Studies on the Changes of Twill and Denim Garments After Dyeing and Washing Process

Apple, Md. Ashikur Rahman; Mahmud, Md. Nadim

Studies on the Changes of Twill and Denim Garments After Dyeing and Washing Process

Apple, Md. Ashikur Rahman; Mahmud, Md. Nadim

URI: http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/5228

Date: 2019-12-10

Abstract:

Raw denim garments obtained after finishing is impossible to wear before dyeing and washing because of rigidity and stiffness of finished denim. Finished denim garments is also looking dull before dyeing and washing. Twill garments also looking dull and impossible to wear before dyeing and washing. So that the denim and twill garments have to wash properly for its great performance. Denim wash actually not chance garments physical property but also change aesthetic property of denim garments. This project is done for comparing the physical properties like rubbing fastness, weight, length wish shrinkage, width wise shrinkage, PH, tearing strength, tensile strength, gsm. We saw a twill garments for 4 pcs before wash this weightwas2.900kgandafterdifferentdyeingandwashingitgoesto3.100kg.Andgsmbeforewashwas 8.78 oz/yd2 and after wash it changes to 8.84 oz/yd2. This garments length wise shrinkage percentage after wash 2.70% and width wise shrinkage percentage 8.00%. PH need 6-8 but here PH was 6.78. Rubbing fastness for dry have 4-5 and wet have 3-4. And some body measurement change after garments dyeing and washing waist was before wash 31.5 and after wash 29.5.This all data collected from laboratory and quality control section of Standard Group Ltd. After comparing those changes of garments we can comments about reasons of change garments property. Enzyme, bleach, towel, stone, acid wash is the main reason for changing those property.

Description:

Garments washing and dyeing is most popular in the textile sector or industry. Impurities, dust, dirt and any harmful particles is removed by garments washing [11]. Different technique creates different requirements of style and fashionable products. Naturally denim wash is done after stitching garments. According to consumers need, and buyer ask to make wash. Physical changes is mainly depends on fabrics types [12]. Without denim present market is not profitable to any industry. Before denim dyeing and washing first have to do dry wash. Where firstly have to brush where p.p spray have to give, then pocket side have to grinding and end seam of pant have to grinding for smoothy garments. Destroy machine create a fashion on garments by laser to look fashionable [13]. Inseam of pocket staple somewhere for aesthetic look. Then upper part of denim pant cross walk looking it take on a heat pipe then spray potassium permanganate for permanent wrinkle. This washing process have many critical change of physical property of denim garments [14]. Enzyme wash, rinse wash, bleach wash, potassium permanganate wash, acid wash, stone wash, towel wash, stone-enzyme wash. Among these wash are dye wash strategy for shade match the required garments. Dyeing is the heart of any garments. Dyeing is necessary for garments to get different color, look and many things. In Standard group we seen six dyeing mainly wants their buyer for customer need. They are pigment dyeing, reactive dyeing, direct dyeing, asudal dyeing, near wash dyeing, double dyeing etc.

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