Textile Services
Pretreatments
Singeing
Desizing
Prewashing
Mercerising
Bleaching
Heat Setting
Dyeing
Optic
Reactive
Vat
Acid
Disperse
Basic
Pigment
Fluorescent
Thermochromic
Photochromic
Sulfur
Indigo
Chemical Finishing
Elasticity
Softening
Silk Touch
Parfum Smell
Sewing Improbability
Easy Care
Physical Finishing
Raising
Brush Sueding
Shearing
Tumbling
Technical Applications
Uv protection
Flame retardant
Insect repellent
Antibacterial
Water and Oil repellent
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Prewashing
General
Prewashing is a cleaning process to remove impurities from the fibre to make them absorbent to dyes.
It's done before bleaching if this is a cellulosic fibre.
Greige fabric containing fats and waxes prevent penetration of water soluble dye into the fibre.
Thus a prewashing process is necessary to remove all impurities.
Applications
Pre Washing quality is identified by the absorbency of the fabric towards liquids.
Two technical term is used:
Hydrophobic: Fabric to repel water because it contains impurities
Hydrophilic: Fabric to absorb water, which means absorb aslo water based dyes.
Functions
Fat content of some fiber:
Cotton: 0.6%
Linen: 1.7%
Hemp: 0.7%
Ramie: 0.3%
Jute: 0.3%
Specifications
Order Data
Pre Washing: PRS24
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