Water-based color laminated adhesive and preparation method thereof

Abstract

The invention discloses a water-based color laminated adhesive and a preparation method thereof. The preparation method comprises the following steps: step 1, pouring color paste and the water-based laminated adhesive into a stirrer and fully mixing; step 2, adding the mixture obtained in the step 1 into a glue disc on a film laminating machine, and adjusting a proper amount of glue; 3, the material obtained in the step 2 passes through a film laminating machine drying system, a gluing system, a tension system and a press machine, the colored coating film and the paper are fully bonded together, and film laminating glue is obtained; one-time forming of printing and film covering can be achieved, waiting time is not needed for subsequent procedures such as deep embossing hydraulic pressure, die cutting gold stamping and UV after film covering, water-based color paste adopted by the product is environmentally friendly, free of pollution and free of peculiar smell, the waiting time is shortened, and the subsequent procedures can be directly carried out.

Description

Technical Field

[0001] The invention relates to the technical field of printing, in particular to a water-based color laminating adhesive and a preparation method thereof. Background Art

[0002] Laminating technology is a surface processing technology after printing, also known as post-printing lamination, post-printing gluing or post-printing lamination. It refers to the use of a laminating machine to cover the surface of the printed product with a layer of 0.012~0.020mm thick transparent plastic film to form a paper-plastic product processing technology. Generally speaking, it can be divided into two types according to the process used: instant coating and pre-coating, and divided into two types according to the different film materials: glossy film and matte film. The adhesive used in the traditional laminating process is mainly solvent-based. The main adhesive of the solvent-based adhesive is SBS and terpene resin, and the solvent is toluene, No. 120 gasoline, ethyl acetate, etc. Since some components in printing ink are similar to those of solvent-based laminating adhesives, both contain resins and organic solvents, so the quality of paper-plastic composite is not very stable. Solvent-based adhesives have disadvantages such as low flash point, flammability, toxicity and harm, environmental pollution and impact on the health of operators.

[0003] Printing and packaging single-color full-page solid printing is prone to ink streaking, the printing ink is difficult to dry and takes a long time, the lamination is prone to whitening and filming, and there is a series of factors such as powder spraying and printing ink pollution. Summary of the invention

[0004] The object of the present invention is to provide a water-based color coating adhesive and a preparation method thereof to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A water-based color coating adhesive comprises a color paste and a water-based coating adhesive.

[0006] A water-based color laminating adhesive and a preparation method thereof, comprising the following steps: Step 1: Pour the color paste and water-based coating adhesive into a blender and mix thoroughly; Step 2: Add the mixture obtained in step 1 to the glue plate on the laminating machine and adjust the appropriate amount of glue; Step 3: Pass the material obtained in step 2 through a laminating machine drying system, a gluing system, a tension system and a press to fully bond the colored coating film and the paper together to obtain a laminating adhesive.

[0007] As a further technical solution of the present invention: the ratio of the color paste to the water-based coating adhesive in step 1 is 1:5.

[0008] As a further technical solution of the present invention: if bubbles appear during the coating process, about 0.3-0.8 percent of a defoaming agent is added to remove them.

[0009] As a further technical solution of the present invention: if water droplets appear during the production process or the drying degree is insufficient, about 0.5% of industrial alcohol is added during the stirring process of the mixer to accelerate the drying.

[0010] As a further technical solution of the present invention: the components of the water-based coating adhesive are styrene, acrylic copolymer emulsion and deionized water, and the pH value is 7.0±0.2.

[0011] Compared with the prior art, the beneficial effects of the present invention are: the present invention can realize one-time molding of printing and lamination, and all subsequent processes such as deep embossing hydraulics, die-cutting, hot stamping and UV, etc., do not require waiting time after lamination. This product uses water-based color paste, which is environmentally friendly, pollution-free and odorless, reducing waiting time and allowing direct subsequent processes. DETAILED DESCRIPTION

[0012] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0013] A water-based color laminating adhesive and a preparation method thereof, wherein water-based color pastes of various colors (according to color requirements) and water-based laminating adhesive (milky white) are selected and poured in a ratio of 1:5 (the color depth ratio is appropriately adjusted), and the two are fully blended together by being fully stirred in a mixer. The appropriate amount of glue is added to the glue plate of the laminating machine, and the colored coating film and paper are fully bonded together through the drying system, gluing system, tension system, pressure and appropriate temperature of the laminating machine. From the surface of the paper, both the visual effect and the hand feel quality are very smooth and the smoothness is also very good. If small bubbles occasionally appear during the coating process, a defoamer of about 0.3-0.8% can be added to remove them. If water droplets appear during the production process or the drying degree is not reached, about 0.5% of industrial alcohol can be added when the mixer is stirred to help improve the drying and speed. This product (colored water-based laminating adhesive) is suitable for bonding the film and paper with color in the laminating process to achieve a sticky effect and color effect between the film and paper.

[0014] The invention aims at a series of factors such as ink streaking easily in full-page solid printing of printing and packaging, long time for the printing ink to dry out, easy whitening of the lamination film, film peeling, powder spraying and large pollution of printing ink.

[0015] This product mainly solves all the above problems and achieves one-time forming of printing and lamination. After lamination, the subsequent processes such as deep embossing hydraulic pressure, die-cutting, hot stamping and UV all do not require waiting time. This product uses water-based color paste, which is environmentally friendly and pollution-free, and has no odor, which reduces waiting time and allows direct access to subsequent processes.

[0016] This product can also achieve waste utilization, such as printing waste paper, materials with wrong specifications, wrong printing or wrong layout, which can be reused in other products after color lamination by this product, thus reducing waste of resources.

[0017] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0018] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A water-based color coating adhesive, characterized in that: Including color paste and water-based laminating adhesive.

2. A water-based color coating adhesive and a method for making the same, characterized in that: The following steps are involved: Step 1: Pour the color paste and water-based coating adhesive into a blender and mix thoroughly; Step 2: Add the mixture obtained in step 1 to the glue plate on the laminating machine and adjust the appropriate amount of glue; Step 3: Pass the material obtained in step 2 through a laminating machine drying system, a gluing system, a tension system and a press to fully bond the colored coating film and the paper together to obtain a laminating adhesive.

3. The water-based color coating adhesive and the method for making the same according to claim 2, characterized in that: The ratio of the color paste to the water-based coating adhesive in step 1 is 1:

5.

4. The water-based color coating adhesive and the method for making the same according to claim 2, characterized in that: If bubbles appear during coating, add about 0.3-0.8% of defoaming agent to remove them.

5. The water-based color coating adhesive and the method for making the same according to claim 2, characterized in that: If water droplets appear during the production process or the drying degree is insufficient, add about 0.5% industrial alcohol during the mixing process of the mixer to accelerate the drying.

6. The water-based color laminating adhesive and the method for making the same according to claim 2, characterized in that: The components of the water-based coating adhesive are styrene, acrylic copolymer emulsion and deionized water, with a pH value of 7.0±0.2.