T: +86-13758587081
E: longtaiyarn@sina.com
E: longtaiyarn@sina.com
Longtai Textile, Building 58, Yuwang Xincun, Datang Street, Zhuji City, Shaoxing City, Zhejiang Province, China.
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4075D/24F
Longtai
Our ACY 40 75D/24F Polyester DTY Spandex Covered Yarn is a high-elasticity solution for modern textiles, designed to deliver comfort, support, and durability in stretch fabrics. This innovative yarn features a spandex core (20% by weight) covered by a polyester DTY (draw-textured yarn) outer layer using air-covered yarn (ACY) technology—where compressed air wraps the polyester around the spandex core uniformly. This construction delivers 8–10% stretch and 98% recovery after 1,000+ cycles, ensuring garments retain their shape through repeated wear. Ideal for sportswear, swimwear, and compression garments, it combines dynamic stretch with moisture-wicking performance, making it a favorite for active and body-hugging designs.
Material: 80% polyester DTY (75D/24F, high-tenacity) + 20% spandex (20D core, high-elasticity)
Yarn Count: 40s (medium-fine, 11–13 tex) for lightweight, stretchy fabrics
Elasticity: 8–10% stretch under 500g load, with 98% recovery after 1,000+ stretches
Abrasion Resistance: 50,000+ cycles (Martindale test), ensuring long-term durability in high-wear areas
Breaking Strength: 3.5–4.8 cN/dtex (resistant to tearing during stretching and wear)
Moisture Wicking: Rate of 0.3 g/min (quickly draws sweat away from the skin)
Certifications: OEKO-TEX® Standard 100, Bluesign®
Dynamic Fit: 360° stretch adapts to body movements (bending, stretching, squatting) without sagging, making it ideal for form-fitting garments like leggings and activewear.
Moisture Management: Polyester DTY outer layer features a hydrophilic finish that wicks sweat away from the skin, while the breathable structure accelerates evaporation to keep wearers dry.
UV Protection: UPF 50+ rating blocks 98% of harmful UV rays, making it suitable for outdoor activewear like running shorts and cycling jerseys.
Sustainable Production: Bluesign® certification ensures minimal environmental impact, with reduced chemical usage and energy-efficient manufacturing processes.
Activewear: Yoga pants, high-waisted running shorts, and compression tops that require stretch, support, and moisture management during workouts.
Intimates: Bras, panties, and shapewear requiring supportive stretch that retains shape and comfort throughout the day.
Medical Textiles: Graduated compression stockings (15–20 mmHg) and orthopedic braces that provide controlled pressure and flexibility.
Q: How does the spandex core resist degradation?
A: The polyester outer layer acts as a barrier, shielding spandex from UV rays, chlorine, and sweat—common causes of spandex breakdown—extending its lifespan by 50% vs. uncovered spandex.
Q: What needle size is recommended?
A: Use 28–32 gauge needles for optimal stitch definition; adjust tension settings to accommodate elasticity and prevent tightness.
Q: Is it suitable for swimwear?
A: Yes. Its chlorine resistance and quick-drying properties make it ideal for swim leggings and rash guards, maintaining stretch after repeated exposure to water.
