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FTTS-FA-001 Antibacterial Textiles for General Use
FTTS-FA-002 Antibacterial Textiles for Medical Use
FTTS-FA-003 Electromagnetic Shielding Textiles
FTTS-FA-004 Moisture Transferring and Quick Drying Textiles
FTTS-FA-005 Water-Vapor Permeable and Liquid-Water Impermeable Textiles
FTTS-FA-006 Antifungal Textiles
FTTS-FA-007 Wrinkle Free Textiles
FTTS-FA-008 Ultraviolet Protective Textiles
FTTS-FA-009 Antistatic Textiles
FTTS-FA-010 Far Infrared Textiles
FTTS-FA-011 Water Repellent Textiles
FTTS-FA-012 Oil Repellent Textiles
FTTS-FA-013 Stain Release Textiles
FTTS-FA-015 Flame-Resistant Textiles
FTTS-FA-016 Charcoal Contained Filler Fiber Textiles for Warmth Retention
FTTS-FA-017 Deodorization for Charcoal Contained Filler Textiles
FTTS-FA-018 Deodorized Textiles
FTTS-FA-019 Cool Feeling Textiles
FTTS-FA-020 Liquid Moisture Management Properties of Textile Fabrics
FTTS-FA-023 Generating Heat-Textiles
FTTS-FA-027 Antibacterial Activity
FTTS-GA-024 Cycling Clothing
FTTS-GA-025 Jogging Clothing
FTTS-GA-026 Energy-saving Clothing
 
 
FTTS-FA-005
FTTS-FA-005 Water-Vapor Permeable and Liquid-Water Impermeable Textiles

FTTS-FA-005 Water-Vapor Permeable and Liquid-Water Impermeable Textiles

 

Water-Vapor Permeable & Liquid-Water Impermeable Textiles allow vapor to pass through but not liquid. Thus perspiration vapor readily departs from the skin, while water outside the garment cannot enter. The inside of the garment remains free of moisture droplet and the wearer stays warm and dry. Water-vapor permeability means the vapor emitted from the surface of an exercising body can evaporate outside the textile, so the temperature decreases and the wearer maintains ultimate comfortableness and dryness. Liquid-water Impermeability means the textile resists water penetration. Most commonly, the surface of this type of textile is coated with PU, PTFE, TPU, TPE or other materials. The same effect can also be achieved by laminating fabric with a water-impermeable film.


Water-vapor permeable & liquid-water impermeable textiles are manufactured in three ways:
1. Direct coating
2. Lamination
3. High-density woven fabrics

  • Two kinds of materials are employed for direct coating or lamination:
    1. Micro-porous material
    2. Hydrophilic material

The micro-porous resin or film contains thousands of micro-porous on every square-centimeter of surface. These apertures are far smaller than water droplet. Consequently, even under pressure the materials completely prevent water from penetrating while simultaneously driving out moisture from inside.

Hydrophilic materials utilize the hydrophilic group to absorb moisture which then evaporates through diffusion and air convection. Manufactured for specific environmental demands, water-vapor permeable & liquid-water impermeable textiles are available on different combinations of hydrostatic pressure endurance and water-vapor permeability.

With current technology in Taiwan, water-vapor permeable & liquid-water impermeable textiles made by lamination can possess a hydrostatic pressure endurance of at least 40,000 mmH2O (ISO 811), a water-vapor permeability of at least 20,000 g/m2‧24hr (JIS L1099-B1) and a RET of 6 m2pa/w or less. Their counterparts made by direct coating can possess a hydrostatic pressure endurance of at least 10,000mmH2O (ISO 811) and a water-vapor permeability of at least 10,000 g/m2‧24hr (JIS L1099-B1).

Scope

This criterion is applicable to the evaluation and testing of water vapor permeability & water resistance of textiles

 







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