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How to identify various non-woven materials

2023-02-24  336

1. Hand and eye measurement method: this method is applicable to non-woven raw materials in loose fiber state.

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

(2) The hemp fiber feels rough and hard.

(3) The wool fiber is curly and elastic.

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

(5) Of the chemical fibers, only viscose fibers have large differences in strength in dry and wet states.

(6) Spandex fiber has great elasticity, and its length can be stretched to more than five times at room temperature.


2. Microscopic observation method: It is used to identify non-woven fabrics according to the longitudinal and sectional morphological characteristics of the fibers.

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

(2) Ramie (ramie, flax, jute) fiber: cross section shape: waist round or polygonal, with middle cavity; Longitudinal shape: there are transverse sections and vertical lines.

(3) Wool fiber: cross section shape: round or nearly round, some with wool pulp; Longitudinal morphology: there are scales on the surface.

(4) Rabbit hair fiber: cross section shape: dumbbell type, with hair pulp; Longitudinal morphology: there are scales on the surface.

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

(6) Ordinary viscose fiber: cross section shape: serrated, leather core structure; Longitudinal shape: longitudinal groove.

(7) . Rich and strong fiber: cross section shape: less toothed, or round, oval; Longitudinal shape: smooth surface.

(8) Acetate fiber: cross section shape: trilobal or irregular serrated; Longitudinal shape: there are longitudinal stripes on the surface.

(9) . Acrylic fiber: cross section shape: round, dumbbell-shaped or leaf-shaped; Longitudinal shape: the surface is smooth or streaked.

(10) . Chlorine fiber: cross section shape: close to round; Longitudinal shape: smooth surface.

(11) Spandex fiber: cross section shape: irregular shape, with round shape and potato shape; Longitudinal shape: the surface is dark and deep, showing indistinct bone-shaped stripes.

(12) Polyester, nylon and polypropylene fiber: cross section shape: round or irregular; Longitudinal shape: smooth.

(13) . Vinylon fiber: cross section shape: waist round, leather core structure; Longitudinal shape: 1-2 grooves.


Information content is from the Internet, for reference only