Semi-Dull, High Viscosity & Low Carboxyl PET Chips (Specialized for Non-Wovens)

Our specialized Semi-Dull, High Viscosity, and Low Carboxyl PET Chips are engineered specifically for the demanding requirements of the high-performance non-woven industry. Designed for Spunbond, Meltblown, and Needle-punched processes, these chips provide the critical foundation for fibers that require exceptional mechanical strength and long-term environmental stability.

By precisely controlling the polymerization process, we have developed a resin that excels in high-speed spinning environments while offering superior resistance to aging and hydrolysis, making it the premier choice for industrial-grade non-woven applications.

Core Technical Advantages

1. Enhanced High Intrinsic Viscosity (IV)

  • The Advantage: Maintained at a strictly controlled high IV level, 0.72 dl/g or higher IV through the SSP process.

  • The Benefit: High molecular weight directly translates into superior tensile strength and tenacity in the finished fibers. This allows for the production of lightweight non-woven fabrics that maintain high tear resistance and structural integrity under heavy loads.

2. Advanced Low Carboxyl End Group (CEG) Technology

  • The Advantage: Our proprietary process limits the Carboxyl content to around 20 mol/t.

  • The Benefit: Carboxyl groups act as catalysts for degradation. By minimizing these groups, our chips offer exceptional anti-hydrolysis performance. Finished products remain durable even when exposed to high temperatures and high humidity, significantly extending their service life.

SPECIFICATION TABLE

Property Unit Standards Test Result
Intrinsic Viscosity dl/g 0.720±0.010 0.721
Melting Point ℃ 260±2.0 259.5
Color Value b 4.0±2.0 3.4
L ≥82.0 87.0
Carboxy End Groups mol/t 20.0±3.0 20.4
Moisture Content %w/w ≤0.40 0.01
DEG Content %w/w 1.10±0.15 1.21
Ash Content mg/kg ≤500 141
Iron Content mg/kg ≤2.0 <0.5
Chip Weight g/100pcs 3.00±0.20 3.00
Powder Content mg/kg ≤80 <50
TiO2 Content %w/w 0.28±0.03 0.30

Key Application Areas

  • Automotive Industry: Used for interior linings, trunk floor mats, and sound insulation materials where high durability and low volatility are required.

  • Geotextiles: High-strength non-wovens for road construction, drainage systems, and soil stabilization, benefiting from the anti-hydrolysis properties.

  • Filtration Media: Specialized for high-temperature liquid and gas filtration where chemical stability is paramount.

  • Medical & Hygiene: High-tenacity base materials for protective clothing and surgical drapes requiring soft-touch aesthetics and reliable strength.