Aluminum foil

Aluminium foil is a kind of hot stamping material which is directly calendered into a sheet from aluminium metal. Its hot stamping effect is similar to that of pure silver foil stamping, so it is also called fake silver foil.

Since aluminium has a soft texture and good ductility, it has a silvery white lustre. If the calendared sheet is smashed on an offset paper with a material such as sodium silicate, an aluminium foil sheet can be formed, and printing can be performed.

Aluminium film material is commonly used in the middle layer structure of food bag packaging, playing roles such as air sealing, sun protection and barrier effect.

However, the aluminium foil itself is easily oxidised, and the colour is darkened; friction, touch, and the like also discolour it, making it unsuitable for the hot stamping of a book cover that has been preserved for a long time.

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