What are the knitted fabric testing items?

Knitted fabrics are usually tested for the following items.

Physical Property: density, yarn count, gram weight, yarn twist, yarn strength, fabric structure, fabric thickness, loop length, fabric coverage factor, fabric shrinkage or weaving shrinkage, curved and slanted deformation, tensile strength, tear strength, seam slip, seam strength, bond strength, single yarn strength, yarn strength per unit of linear density, anti-hook wire, crease recovery angle test the strength of the yarn, the stiffness test, the water repellency test, the leak resistance, the elasticity and the recovery strength, the air permeability, the water vapor permeability, the general garment combustibility, the children's evening wear combustibility, the bursting strength, the abrasion resistance test, the pilling resistance, etc.

Color fastness (Colorfastness): color fastness to soaping (small sample), color fastness to rubbing, color fastness to chlorine water, color fastness to non-chlorine bleaching, color fastness to dry cleaning, color fastness to actual washing (garment, fabric), color fastness to perspiration, color fastness to water, color fastness to light, color fastness to seawater, color fastness to saliva.

Dimensional Stability: machine wash dimensional stability, hand wash dimensional stability, dry cleaning dimensional stability, steam dimensional stability.

Apperance After Wash: machine wash appearance stability, hand wash appearance stability, dry cleaning appearance stability.

Chemical Analysis: PH content, formaldehyde content, lead content, azo dye test, heavy metal content test, water absorption, moisture content, odor, cotton mercerization effect, hot press, dry heat, storage sublimation, acid spot, alkali spot, water spot, phenolic yellowing, etc.

Fiber Content Analysis: Cotton, linen, wool (sheep, rabbit), silk, polyester, viscose, spandex, nylon, lint content, etc.