The weight of a small piece of sulfuric acid paper

A small piece of sulfuric acid paper weighs 73g. The gram weight is between 70 and 80g. In this gram, the transparency of the paper is ok, and it has a certain hardness. Below 70, it is too thin. Although it has good transparency, it is easily broken. Although hardness above 80 is good, transparency will have an impact. Kraft paper, also known as plate-making transfer paper sulfate, is mainly used in printing and plate-making industry. It has the characteristics of pure paper, high strength, good transparency, no deformation, sun resistance, high temperature resistance and aging resistance. Widely used in manual drawing, pen/inkjet CAD plotter, engineering electrostatic copying, laser printing, art printing, document recording and so on.