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Page 88 - Shawl Weaving Artisan - TP
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    Textile & Handloom                                                               Exercise 1.6.51
           Shawl Weaving Artisan - Wet Processing

           Scouring process on wool

           Objectives : At the end of this exercise you shall be able to
           •  scour the wool yarn.

             Requirements

              Tools/equipment’s/Instruments
             •   Gas stove                       - 1 No.        •  Lab thermometer                    - 1 No.
             •  Stain less steel beaker          - 1 No.        •  Glass /metal stirring rods         - 1 No.
             •  Soda ash                         - as reqd.     Materials
             •  Acetic acid                      - as reqd.     •  Wool yarn hanks                   - as reqd.
             •  Washing and soaping agent        - as reqd.

           PROCEDURE

           TASK 1: Scouring on wool yarn
           1  Take a wool yarn hank and soak it with water.     6  Put the wool yarn hank in the soda ash and detergent
           2  Then pour water into the beaker. (The water should   solution. Make sure the yarn is fully covered by the
                                                                   solution. (Fig 3)
              be enough so that the entire sample is dipped into it).
           3  Then place the beaker on gas stove and turn on the   Fig 3
              gas.

           4  Mix 2-3% of soda ash (by weight of the wool yarn) in
              it and stir until the soda ash is fully dissolved. (Fig 1)

            Fig 1

                                                                7  Keep the temperature low  40°C to 50°C during the
                                                                   process, the temperature doesn’t exceed to 60°C .
           5  Now add a small amount of mild detergent soap in   8  Continue stir the hank with the help of rods for at
              the water and let the water get a little warm. (Fig 2)  least 5 -10 min. (Fig 4)

            Fig 2
                                                                 Fig 4

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