Chapter_5_-_Protein_Fibers_-_Fall_2011_student_version

Chapter_5_-_Protein_Fibers_-_Fall_2011_student_version -...

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PROTEIN FIBERS CHAPTER 5 1
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Protein Fibers Classification I. Animal Hair Fibers Wool (from sheep) Specialty hair fibers Camel family alpaca, camel, llama, vicuna, guanaco, Goat family cashmere goat, angora goat, qiviut Fur fibers mink, chinchilla, beaver, fox, rabbit Other horsehair, cow hair 2
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Protein Fibers Classifications II. Fibers formed from extruded filaments Natural fibers silkworm cocoon fibers spider silk Manufactured fibers corn, soybeans, milk sources tofu 3
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THE PROTEIN FAMILY weaker than cellulosic fibers weaker wet than dry 4
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THE PROTEIN FAMILY greater resilience & elongation than cellulosic fibers lower specific gravity 5
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THE PROTEIN FAMILY sensitivity to heat do not burn readily lower ironing temperature 6
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THE PROTEIN FAMILY harmed by – oxidizing agents chlorine bleach bases/alkalis strongly-alkaline soaps/detergents sunlight 7
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Animal Hair Fibers earliest remains – Egypt – 4,000 B.C. wool historically other animal hair fibers sheared or cut from animal spun, woven currently most used sheep fleece 8
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Wool Products Labeling Act of 1939 1. All wool products must be labeled 2. All fibers contained must be identified 3. Terms that should be used to identify wool fiber never reclaimed from woven or felted products 9
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Wool Products Labeling Act of 1939 recycled wool fiber taken from a woven or felted product never used by consumer fiber from woven, knitted or felted product used by consumer new wool high quality never reclaimed 10
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Wool Products Labeling Act of 1939 4. When face fabric different than backing in pile fabric, fiber content may be listed separately If listed separately, % required 11
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Wool Products Labeling Act of 1939 5. Contents of padding, linings or stuffings designated separately from face 12
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Wool Products Labeling Act of 1939 garnetting process by which fibers from an unused or a used product are pulled apart & returned to a fibrous state 13
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Wool Products Labeling Act of 1939 shoddy made from garnetting 14
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SHEEP’S WOOL Types of Wool quality environmental conditions breed of sheep 15
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Breeds of Sheep merino Australia fine, elastic, strong fibers 1” - 5” staple length 16
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Breeds of Sheep French rambouillet descendant of Merino sheep fine, high quality fiber 1” – 5” staple length 17
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Long British or Long Crossbreeds short, dense wool coarser, longer 4” – 16” length outerwear, tweeds British Isles breeds not as fine Devonshire, Dorset, etc. 18
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Chapter_5_-_Protein_Fibers_-_Fall_2011_student_version -...

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