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What is "ILD" - Definition & Explanation

Indentation Load Deflection (ILD) refers to the firmness of a piece of foam. The lab puts a 4" x 15" x 15" piece of foam on a flat surface. Then a round metal plate, 8" in diameter, pushes down on that piece of foam. The amount of pounds of pressure it takes to squeeze the 4" piece of foam to 3 inches (25% compression) is referred to as the ILD. A low ILD, such as 10, doesn't offer much resistance and is an extremely soft piece of foam. A piece of foam that takes 46 pounds of pressure

Some other terms

Some more terms:

a) The degree of parallelism of fibres, usually as a result of a combing or attenuating action on fibre assemblies that causes the fibres to be substantially parallel to the main axis of the web or...
Muslin, named for Mosul, a textile center in ancient Mesopotamia (modern Iraq), is now a generic term for a simple-weave fabric ranging from sheer to heavy sheetings. Fine muslin is smooth, with a...
Cotton fabrics such as chintz or tarlatan treated with starch, glue. paraffin, or shellac and run through a hot friction roller to give a high polish. These types are not durable in washing. Newer,...
A weave in which the filling fibers go over many warp fibers before going under a warp fiber, creating the illusion that the fibers are floating, and creating fabric that is very shiny but easily...
Diaper a fabric with a distinctive pattern; a rich silk fabric; a soft usually white linen or cotton fabric used for tablecloths or towels. A basic garment for infants consisting of a folder cloth...

Companies for ILD:


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