Quality Control System
The Quality control department plays an important role in all types of manufacturing units. In textile; it has great importance. In knitting, the four-point system is used to measure the quality of the knit fabric. A quality assurance system consists of two types; they are-
- On line quality assurance system
- Offline quality assurance system

Off line Quality Assurance System:
This type of system consists of a quality measuring system when the production process is completed. Here, I have described the quality assurance system of the dyeing and finishing unit. All the Off-Line tests for finished fabrics can be grouped as follows:
- Physical tests
- Chemical tests
Physical Tests:
The following is the physical test in the offline quality control system. They are-
- Threads per inch
- Fabric weight
- Width test
- Tensile strength
- Tear strength
- Seam slippage
- Abrasion resistance
- Pilling resistance
- Thermal stability
- Crease resistance
- Stretchability & growth recovery
- Smoothness appearance
Chemical Tests:
The following is the chemical test in the offline quality control system. They are-
- Fastness to washing.
- Fastness to light
- Heat Fastness
- Fastness to actual laundering
- Fastness to seawater
- The Fastness of Chlorinated water
- Fastness to water spotting
- Fastness to perspiration
Equipment Used For Test:
Various types of machinery and equipment are used to measure quality testing. The following equipment is the main instrument for testing. However, All of the equipment is not manufactured by the same manufacturing companies. Various machine manufacturing companies are responsible to provide such types of equipment to the textile mill.
- Spectrophotometer with software (Data color)
- Martindale Abrasion Tester
- Day lightbox
- Sample dyeing machine (2)
- Iron
- Electric Balance
- Crock meter
- Data color
- Washing m/c
- GSM Tester
- PH meter
So, we should perform offline quality assurance with great care.
Xenon Test Chamber, to determine color fastness to light, weather and light aging of various colored textiles, Light and weather fastness tester. Light & Weather Fastness Tester complies with ISO105-B02/B04, AATCC 16-2003, GB/T 8427/8430, etc.