How to identify silk and silk fabric

1 No.: No. 5 by the Arabic numerals, the five digits from left to right the first digit, all silk fabrics (including silk, silk) for the "1".

2 price: the price of all silk fabric is about chemical fiber, imitation silk satin about twice.

3 appearance: the appearance of silk fabric glossy and elegant, like the pearls of the luster; feel soft and smooth, flexible, easy to wrinkle; imitation silk appearance of the color is not as soft as silk, more harsh, feel crisp, easy to fold, The status quo.

4 silk fiber fire will slowly burn, shrink into a ball, burning hair burning hair when the smell, there is no fire, after burning will form a fragile dark brown particles; imitation silk fabric fire will have flames, burning edge will have Hard plastic blocks.