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Continuous Filament Polyester


Doeast XIARONG is a Continuous Filament Polyester with high tenacity. It is highly resistant to abrasion, visible sunlight and mild acids. It has excellent loop forming properties which ensure superior sewing performance.

Its fineness coupled with its strength makes it ideal for blind stitching, hemming or serging in fine fabrics as well as in general sewing operations on fine woven fabrics such as jacket linings.

Main Uses

  • Lingerie
  • Shirts & blouses
  • Quilting
  • Leather


  • Prorietary lubrication technology
  • High tenacity
  • Wide range of colours and sizes
  • Balanced twist levels and unique stabilising process
  • Certified to Oeko-tex standard 100, the most stringent class covering babywear.

Physical and chemical properities

Thermal Properties

  • Melts at 250--260℃ , softens at 220--240℃
  • Shrinkage less than 1% at 150℃

Chemical Properties

  • Mineral acids: Resistant to most mineral acids
  • Alkalis: Essentially unaffected by weak alkalis,but less resistant to stronger alkalis,especially at higher temperatures.
  • Oranic solvents : Generally unaffcted ,but soluble in some phenolic compounds.
  • Insects / microorganisms: unaffacted
  • Laundering / dry cleaning: unaffacted
  • Moisture regain: 0.4%

fastness properties

Fastness ISO Grade
Wash Fastness ISO 105 C03 Grade 4
Water Fastness ISO 105 E01 Grade 4
Rub Fastness ISO 105 X12 Grade 4
Hypochlorite Fastness ISO 105 N01 Grade 4
Dry cleaning Fastness ISO 105 D01 Grade 4
Perspiration Fastness ISO 105 E04 Grade 4
Light Fastness ISO 105 B02 Grade 4