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Velcro IP Holdings LLC, [2] [4] [5] doing business as Velcro Companies and commonly referred to as Velcro (pronounced / ˈ v ɛ l k r oʊ /), [1] is a British privately held company, founded by Swiss electrical engineer George de Mestral in the 1950s. It is the original manufacturer of hook-and-loop fasteners, which de Mestral invented. [2]
Hook-and-loop fasteners, commonly known as Velcro (a genericized trademark), hook-and-pile fasteners or touch fasteners are versatile fastening devices that allow two surfaces to be repeatedly attached and detached with ease. Invented in the mid-20th century, they are widely used in clothing, accessories, and various industrial and consumer ...
Seam allowance (sometimes called inlays) is the area between the fabric edge and the stitching line on two (or more) pieces of material being sewn together. Seam allowances can range from 1 ⁄ 4 inch (6.4 mm) wide to as much as several inches. [1] Commercial patterns for home sewers have seam allowances ranging from 1 ⁄ 4 to 5 ⁄ 8 inch (6. ...
Velcro, the invention for which de Mestral is famous De Mestral first conceptualised hook and loop after returning from a hunting trip with his dog in the Alps in 1941. [ 5 ] [ 6 ] [ 7 ] After removing several of the burdock burrs (seeds) that kept sticking to his clothes and his dog's fur, he became curious as to how it worked.
A wale is a column of loops running lengthwise, corresponding to the warp of woven fabric. [6] The lower the number, the thicker the wales' width (e.g., 4-wale is much thicker than 11-wale). Wale count per inch can vary from 1.5 to 21, although the traditional standard is usually between 10 and 12.
The surface and the yarn in these fabrics are also called "pile". In particular "pile length" or "pile depth" refer to the length of the yarn strands (half-length of the loops). Pile length affects and is affected by knot density : "The greater the knot density, the thinner the weft and warp yarns and the more weakly are they twisted; the ...
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