1. Feel visual method: This method is suitable for non-woven raw materials in the state of scattered fibers.
(1), cotton fiber is shorter and thinner than ramie fiber and other hemp fiber and wool fiber, often with various impurities and defects.
(2), hemp fiber feel rough hard.
(3), wool fiber curl and elastic.
(4), silk is a filament, long and slender, with a special luster.
(5), chemical fiber only viscose fiber dry, wet state strength difference.
(6), spandex filament has a very large elasticity, at room temperature, its length can be stretched to more than five times.
2. Microscope observation method: non-woven fibers are identified according to the longitudinal and cross-sectional morphological characteristics of the fibers.
(1), cotton fiber: cross-sectional shape: round waist, waist; longitudinal shape: flat ribbon, natural turn.
(2) Hemp (ramie, flax, jute) fiber: cross-sectional shape: round or polygonal waist, with middle cavity; Longitudinal shape: with horizontal joints and vertical stripes.
(3), wool fiber: cross-sectional shape: round or approximate round, some hairy pith; longitudinal shape: surface scales.
(4), rabbit hair fiber: cross-sectional morphology: dumbbell, pith hair; longitudinal morphology: surface scales.
(5), mulberry silk fiber: cross-sectional shape: irregular triangle; longitudinal shape: smooth straight, longitudinal stripes.
(6), ordinary viscose: cross-sectional shape: zigzag, skin-core structure; longitudinal shape: longitudinal groove.
(7), rich and strong fiber: cross-sectional shape: less tooth shape, or round, oval; Longitudinal shape: smooth surface.
(8), acetate fiber: cross-sectional morphology: trilobal or irregular zigzag; longitudinal morphology: surface with longitudinal stripes.
(9) Acrylic fiber: cross-sectional shape: round, dumbbell-shaped or leaf-shaped; Longitudinal shape: smooth or striped surface.
(10), chlorinated fiber: cross-sectional shape: close to circular; longitudinal shape: smooth surface.
(11), spandex fiber: cross-sectional shape: irregular shape, round, potato-shaped; longitudinal shape: dark surface, showing unclear bone-shaped stripes.
(12), polyester, nylon, polypropylene fiber: cross-sectional shape: round or shaped; longitudinal shape: smooth.
(13), vinylon fiber: cross-sectional shape: waist round, skin-core structure; longitudinal shape: 1~2 grooves.
