Application of oily polyurethane resin in printing field

2025,06,07

Oily Polyurethane Resin is widely used in printing field, and its excellent physical properties and chemical stability make it an important part of printing ink. The following is a concrete analysis of the application of oily polyurethane resin in the printing field:

First, the role of ink components and resin binders

Printing ink is mainly composed of resin binder, pigment (or dye), additives and solvents. As the "heart" of ink, resin binder mainly plays the role of dispersing pigments and connecting substrates. Oily polyurethane resin is widely used in ink binders because of its unique properties.

Second, the performance advantages of oily polyurethane resin in ink

1. Excellent adhesion:

Oily polyurethane resin can be firmly combined with various substrates (such as paper, plastic, metal, etc.) to form good adhesion, so that printed patterns are not easy to fall off or wear.

2. Strong wear resistance:

Polyurethane resin has high hardness and wear resistance, can resist external forces such as scraping and friction, and keep the clarity and durability of printed patterns.

3. Good solvent resistance:

Polyurethane resin can remain stable in a variety of solvents and is not easy to dissolve or fall off, ensuring printing quality.

4. Good flexibility:

Polyurethane resin has low elastic modulus and certain flexibility, and can adapt to printing substrates with different shapes and curved surfaces.

5. Improve ink fluidity:

By adjusting the molecular structure and formula of polyurethane resin, the fluidity of ink can be improved, which makes it easier to evenly coat on the substrate during printing.

6. Improve the gloss of ink:

Polyurethane resin has excellent gloss, which can give high gloss effect to the surface of printed matter and improve the visual texture of products.

7. Enhance the heat resistance of ink:

Polyurethane resin has good heat resistance, can maintain stable printing effect in high temperature environment, and is suitable for printed matter that needs high temperature treatment.

Third, the application scenario

1. Plastic printing:

In the printing of plastic products such as plastic bags, plastic packaging boxes, plastic bottles, etc., oily polyurethane resin, as an important binder component, can give ink excellent performance and make printed patterns colorful and durable.

2. Packaging and printing:

In the packaging and printing of food and daily chemical products, oily polyurethane resin ink can ensure the firmness and durability of printed patterns and meet the requirements of packaging for aesthetics and practicality.

3. Label printing:

In the printing of commodity labels and special environmental labels, oily polyurethane resin ink can provide good wear resistance and weather resistance, and ensure the long-term readability of label information.

4. Industrial printing:

In the printing of metal, glass and other industrial products, oily polyurethane resin ink can provide good adhesion and chemical resistance to meet the high requirements of industrial products for printing quality.

Fourth, environmental trends

With the improvement of environmental awareness and the increasingly strict environmental laws and regulations, the ink industry has higher and higher requirements for environmental performance. Although oily polyurethane resin ink contains organic solvent, its environmental protection performance has been significantly improved compared with traditional benzene solvent-based ink. In addition, with the continuous development and promotion of environmental protection products such as water-based polyurethane ink and alcohol-soluble polyurethane ink, the environmental protection performance of oily polyurethane resin ink will be further improved.

Author:

Ms. Cherry

E-mail:

348754229@qq.com

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+86 13549820808