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When sourcing TNT fabric, the most critical specification is the Grammage (GSM), which typically ranges from 9g/sm to 150g/sm depending on the application. For medical use, prioritize SS, SSS, or SMS (Spunbond-Meltblown-Spunbond) structures to ensure superior filtration and fluid resistance. Additionally, verify the tensile strength (both longitudinal and transverse) and elongation rate to ensure the fabric can withstand mechanical stress during conversion processes.
Compliance depends on the end-use. For medical applications (masks, gowns), products must meet EN 13795 (EU) or AAMI PB70 (US) standards. For general packaging or upholstery, ensure the fabric is OEKO-TEX® Standard 100 certified to guarantee it is free from harmful substances. If the fabric is intended for the European market, REACH compliance is essential to ensure chemical safety.
Request technical data sheets (TDS) that specify functional additives. Common treatments include Anti-UV (1%-5%) for agricultural use, Hydrophilic treatment for hygiene products (diapers), and Anti-static or Flame Retardant (BS5852 standard) for furniture and construction. Always request a swatch sample to test the 'hand-feel' and perform a simple water-repellency or absorption test based on your specific requirements.
The price of TNT fabric is highly sensitive to the Polypropylene (PP) resin market price. To optimize costs, consider Full Container Load (FCL) shipping, as TNT is lightweight but high-volume, making LCL shipping disproportionately expensive due to 'dim weight' charges. Negotiate based on annual volume commitments rather than one-off orders to secure a 5-10% discount from top-tier manufacturers on Made-in-China.com.
The main risk is material substitution, where a supplier might mix recycled PP with virgin PP, reducing strength and color consistency. To mitigate this, specify 100% Virgin PP in the Proforma Invoice (PI) and mandate a Pre-shipment Inspection (PSI) by third parties like SGS or Intertek to verify GSM accuracy and roll length.
TNT rolls are susceptible to moisture and pressure deformation. Insist that rolls are wrapped in heavy-duty PE film and labeled with clear batch numbers. For sea freight, negotiate FOB terms to maintain control over the forwarder, and ensure the container is inspected for leaks to prevent mildew contamination during long voyages.
Utilize Secured Trading Services provided by Made-in-China.com to ensure payment is only released upon confirmation of shipment. For first-time orders exceeding $50,000, consider using a Letter of Credit (L/C at sight) to protect against non-delivery and ensure all shipping documents strictly match the contract requirements.
