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Scouring Process KSS

Scouring is a process used to remove natural and synthetic impurities from fibers. It involves extracting, emulsifying, and saponifying contaminants using chemicals like sodium hydroxide or sodium carbonate, or enzymes. The objectives of scouring are to remove all types of impurities, reduce hydrophobicity, and increase absorbency of fibers for downstream processes. Key factors that affect scouring include the type, color, cleanliness, twist, count, and construction of the fabric being processed.

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Sayed Toiabur Rahman
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107 views18 pages

Scouring Process KSS

Scouring is a process used to remove natural and synthetic impurities from fibers. It involves extracting, emulsifying, and saponifying contaminants using chemicals like sodium hydroxide or sodium carbonate, or enzymes. The objectives of scouring are to remove all types of impurities, reduce hydrophobicity, and increase absorbency of fibers for downstream processes. Key factors that affect scouring include the type, color, cleanliness, twist, count, and construction of the fabric being processed.

Uploaded by

Sayed Toiabur Rahman
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Scouring Process

What is Scouring?
• Natural fibers contains –
• Oils, fats, Waxes, Minerals etc
• Synthetic fibers contain-
• Spin finishes, coning oils, knitting oils
• Mill grease
• The Process of removing these impurities is Scouring
• Extraction, dissolving impurities in organic solvent
• Emulsification, forming stable suspension of impurities in water
• Saponification, converting contaminates into water soluble components
Types of Scouring
• Scouring by chemical means (NaOH, Na2CO3)
• Bio-scouring or scouring with enzymes

Objectives
• Removal of all types of impurities
• Reduce hydrophobicity
• Increase absorbency for bleaching, dyeing, printing and finishing
Scouring Agents
Removal Mechanism
Typical Enzymatic Scouring
Enzymatic Cotton Scouring Process
Process Description
Chemical Scouring
Scouring and Bleaching
Chemicals Used and Purpose
Factors Affecting Scouring

• Type of fabric

• Color of fabric

• Cleanliness of fabric

• Twist and count of yarn

• Construction of the fabric


Scouring of Other Fibers
Estimation of Scouring

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