Polyester yarn dty fdy

DTY (Drawn Textured Yarn) is produced by twisting and drawing POY, resulting in a soft, crimped, and bulky texture with high elasticity, ideal for apparel and home textiles. FDY (Fully Drawn Yarn) is produced at high speeds to create a smooth, high-tenacity filament with low elongation, making it perfect for silky fabrics, ribbons, and industrial applications requiring high strength.

Buyers must focus on Tenacity (cN/dtex) to prevent breakage, Uster Evenness (U%) to ensure fabric uniformity, and Boiling Water Shrinkage (BWS) to maintain dimensional stability. For DTY, the Crimp Contraction and Oil Content (typically 1-3%) are critical for smooth processing on circular knitting machines.

The most critical certification is OEKO-TEX® Standard 100, which ensures the yarn is free from harmful substances. For sustainable sourcing, look for the Global Recycled Standard (GRS) if purchasing recycled polyester (rPET). Additionally, ensure the supplier complies with REACH regulations for the European market.

The Denier (D) represents the weight/thickness, while the Filament (F) count determines the hand-feel. A higher filament count (e.g., 75D/144F) results in a microfiber feel that is softer and more breathable, whereas a lower filament count (e.g., 75D/36F) provides a crisper, stiffer texture suitable for structured garments.

Always request a Lab Dip for approval before mass production. Ensure the contract specifies that the entire shipment must come from the same production batch to avoid 'striping' in finished fabrics. For large-scale procurement, utilizing Made-in-China.com's inspection services can verify color consistency against the master sample before the goods leave the factory.

Polyester prices are closely tied to Crude Oil and PTA/MEG costs. Negotiate a formula-based pricing model for long-term contracts or lock in prices during market lows. For bulk orders exceeding 20 tons (one FCL), aim for a 3-5% volume discount and request FOB pricing to maintain better control over your logistics costs.

Yarn cones are susceptible to moisture and physical deformation. Insist on neutral export cartons with plastic inner liners or palletized packaging with shrink wrap to prevent dampness. Ensure the supplier uses heavy-duty paper cones to prevent collapsing during stacking in the container, which can cause unwinding issues during production.

Use Secured Trading Services provided by Made-in-China.com to ensure payments are only released after the bill of lading is verified. Conduct a factory audit or request a video inspection to confirm the supplier's actual production capacity and specialized machinery (e.g., Barmag or TMT texturing machines) rather than relying solely on trading intermediaries.