Presentation on theme: "Chapter 3 Material of Fashion. The main content of this lesson What is textile fibers? Textile fiber character Classification of fibers Nature Fibers."— Presentation transcript:
3.1.3 Classification of fibers Natural fibers Natural fibers are taken from animal, vegetable, or mineral sources. Manufactured fibers Manufactured fibers are chemically produced.
Major Classification Of Natural Fibers NATURAL FIBERS CELLULOSE MINERAL PROTEIN asbestos Seed Hair Bast Leaf Animal Hair cotton linen wool silk kapok cashmere camel mohair
3.1.4 Natural Fibers 1.Cotton a.History: from India and Pakistan
b. Economic importance of cotton production: Worldwide more cotton is used than any other fiber.In 1997 cotton accounted for 43% of total world fiber consumption. China was the largest producer, growing 24.3% of the world total.followed by the United States (16%), India (15%), Pakistan (9%).
c. Properties of cotton Physical properties: -Color:white to tan( ) - Luster( ):low
-Shape:the diameter may range from 16 to 20 microns, lumen
Mechanical properties -Strength:weaker than flax and stronger than rayon( ), 10 to 20% stronger when wet than when dry. -Modulus( ):high, similar to that of polyester -Elongation and Recovery( ): low, wrinkle( ).
Chemical reactivity: Discussion:Talk about the use of cotton
d. Uses Widely uses.In wearing apparel, the qualities of comfort, dyeability and reasonable cost have led to its wide use in articles ranging from underwear to evening gowns. Be blended with other fibers,such as manufactured fibers,flax and ramie.
3.Sheeps wool b. Types of wool About two hundred different breeds and crossbreeds of sheep. The sheep produces the most valuable and finest wool is the Merino( ), 30%of wool production. Comes from Spain and the largest production in Australia.1 to 5 inches, fine and elastic. Four groups of sheep.
g.Properties of Wool Physical properties -Color: white to creamy white to light beige, yellow, brown, and black. Easy to dye. -Shape: to 70 microns in diameter, outer layer consists of a fine network of small overlapping scales, in felting and in shrinkage