Do not understand the problem of the color of the composite film, look here!

1. Aluminum foil composite film: I believe many people are not very clear about the color of aluminum foil. In fact, the aluminum foil is gray, and the white printed film is combined with aluminum foil. It can be clearly seen that the composite color is grayish white. Although the aluminum foil has the disadvantage of being gray, it has the advantage of metallic luster. In the case of no white background, the ink is directly printed on the aluminum foil, which can produce a gloss effect which is not printed by the paper.

2. Aluminized composite film: Aluminized has a brighter luster than aluminum foil. The base color of the aluminized composite film is also gray, and the background color is also related to the thickness of the aluminized layer. If the thickness of the aluminized layer is too thin, the light transmittance is too good, and the thinned portion of the aluminized layer after the composite is gray. More powerful, even a bit black.

3. Transparent composite film: The transparent composite film does not have the problem of graying in the aluminum-plated or aluminum foil composite, but there is a problem that the overall effect may be affected by the contents of the package, and at the same time, the color of the other side of the package is also affected. Some transparent composite bags feel good before they are made into bags, but after the bag is made, the hue and saturation change due to the color of the back of the bag.

4. White: There are two kinds of white in general, yellowish white and blueish white. For bright and high-purity purple, you should not use a yellowish white ink as the background color or as a thinner, otherwise the color will become darker. Some texts are generally printed in a direct-pressed background. The background color may affect the color of the text, causing its color hue and saturation to change more or less.