Smms non woven

SMMS (Spunbond + Meltblown + Meltblown + Spunbond) is a four-layer laminate. You must prioritize the GSM (Grams per Square Meter), typically ranging from 10gsm to 70gsm. For medical use, ensure the Hydrostatic Pressure resistance is high (measured in cm H2O) and the Bacterial Filtration Efficiency (BFE) meets industry standards. Additionally, verify the tensile strength in both Machine Direction (MD) and Cross Direction (CD) to ensure durability during conversion.

For medical applications like surgical gowns or drapes, the fabric must comply with EN 13795 (European standard) or AAMI PB70 (US standard, Levels 1-4). If used for hygiene products like diapers, ensure the material is OEKO-TEX Standard 100 certified to guarantee it is free from harmful substances. Always request ISO 13485 certification from the manufacturer to ensure their quality management system meets medical device requirements.

The two internal Meltblown layers act as the primary filter barrier. Compared to SMS, the double-Meltblown (MM) structure in SMMS provides a more uniform fiber distribution, significantly enhancing the barrier properties against fluids, bacteria, and fine particles without sacrificing breathability. This makes it the preferred choice for high-risk surgical environments and premium hygiene products.

Depending on the end-use, you can request specialized treatments such as Anti-static (AS), Alcohol Repellency (AR), Blood Repellency, and Oil Repellency. For outdoor or industrial use, UV stabilizers can be added. For medical gowns, a tri-proof treatment (water, blood, and alcohol resistance) is often a critical requirement for safety compliance.

Always request a Pre-Shipment Inspection (PSI) by a third-party agency like SGS or Intertek. Specifically, ask for a 'Spray Impact Test' and 'Hydrostatic Head Test' on samples from the actual production lot. Utilize Made-in-China.com's Secured Trading services to ensure that payment is only released after the goods pass the agreed-upon quality benchmarks.

SMMS rolls are bulky and susceptible to moisture and pressure deformation. Ensure the supplier uses heavy-duty PE film wrapping and cardboard end-caps to protect the roll edges. Specify the maximum roll diameter to fit your local converting machinery and request container loading optimization to minimize 'dead space,' which can significantly reduce your landed cost per ton.

Pricing for SMMS is highly sensitive to Polypropylene (PP) resin market prices. Negotiate a formula-based pricing model for long-term contracts. For MOQs, while standard white/blue fabric may have lower requirements, custom colors or specific functional treatments usually require a minimum of 1 to 3 tons per specification. Ask for volume-tiered discounts, as production efficiency increases significantly with longer continuous runs.

Check for Anti-dumping duties that your specific country may impose on non-woven imports from certain regions. Ensure the HS Code (typically 5603) is correctly declared to avoid customs delays. For medical-grade SMMS, ensure the supplier provides a Certificate of Free Sale (CFS) and Declaration of Conformity (DoC) to facilitate smooth customs clearance in the destination country.