What is paper?

What is paper? Paper is a wide and thin material that is made by pressing the fibers of materials such as wood pulp, flax, rice straw and stubble, sugarcane bagasse, etc., which are called cellulose fibers and is mostly used for writing and painting. However, it is also used for packaging (such as gift paper), building interior decoration, industrial and research filters, and other works.

In another answer to the question of what is paper, it can be said that its pulp is mostly made from coniferous wood. (due to having longer fibers) paper is one of the most important wood products. To make paper, the tree trunk is first converted into wood chips by a shredder.

Then, the wood chips are decomposed by chemicals and different methods in the pulp baking tower, and cellulose fibers are obtained from them, which is called paper pulp. A sheet of paper is made from the entanglement of cellulose fibers and after pressing them.

Paper is classified in terms of cutting according to different standards. One of the most important international classifications is Standard A. In this standard, from A0, which is the largest size, as the number increases, the size of the paper is halved, so that:

so that:

A0:84.1*118.9cm

A1:59.4*84.1 cm

A2:42*59.4 cm

A3:29.7*42 cm

A4:21*29.7 cm

A5:14.8*21 cm

A6:10.5*148 cm

Also read: History of paper making

Source : https://www.parkerlatifi.com/ShowPage/66/%DA%A9%D8%A7%D8%BA%D8%B0-%DA%86%DB%8C%D8%B3%D8%AA-

Pars Cellulose paper and cardboard store/cellulosic fibers