Its fabric feel, drape good, UV resistance, low flammability and excellent processing performance; With natural antibacterial power, is beneficial to the weak acid environment, multiple washing, the antibacterial effect is stable and not weakened. Fabric quality is far better than ordinary fabric, tensile back plastic super deformation.Polylactic acid (PLA) is a thermoplastic resin. Theoretically, melt spinning is the most ideal fiber forming method. Melt spinning technology is more mature, less environmental pollution, low production cost, more conducive to automatic and flexible production, is the main forming method of polylactic acid fiber. However, melt spinning is easy to cause hydrolysis and thermal degradation of polylactic acid, so the water content of resin must be strictly controlled before spinning to ensure the stability of spinning process and the final quality of fiber. [5] In melt spinning, polylactic acid with a molecular weight of 330000 is used to obtain polylactic acid fibers after real drying and then melt spinning. The concrete steps include melt
spinning and thermal drawing.
Melt spinning: Under the protection of nitrogen, the polymer is fused and extruded by screw, and then coiled at the speed of 118~210 km/min.Hot stretch spinning: The primary fiber is stretched in two zones on a hot plate at 160℃.
Product Function:
As PLA fiber has good heat resistance, it can be made into filament, monofilament and non woven fabric, just like common PET fiber. The device does not need to make major changes to produce woven fabrics, straps, non-woven fabrics, etc. In addition,although PLA fiber has poor water absorption, it has good water diffusivity. For example, when blended with cotton, PLA fiber can be made into sweat-absorbing and quick-drying composite material. As a non-woven fiber material, it has good hand feel, drape and resilience, excellent crimp and crimp stability, and can control the shrinkage rate. The polylactic acid fibers were observed by microscope. The cross section of polylactic acid fibers was approximately circular, and the longitudinal section fibers were smooth and spotted.