Common materials for color boxes: white cardboard, gold and silver cards, double copper paper, kraft paper.
White cardboard:
White cardboard is generally divided into: blue and white single and double-sided copperplate cardboard, white-bottom copperplate cardboard, and gray-bottom copperplate cardboard. A single-layer or multi-layer combined paper made entirely of bleached chemical pulping and fully sizing is suitable for printing and product packaging, and the general basis weight is above 150g/㎡. The characteristics of this paper jam are: high smoothness, good stiffness, neat appearance and good evenness.
Gold and silver cardboard:
Gold and silver cardboard uses UV transfer technology to coat a layer of UV oil on the surface of the paper through a blanket, and then transfer the beam of light or special patterns to the printing paper through a roller.
Double coated paper:
refers to double-sided coated paper. Double-sided coated paper is a kind of coated paper, which is coated on both sides and has good smoothness on both sides. Coated paper also includes single copper, cuprous copper, high-gloss copper, artistic copper and so on.
Kraft paper:
Kraft paper generally has a rough surface and high strength. Usually yellowish brown. Semi-bleached or fully bleached kraft pulp is light brown, cream or white.