類別
特色產品
FDY
FDY (全拉伸紗) – 技術規格
1. What is FDY?
FDY (全拉伸紗), also known as polyester drawn yarn, is a fully oriented filament yarn produced by a one-step spinning and drawing process (spin-draw process). Unlike POY (部分取向紗) which requires further drawing, FDY is already fully drawn and heat-set during manufacturing, resulting in a highly oriented molecular structure. FDY features high strength, low elongation, excellent dimensional stability, good smoothness, low static buildup, and outstanding dyeing uniformity.
2. 適用標準
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National Standard: GB/T 8960-2015 “Polyester drawn yarns” (effective from April 1, 2016), replacing GB/T 8960-2008.
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Scope: This standard applies to round-cross-section, semi-dull, and bright polyester drawn yarns with total linear density from 15 分特至 1,110 分特 和單絲線密度 0.3 分特至 7.0 分特. Other types may refer to this standard.
FDY products are typically graded into AA (優越的), 一個 (頭等艙), 和合格的 成績.
3. 主要物理特性
3.1 線密度 (細度)
線密度表示為 “分特/f” – 例如, 167 dtex/48 f 表示:
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分特: 重量（克） 10,000 米紗線.
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f: 單絲數量.
Common FDY fineness range: 15 丁~ 1000 D.
3.2 打破堅韌
紗線斷裂前所能承受的最大拉力, 表達於 厘牛/分特 or 克/丹尼爾.
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典型範圍: ≥ 3.0 – 4.5 厘牛/分特 (or ≥ 4.5 克/丹尼爾).
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High tenacity FDY variants can reach 7.8 – 8.0 厘牛/分特.
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意義: FDY’s high tenacity makes it suitable for applications requiring durability and strength.
3.3 斷裂伸長率
斷裂瞬間伸長率.
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典型範圍: 25% – 45%.
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High-tenacity FDY typically has lower elongation: 15% ± 2%.
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FDY has lower elongation compared to DTY, reflecting its fully drawn, high-orientation state.
3.4 沸水收縮
100℃水中處理後的收縮率.
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典型範圍: varies by product; some specialty FDY can reach 32% ± 6%.
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Critical for downstream weaving and dyeing processes.
3.5 取油 (胃)
Oil content on the yarn for lubrication and antistatic functions.
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典型範圍: 0.4% – 0.8%.
3.6 Interlacing (Intermingling)
Controlled interlace points for improved yarn cohesion and processing performance.
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典型範圍: varies by application; specialty FDY can have 15 ± 5 knots/m.
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Intermingled FDY yarns are suitable for direct twisting, warping, and weaving.
3.7 Color Fastness
| Fastness Type | Rating |
|---|---|
| Washing Fastness | Grade 4–5 |
| Light Fastness | Grade 5–8 |
4. 通用規格 & 典型參數
以下是基於行業數據的參考表:
| 規格 | 細度 (分特克斯) | 韌性 (厘牛/分特) | 伸長 (%) | 含油量 (%) | Interlacing |
|---|---|---|---|---|---|
| 250D (example) | 275 ± 5 | > 2.5 | 140 ± 5 | 0.40% | — |
| 150D (example) | 167 ± 5 | > 3.0 | 25 ± 5 | 2% | — |
| 300D (example) | 335 ± 5 | > 3.8 | 38 ± 10 | 0.8% | HIM 100 ± 10 |
Note: FDY generally has lower elongation and higher tenacity compared to DTY.
Common FDY Product Range (Semi-dull FDY):
| 丹尼爾範圍 | Filament Count Options |
|---|---|
| 50D | 24F, 36F, 48F, 72F |
| 75D | 36F, 72F, 144F |
| 100D | 36F, 48F, 72F, 144F |
| 150D | 36F, 48F, 96F, 288F |
| 200–250D | 48F, 72F, 84F, 96F |
| 300D | 72F, 96F, 576F |
| 400–500D | 96F, 192F |
5. 可選參數
FDY can be customized according to customer requirements:
| 範圍 | 可用選項 |
|---|---|
| 光澤 | 明亮的, 半消光, Full-dull |
| 截面形狀 | 圓形的, 三葉形, Flat |
| Tenacity level | Standard, High-tenacity, Ultra-high-tenacity |
| Shrinkage | Low-shrinkage, Standard, High-shrinkage |
| Color | Raw white, 原液染色 (各種顏色) |
6. 主要應用
FDY is widely used in apparel, 家用紡織品, 和工業應用:
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Apparel: suit fabrics, corduroy, silk-like fabrics
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Home textiles: curtain cloth, sofa fabric, bedspreads
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Industrial: ropes, webbing, sewing threads, coated fabrics, safety belts
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Processing equipment: rapier looms, water jet looms, air jet looms, warp knitting machines
Fine-denier FDY is suitable for lightweight, high-end fabrics, while medium-to-coarse denier FDY is used for industrial and upholstery applications.
