How to identify various non-woven materials

1.Hand and eye testing method: this method is suitable for nonwoven fabric materials in the state of loose fiber.

(1) Cotton fiber is shorter and thinner than ramie fiber and other ramie fibers, and it often has various impurities and defects.

(2) The handle of hemp fiber is rough and hard.

(3) The wool fiber is curly and elastic.

(4) silk is long and thin, with special luster.

(5) In chemical fiber, only viscose fiber has great difference in dry and wet strength.

(6) Spandex is very elastic, and its length can be stretched to more than five times at room temperature.

2. Microscopic observation: it is to identify the non-woven fiber according to its longitudinal and sectional morphological characteristics.

(1) Cotton fiber: cross section shape: waist round, with middle waist; longitudinal shape: flat belt, with natural turning.

(2) Ramie (ramie, flax, jute) fiber: cross section shape: waist round or polygonal, with middle cavity; longitudinal shape: cross section, vertical grain.

(3) Wool fiber: cross section shape: round or nearly round, some with pith; longitudinal shape: scale on the surface.

(4) Rabbit hair fiber: cross section shape: dumbbell type, with pith; longitudinal shape: with scales on the surface.

(5) Rilk fiber: cross section shape: irregular triangle; longitudinal shape: smooth and straight, with longitudinal stripes.

(6) Ordinary viscose fiber: cross section shape: zigzag, skin core structure; longitudinal shape: longitudinal groove.

(7) Rich and strong fiber: cross section shape: less teeth, or round, elliptical; longitudinal shape: smooth surface.

(8) Acetate fiber: cross section shape: trilobal or irregular zigzag; longitudinal shape: longitudinal stripes on the surface.

(9) Acrylic fiber: cross section shape: round, dumbbell or leaf; longitudinal shape: smooth or striped surface.

(10) PVC fiber: cross section shape: nearly round; longitudinal shape: smooth surface.

(11) Spandex fiber: cross section shape: irregular shape, round shape, potato shape; longitudinal shape: dark surface, unclear bone stripes.

(12) Polyester, nylon, polypropylene fiber: cross section shape: circular or irregular; longitudinal shape: smooth.

(13) Vinylon fiber: cross section shape: waist circle, skin core structure; longitudinal shape: 1-2 grooves.