ACY vs. SCY: Key Differences in Textile Manufacturing

At CITIC Nanyang , we specialize in high-quality polyester products, including Air-Covered Yarn (ACY) and Spandex-Covered Yarn (SCY) . Understanding their differences helps in choosing the right yarn for textile applications.

Production Process

• ACY: Spandex is covered with polyester or nylon using compressed air, creating a smooth and uniform appearance.

• SCY: Spandex is mechanically twisted with filament yarn, resulting in a firmer structure and enhanced elasticity.

Key Differences

1. Elasticity & Stretch

• ACY: Moderate elasticity, ideal for comfort.

• SCY: Higher elasticity and better recovery.

2. Appearance & Texture

• ACY: Smoother and softer.

• SCY: Textured and firmer.

3. Dyeing & Colorfastness

• ACY: Easier to dye, vibrant colors.

• SCY: More compact, retains color well.

4. Applications

• ACY: Hosiery, seamless wear, activewear.

• SCY: Denim, socks, shapewear.

5. Cost Efficiency

• ACY: More cost-effective, faster production.

• SCY: Pricier but offers greater durability.

Choosing the Right Yarn

• For lightweight comfort → Choose ACY

• For high elasticity & durability → Choose SCY

At CITIC Nanyang , we provide premium-quality yarns tailored to your needs. Contact us for expert guidance on selecting the best yarn for your applications.