Loop Length
The length of yarn within a single loop (measured in millimeters). This parameter not only determines the density of the knitted fabric but also exerts a significant influence on its unraveling resistance, extensibility, abrasion resistance, elasticity, tensile strength, as well as its resistance to pilling and snagging.
Density
The number of loops within a unit length or unit area of a knitted fabric. It reflects the relative compactness or openness of the fabric given a specific yarn thickness. Density is typically expressed in terms of course density, wale density, and total density. Course density refers to the number of loops within a specified length (e.g., 50 mm) measured along the horizontal rows of loops in the fabric. Wale density refers to the number of loops within a specified length measured along the vertical columns of loops. Total density refers to the total number of loops within a specified area (e.g., 25 cm²). The ratio of the fabric's course density to its wale density is known as the density ratio coefficient.
Packing Factor
The ratio of the loop length to the yarn diameter. It illustrates the influence of yarn thickness on the relative compactness or openness of the knitted fabric, assuming a constant density. The higher the packing factor, the looser or more open the knitted fabric will be.
Weight per Unit Area
The weight (in grams) of one square meter of dry knitted fabric. This value can be calculated based on the loop length, the fabric density, and the yarn count (or linear density).
