The density of knitted fabric, quantified by its weight per unit area, is known as "Grams per Square Metre (GSM)." This metric indicates fabric weight, with higher GSM values signifying denser, heavier materials and lower values indicating lighter fabrics.
Explanation:
- Ends per Inch (EPI): Denotes the count of warp yarns within one inch of woven fabric, pertaining to construction, not weight.
- Picks per Inch (PPI): Similar to EPI, it measures the count of weft yarns within one inch of woven fabric, also relating to construction, not weight.
- Grams per Square Metre (GSM): Measures fabric weight across a defined area (a square meter), thus correctly representing fabric density by weight.
- Thread Count: Refers to the number of threads per inch in woven fabrics, generally indicating quality and fineness rather than weight.