{"id":2987,"date":"2026-07-10T02:22:51","date_gmt":"2026-07-09T18:22:51","guid":{"rendered":"http:\/\/www.phutthamonthonmetalsheet.com\/blog\/?p=2987"},"modified":"2026-07-10T02:22:51","modified_gmt":"2026-07-09T18:22:51","slug":"how-to-improve-the-adhesion-of-printing-on-packaging-roll-film-4c16-b62d5b","status":"publish","type":"post","link":"http:\/\/www.phutthamonthonmetalsheet.com\/blog\/2026\/07\/10\/how-to-improve-the-adhesion-of-printing-on-packaging-roll-film-4c16-b62d5b\/","title":{"rendered":"How to improve the adhesion of printing on packaging roll film?"},"content":{"rendered":"

In the packaging industry, the adhesion of printing on packaging roll film is a critical factor that directly impacts the quality and visual appeal of the final product. As a packaging roll film supplier, I understand the importance of this issue and have accumulated a wealth of experience in ensuring excellent printing adhesion. In this blog post, I will share some effective strategies and techniques to improve the adhesion of printing on packaging roll film. Packaging Roll Film<\/a><\/p>\n

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Understanding the Basics of Printing Adhesion<\/h3>\n

Before delving into the methods of improving adhesion, it’s essential to understand the factors that influence it. Printing adhesion is primarily determined by the interaction between the ink and the film surface. Several factors can affect this interaction, including the type of film material, the surface energy of the film, the type of ink used, and the printing process.<\/p>\n

Selecting the Right Film Material<\/h3>\n

The choice of film material plays a crucial role in determining the adhesion of printing. Different film materials have different surface properties, which can significantly affect the ink’s ability to adhere to the film. For example, polypropylene (PP) and polyethylene (PE) films are widely used in packaging due to their excellent barrier properties and low cost. However, these films have relatively low surface energy, which can make it challenging for the ink to adhere.<\/p>\n

To overcome this challenge, it’s important to select films with a higher surface energy or to treat the film surface to increase its surface energy. One common method of increasing the surface energy of PP and PE films is corona treatment. Corona treatment exposes the film surface to a high-voltage electrical discharge, which creates polar groups on the surface of the film. These polar groups increase the surface energy of the film, making it more receptive to ink adhesion.<\/p>\n

Surface Preparation and Treatment<\/h3>\n

In addition to corona treatment, there are other surface preparation and treatment methods that can be used to improve the adhesion of printing on packaging roll film. One such method is flame treatment, which involves passing the film through a flame to increase its surface energy. Flame treatment is particularly effective for films with a high melting point, such as polyester (PET) films.<\/p>\n

Another surface treatment method is chemical treatment, which involves applying a chemical primer or coating to the film surface. Chemical primers and coatings can improve the adhesion of the ink by creating a chemical bond between the ink and the film surface. However, it’s important to choose the right primer or coating for the specific film material and ink system being used.<\/p>\n

Choosing the Right Ink<\/h3>\n

The type of ink used also plays a crucial role in determining the adhesion of printing on packaging roll film. Different inks have different chemical compositions and properties, which can affect their ability to adhere to the film surface. For example, solvent-based inks typically provide better adhesion than water-based inks due to their higher solvent content. However, solvent-based inks can also pose environmental and health risks, so it’s important to consider these factors when choosing an ink.<\/p>\n

In recent years, there has been a growing trend towards the use of UV-curable inks. UV-curable inks are cured using ultraviolet light, which causes the ink to crosslink and form a strong bond with the film surface. UV-curable inks offer several advantages over traditional solvent-based and water-based inks, including faster curing times, better adhesion, and lower environmental impact.<\/p>\n

Optimizing the Printing Process<\/h3>\n

The printing process itself can also have a significant impact on the adhesion of printing on packaging roll film. Several factors need to be optimized to ensure excellent adhesion, including the ink viscosity, the printing pressure, the drying temperature, and the curing time.<\/p>\n