Cotton sliver barrel manufacturers explain how to detect textiles
The products made of textile fibers through processing and weaving are called textiles.? Broadly speaking, textiles from spinning - weaving - finished products. In daily use, textiles can be used not only as writers' textiles and decorative cloth products, but also as clothing, which is closer to people's skin, so its quality has always been the focus of attention. Today, the cotton sliver barrel manufacturer will tell you how to test the quality of textiles.
Chemical composition analysis: pH content, formaldehyde content, lead content, azo dye test, heavy metal content test, water absorption, moisture content, peculiar smell, mercerization effect of cotton, hot pressing, dry heat, storage sublimation, acid spot, alkali spot, water spot, phenolic yellowing, etc
Banned azo dye test: it is an important quality monitoring project in international textile and garment trade, and it is also one of the basic quality indicators of ecological textiles. It is mainly analyzed and tested by gas chromatograph. Azo dye test is divided into three methods: textiles (except polyester and leather textiles), polyester (polyester) and leather (leather), so the composition of the product must be provided when doing azo test.

Formaldehyde test: extract free formaldehyde or released formaldehyde from a certain amount of fabric in a certain way, and then calculate the formaldehyde content through colorimetric test. The specific test shall be carried out according to the customer's requirements. The crease resistance of textile products can be improved by resin finishing. This resin finishing agent is directly synthesized from formaldehyde. Therefore, a certain amount of formaldehyde will remain in the fabric after these resin finishing. The crosslinking agent in pigment printing paste and the color fixing agent used after dyeing with direct dyes and reactive dyes will leave a certain amount of formaldehyde on clothing materials. Formaldehyde is not allowed to be detected in infant clothing.
Dimensional stability: dimensional stability of washing machine, hand washing, dry cleaning and steam
Appearance durability: water washing machine washing appearance stability, hand washing appearance stability and dry cleaning appearance stability
Composition analysis: cotton, hemp, wool (sheep, rabbit), silk, polyester, viscose, spandex, nylon, cashmere content, etc. Fiber composition analysis: first conduct qualitative analysis on the fiber of the fabric. There are many kinds of qualitative analysis, including combustion method, melting point method, hand feeling visual measurement method, microscope slice analysis method, etc. generally, the microscope slice analysis method is adopted, that is, the fiber is sliced with a slicer and observed under the microscope, the fiber type is judged according to its appearance, and then used according to different fibers
Qualitative analysis of different solvents to calculate the specific component content.