Classification of aluminium foil
The aluminum foil can be divided into hard foil, semi hard foil and soft foil according to the state.Hard foil: after rolling without softening treatment (annealing) of aluminum foil, without degreasing treatment, the surface can not be damaged. Therefore, the hard foil must be degreased before printing, laminating, and coating, and can be used directly if it is used for forming.Foil: the hardness (or strength) of aluminum foil between a hard foil and a soft foil, usually used in forming.Soft foil: aluminum foil which is softened after annealing and has soft material and no residual oil on the surface. Soft foils are used in most applications such as packaging, composite and electrical materials. According to the surface state of aluminum foil can be divided into a light aluminum foil and aluminum foil is smooth on both sides.
The thickness of aluminum foil can be divided into thick foil, single zero foil and double zero foil according to thickness difference.Thick foil ("heavy gaugefoil"): foil with a thickness of 0.1 to 0.2mm.Single zero foil ("medium gauge foil"): foil with a thickness of 0.01mm and less than 0.1mm/.Double zero foil (light, gauge, foil): the so-called double zero foil is the thickness of mm as a unit of measurement, after the decimal point has two zero foil, usually less than 0.01 of the thickness of aluminum foil, that is, 0.005~0.009mm foil. Foreign sometimes less than 40ltm thickness of the foil is called "light gauge foil", and the thickness of >40btm foil heavy gauge foil referred to as "". Aluminum foil can be divided into coil foil and sheet foil by shape. Most of the deep wool of aluminum foil is supplied in rolls, and only a small number of hand packed aluminum foil is used in industrial packaging.
A single light aluminum foil: aluminium foil double rolling, the volume after the side light side of Ukraine, this is called a light aluminum foil. The thickness of an optical foil is usually no more than 0.025mm.Double faced aluminum foil: single rolled aluminum foil, both sides and roller contact, the two sides of aluminum foil because of the different surface roughness of the roll is divided into mirror surface, two sides light aluminum foil and ordinary two surface light aluminum foil. The thickness of two sides of optical aluminum foil is generally not less than 0.01mm. The aluminum foil can be divided into plain foil, embossed foil, composite foil, coated foil, colored aluminum foil and printed aluminum foil according to the processing state.Prime foil: rolled aluminum foil without any other processing, also called light foil.Embossing foil: aluminum foil embossed with various patterns on the surface.Composite foil: aluminum foil and paper, plastic film and cardboard are bonded together to form a composite aluminum foil.Coating foil: aluminium foil coated with various resins or lacquer on the surface.Color foil: the surface is coated with a single color aluminum foil. The aluminum foil printing: formed by printing on the surface of a variety of patterns, patterns and characters on the screen or the aluminum foil can be a color, up to a maximum of 12 colors.Soft aluminum foil can be further suppressed into 40 foil, used for high-end decoration.
