類別
特色產品
低彈絲
低彈絲 (拉伸變形紗) – 技術規格
1. What is DTY?
低彈絲 (Polyester Drawn Textured Yarn) is a textured polyester filament yarn produced from PET chips. The process starts with high‑speed spinning to produce POY (部分取向紗), which is then drawn and false‑twist textured. This process is efficient, cost‑effective, and yields high‑quality yarn with excellent bulk and stretch properties.
2. 適用標準
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National Standard: GB/T 14460‑2015 “Polyester drawn textured yarn” (effective from April 1, 2016), replacing GB/T 14460‑2008.
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業界標準: FZ/T 54134‑2022 “Antimony‑free polyester drawn textured yarn (低彈絲)” – applicable to round‑cross‑section, semi‑dull antimony‑free DTY with total linear density from 30 分特至 350 dtex and monofilament linear density from 0.5 分特至 5.6 分特.
DTY is graded into 優越的 (First), First‑class, 和合格的 products.
3. 主要物理特性
3.1 線密度 (細度)
Linear density indicates yarn thickness. Expressed as “dtex/f” – 例如, 167 dtex/48 f 表示:
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分特: 重量（克） 10,000 米紗線. 167 dtex = 10,000 m weighs 167 g.
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Denier (D): another unit; conversion: 1 D = dtex / 1.11, so 167 dtex ≈ 150 D.
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f: 單絲數量 (e.g., 48 f = 48 monofilaments).
Common DTY fineness range: 15 丁~ 1000 D, with filament counts from 24 f to 576 f.
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.
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Minimum requirement: generally ≥ 3.0 厘牛/分特.
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典型範圍: 3.0 – 4.8 厘牛/分特.
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意義: directly affects fabric tear strength and abrasion resistance. Low tenacity can cause weak fabrics and frequent breakage during weaving.
3.3 斷裂伸長率
斷裂瞬間伸長率.
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典型範圍: 18% – 30% (some products can be 25% ± 3%).
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Lower elongation usually gives better dyeing uniformity, higher strength, and higher crimp contraction; excessive elongation can produce stiff filaments, reduce shrinkage, and cause difficulties in setting and wrinkling during dyeing and finishing.
3.4 Crimp Contraction
Indicates bulkiness and elasticity of DTY.
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Regular DTY: generally ≤ 20%.
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High‑elastic network yarn: around 30%.
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Higher crimp contraction gives better bulk and fuller fabric hand.
3.5 沸水收縮
100℃水中處理後的收縮率.
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Critical for downstream weaving and dyeing. Too high may cause length shortage but good setting; too low may lead to poor setting and wrinkling.
3.6 Oil Pick‑Up (胃)
Oil content on the yarn, providing lubrication, 抗靜電, antibacterial, and antioxidative functions.
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Recommended levels by end‑use:
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Warp yarn: ~1.0%
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Knitting: ~1.5%
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High‑tension weaving (rapier, jacquard): ≥ 2.5%
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4. 通用規格 & 典型參數
| 規格 | Fineness Tolerance | 打破堅韌 | 斷裂伸長率 | 含油量 | Interlacing (N/m) |
|---|---|---|---|---|---|
| 150D/48f | ±2.5% | ≥3.1 cN/dtex | Center value ±6.0% | Center value ±0.30% | Center value ±6.0 |
| 250D/96f | ±2.5% | ≥3.2 cN/dtex | M% ±3% | M ±1.2% | M ±10 |
| 300D/96f | ±2.5% | ≥3.0 cN/dtex | 25±5% | ~2.0% | HIM 100±10 |
Note: “Center value” or “M” can be agreed between customer and supplier.
5. 可選參數
DTY can be customized according to customer requirements:
| 範圍 | 可用選項 |
|---|---|
| 光澤 | Super bright, bright, semi‑dull, full‑dull |
| Cross‑section shape | 圓形的, trilobal, flat |
| Interlacing level | Non‑interlaced (NIM), light, medium, heavy (HIM) |
| Twist | No twist, S‑twist, Z‑twist, S+Z |
| Shrinkage | Low, medium, high |
| Tenacity level | Low, normal, medium, high |
Interlacing degrees:
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NIM (non‑interlaced): 0 – 10 knots/m
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SIM (semi‑interlaced): 40 – 50 knots/m
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HIM (high‑interlaced): 100 – 120 knots/m
6. 主要應用
DTY is an ideal raw material for knitting (both warp and weft) and weaving. Major end‑uses include:
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Apparel: suits, shirts, sportswear
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Home textiles: quilt covers, bedspreads, mosquito nets, curtains, sofa fabrics
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Decoration: wall coverings, automotive interior fabrics
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Industrial textiles: luggage fabrics, seat covers
Fine‑denier DTY (especially trilobal cross‑section) is suitable for silk‑like fabrics, while medium‑to‑coarse denier is used for wool‑like fabrics.
