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Continuous Filament Nylon66


Doeast DONGYI is a Continuous Filament Nylon66 made from pre-stablised continuous filament nylon 6.6. It is an excellent sewing thread for all types of fabrics including leather and offers excellent abrasion resistance. It incorporates a soft finish with a superior low friction lubrication which reduces the effects of needle heat and abrasion.

Main Uses

  • Sportswear
  • Multineedle quilting
  • Weskit
  • Underwear
  • Lingerie
  • Leather


  • Excellent tenacity and strength
  • Excellent loop formation ,consistent stitch formation
  • Special lubrication technology to reduce abrasion
  • Recoverable elastic can provide better seam elongation
  • Certified to Oeko-tex standard 100, the most stringent class covering babywear.

Physical and chemical properities

Thermal Properties

  • Melts at 260℃ , softens at 190℃
  • 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
  • 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 3-4
Light Fastness ISO 105 B02 Grade 3-4