Packaging roll film is a common thing in the factory, after cutting can be made into packaging bags, which can save a lot of costs for manufacturers who need a large number of packaging bags. The main points for attention of packaging film in printing ink color matching are printing substrate, overprint and sensory performance. And belongs to substrate substrate aluminum foil and transparent plastic film in color matching should also pay attention to.
1. Aluminum foil
There are pure aluminum foil (hard and soft) in aluminum, aluminum foil paper with paper and aluminum foil pasted together, and recently popular vacuum spraying aluminum film. Aluminum foil not only has metal feeling, but also has the function of air tightness similar to aluminum metal.

These film printing, in order to highlight the metallic feeling, some are printed with transparent ink, and some are printed on the white full plate. In the latter type of printing, attention should be paid to the effect of white ink concentration on the brightness of the pattern hue. White ink should use thick ink that can cover the aluminum foil as much as possible, otherwise it will turn gray and the pattern will become blurred. In addition, many aluminum foil must be pretreated. The type of ink selected will be affected by the type of treatment agent used.

2. Transparent plastic film
There are many kinds of plastic films, such as cellophane, OPP, CPP, pet, polyethylene, polystyrene and so on. These films are also used according to their uses, just like paper. Sometimes composite films are used according to the requirements of post-processing, air tightness, water tightness and oil tightness. These film printing can also be divided into surface printing and inner printing. Color matching is easier than when printing on paper. It is usually surface printing products and directly used for packaging food. Therefore, the ink used should have luster and friction resistance, and the ink type with similar gloss should be selected.
And the inside printing film, generally in the printing surface composite another film. Therefore, ink to consider its composite suitability. In the process of printing, the basic ink is selected. Food packaging includes not only biscuits, but also frozen, boiled, semi cooked and semi cooled food. The printing ink of boiled, semi cooked and semi cooled food packaging materials should select the basic ink suitable for its use. In addition, when printing in the inside, a layer of white ink is generally printed, so after printing white ink, you must confirm the hue.
Dongguan Beite packaging materials Co., Ltd. is a large-scale company specializing in the production of food grade composite packaging. It is a professional manufacturer of composite packaging bags. It uses new equipment to produce packaging bags and roll films, providing comprehensive, environmental protection and safety packaging services for the market. 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 the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries. We uphold the integrity of cooperation, good quality, good service business philosophy, won the industry's approval, products sold to all over the world; welcome friends from all walks of life to inquire, visit our factory to investigate guidance and business negotiations.