The deep processing of aluminum foil mainly includes:
1.Composite
The aluminum foil is bonded to a plastic film, paper, cellophane or the like with a binder or by coating with PE or the like to form a composite film for various uses.
2. Coloring
The aluminum foil can be used in various colors on the coloring machine, and it is expected to have a metallic luster to form a unique gloss color and enhance the decorative performance.
3. Printing
Aluminum foil can be printed directly or after surface coating, generally using flexographic printing, gravure printing and screen printing. Since the aluminum foil is not absorbent and has a poor surface adsorption capacity, it is necessary to dry by evaporation of the solvent in the coating during printing. In addition, the aluminum foil is very soft, so it is necessary to ensure that the softness of the printing ink after drying is consistent with the aluminum foil, and the phenomenon of cracking, small pieces falling off or even overall separation of the ink film occurs. When printing, the thin aluminum foil should be palletized or padded before printing to prevent the aluminum foil from breaking. The printed aluminum foil is used as a sales packaging material, and its special gloss is matched with the ink to have a good product decorative effect.
4. Embossing
Aluminum foil can be pressed on the embossing machine to produce a variety of light and dark patterns, used to wrap food, very decorative effect. Aluminum foil embossing also improves surface flatness and eliminates slight wrinkles.
