Functional requirements of coating fabrics
The coating can not only improve the feel, appearance and style of the fabric but also increase the performance of the fabric so that the fabric has special functions such as fire resistance coatings. The coating fabric is widely used in down jacket rainproof pike, jacket, tent, shoes and socks, curtain, luggage and advanced waterproof and moisture permeable function of ski shirt, mountain climbing clothes, windbreaker, etc. It can also be applied to sailing, fishing, offshore oil well, transportation and other fields. From the fashion market, many casual clothes are made of coating fabrics, the main styles are undershirts, jacket shirts, using PU coating, the texture is relatively light and thin. The color of coating fabric tends to be light and elegant, with light blue, light gray, light purple, etc. The biggest advantage is that it feels smooth, rainproof and easy to clean. The consumer group of coated clothing is mainly young men and women and high school students, this kind of clothing is not expensive, the style changes a lot, catering to the consumer characteristics of young people. To get a comprehensive understanding of coating fabrics, we need to analyze fabric coating finishing from three aspects: chemical structure, using medium and technical process. FR coating, soft and elastic, high strength, moisture permeability and breathability, wear resistance, moisture resistance, dry cleaning resistance, but higher cost, poor weather resistance, easy to yellow and brittle, encounter water, heat, alkali will be hydrolyzed, commonly used in clothing, interior decoration cloth. FR coating, transparent, not easy to yellow, good weather resistance, conducive to the production of colored coating products, in addition to good resistance to washing, strong adhesion, lower cost. However, it has poor elasticity, easy to crease, poor surface finish, and difficult to adjust handfeel. It is commonly used in umbrella cloth, raincoat, anti-feather cloth, etc. Fire Retardant coating, when the plasticizer content is high, it shows high elongation, softness, good feel and abrasion resistance; when the plasticizer content decreases, its softness and elongation decrease, while hardness, tensile strength and abrasion resistance increase. FR coating is inexpensive, but the heat resistance is poor, with a softening point of 80℃ and decomposition and discoloration starting at 130℃. FR coating is often used for raincoats, etc. The FR coating process is to use organic solvents or water to dissolve the coating gum particles into a fluid state and then use a squeegee or spray to evenly apply on the ordinary fabric, after natural evaporation or baking to make the water or organic solvents in the dissolved gum particles evaporate out so that the surface of the fabric also formed a coating film.
