Why does double zero aluminum foil have one side light and two sides light?Aluminum foil is generally less than 0.20 mm. thick There are three relatively strict categories of thick foil, single zero foil and double zero foil.
Thick foil: foil with thickness of 0.1~0.2 mm;
Single zero foil: foil with thickness of 0.01 mm and less than 0.1 mm/;
Double zero foil: the so-called double zero foil is the foil with two zeros after the decimal point when its thickness is measured in mm, Usually aluminum foil with thickness less than 0.01, That is ,0.005~0.009 mm of aluminum foil. The surface of aluminum foil generally presents two states: one side light and two sides light.
Single side aluminum foil: double rolled aluminum foil, After the roll, Black hair, Such aluminum foil is called a light aluminum foil. An aluminum foil is usually not more than o.025mm.
Thick Double sided aluminum foil: sheet rolled aluminum foil, Two paintings and roll contact, The two sides of aluminum foil are divided into mirror two-sided light aluminum foil and ordinary two-sided light aluminum foil because of the different surface roughness of the roll. Generally, the thickness of two-sided aluminum foil is not less than 0.01 mm.
Double zero aluminum foil can be made of many processes, Such as plain foil, embossed foil, composite foil, colored aluminum foil, printed aluminum foil and so on, Double zero aluminum foil as a material will naturally have defects, One of the biggest defects is easy to wrinkle. Because of the bad shape, Wrinkles when the foil is coiling or spreading, The essence is that the tension is not enough to flatten the foil surface. For a 20- MPa tension device, Aluminum foil shall not be more than 30 I, in shape For more than 30 I, Must wrinkle. Because the aluminum foil is often subjected to more tension than subsequent processing, Some only show bad shape when rolling, Including incorrect roller grinding, The roll is wrong, Bad shape of incoming material and incorrect adjustment of shape.