Woolen sweater is spring, autumn and winter are welcomed by consumers of clothing, but many counterfeit and shoddy goods, some in the wool mixed with acrylic, polypropylene and other chemical fibers, some use chemical fiber fabric as wool, so when buying should pay attention to identify its true and false, to prevent the wrong purchase.
See the logo
If pure wool, there should be five items of pure wool logo; If blended products, there should be wool content mark; Otherwise, it can be regarded as a fake.
To check quality
Real woolen sweater is soft, elastic, feels good and keeps warm. The quality of a material of false woolen sweater, flexibility, feel, keep warm sex poorer.
True wool contains a lot of protein, smoke a few fiber to ignite from unlined upper garment, smell odour, see ash, if have the odour of burnt feather, ash is broken namely with finger, it is pure wool; If there is no smell of burnt feathers, ash pressure does not break, agglomerate, it is chemical fiber fabric.
Friction electrostatic test
Rub the clothes for inspection on the cotton shirt for about 5 minutes, and then quickly pull off each other. If have "patter" sound, contain static electricity spark even, it is chemical fiber fabric, it is false wool sweater.