Essay --

Humans have known how to use the color from plant, animal and mineral around them and utilized in everyday since antiquity. We can see image on the walls caves, they known how to use to decorate container or jewelry body of tribes various. When human prosperous, they known how to use apparel and can use color from natural tinted or decorate for beauty increase Colors derived from plants such as blue from indigo. Red from Sappan core or orange color from annatto seed, color from animals such as red color from lac. Which is still used today (hongthongdang and Srimakajorn, 2006). The popularity on natural dyes are decreased when they have the chemical synthesis because of the chemicals dyes is easy to use, convenient, highly stable, The quantity and type of colors more sufficient for increasing demand in the production of industrial. but at present we found that the chemical dyes some kinds have carcinogen that harmful to affect the dyer, user and environment. Until some countries discourage fabrics dyed with chemical colors and they will popularity turn to natural colors increase. Most farmers like to dye silk from chemical color or synthesis because the color is fresh color, cheap, convenient and fast and decolorization Dyeing silk a very important role because it can add beauty to silk to use more. at the present, consumers have begun to focus on the use of natural materials is the factors in living. Including silk's consumer both Thailand and overseas is turn to like using fabric dye from natural more. Because the color from natural a light color more than chemical color and does not cause irritation to the skin. It also using a local diversity materials are useful and do not cause pollution to the environment. However, farmer... ...% to 5.5%. The feature extraction process does not properties the loss of natural dye type. However normally usually powder color to be dispersed. The user may be inhaled into the body and the resulting harm. So to keep the dye color is used to compress the powder into a pigment. Which can be easily used. Not be dispersed. Storage facilities just keep in opaque plastic bags or amber bottles in this way, it is keep materials of natural scarce is used to dye natural color all year round In this research, we have make developed a powder colors of natural materials has a variety of colors, consistency of color and stable decolorizing. Farmers can use throughout the year, convenient and simple. To replace the use of chemical colors or synthetic dyes. Reduced the purchases of foreign coloring, added value of the product, unique of silk and respond requirement of consumers