Aluminum foil is a very thin metal sheet, usually between 0.006mm and 0.2mm thick. According to the different processing techniques and uses of the material, aluminum foil can be divided into two types: hard aluminum foil and soft aluminum foil.
Generally, the hardness of aluminum foil is divided into three levels: soft, semi-hard and hard. Among them, the hardness of soft aluminum foil is below 20HB, the hardness of semi-hard aluminum foil is between 20HB-35HB, and the hardness of hard aluminum foil is above 35HB.
Hard foil: Aluminum foil that has not been softened (annealed) after rolling. If it is not degreased, there will be residues on the surface. Therefore, rigid foils are degreased before printing, lamination, and coating, and can be used directly if used for forming processing.
After high-temperature tempering treatment, hard aluminum foil has a smooth, flat surface, high hardness, strong tensile strength and heat resistance. Therefore, hard aluminum foil is suitable for use in high temperature environments. Usually used in food packaging, pharmaceutical packaging, etc.
As a professional aluminum foil manufacturer, MC Aluminum specializes in the production of various types and conditions of aluminum foil. It can be customized according to customer needs and exported to many overseas countries and regions. After-sales service is guaranteed, and users can order with confidence.