Garment Dyeing

Garment Dyeing

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Garments that are made from grey cotton fabric can be dyed in a dye machine. Before dyeing some precautions are needed to avoid dyeing problems that may occur:

• The garment’s design is subject to an engineering point of view.
• If garment is made from grey fabric after desizing, scouring and bleaching then the possibility of problems will be reduced.
• If possible, garments should be made from grey fabrics of the same lot and same source.
• The seams should not be too tight or too loose especially in the areas containing elastic like waistband, cuff or areas which may create irregular dye penetration.
• The garments which are produced from woven and knitted fabrics should be pre-shrunk.
• If the garment fabric is of mixed fibres the dye selection should be done more carefully.
• Poor quality metals should not be used as accessories in the garments, if any metal component is used in the garments they should be made from nickel or its alloy.
• Sewing thread used for making the garment should be of the same fibre as the garment’s fabric, otherwise colour difference may occur.
• Buttons made from resin, cellulose or nylon may get damaged, polyester buttons are the safest to avoid any damage.
• If elastic is used in the garments and the elastic is made from natural rubber or polyurethane fibre it may create problems. To avoid any problems, the dye should be copper free.
• Extra care should be taken with garments have interlining.
• The garments made from compactly woven cotton fabric should be dyed with hot brand reactive dyes, otherwise problem of irregular dye penetration may occur.
• For some specific colour, if specific dyes are used then the dyeing cost will be lower. For example, navy blue and black colour could be produced in the garments by using sulphur dyes at lower cost.
• Presence of mineral impurities in the cotton fibres may vary which may impede the stability of peroxide liquor during bleaching with hydrogen peroxide. Even insoluble compounds may form during hydrogen peroxide bleaching. Those insoluble compounds may redeposit on chemicals are available to avoid such problem
• Crease marks may develop in the cotton garments during dyeing.

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