Browsing by Author "Muhammad Anwar-UI-Haq"

Now showing 1 - 1 of 1
  • Thumbnail Image
    Item
    Faults in pretreatments & dyeing at amtex
    (UMT.Lahore, 2001) Muhammad Anwar-UI-Haq
    This final project is on the Amtex (Pvt.) Ltd. It is a woven fabric dyeing and printing unit. They have a good reputation as woven (dyed and printed) fabric exporters. Their main exports are to the Middle East and European Countries. The company is ISO 14001 certified and there is concept of quality products. In this project I have analyzed their production procedures, types of machinery used and quality checks in various departments. The departments which are working in Amtex are production, dyeing and finishing, administration and purchasing. I have worked on prelreatment process such as Singeing, Desizing, Scouring, Bleaching and Mercerizing. Main faults which I have observed in singeing are incomplete singeing and bead formations which occur due to unavailability of flame height meter on machine. Desizing is the process in which we remove the sizing material from the fabric. The main desizuig fault was the length wise variations in absorbency. This fault occurs due to not maintaining of PH according to standards during the process. Scouring is the process in which we remove fabric impurities, the main fault which I observed was the Iron Stains, which is a machine fault. In Bleaching we remove the natural colour of textile material, the main fault in the process was low degree of whiteness. It occurs due to not following the bleaching condition properly such as temperature, concentration and time. The next process is Mercerizing in which we increase the dye uptake of fabric, the main fault was low degree of mercerization. This fault occurs due to not checking the strength of caustic after hall' an hour. These were my findings about main faults and 1 hope by the recommendations I have given, they will be able to improve their production capability and product quality as well