Today to take advantage of the color in the various aspects, such as using fabric dye. Using food color Screen colors-coated fabric objects, including bringing food, these colors mixed with synthetic chemical reactions, usually by chemical reactions, synthetic colors, it generally has high costs make it expensive and there may be a chemical that is harmful to humans as well. Synthesis of color from the chemical reactions necessary to use large quantities of chemicals, and to provide sufficient demand for human consumption. In particular, industrial production, such as the colors used on the shirt. Production of appliances, using colors to enhance the beauty, but also the subsequent consequences. From these problems with studies, extracted from natural color concept to reduce the use of chemicals. By selecting the colors extracted from flowers or fruits in different colors like hibiscus flower stem bark anchan, etc.From the studies that have been extracted from color screen to bring anchan fabrics. From the project to extract colors from fabric screen printing ink of an eye that Suez (anchan. Pho Chai la 3: 2553 (2010)) select Extract color from the flower, plant, because it is a anchan blue quite blue upholstery, , crossed as screened brings popular colors and easy-to-grow plant is lueaythi wood anchan in Thai. She has also decided to bring me to a property Indicator Yi color come then it can be changed. Subject to change as the condition of acid-base, which can be related to a variety of fabrics, colors, printing inks will not tolerate more heat. It is easy to wash with water and a simple graphic. But natural color extraction not only of only anchan A study found that using the Roselle which wire is red and Red is the color that fairly; There is a clear Red and Roselle plant is easy to grow and easy to find. Do not use chemicals to get rid of the pest plant is semi tropical or hot climate with Thai. Can grow well in all soil types. It is for this reason that I chose hibiscus to extract color ink printing and use the appropriate reasons 5 properties to do the screen printing ink using the screen printing on cotton fabric, because there is a mixture of ink and printing process.
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