Polyvinyl Alcohol Powder CAS 9002-89-5 Poly(vinyl alcohol) PVA

1. Application in wool textile industry
   10%~20% water-soluble polyvinyl alcohol (PVA) fiber tops are mixed with wool and spun to make fabrics, and then the water-soluble fibers are removed in the dyeing and finishing stage, which can increase the wool count by about 20%, so as to obtain light weight and softness , fluffy, drape and stretchable wool fabrics.
2. Application in cotton spinning industry
   After the polyvinyl alcohol (PVA) water-soluble fiber and cotton are blended into yarn, it is knitted or woven into a grey fabric, and the PVA water-soluble fiber is removed in the post-treatment to obtain a thin, soft and cool spinning style, as well as excellent moisture absorption, breathability and comfortable wearing. Taking performance. Compared with traditional textiles that use Xinjiang long-staple cotton and imported Egyptian cotton as raw materials, supplemented by sophisticated spinning equipment and strict and reasonable process conditions, high-count yarns can be spun, which greatly reduces production costs and improves product quality. After the core-spun yarn with water-soluble fiber as skin and cotton fiber as the core is used to make a towel, then the water-soluble fiber is removed by hot water treatment. This kind of towel also has the characteristics of not cutting velvet but slightly glowing, and it is a high-grade towel by visual inspection and hand feeling like a velvet towel.
3. Application of PVA water-soluble filament
   PVA water-soluble filament can be dissolved in water at 5~100℃, with ideal water-soluble temperature, high strength, good acid and alkali resistance and dry heat resistance. Weaving polyvinyl alcohol (PVA) water-soluble filament instead of ordinary yarn between two socks to be separated, cancel the process of separating socks by automatic separation machine or scissors. Water-soluble fibers are used for fabric warp sizing, and have the advantages of uniform sizing, stable chemical structure, good corrosion resistance, and simple and easy process. After weaving with polyvinyl alcohol (PVA) water-soluble filaments as weft yarns, the weft yarns are dissolved in hot water to make non-weft felts. The water-soluble non-woven fabric can be used as the base fabric for embroidery in the garment industry. After processing, the non-woven fabric can be treated in hot water to obtain hollow and three-dimensional embroidery.
4. Application in military
   Water-soluble fibers are used for surface mines to block ports or waterways, water-soluble parachutes for airdrop agents, and protective work clothes for nuclear submarine operators.

At present, China’s paper industry is facing two main difficulties. One is that the quality of this type of pulp has dropped significantly due to the dwarfing of wheat straw and the degradation of reeds. However, the quality of waste paper pulp is low, and how to ensure the quality of paper products and reduce costs has become a difficult problem for paper mills.

Adding an appropriate amount of PVA water-soluble fiber to the paper can significantly improve the paper strength, breakage resistance, folding resistance, tear strength and surface printing strength. The strengthening mechanism is that the PVA water-soluble fiber macromolecules have a large number of hydroxyl groups, which can form a large amount of hydrogen bonding force with the pulp fiber, and can dissolve into semi-soluble bonding fibers when the paper is dried. The strength of the water-soluble fiber is much greater than that of the pulp fiber. Therefore, Can greatly improve the strength of the paper.