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fiber curl and elastic. (4), silk filament is long and slender, with a special luster. (5) , chemical fiber, only dry viscose fibers, large differences in the wet state strength (6), has a very large spandex elastic, at room temperature, it can be stretched to more than five times the length of .2, microscopic observation: Yes according to the vertical surface, cross-section morphology to identify the non-woven fiber fiber microscope observation method: (1), cotton fibers: cross-sectional shape: round the waist with the waist; vertical surface shape: flat ribbon, a natural turn Qu (2), Ma (ramie, flax, jute) fiber: a cross-sectional shape: round or polygonal waist with the cavity; vertical surface morphology: there are cross sections,
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