Durable Decorative Wedding Banquet Chair Covers / Hotel Chair Covers

100% Polyester Durable Wedding Banquet Spandex Hotel Chair Covers

Spandex fiber has such high elasticity because its polymer chain is composed of a low melting point, amorphous "soft" segment as the matrix and a high melting point, crystalline "hard" segment embedded therein. The flexible chain segments have a certain network structure by a certain cross-linking. Due to the small interaction force between the molecular chains, they can freely expand and contract, resulting in large elongation properties. The rigid chain segment has a relatively large molecular chain binding force, and the molecular chain does not elongate without limitation, resulting in high resilience. The cross-section of the rayon filaments is mostly dog-bone-shaped and some filaments are smooth or jagged. The breaking strength is the lowest among all textile fibers, only 0.44~0.88CN/dtex (the strength of the polyether type is higher than that of the polyester type). The moisture absorption range is small, generally 0.3-1.2% (the multifilament moisture absorption rate is slightly higher than the monofilament). The heat resistance varies greatly depending on the variety. Most of the fibers are stored in the range of 90-150 ° C for a short time, the fiber will not be damaged, and the safe ironing temperature is below 150 ° C, which can be heated and disturbed. It has excellent dyeing performance, can be dyed into various colors, dye has strong affinity to fiber, can adapt to most varieties of dyes, and has good chemical resistance, resistant to most acids and alkalis, chemicals, organic solvents, Dry cleaners and bleaches, as well as sun and snow, but not resistant to oxides, easy to make the fiber yellow and strong.