2007

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Faults and remedies associated with bleach wash on denim
(UMT.Lahore, 2007) M.Khurram Khan Niazi; Muhammad Zahid
Bleach is a very commonly applied wash on denim garments, due to its demand in the market, but there are a lot of faults and problems related to the quality which areassociated with this wash.We ellaborate some of the most famous and popular faults of this wash in our project and suggested remedies for these faults after carefull observation and experimentation. This project was divided in to three main categories.First of all we have studied the impact of bleach wash on the strength of the fabric. This objective was achieved by collecting the finished but unwashed sample of denim same quality of denim fabric was acquired. Then these samples were washed with both Sodium Hypochlorite an Calcium Hypochlorite. In order to made proper comparison, the grab test "ASTM DS-4049" was performed on these samples and the readings of the test was recorded. The other dimension of this project was to analyze the yellowing and backstaining faults. Then the industrially popular remedies for this fault was searched or determined, and finally test for these remedies were made and after conforming that tests with proper experimentation and analysis a precise remedy for these faults were proposed.