoplastic resin, 30-70 parts of reactive diluent, 3-7 parts of photoinitiator, 1-10 parts of auxiliary initiator, 0.01-0.1 part of adhesion promoter, 0.01-0.1 part of leveling assistant and 0.01-0.1 part of release assistant. The preparation method comprises the following steps: respectively dissolving the low-polymer resin and thermoplastic resin in the reactive diluent; adding the photoinitiator and auxiliary initiator, and uniformly mixing; and adding the leveling assistant, adhesion promoter and release assistant, uniformly mixing and cooling. The photocuring laser transfer paint does not release any organic solvent, and almost does not have any harmful VOC residue. The low-VOC photocuring laser transfer paint has the advantages of excellent rubbing resistance, wide application range and high die pressing yield, can be used for die pressing to obtain micron-sized laser holographic patterns, and does not need to previously coat any release layer.

Description

technical field [0001] The invention relates to the field of preparation of photocurable laser transfer coatings, in particular to a low-VOC photocurable laser transfer coating and a preparation method thereof. Background technique [0002] With the increasing awareness of environmental protection, countries all over the world have successively formulated the limit standards and regulations for the emission of volatile organic compounds (VOCs). With the tightening of the country's policy on food packaging quality and safety, environmental protection issues are becoming more and more important. Today, with the increasing awareness of environmental protection, people have higher standards for the development of coatings, and the environmental protection of coatings has become the general trend. In the tobacco industry, on February 26, 2008, the State Tobacco Administration officially released the volatile organic compound (VOCs) standard for tobacco packaging, which limits th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D4/06C09D7/12
Inventor 董海普丁志红成雨田谢允斌
Owner SHANGHAI WEIKAI CHEM
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