Cooking with gauze Kostiksoda a preparatory process before the fabric through further processing. With this process, part of the fiber constituent components of oil, wax, grease, dirt and soluble impurities attached to the fiber surface can be removed. If these components can be removed, then the next process such as pengelantangan, immersion and so can work well.
reactions that occur in the cooking process of cotton fabric dengna Kostiksoda / Sodium hydroxide is as follows:
laboratory test
tools and materials
- Gray cloth
- Water
- Caustic soda
- Tepol / wetting agent
- Sodium carbonate
- Scales
- Glass beaker
- Stick
- Measuring pipette
- Measuring cup
- Thermometer
- Tool Heaters
recipes
- Caustic soda 38'Be = 10 cc / liter, or
- NaOH crystal = 4 -5 grams / liter
- Wetting agent / tepol = 2 cc / liter
- Sodium carbonate (Na2CO3) = 1 gram / liter
- Temperature = 90
- Time = 1 - 2 hours
- Vlot = 1:30
substance function
- Caustic soda = turn fat into soap is soluble in water
- Na2CO3 = to soften the water
- Wetting agent = to memperkacil surface tension in the fabric
- Water = to dissolve substances
job step
1. prepare equipment and materials
2. fabric weighing
3. calculate the water needs and other substances in accordance with the prescribed
4. dissolve substances that have been calculated into the glass beaker
5. heating the solution to boiling for 2 hours and then put the cloth into the solution and stirred
6. took the cloth from the solution after processing for 2 hours
7. fabric drained and washed with hot water and washed again with cold water
8. after washing, the fabric is dried with direct sunlight
9. calculate weight fabric
In the provision of materials provided must be within their water needs because that is necessary for the stability of the fabric being processed.
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