Fortune Telling Collection - Zodiac Analysis - The use of constellation paper _ What are the uses of constellation paper?
The use of constellation paper _ What are the uses of constellation paper?
The uses of paper are:
It can be used for cleaning, writing, packaging, decoration and as a printing carrier, such as printing paper, carbon paper, toilet paper, facial paper and so on. Paper is a kind of thin sheet made of plant fiber, which can be folded at will for writing. Due to the invention and popularization of paper, people can no longer use mud, stone, wood, pottery, metal and other materials to record words or pictures, and also make a lot of ancient information spread and preserved.
Classification of paper:
(1) is divided into handmade paper and machine-made paper according to the mode of production. Hand-made paper is mainly made by manual operation, curtain netting and manual fishing. 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 term for mechanically produced paper, such as printing paper.
(2) According to the thickness and weight of paper, it is 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 cardboard for packaging.
(3) According to the purpose, it can be divided into wrapping paper, printing paper, industrial paper, office paper, cultural paper, household paper and special paper.
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