The use of synthetic fibers (such as nylon, rayon, polyester, etc.) to make paper began about 1953-1954. By the 1960s, there had been a relatively large development.
Due to the hydrophobicity of synthetic fibers, it is difficult to segregate and form "hydrogen bonds" during beating. Therefore, various adhesives, wetting agents, dispersants, etc. must be used in papermaking to form paper.
It can be produced alone or with a certain amount of plant fibers, and the synthetic fiber paper is made on a general fourdrinier paper machine. Since the concentration of the slurry in the headbox is low, about 0.025% (flocculation will occur if the concentration is too high), the inclined net sizing method is used to speed up the water filtration process. The surface of the drying cylinder should be coated with silicone resin to prevent "sticking cylinder". In order to avoid the breakage of synthetic fiber paper caused by shrinkage during drying, the drying cylinders should be controlled individually. After the paper is finished, it needs to be heat-pressed to make the synthetic fibers stick to each other and maintain a stable strength.
It can be seen that the strength of synthetic fiber paper is relatively high in both dry and wet conditions, and it can resist acid, alkali, corrosion, is stable to oxidation, and is not afraid of microbial erosion. Since the quality of various synthetic fibers is different, each synthetic fiber paper has its unique properties. For example, polyamide (synthetic fiber) paper has high elasticity, good toughness and high strength.
Synthetic fiber paper has many commercial names for different uses. They can be used as book cover paper, poster paper, wall paper, liner paper, etc. Most synthetic fiber papers require special inks to be printed to obtain satisfactory results. At present, this kind of paper is generally not used for cultural applications, and is mostly used as industrial technical paper.
