1. What is a waterproof fabric?
Waterproof fabric is a material treated with special coatings or having structural features that prevent water penetration through its surface . unlike waterproof tissues (which only slow down moisture absorption), such materials completely block the water at a certain pressure measured in millimeters of the water column (mm h₂o) .}}
2. key production technologies
- Coatings (polyurethane, PVC, ptfe):Application of synthetic layers (for example, polyurethane) on the surface of the fabric is created by a water barrier .}
- Membrane technologies:The use of microporous membranes (for example, Gore-tex®) allows you to remove sweat out of the outside, preserving the fabric of the “breathing” .}
- Dense weaving:Some fabrics (for example, nylon ripstop) combine a dense interweaving of threads with impregnation for protection against water .
3. The main materials
- Synthetic fibers:Polyester, nylon - a base for most waterproof fabrics due to the strength and resistance to deformation .
- Natural fibers with impregnation:Cotton or mixed fabrics with wax or silicone coated (for example, waxed cotton) .
- Innovative materials:Teflon® Covering, ecological biodegradable impregnations .
4. area of application
- Clothing for outdoor activities:Jackets, pants for mountaineering, skiing sports .
- Overalls:Military equipment, protective clothing for employees of the Ministry of Emergencies .
- Medicine:Waterproof dressing materials and surgical coatings .
- Interior and technique:Covers for furniture, tents, backpacks, bags .
5. standards and testing
- ISO 811:Determines the level of water resistance (for example, 10 000 mm h₂o means that the fabric will withstand the pressure of a water column with a height of 10 meters) .}}}
- Breathing properties test (MVTR):Measures the speed of evaporation of moisture (g/m²/24h) .
- Certification:For example, WR (Water Resistant) or IP codes for electronics .}
6. Problems and solutions
- Coatings wear:Mechanical friction reduces the protection . The solution is multilayer structures (2L, 3L) .}}}
- Ecology:Toxicity PVC covers . trend - transition to PU and processed materials.
- Price:High -tech membranes (for example, Event®) require complex production .
7. The future of the industry
- Smart fabrics:Integration of sensors that change the properties of the material depending on the weather .
- Biomimetics:Imitation of the structure of lotus leaves for self -cleaning .
- Resipling:The use of redesigned polyester and biodegradable impregnations .
