2. experimental methodExtract colors from step 2.1 guava with solvent (distilled water).2.1.1 use dried hibiscus with red until a powder from the mass to raise 100 g RA chick. Milling with solvent, quarter with total volume 600 ml 95 degree Celsius temperature. Then with some white cloth and repeat again as the number 3 times.2.1.2 release color extraction to detect the wavelength, and the ability to absorb light with a Visible Ultraviolet Spectrometer. 2.2 mixed ink screen printing process from the extraction of color.2.2.1 preparation, the ingredients in the ink contains four main components are.2.2.1.1 colors are the colors of the extract by using step 1.2.2.1.2 the bonding material used on printing. Use a type of Thickener used in industrial Sodium Alginate is.2.2.1.3 solvent for substances in this case refers to the use of distilled water.2.2.1.4 additives to maintain the balance of the printing inks:Urea – Moisture, helps the flow of ink while printing sodium bicarbonate – ink as a base condition.2.2.2 appropriate experimental recipes of ingredients by weight percentage, divide the mixture into two major Stock paste & paste Print.
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