Conventional microfibers are mainly divided into two types: filament and short filament. Different fiber types have different spinning forms. The spinning forms of conventional ultrafine fiber filaments mainly include direct spinning and composite spinning. The spinning forms of conventional ultrafine fiber short filaments mainly include conventional fiber alkali reduction method, jet spinning method, and blend spinning method. wait.
1. Direct spinning method This method is a spinning technology that uses a traditional melt spinning process to prepare ultrafine fibers using a single raw material (polyester, nylon, polypropylene, etc.). The process is simple and easy to operate, but it is easy to prepare the fiber. Broken ends occur and the spinneret holes are easily blocked.
2. Composite spinning method This method uses composite spinning technology to produce composite fibers, and then uses physical or chemical treatment methods to separate the composite fibers into multiple phases, thereby obtaining ultra-fine fibers. The success of composite spinning technology marks the ultra-fine fiber. The real beginning of fine fiber development.
3. Conventional alkali reduction method: This method is mainly used for polyester fiber, using dilute alkali solution to treat polyester fiber to achieve the purpose of refining the fiber.
4. Jet spinning method This method mainly uses polypropylene as the spinning object, and sprays the low-viscosity polymer melt into short fibers through the jet air flow.
5. Blended spinning method This method is to melt and blend two or more polymer materials for spinning. Due to the differences in physical characteristics such as content and viscosity of different components, solvents can be used to achieve the purpose of spinning. separation to obtain discontinuous ultrafine short fibers.
Post time: Apr-17-2024