TextileGlossary.com

What is "Covert" - Definition & Explanation

A medium to heavy twill fabric with a contrast in color between the twill line and the ground. Usually has a mottled or flecked appearance caused by using a warp yarn with 2 or more colors twisted together. The filling generally is of a single color.
A warp-faced fabric, usually of a twill weave, with a characteristic mottled appearance obtained by the use of a grandrelle (two-colour twisted yarn) or mock grandrelle warp.
A medium-weight twill fabric often used for raincoats, with a mottled appearance.

Some other terms

Some more terms:

A unit of thermal resistance. The insulation required to produce the necessary heat to keep an individual comfortable at 21 degrees Centigrade with air movement at .1 m/s. One clo is about equal to...
yarns made up of 2 different colors, produced by combining fiber strands (rovings) of 2 different colors, or twisting together 2 yarns of different colors, or by cross dyeing plied yarns of 2...
The density of a material divided by the density of water. Expressed as a number greater than 0. Materials with specific gravity less than 1.00 will float and materials with specific gravity greater...
A fabric in which certain yarns project from a foundation texture and form a pile on the surface. Pile yarns may be cut or uncut in the fabric. Corduroy and velveteen are examples of cut filling pile...
A term used to describe a fabric that burns very slowly, or has the ability to self-extinguish upon the removal of an external flame. Flame Retardant - A chemical applied to a fabric, or incorporated...

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