Durable water repellent, or DWR, is a coating added to fabrics at the factory to make them water-resistant (hydrophobic). Most factory-applied treatments are fluoropolymer based; these applications are quite thin and not always effective. Durable water repellents are commonly used in conjunction with waterproof breathable fabrics such as Gore-Tex to prevent the outer layer of fabric from becoming saturated with water. This saturation, called 'wetting out,' can reduce the garment's breathability (moisture transport through the breathable membrane) and let water through. As the DWR wears off over time, re-treatment is recommended when necessary. Many spray-on and wash-in products for treatment of non-waterproof garments and re-treatment of proofed garments losing their water-repellency are a
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- Durable water repellent (nl)
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| - Durable water repellent, or DWR, is a coating added to fabrics at the factory to make them water-resistant (hydrophobic). Most factory-applied treatments are fluoropolymer based; these applications are quite thin and not always effective. Durable water repellents are commonly used in conjunction with waterproof breathable fabrics such as Gore-Tex to prevent the outer layer of fabric from becoming saturated with water. This saturation, called 'wetting out,' can reduce the garment's breathability (moisture transport through the breathable membrane) and let water through. As the DWR wears off over time, re-treatment is recommended when necessary. Many spray-on and wash-in products for treatment of non-waterproof garments and re-treatment of proofed garments losing their water-repellency are a (en)
- Durable water repellent, of DWR, is een oppervlaktebehandeling (coating) die aan kledij wordt toegevoegd om ze waterafstotend (hydrofoob) te maken. De meeste coatings zijn op basis van fluorpolymeer. Waterafstotende lagen worden vaak gebruikt in combinatie met waterdichte ademende stoffen zoals Gore-Tex om te voorkomen dat de buitenste laag van de stof door water verzadigd raakt. Deze verzadiging, het 'nat worden' van het kledingstuk, vermindert het ademend vermogen van het kledingstuk (minder vochttransport door het ademende membraan) en kan de oorzaak zijn dat er water binnensijpelt. (nl)
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| - Durable water repellent, or DWR, is a coating added to fabrics at the factory to make them water-resistant (hydrophobic). Most factory-applied treatments are fluoropolymer based; these applications are quite thin and not always effective. Durable water repellents are commonly used in conjunction with waterproof breathable fabrics such as Gore-Tex to prevent the outer layer of fabric from becoming saturated with water. This saturation, called 'wetting out,' can reduce the garment's breathability (moisture transport through the breathable membrane) and let water through. As the DWR wears off over time, re-treatment is recommended when necessary. Many spray-on and wash-in products for treatment of non-waterproof garments and re-treatment of proofed garments losing their water-repellency are available. Older methods for factory application of DWR treatments involve applying a solution of a chemical onto the surface of the fabric by spraying or dipping. More recently the chemistry is applied in the vapor phase using chemical vapor deposition (CVD) machinery. The advantages of CVD include eliminating the use of hazardous and environmentally harmful solvents in the application process; requiring less chemical; and an extremely thin waterproof layer that has less effect on the natural look and feel of the fabric. Some researchers have suggested that the use of PFASs in water-repellent clothing is over-engineering, and comparable performance can be achieved using specific silicon- and hydrocarbon-based finishes. (en)
- Durable water repellent, of DWR, is een oppervlaktebehandeling (coating) die aan kledij wordt toegevoegd om ze waterafstotend (hydrofoob) te maken. De meeste coatings zijn op basis van fluorpolymeer. Waterafstotende lagen worden vaak gebruikt in combinatie met waterdichte ademende stoffen zoals Gore-Tex om te voorkomen dat de buitenste laag van de stof door water verzadigd raakt. Deze verzadiging, het 'nat worden' van het kledingstuk, vermindert het ademend vermogen van het kledingstuk (minder vochttransport door het ademende membraan) en kan de oorzaak zijn dat er water binnensijpelt. Het effect van de behandeling vermindert na verloop van de tijd. Herbehandelen kan (afhankelijk van het type) door een een droogcyclus in de droogkast of het aanbrengen van specifieke sprays. (nl)
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