Polyester tyre cord fabric

Buyers must focus on Breaking Strength (Tenacity), Elongation at Break, and Adhesion Strength. For high-performance tires, a tenacity of ≥7.5 cN/dtex is standard. Additionally, verify the Linear Density (Denier/Dtex), such as 1000D/2 or 1500D/2, and ensure the Hot Air Shrinkage is controlled within ≤4% at 177°C to maintain dimensional stability during the vulcanization process.

Suppliers should ideally hold ISO 9001 for quality management and IATF 16949 for automotive industry supply chain compliance. Depending on the target market, ensure the product meets ASTM D885 standards for testing tire cords. For environmental compliance, verify that the dipping chemicals (RFL - Resorcinol Formaldehyde Latex) comply with REACH or RoHS regulations if exporting to the EU.

The RFL Dipping process is critical because polyester is naturally hydrophobic and does not bond well with rubber. You must confirm the Dip Pick-Up (DPU) percentage, typically ranging from 4% to 6%. A high-quality dip ensures superior interfacial adhesion, preventing tread separation and extending the tire's lifespan under high-speed and high-load conditions.

Polyester cord is primarily used as a carcass material for radial tires in passenger cars due to its high modulus and low creep. It is also widely used in conveyor belts, hoses, and V-belts. For heavy-duty truck tires, it is often used in combination with steel cords to provide a balance of flexibility and structural reinforcement.

The biggest risk is moisture damage during sea transit, which can degrade the RFL coating and reduce adhesion. Ensure the supplier uses vacuum-sealed moisture-proof packaging and includes desiccants in the containers. Always request a Pre-Shipment Inspection (PSI) to verify the batch's physical properties before the final payment is released.

Pricing for polyester is heavily influenced by raw material (PTA and MEG) market fluctuations. It is advisable to negotiate a formula-based pricing model linked to global chemical indices for long-term contracts. For MOQs, while large factories prefer 5-10 ton minimums, you can negotiate smaller trial orders by sourcing through Verified Suppliers on Made-in-China.com who maintain ready-to-ship stock.

Tyre cord fabric is heavy and bulky, usually shipped in large rolls (1,000m to 3,000m). Ensure the supplier uses reinforced wooden pallets or steel frames to prevent roll deformation. Use FOB (Free On Board) terms to maintain control over the freight forwarder, ensuring they have experience handling industrial rolls to avoid crushing during loading.

Utilize Secured Trading Services provided by platforms like Made-in-China.com to protect your payment until delivery is confirmed. Conduct a factory audit (either in-person or via a third-party like SGS/TÜV) to verify the supplier's production capacity and ensure they are not a middleman with no quality control over the dipping process.