Understanding GSM in Spunbond Non-woven Fabrics: A Selection Guide

The Significance of Basis Weight (GSM)

In technical textiles, basis weight is measured in Grams per Square Meter (GSM or g/m²). For Spunbond non-woven fabrics, GSM is the primary specification determining: * The thickness, density, and opacity of the fabric * Machine Direction (MD) and Cross Direction (CD) tensile breaking force * Tear resistance and burst strength * Unit roll yield (linear meters per kilogram of fabric)

Typical GSM Ranges & Applications:

• **10 – 20 GSM (Lightweight Hygiene & Medical):** Engineered for disposable surgical caps, shoe covers, diaper topsheets, and hygiene wrappers. Focuses on ultra-lightweight softness and breathability.
• **25 – 45 GSM (Medium Apparel & Medical):** Utilized for hospital patient gowns, disposable bedsheets, pillow covers, and cleanroom visitors' apparel.
• **50 – 70 GSM (Durable Packaging & Protective):** The benchmark specification for reusable non-woven shopping bags, garment covers, protective coveralls, and furniture dust covers.
• **75 – 120+ GSM (Heavy Technical & Agriculture):** Applied in heavy-duty agricultural frost covers, mattress quilting backing, pocket spring wrapping, and industrial filtration support.