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[ 2018-10-16 ] How do you distinguish between various non-woven materials? (1)

Author : Guide Nonwoven     
First, the visual inspection method: This method is applicable to non-woven raw materials in the state of loose fibers.

(1)Cotton fiber is shorter and thinner than ramie fiber and other hemp process fibers and wool fibers, often with various impurities and defects.

(2)Hemp fiber feels rougher.
(3)Wool fibers are curly and elastic.
(4)Silk is filament, long and slender, with a special luster.
(5)Among the chemical fibers, only the viscose fibers have a large difference in strength between dry and wet states.

(6)Spandex filaments have a very large elasticity and can stretch up to five times longer at room temperature.

Second, the microscope observation method: the non-woven fabric fiber is identified according to the longitudinal and sectional shape characteristics of the fiber.

(1)cotton fiber: cross-sectional shape: waist round, with a middle waist; vertical shape: flat ribbon, with natural rotation.

(2)Hemp (ramie, flax, jute) fiber: cross-sectional shape: waist round or polygonal, with a middle cavity; vertical form: cross section, vertical pattern.
(3)Wool fiber: cross-sectional shape: round or nearly round, some have a pulp; longitudinal form: scales on the surface.
(4)Rabbit hair fiber: cross-sectional shape: dumbbell type, with pulp; longitudinal shape: scales on the surface.
(5)Mulberry silk fiber: cross-sectional shape: irregular triangle; vertical shape: smooth and straight, longitudinally striped.
(6)Ordinary viscose: cross-sectional shape: zigzag, sheath core structure; vertical shape: longitudinal grooves.
(7)Rich and strong fiber: cross-sectional shape: less tooth shape, or round, elliptical; vertical shape: smooth surface.
(8)Acetate fiber: cross-sectional morphology: trilobal or irregular zigzag; longitudinal profile: longitudinal stripes on the surface.
(9)Acrylic fiber: cross-sectional shape: round, dumbbell or leaf shape; vertical shape: smooth or striped surface.
(10)Chlorine fiber: cross-sectional morphology: close to round; vertical shape: smooth surface.
(11)Spandex fiber: cross-sectional shape: irregular shape, round, potato-shaped; vertical shape: dark dark surface, unclear bone-shaped stripes.
(12)Polyester, nylon, polypropylene fiber: cross-sectional shape: round or shaped; vertical form: smooth.
(13)Velon fiber: cross-sectional shape: waist round, sheath core structure; vertical shape: 1~2 grooves.

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