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15 Cards in this Set
- Front
- Back
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HVI System
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Length
Elongation to break micronaire trash content color strength |
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3 properties affected by moisture
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weight
static charge strength |
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2 factors affected by fiber strength
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yarn strength
processibility |
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4 required characteristics of textile fibers
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strength
high length to width ratio flexibility cohesiveness |
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short staple carded yarn processes
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bale lay down
opening carding drawing drawing roving spinning winding and clearing |
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6 factors influencing spinning tension
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traveler weight
traveler speed balloon surface area ring size yarn size spindle speed |
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8 influences of twist on yarn
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hand
absorbancy luster flexural endurance contraction strength abrasion resistance special effects |
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5 factors influence staple length
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fiber fineness
fiber crimp fiber finish fiber cross-sectional shape fiber stiffness |
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effects of reducing fiber length
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short fibers need more twist
short fibers give less strength short fibers have harder hand short fibers have less luster short fibers have higher cost of conversion |
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open end spinning processes
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drafting
fiber transport fiber collection twisting yarn removal winding |
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effects of fiber fineness
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spin limit
yarn strength nep count processibility |
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7 steps of texturing
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input flat yarn
heat deform cool remove deformation relax wind |
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6 properties of texture yarns
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more cover
softer hand better insulation more stretch more breathable less luster |
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why finish yarns
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lubrication
prevent end breaks prevent filament fusion prevent wear on machine prevent filaments from sticking to surfaces reduce static increase cohesion |
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worsted processing
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fiber prep
blending carding drafting drafting combing drafting drafting roving spinning winding and clearing |
