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A kind of surface treatment agent of pearlescent bopp film and preparation method thereof

A technology of surface treatment agent and thin film, which is applied in the direction of coating, polyurea/polyurethane coating, etc., can solve the problems of dull and not bright picture, difficult to control holes, and influence of inkjet effect, and achieve good hydrolysis resistance and leveling, Effect of reducing surface tension and improving pearlescent effect

Active Publication Date: 2019-08-02
HUIZHOU YIDU IMAGE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has some disadvantages. It will thicken the glue, which is not conducive to dispersion, affect the coating performance, cause scratches, increase the cost of coating, and it is difficult to control the pore volume. The effect has a certain impact. The matte powder added to cover the pearl will suck the ink into the micropores during printing, so that the printing color density is not high, and the picture looks dull and not bright.
[0005] BOPP manufacturers develop matte films by changing the extrusion formula of the top layer through multi-layer co-extrusion, but the cost is much higher than that of light films

Method used

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  • A kind of surface treatment agent of pearlescent bopp film and preparation method thereof
  • A kind of surface treatment agent of pearlescent bopp film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Surface treatment agent, its raw materials are: 2.5 parts of water-based polyacrylate emulsion, 1.5 parts of water-based anionic polyurethane dispersion, 1.5 parts of curing agent, 0.2 part of ammonia water, 0.02 part of wetting agent, and 6 parts of water.

[0034] Follow the steps below to prepare the surface treatment:

[0035] 1. Add water-based polyacrylate emulsion and deionized water (temperature: 10-20°C) into the mixing tank, start stirring to 200r / min, add water-based polyacrylate emulsion and wetting agent while stirring, and stir evenly;

[0036] 2. Add ammonia water to adjust the pH of the solution to 7-8, and stir evenly;

[0037] 3. Add water-based anionic polyurethane dispersion and stir evenly;

[0038] 4. Add curing agent and stir evenly;

[0039] 5. Filter with a 200-mesh filter for use. After preparation, it should be stored in a sealed environment at 10-20°C and used up within 4-6 hours.

Embodiment 2

[0041] Surface treatment agent, its raw materials are: 4 parts of water-based polyacrylate emulsion, 0.5 part of water-based anionic polyurethane dispersion, 2.5 parts of curing agent, 0.3 part of ammonia water, 0.05 part of wetting agent, and 10 parts of water.

[0042] Follow the steps below to prepare the surface treatment:

[0043] 1. Add water-based polyacrylate emulsion and deionized water (temperature: 10-20°C) into the mixing tank, start stirring to 300r / min, add water-based polyacrylate emulsion and wetting agent while stirring, and stir evenly;

[0044] 2. Add ammonia water to adjust the pH of the solution to 7-8, and stir evenly;

[0045] 3. Add water-based anionic polyurethane dispersion and stir evenly;

[0046] 4. Add curing agent and stir evenly;

[0047] 5. Filter with a 200-mesh filter for use. After preparation, it should be stored in a sealed environment at 10-20°C and used up within 4-6 hours.

Embodiment 3

[0049] Surface treatment agent, its raw materials are: 3 parts of water-based polyacrylate emulsion, 1 part of water-based anionic polyurethane dispersion, 1.2 parts of curing agent, 0.1 part of ammonia water, 0.05 part of wetting agent, and 8 parts of water.

[0050] Follow the steps below to prepare the surface treatment:

[0051] 1. Add water-based polyacrylate emulsion and deionized water (temperature: 10-20°C) into the mixing tank, start stirring to 300r / min, add water-based polyacrylate emulsion and wetting agent while stirring, and stir evenly;

[0052] 2. Add ammonia water to adjust the pH of the solution to 7-8, and stir evenly;

[0053] 3. Add water-based anionic polyurethane dispersion and stir evenly;

[0054] 4. Add curing agent and stir evenly;

[0055] 5. Filter with a 200-mesh filter for use. After preparation, it should be stored in a sealed environment at 10-20°C and used up within 4-6 hours.

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Abstract

Disclosed are a surface treating agent for a pearlylustre BOPP film and a preparation method therefor. The surface treating agent is prepared from the following raw materials in parts by weight: 2~4 parts of waterborne polyacrylate emulsion, 0.5~1.5 parts of waterborne anionic polyurethane dispersion, 1.2~2.5 parts of curing agent, 0.1~0.3 parts of ammonia water, 0.02~0.05 parts of wetting agent, and 6~10 parts of water. The surface treating agent forms a hard but flexible coat after cross-linking and curing on the surface of the BOPP film, and has outstanding adhesion force, water resistance and chemical resistance. By using the surface treating agent to modify the surface of the pearlylustre BOPP film, the pearlylustre of the BOPP film can be shielded, and the glossiness of the product can be reduced.

Description

technical field [0001] The invention belongs to the field of surface treatment agents, and in particular relates to a surface treatment agent for pearlescent BOPP films and a preparation method thereof. Background technique [0002] Domestic inkjet advertising consumables used indoors mainly use PVA as the bonding ink-absorbing layer, silica matting powder as the filler, and non-waterproof PP adhesive with BOPP film as the base material; before applying glue, the BOPP film needs The surface of the film is treated by means of corona and chemical reagents to enhance the adhesion between the coating and the film after painting. [0003] The surface treatment agent for BOPP pearlescent film currently used is generally chlorinated polypropylene, which is colorless and transparent after heating and drying. After applying the coat, it still cannot completely hide its pearlescent effect. After the product is printed, the pearlescent light will still appear, which will bring discom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D7/65
CPCC08L2205/03C09D7/65C09D175/04C08L75/04C08L83/12
Inventor 罗玉兰周传富
Owner HUIZHOU YIDU IMAGE TECH
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