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Waterproofing garments with rubber was an old idea and was practised in pre-Columbian times by the Aztecs, who impregnated fabric with latex. Later French scientists made balloons gas-tight (and incidentally, impermeable) by impregnating fabric with rubber dissolved in turpentine, but this solvent was not satisfactory for making apparel.
Drop of water on 100% polyester textile. Waterproof/breathable fabrics resist liquid water passing through, but allow water vapour to pass through. Their ability to block out rain and snow while allowing vapour from sweat to evaporate leads to their use in rainwear, waterproof outdoor sports clothing, tents, and other applications.
[citation needed] Also known as "foul weather gear", contemporary oilskins include such innovations as DWR-coated nylon on their low end [2] and Gore-Tex and other proprietary waterproof membranes on the high. [3] A Sou'wester, a traditional form of collapsible oilskin rain-hat, is longer in the back than the front to fully protect the neck. [4]
Gore-Tex is W. L. Gore & Associates's trade name for waterproof, breathable fabric membrane. It was invented in 1969. Gore-Tex blocks liquid water while allowing water vapor to pass through and is designed to be a lightweight, waterproof fabric for all-weather use.
The fabric was first stretched on a tenter frame and sized with animal gelatine. The oil was then applied and allowed to cure between coats. As the cure relies on oxidation by the air, thin coats and long cure times between are required. [1] [2] Overlaps between sheets of fresh oilcloth would amalgamate naturally when pressed together.
For planting grass, on areas that have steep slopes or high levels of soil erosion, a layer of hessian jute tacked on over grass seeds can prevent seeds from being moved by rain, runoff, or wind. Landscapers can use this fabric for many uses due to its strength, durability, moisture resistance, and protective properties.
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Kevlar (para-aramid) [2] is a strong, heat-resistant synthetic fiber, related to other aramids such as Nomex and Technora.Developed by Stephanie Kwolek at DuPont in 1965, [3] [2] [4] the high-strength material was first used commercially in the early 1970s as a replacement for steel in racing tires.
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