It's a long story, so let's make it short. There are two algorithms for the price or selling price of protective film: the first is calculated according to the weight, that is, how much is it per kilogram? Second, according to the area of protective film, that is, how much is it per square meter?

Why are there such two algorithms? In fact, they are all produced according to the actual needs. The protective film is generally used in some places where the thickness stability or quality requirements are not very strict, such as tensile film and winding film. These protective films themselves are particularly tensile, and the thickness will fluctuate greatly during processing, so we use the weight to protect the rights and interests of customers. We sell them according to the weight, and there are many scales.

According to the price of the protective film, calculated by square meter, it is generally a protective film with high requirements, and the flatness and viscosity are very strict. Or the material of the protective film itself is expensive, and the unit consumption is relatively small, so it is more accurate to price it in kilograms.

For some special protective films, such as high-temperature resistant pet protective film and polyimide high-temperature protective film (high-temperature adhesive tape), the fixed length of a roll is 33 meters. The quotation is based on the width. How much is 1mm.