The color fastness of PET shrink film customization printing is a crucial consideration, which directly affects the appearance quality and durability of product packaging.
First of all, PET shrink film itself has certain characteristics, and its material has a certain influence on the fastness of printed colors. PET shrink film usually has a high surface finish and hardness, which requires special treatment for the ink to adhere to its surface. Generally speaking, the use of advanced printing technology and high-quality inks can improve the color fastness. For example, printing with UV inks, which is cured by ultraviolet radiation, can better combine the ink with the surface of PET shrink film, thereby improving the color fastness and durability.
In the printing process, the choice of printing process also plays a key role in color fastness. Different printing methods, such as gravure printing, flexographic printing, screen printing, etc., have different printing effects and color fastness. Gravure printing can usually achieve higher printing accuracy and color saturation, and the color fastness is relatively high. Flexographic printing is environmentally friendly and efficient, and can also perform well for some specific color requirements. Screen printing is suitable for some special patterns and color effects, but its color fastness may be affected to a certain extent.
In addition, the post-printing processing process will also affect the color fastness. For example, lamination, glazing and other treatments can increase the wear resistance and scratch resistance of the printed surface, thereby improving the color fastness. At the same time, reasonable storage and transportation conditions are also very important. Avoiding adverse environments such as high temperature, high humidity, and direct sunlight can effectively prevent color fading and shedding.
In order to ensure the color fastness of PET shrink film customization printing, suppliers usually conduct strict quality inspections. These tests include friction tests, water resistance tests, light resistance tests, etc. to ensure that the printed colors remain stable under various conditions of use. When choosing a supplier, customers can ask to see the relevant test reports and quality assurance measures to ensure that they get high-quality customized shrink film.
In short, the color fastness of PET shrink film customization printing depends on many factors, including materials, printing processes, processing processes, storage and transportation conditions, etc. By choosing the right supplier and printing method, and strictly controlling the quality of each link, you can get PET shrink film packaging with high color fastness and exquisite appearance, which provides strong support for the sales and promotion of products.
