The use of finishes revision notes

Understanding Fabric Finishes

Fabric finishes are crucial in enhancing the properties of textiles, making them suitable for specific end uses. There are two main categories of finishes: mechanical and chemical.

Mechanical Finishes

Mechanical finishes involve physical processes that alter the fabric's characteristics:

• Brushing/Raising: Creates a soft surface by lifting fibers, enhancing warmth and texture.
• Calendaring: Involves passing fabric through heated rollers to create a smooth, glossy finish.
• Embossing: Uses heat and pressure to create patterns on the fabric surface.
• Heat Setting: Particularly for thermoplastic fibers, this process establishes permanent shapes like pleats or crinkles, reducing creasing and shrinkage.
• Stone and Sand Washing: Used to give denim a worn look, enhancing softness and comfort.

Understanding how these finishes modify physical characteristics is essential. For instance, trapped air in fabrics can provide insulation, while smooth surfaces reflect light better than textured ones.

Chemical Finishes

Chemical finishes involve applying substances to fabrics to enhance their properties:

• Mercerisation: Increases strength and luster, particularly in cotton.
• Flame Retardancy: Chemicals like Proban® and Pytovatex® make fabrics resistant to fire.
• Water Resistance: Treatments that repel water, useful for outdoor fabrics.
• Non-Iron/Cease Resistance: Finishes like Teflon reduce wrinkling and maintenance needs.
• Shrink Resistance and Anti-Felting: Prevents fabric from shrinking or pilling.
• Moth Proofing and Hygienic Treatments: Protects against pests and enhances cleanliness.

Laminating as a Finishing Process

Laminated fabrics consist of multiple layers, providing unique properties:

• Gore-Tex®: A waterproof, breathable fabric ideal for outdoor wear.
• Sympatex®: Another breathable, waterproof option, often used in high-performance clothing.
• Bonded Fabrics: Combine materials like faux leather with woven fabrics for added stability.

Understanding these finishes allows for better design choices and product development in fashion and textiles.