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Reticulated foam is a very porous, low density solid foam. 'Reticulated' means like a net. Reticulated foams are extremely open foams i.e. there are few, if any, intact bubbles or cell windows. In contrast, the foam formed by soap bubbles is composed solely of intact (fully enclosed) bubbles. In a reticulated foam only the lineal boundaries ...
Mattress. Two-sided, innerspring pillow-top mattress on box-spring foundation with a woven damask cover also called a mattress sheet. A mattress is a large, usually rectangular pad for supporting a lying person. It is designed to be used as a bed, or on a bed frame as part of a bed. Mattresses may consist of a quilted or similarly fastened case ...
Foam. Foams are materials formed by trapping pockets of gas in a liquid or solid. [ 1][ 2][ 3] A bath sponge and the head on a glass of beer are examples of foams. In most foams, the volume of gas is large, with thin films of liquid or solid separating the regions of gas. Soap foams are also known as suds .
Ethylene-vinyl acetate ( EVA ), also known as poly (ethylene-vinyl acetate) ( PEVA ), is a copolymer of ethylene and vinyl acetate. The weight percent of vinyl acetate usually varies from 10 to 50%, with the remainder being ethylene. There are three different types of EVA copolymer, which differ in the vinyl acetate (VA) content and the way the ...
Most standard memory foam has a density of 16–80 kg/m 3 (1 to 5 lb/ft 3). Most bedding, such as topper pads and comfort layers in mattresses, has a density of 48–72 kg/m 3 (3 to 4.5 lb/ft 3). High densities such as 85 kg/m 3 (5.3 lb/ft 3) are used infrequently. The firmness property (hard to soft) of memory foam is used in determining comfort.
Polyurethane synthesis, wherein the urethane groups −NH− (C=O)−O− link the molecular units. A kitchen sponge made of polyurethane foam. Polyurethane ( / ˌpɒliˈjʊərəˌθeɪn, - jʊəˈrɛθeɪn /; [ 1] often abbreviated PUR and PU) refers to a class of polymers composed of organic units joined by carbamate (urethane) links.
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