Paper type

There are many kinds of paper; Classification methods are also inconsistent. There are three ways to classify habits.

① According to the mode of production, it is divided into manual paper and machine-made paper. Hand-made paper is mainly made by manual operation, with curtain net frame and manual fishing one by one. Soft texture, strong water absorption, suitable for ink writing, painting and printing, such as China Xuan paper. Its output accounts for a small proportion of the total modern paper output. Machine-made paper refers to the general name of paper produced by mechanization, such as printing paper and wrapping paper.

② According to the thickness and weight of paper, it can be divided into paper and cardboard. There is no strict difference between the two. Generally speaking, paper weighing less than 200g per square meter and cardboard weighing more than 200 g are called. Cardboard accounts for about 40 ~ 50% of the total paper output, and is mainly used for commodity packaging, such as box cardboard and packaging cardboard. In the world, paper and cardboard are usually calculated separately.

③ According to the use, it is divided into: newsprint, which is a kind of special printing paper mainly used for news publication, and is traditionally classified as a single category because of its large proportion; Printing paper and writing paper, used for printing and writing, including painting paper; Wrapping paper; Technical papers (industrial and agricultural technical papers); Toilet paper; Processing base paper to further manufacture and process paper; Cardboard; Processing paper, etc.