Classification of aluminum foil
Aluminum foil has a variety of classification, different aluminum foil also has a different role. Aluminum foil is now the following simple classification, according to the thickness of aluminum foil, shape, state or material can be classified.
Aluminum foil thickness difference can be divided into thick foil, single zero foil and double zero foil. ① thick foil: the thickness of 0.1 ~ 0.2mm foil. ② single piece of foil: thickness of 0.0lmm and less than 0.1mm foil. ③ double zero foil: the so-called double-foil is in its thickness in mm units of measurement when the decimal point after the two zero foil, usually less than 0.0075mm thickness of the aluminum foil. In English, the thick foil is called "heavy gauge foil", the single piece of foil is called "medium gauge foil" and the double foil is called "light gauge foil". Foreign sometimes the thickness of ≤ 40ltm aluminum foil called light gauge foil, and the thickness of> 40btm aluminum foil collectively referred to as heavy gauge foil.
Aluminum foil can be divided into roll-like aluminum foil and sheet aluminum foil. Most of the deep processing of aluminum foil was rolled-like supply, only a handful of hand-made packaging occasions with flake aluminum foil.
Aluminum foil according to the state can be divided into hard foil, semi-hard foil and soft foil. ① hard foil: after rolling without softening (annealing) of the aluminum foil, without degreasing treatment, the surface of the cloth there are poor. Therefore, hard foil in the printing, bonding, coating must be defatted before treatment, if used for forming can be used directly. ② semi-hard foil: aluminum foil hardness (or strength) between the rigid foil and soft foil foil, usually used for forming processing. ③ soft foil: after rolling through the full annealing and soften the aluminum foil, soft material, the surface without residual oil. At present most of the application areas, such as packaging, composite, electrical materials, etc., are using soft foil. Aluminum foil according to the surface state can be divided into a side of the light (single-sided) aluminum foil and two-sided light (double-sided light) aluminum foil. ① side of the aluminum foil: double-rolled aluminum foil, after the volume side of the bright side, side of the hair, such as aluminum foil called aluminum foil. The thickness of an aluminum foil is usually not more than o. 025mm. ② aluminum foil on both sides: a single roll of aluminum foil, two and roller contact, aluminum foil on both sides of the surface roughness is divided into two different surface mirror aluminum foil and ordinary two-sided aluminum foil. The thickness of the two-sided aluminum foil is generally not less than 0.01mm.
Aluminum foil by adding the state can be divided into foil, embossed foil, composite foil, coated foil, colored aluminum foil and printed aluminum foil. ① foil: after rolling without any other processing of aluminum foil, also known as light foil. ② embossed foil: the surface pressure of a variety of patterns of aluminum foil. ③ composite foil: the aluminum foil and paper, plastic film, cardboard paste in the formation of composite aluminum foil. ④ coated foil: the surface coated with various types of resin or paint aluminum foil. ⑤ colored aluminum foil: the surface coated with a single color of aluminum foil. ⑥ printing aluminum foil: through the printing on the surface to form a variety of patterns, patterns, text or screen aluminum foil, can be a color, up to 12 colors.
Aluminum foil has a light weight, good sealing and good cover - series of advantages, it is in many sectors of the national economy and people's daily life to obtain a wide range of applications, but it is mainly used for packaging, mechanical and electrical construction and three major areas.