Paper is a fibrous sheet material made from fibers based on a variety of materials: wood cellulose, synthetic polymers, mineral fibers (glass, basalt, and asbestos), and other material (wool, mica, metallic “whiskers,” and graphite) . The most common type of paper is writing paper. Its main feature is the capillary-porous structure that allows the absorption of inks, dyes, and graphite pencil powder. Paper (the Italian bambagia—cotton) is a fibrous sheet material. Paper with weight exceeding 250 g per m2 is called cardboard. Distinguishing between general-purpose paper (mass and non-mass) and special, a decision was made to divide paper into a number of classes for printing (newsprint, offset, etc.), writing, typing, drawing and crayon, for paper money, for vehicles (punch-card, ticker-tape, etc.), electrical (cable, capacitor, etc.), wrapping and packaging, etc.