The feed quantity shall be determined based on the fiber type and yarn count type. The lighter the yarn count, the less the feed quantity. Below is an example for each type of fiber.
|
应用举例 Example |
主要应用范围 Application Scope |
纤维类型 Fiber Type |
常规线密度 Normal Yarn Count |
|
丙纶滤芯纱 Polypropylene filter yarn |
线绕过滤器材 Wire-wound filter |
丙纶短纤维 Polypropylene short fiber |
500-1000tex |
|
脱脂棉滤芯纱 Degreasing cotton composite yarn |
线绕过滤器材 Wire-wound filter |
脱脂棉纤维 Degreasing cotton fiber |
800-1000tex |
|
玻璃纤维复合纱 Glass fiber composite yarn |
摩擦材料 Friction material |
玻璃纤维、其他化纤 Glass fiber and other chemical fiber |
1000-2000tex |
|
亚克力预氧化复合纱 Acrylic peroxidation composite yarn |
摩擦材料、密封材料 Friction material, sealing material |
腈纶、黏胶等 Acrylic fiber and viscose etc. |
800-1500tex |
|
芳纶或芳砜纶复合纱 Aramid or poly-sulfonamide composite yarn |
摩擦材料、密封材料、高强耐热阻燃材料 Friction material, sealing material, flame retardant material of high strength and heat resistance |
芳纶、芳砜纶、其他化纤混合 Mix of aramid, poly-sulfonamide and other chemical fibers |
800-2000tex |
|
拖把纱或擦地巾用纱 Yarn for mop or ground-wiping cloth |
拖把、擦地巾等清洁用品材料 Material for mop and wiping cloth etc. |
棉纺厂下脚料、加工绒、废纺二次纤维等 Scrap of cotton mill, processed animal hair, secondary fiber from waste spinning |
500-1500tex |
|
电线电缆钢丝绳芯纱 Steel cable yarn |
填充物 filler |
化纤、棉等各类纤维下脚料 Scrap of various fibers such as chemical fiber, and cotton etc. |
500-1800tex |
Technique Process Calculation
1. Total draft ration = output speed / input speed = fiber feed quantity per minute / fiber output quantity per minute
2. Theoretical yield per set per hour calculation (kg per set per hour) = fiber feed quantity (g/m) x feed speed (m/min)
X producing rate (%) x 60 (min) x 6 (spindle) / 1000
When calculating the covering yarn yield, the core yarn input quantity must be added.
It = core yarn count (tex/1000) x winding speed (m/min).
3. Winding tension calculation
Winding tention (times) = yarn output speed / winding speed
So the value is normally between 0.98-1.05, depending on the fiber quality, yarn strength, yarn twist and yarn count etc.
4. Implication and interconversion of yarn count, metric yarn count and British yarn count
Yarn count (TEX) = gram of meter length per day
Metric yarn count = meters per gram
Each yarn count (Nc) = numbers of 840yard in one pound of yarn
100% cotton yarn: yarn count x British yarn count = 583.1
Chemical yarn count (average) yarn count x British yarn count = 590
Yarn count x metric yarn count = 1000