The following is a practical method to judge the material of veil, combining sensory observation with professional testing skills:
A, sensory identification method
Visual observation
Glossy: Silk/Xiangyun yarn has a soft pearl luster, while chemical fiber chiffon has a strong reflection.
Texture features:
Obvious grid texture can be seen in organza.
Lace yarn has three-dimensional embroidery holes
The surface of Xiangyun yarn presents unique turtle cracks.
Tactile test
Kneading method:
When silk is rubbed, there is a sound of silk, while chemical fiber is silent.
Organza feels stiff and chiffon is soft and drooping.
Grasping test:
Cotton yarn tends to wrinkle, and diamond yarn rebounds quickly.
Second, the combustion test method (cut edge thread test)
Material combustion characteristics
Silk burns slowly, curls into dark brown brittle balls, and smells like burning hair.
Cotton/hemp burns rapidly, and the ash is grayish white, with the smell of burning paper.
Chemical fiber melts and drips, and it smells like plastic (polyester) or celery (acrylic).
Blending has two characteristics (for example, silk+polyester has both black balls and molten drops)
Third, professional identification skills
Light transmission test
The double-layer phantom yarn is opaque to people, and the single-layer chiffon is obvious in skin penetration.
Component detection
Soak with 84 disinfectant: silk will dissolve and chemical fiber will not react.
Water stain test
Xiangyun yarn darkens when exposed to water and returns to its original color after drying.
Fourth, the identification of special materials
Xiangyun yarn: the dyed surface of Dioscorea cirrhosa has herbal fragrance, and the surface of river mud is matte.
Pearl yarn: colorful halo when rotating.
Paper yarn: obvious fiber breaking sound when tearing.
It is suggested that the initial judgment should be made by sensory method, and then the uncertain materials should be verified by small-scale combustion/dissolution. Merchants can be required to provide fabric composition labels or test reports when purchasing.