Method for enhancing adhesive force between ethanol-soluble printing ink and polyethylene film

Abstract

The invention relates to a method for enhancing adhesive force between ethanol-soluble printing ink and a polyethylene film, and belongs to the technical field of film processing. The method comprises the steps that a layer of water-soluble adhesives are coated on the surface of the polyethylene film, the water-soluble adhesives are diluted with deionized water, and the ratio of the water-soluble adhesives to the deionized water is 10-5:1; coating is performed by adopting a coating machine and an anilox roller with the specification of 400 lines / CM, the temperature of an oven is controlled at 45-80 DEG C, the unwinding tension is set at 3.9-4.1 kg, the oven tension is set at 3.7-3.9 kg, the winding tension is set at 4.9-5.1 kg, the winding taper is set as 15 percent, and the wet coating amount is set at 0.75-1.25 g / m<2> when coating is performed. According to the method, the adhesive force between the ethanol-soluble printing ink and the polyethylene film is effectively enhanced, and therefore a good printing effect is achieved when surface printing is performed on the polyethylene film.

Description

technical field

[0001] The invention belongs to the technical field of film processing, and in particular relates to a method for enhancing the adhesion between alcohol-soluble ink and polyethylene film. Background technique

[0002] Surface printing of polyethylene film refers to the operation of printing graphics and text on the surface of the film. Surface printing requires good adhesion between the ink and the film, and has certain wear resistance, light resistance, freeze resistance and temperature resistance. sex. At present, the traditional benzene-soluble surface printing ink has a high adhesion to polyethylene film, and is currently widely used as a surface printing ink. However, benzene solvents are strong carcinogens. With the continuous enhancement of people's awareness of environmental protection, benzene-soluble inks will be gradually eliminated.

[0003] With the continuous development of surface printing inks, more and more alcohol-soluble inks have replace...

Examples

Embodiment 1

[0016] The method for enhancing the adhesion between alcohol-soluble ink and polyethylene film is characterized in that a layer of water-soluble adhesive is coated on the surface of polyethylene film, the water-soluble adhesive is diluted with deionized water, and the water-soluble adhesive The ratio of adhesive to deionized water is 8:1; wherein, the coating is carried out by a coating machine, using a screen roller with 400 lines / CM, the temperature of the oven is controlled at 60°C, and the tension setting: unwinding 4.0kg, The tension in the oven is 3.8kg, the winding is 5.0kg, the winding taper is set at 15%, and the wet coating amount during coating is 1.0g / m 2 .

[0017] The water-soluble adhesive includes the following raw materials in parts by mass: 83 parts of water-based epoxy resin, 8 parts of polyacrylamide, 16.1 parts of calcium lignosulfonate, and 58 parts of water. The preparation method of the water-soluble adhesive is as follows: add water-based epoxy resin ...

Embodiment 2

[0020] The method for enhancing the adhesion between alcohol-soluble ink and polyethylene film is characterized in that a layer of water-soluble adhesive is coated on the surface of polyethylene film, the water-soluble adhesive is diluted with deionized water, and the water-soluble adhesive The ratio of adhesive to deionized water is 10:1; wherein, the coating is carried out by a coating machine, using a screen roller with 400 lines / CM, the temperature of the oven is controlled at 45°C, and the tension setting is: unwinding 3.9kg, The tension in the oven is 3.7kg, the winding is 4.9kg, the winding taper is set at 15%, and the wet coating amount during coating is 0.75g / m 2 .

[0021] The water-soluble adhesive includes the following raw materials in parts by mass: 80 parts of water-based epoxy resin, 6 parts of polyacrylamide, 10.8 parts of calcium lignosulfonate, and 55 parts of water. The preparation method of the water-soluble adhesive is as follows: add water-based epoxy r...

Embodiment 3

[0024] The method for enhancing the adhesion between alcohol-soluble ink and polyethylene film is characterized in that a layer of water-soluble adhesive is coated on the surface of polyethylene film, the water-soluble adhesive is diluted with deionized water, and the water-soluble adhesive The ratio of adhesive to deionized water is 5:1; wherein, the coating is carried out by a coating machine, using a screen roller with 400 lines / CM, the temperature of the oven is controlled at 80°C, and the tension setting is: unwinding 4.1kg, The tension in the oven is 3.9kg, the winding is 5.1kg, the winding taper is set at 15%, and the wet coating amount during coating is 1.25g / m 2 .

[0025] The water-soluble adhesive includes the following raw materials in parts by mass: 85 parts of water-based epoxy resin, 10 parts of polyacrylamide, 22.1 parts of calcium lignosulfonate, and 60 parts of water. The preparation method of the water-soluble adhesive is as follows: add water-based epoxy r...

technical field

[0001] The invention belongs to the technical field of film processing, and in particular relates to a method for enhancing the adhesion between alcohol-soluble ink and polyethylene film. Background technique

[0002] Surface printing of polyethylene film refers to the operation of printing graphics and text on the surface of the film. Surface printing requires good adhesion between the ink and the film, and has certain wear resistance, light resistance, freeze resistance and temperature resistance. sex. At present, the traditional benzene-soluble surface printing ink has a high adhesion to polyethylene film, and is currently widely used as a surface printing ink. However, benzene solvents are strong carcinogens. With the continuous enhancement of people's awareness of environmental protection, benzene-soluble inks will be gradually eliminated.

[0003] With the continuous development of surface printing inks, more and more alcohol-soluble inks have replace...

Examples

Embodiment 1

[0016] The method for enhancing the adhesion between alcohol-soluble ink and polyethylene film is characterized in that a layer of water-soluble adhesive is coated on the surface of polyethylene film, the water-soluble adhesive is diluted with deionized water, and the water-soluble adhesive The ratio of adhesive to deionized water is 8:1; wherein, the coating is carried out by a coating machine, using a screen roller with 400 lines / CM, the temperature of the oven is controlled at 60°C, and the tension setting: unwinding 4.0kg, The tension in the oven is 3.8kg, the winding is 5.0kg, the winding taper is set at 15%, and the wet coating amount during coating is 1.0g / m 2 .

[0017] The water-soluble adhesive includes the following raw materials in parts by mass: 83 parts of water-based epoxy resin, 8 parts of polyacrylamide, 16.1 parts of calcium lignosulfonate, and 58 parts of water. The preparation method of the water-soluble adhesive is as follows: add water-based epoxy resin ...

Embodiment 2

[0020] The method for enhancing the adhesion between alcohol-soluble ink and polyethylene film is characterized in that a layer of water-soluble adhesive is coated on the surface of polyethylene film, the water-soluble adhesive is diluted with deionized water, and the water-soluble adhesive The ratio of adhesive to deionized water is 10:1; wherein, the coating is carried out by a coating machine, using a screen roller with 400 lines / CM, the temperature of the oven is controlled at 45°C, and the tension setting is: unwinding 3.9kg, The tension in the oven is 3.7kg, the winding is 4.9kg, the winding taper is set at 15%, and the wet coating amount during coating is 0.75g / m 2 .

[0021] The water-soluble adhesive includes the following raw materials in parts by mass: 80 parts of water-based epoxy resin, 6 parts of polyacrylamide, 10.8 parts of calcium lignosulfonate, and 55 parts of water. The preparation method of the water-soluble adhesive is as follows: add water-based epoxy r...

Embodiment 3

[0024] The method for enhancing the adhesion between alcohol-soluble ink and polyethylene film is characterized in that a layer of water-soluble adhesive is coated on the surface of polyethylene film, the water-soluble adhesive is diluted with deionized water, and the water-soluble adhesive The ratio of adhesive to deionized water is 5:1; wherein, the coating is carried out by a coating machine, using a screen roller with 400 lines / CM, the temperature of the oven is controlled at 80°C, and the tension setting is: unwinding 4.1kg, The tension in the oven is 3.9kg, the winding is 5.1kg, the winding taper is set at 15%, and the wet coating amount during coating is 1.25g / m 2 .

[0025] The water-soluble adhesive includes the following raw materials in parts by mass: 85 parts of water-based epoxy resin, 10 parts of polyacrylamide, 22.1 parts of calcium lignosulfonate, and 60 parts of water. The preparation method of the water-soluble adhesive is as follows: add water-based epoxy r...