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Unformatted text preview: mercerized cotton (SBM) D. 1. Before coming to the lab calculate the amount of dye required to dye 77g of cotton at 1% owf. Also calculate the amount of sodium sulphate needed in the 1.8 L bath. 2. The first step is to place the multifiber rope in the JFL dyeing machine with 1.5 L of water. 3. Calbirate the JFL machine and run it. 4. After 5 min, the temperature of the bath needs to be recorded. Calculate the temperature every 5 min until it reaches 90 o C. 5. After it reaches 90 o C we add the salt, and we continue dying for 30 min. 6. Cool the bath to 80 o C and set the machine for a 50 o C rinse. 7. Empty the bath, remove fabric, and dry it in oven. 8. Evaluate the multifiber strips in the light box....
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- Spring '10