Due to the soft texture, good ductility and silvery white luster of aluminum foil, if the rolled sheet is mounted on offset paper with sodium silicate, it can also be printed. However, aluminum foil itself is easy to oxidize and darken, and the color will fade due to friction and touch. Therefore, it is not suitable for hot stamping of long-term preserved book covers.
Aluminum foil can be classified as plain foil, embossed foil, composite foil, coated foil, colored foil and printed foil according to the added state.
① Plain foil: rolled aluminum foil without any other processing, also known as smooth foil.
② Embossed foil: aluminum foil with various patterns on the surface.
③ Composite foil: a composite foil formed by laminating aluminum foil with paper, plastic film and paperboard.
④ Coated foil: aluminum foil coated with various resins or paints.
⑤ Colored aluminum foil: aluminum foil coated with a single color on the surface.
⑥ Printed aluminum foil: aluminum foil packaging bag with various patterns, patterns, characters or pictures printed on the surface. It can be one color, up to 12 colors. http://www.ycritai.cn/