Heat Resistance Soft Stretch White Seat Covers For Weddings 300gsm Weight

100% Polyester And Spandex Cover Chair With Hotel Chair Covers

Elastane fibers have a high elongation at break (400% or more), a low modulus and a high elastic recovery. Spandex has high elongation (500% to 700%), low modulus of elasticity (200% elongation, 0.04 to 0.12 g/denier) and high elastic recovery (200% elongation, 95% to 99%). In addition to high strength, other physical and mechanical properties are very similar to natural latex yarns. It is more resistant to chemical degradation than latex yarns, has moderate thermal stability, and has a softening temperature above about 200 °C. Most dyes and finishes for synthetic and natural fibers are also suitable for dyeing and finishing spandex. Spandex is sweat-resistant, sea-resistant and resistant to a wide range of dry cleaners and most sunscreens. Prolonged exposure to sunlight or fading in chlorine bleach. It is not recommended to expose to the sun and chlorine bleach.

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.