Classification of Polyester DTY Yarn

Classification of Polyester

1. Classification by Intermingling / Texturing Type (Most Common)

• DTY (Draw Textured Yarn):​ The standard low-elastic yarn, offering moderate bulkiness and low elongation properties.
• DTY + Network (Intermingled Yarn):​ Characterized by network points along the yarn that provide excellent cohesion, preventing fraying during weaving. Commonly categorized as:
  • NIM (Normal Intermingled):​ Light intermingling with fewer nodes.
  • SIM (Semi-Intermingled):​ Medium intermingling.
  • HIM (High Intermingled):​ Heavy intermingling with frequent nodes, often used as a substitute for twisting.

2. Classification by Cross-Sectional Shape

• Round DTY:​ The most common type, featuring a smooth surface.
• Trilobal DTY:​ Trilobal cross-section providing a bright luster and slightly firmer hand feel. Often used for reflective or decorative webbing.
• Cationic DTY (CD Yarn):​ Partially modified for cationic dyeing. Allows for two-tone color effects (bi-color dyeing).

3. Classification by Function / Finish (Relevant to UV Resistance)

• Regular DTY:​ Standard yarn without UV protection.
• UV-Stabilized DTY:​ Formulated with UV stabilizer masterbatch; the preferred choice for outdoor webbing​ to prevent degradation and fading.
• Flame Retardant (FR) DTY:​ Engineered to resist ignition.
• Anti-Static DTY:​ Treated to reduce static build-up.
• Recycled DTY (rPET DTY):​ Made from recycled polyester, commonly used in products requiring GRS (Global Recycled Standard) certification.

4. Classification by Luster

• Semi-Dull DTY:​ The most versatile option; widely used for general outdoor webbing.
• Full-Dull DTY:​ Non-reflective (matte finish), offering a premium, “sun-protective” aesthetic.
• Bright DTY:​ High-gloss finish, typically used for decorative webbing on bags and apparel.

5. Classification by Linear Density (Denier)

• Common Specs:​ 75D/72F, 100D/96F, 150D/144F, 300D/576F, etc.
  • Denier (D): Lower numbers indicate finer yarn thickness.
  • Filaments (F): Higher numbers indicate softer, finer yarn.
• Industry Usage:
  • 150D & 300D DTY:​ Standard for medium-to-heavy duty webbing.
  • 75D DTY:​ Used for lightweight, narrow webbing.

6. Classification by Twist Direction

• S Twist / Z Twist:​ The direction of the twist, which determines the diagonal pattern (twill direction) of the woven webbing.
• Non-Twist DTY:​ Zero twist, typically used for flat, non-twill webbing.

• Classification of Polyester