Knitted fabric inspection problems

Knitted fabrics are usually tested for physical properties: density, yarn count, gram weight, yarn twist, yarn strength, fabric structure, fabric thickness, loop length, fabric coverage factor, fabric shrinkage or weaving Shrinkage rate, flexural deformation, tensile strength, tearing strength, seam slip, seam strength, bonding strength, single yarn strength, yarn strength per unit density, anti-hook, crease recovery angle test, Stiffness test, water repellency test, leak resistance, elasticity and resilience, air permeability, water vapor permeability, general clothing flammability, children's evening wear flammability, burst strength, abrasion resistance test, pilling resistance, etc. Colorfastness: Colorfastness to soaping (sample), colorfastness to rubbing, colorfastness to chlorine water, colorfastness to non-chlorine bleaching, colorfastness to dry cleaning, colorfastness to actual washing (clothing, Fabric), color fastness to perspiration, color fastness to water, color fastness to light, color fastness to seawater, color fastness to saliva Dimensional Stability: dimensional stability in machine washing, dimensional stability by hand Dry cleaning Dimensional Stability, Steam Dimensional Stability Appearance After Wash: Appearance Stability in Machine Washing, Hand Stability, Dry Stability in Dry Cleaning Appearance Chemical Analysis: PH content, formaldehyde content, lead content , Azo dye test, heavy metal content test, water absorption, moisture content, odor, mercerizing effect of cotton, hot pressing, dry heat, storage sublimation, acid spot, alkali spot, water spot, phenolic yellowing and other component analysis (Fiber Content Analysis): Cotton, linen, wool (sheep, rabbit), silk, polyester, viscose, spandex, nylon, wool content, etc.