Adhesion of coating materials: the key to clear patterns and texts on printed films

In the production and application of printed films, the adhesion of coating materials plays a vital role. This property determines the firmness of ink on the surface of the printed film, which in turn affects the clarity of patterns and texts of printed products under long-term use or exposure to various environmental conditions.

The adhesion of coating materials refers to the bonding ability between ink and the surface of the printed film. It determines whether the patterns and texts of printed products can remain clear and complete when they are used for a long time or exposed to complex environmental conditions. Good adhesion can ensure that the ink is tightly attached to the printed film and is not easy to fall off or blur, thereby improving the quality and durability of printed products.

The impact of adhesion on printing performance
Pattern and text clarity: The adhesion of coating materials directly affects the clarity of patterns and texts of printed products. When the adhesion is good, the ink can be evenly distributed on the surface of the printed film to form clear and sharp patterns and texts. On the contrary, if the adhesion is poor, the ink is easy to fall off or blur during the printing process, resulting in a decrease in the quality of the printed product.
Durability: Good adhesion can also improve the durability of printed products. Under long-term use or exposure to various environmental conditions, such as friction, scratching, temperature changes, etc., the coating material can maintain a close bond with the ink, ensuring that the pattern and text are not easy to fall off or blur. This is especially important for printed materials that need to be stored or displayed for a long time.

In order to improve the adhesion of the coating material, the following methods can be used:
Optimize the coating formula: By adjusting the formula of the coating material, such as adding an appropriate amount of tackifier, cross-linking agent, etc., the bonding ability between the coating material and the ink can be improved.
Improve the printing process: Using appropriate printing processes, such as controlling printing pressure, ink viscosity, etc., can ensure that the ink forms a uniform ink layer on the surface of the printed film and improve adhesion.
Surface pretreatment: Pretreatment of the printed film surface, such as corona treatment, chemical treatment, etc., can increase its surface roughness or introduce polar groups to improve the adhesion between the coating material and the ink.

With the continuous development of printing technology and the continuous changes in market demand, the requirements for the adhesion of printed film coating materials are also getting higher and higher. In the future, the research and development of coating materials will pay more attention to improving their adhesion performance to meet a wider range of application needs. At the same time, with the increasingly stringent environmental regulations and the increasing demand of consumers for environmentally friendly products, the research and development of environmentally friendly and high-performance coating materials will also become an important trend in the future.

The adhesion of coating materials has a crucial impact on the printing performance of printed films. By optimizing the coating formula, improving the printing process and surface pretreatment, the adhesion of coating materials can be improved, thereby ensuring that the printed products can still maintain clear patterns and texts under long-term use or exposure to various environmental conditions.