One of the most basic requirements for printed products is to maintain the color consistency of printed products. Due to the continuous change of printing conditions, color consistency is difficult to be absolutely controlled. Post press processing and environment will affect the consistency of ink color.
Influence of post press processing and environment on ink consistency
1. The influence of the change of post press processing technology on the consistency of ink color. Different post press processing technologies (e.g. extrusion compounding and dry compounding) have a certain influence on the color hue of printed matter. For example, the high temperature environment of extrusion and lamination can sometimes cause the color change of printed matter. For example, when heat sealing is carried out at the temperature above 200 ℃, the color phase of the heated part of the printed matter may become darker. This is because the colorant melts when heated, and recrystallization after cooling will form microcrystals, which will enhance the coloring power.
2. The influence of the change of substrate on the consistency of ink color in post press processing, such as the aluminum layer of aluminum film, will directly affect the overall color of printed matter. Of course, printing substrate color deviation will also have a slight impact on the overall hue of printed matter.
3. The influence of photochemical reaction on the consistency of ink color. When the light resistance and weather resistance of colorants are poor, the color of ink may change due to photochemical reaction.
4. The influence of contents on the consistency of ink color of printed matter. If the contents of the package contain volatile and mobile active substances, the color of the printed matter may change due to corrosion. Therefore, the appropriate ink should be selected according to the end use of the packaging content.
Dongguan Beite packaging materials Co., Ltd. - located in Dongguan City, a world famous manufacturing city, is a subsidiary company of Beite packaging (China) Co., Ltd
With an area of 6000 square meters, it is a flexible packaging enterprise integrating R & D, production and sales. It has a complete set of advanced production equipment in China
We provide customers with high-quality products and first-class service with the support of the humanized management system and a group of experienced technical personnel.
The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for food, daily chemicals, and other special-shaped bags
Electronic, toys, medicine, cosmetics, industrial products and other industries of internal and external packaging.
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