The definition of microfibers is different, and fibers having a denier of 0.3 denier (5 micrometers in diameter) or less are generally referred to as ultrafine fibers. Foreign countries have produced 0.00009 denier ultra-fine filaments. If such a filament is pulled from the earth to the moon, its weight will not exceed 5 grams. China has been able to produce 0.13-0.3 denier ultrafine fibers.
Due to the extremely fineness of the microfiber, the stiffness of the filament is greatly reduced, and the fabric feel is extremely soft. The fine fiber can also increase the layered structure of the filament, increase the specific surface area and capillary effect, and make the reflected light inside the fiber more finely distributed on the surface. It has a silky elegant luster and good moisture absorption and moisture permeability. Made of microfiber, it is comfortable, beautiful, warm, breathable, has good drape and fullness, and has obvious improvement in hydrophobicity and antifouling properties. It can be designed with different specific surface structure due to its large specific surface area and softness. More absorption of sunlight heat or faster loss of body temperature plays a role in warm winter and cool summer.
