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Tyvek's properties—such as being difficult to tear but easily cut, and waterproof against liquids while allowing water vapor to penetrate—have led to it being used in a variety of applications. Tyvek is often used as housewrap, a synthetic material used to protect buildings during construction, or as personal protective equipment (PPE). [1]
Housewrap (or house wrap), also known by the genericized trademark homewrap (or home wrap), generally denotes a modern synthetic material used to protect buildings. Housewrap functions as a weather-resistant barrier , preventing rain or other forms of moisture from getting into the wall assembly while allowing water vapor to pass to the exterior.
Air barrier products may take several forms: Mechanically-attached membranes, also known as housewraps, usually a polyethylene-fiber or spun-bonded polyolefin, such as Tyvek is a generally accepted moisture barrier and an air barrier (ASTM E2178). Self-adhered membranes, which are typically also a water-resistant barrier and a vapor barrier
A historic brick building in Germany covered with EIFS on the right side. Exterior insulation and finish system (EIFS) is a general class of non-load bearing building cladding systems that provides exterior walls with an insulated, water-resistant, finished surface in an integrated composite material system.
An alternative polymer of polyethylene fibres marketed as Tyvek by DuPont was developed for use as currency by the American Bank Note Company in the early 1980s. Haiti: 1982 Haiti released Tyvek-made Gourde banknotes in denominations of 1, 2, 50, 100, 250 & 500. The same denominations and a 5 Gourdes banknote were also released on paper.
Material is an extremely broad term basically meaning consisting of matter, and requires context to be useful. A textile is any material made of interlacing fibers, including carpeting and geotextiles, which may not necessarily be used in the production of further goods, such as clothing and upholstery.
Originally Tyvek was a housewrap material. It is now used in many fields, including roofing. Tyvek was discovered in 1955 by DuPont in the USA. Hope that helps — Preceding unsigned comment added by 86.131.40.216 15:29, 26 September 2006 I am the grandson of Walter Steuber. He developed Tyvek® in spite of what the DuPont history page says.
Nomex is a trademarked term for an inherently flame-resistant fabric with meta-aramid chemistry widely used for industrial applications and fire protection equipment. It was developed in the early 1960s by DuPont and first marketed in 1967. [1] The fabric is often combined with Kevlar to increase its resistance for breakage or tear.