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SleepTech_January - February 2019

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124<br />

Hourglass, Continuous and Offset<br />

Coils.<br />

Coir pad: An insulator pad made<br />

from coconut husk fiber, garnetted,<br />

needled, bonded and pre-cut to<br />

size.<br />

Comfort system: Refers to the<br />

upholstery layers of the mattress,<br />

generally consisting of a combination<br />

of materials (cover, cushioning,<br />

topper pad, insulators, etc.).<br />

Conjugate polyester fiber: Spirally<br />

crimped fiber that is crimped chemically<br />

rather than thermally. Is very<br />

durable and resilient.<br />

Continuous coils: An innerspring<br />

configuration in which the rows of<br />

coils are formed from a single piece<br />

of wire.<br />

Conventional bedding products:<br />

Mattresses and foundations in the<br />

conventional adult sizes of twin,<br />

twin extra long, full, full extra long,<br />

queen and king.<br />

Convertible sofa: A sofa with a<br />

bed folded beneath the seating<br />

surface, generally consisting of a<br />

mattress resting on a metal mechanism.<br />

Also called “sleep sofa” or<br />

“sofa sleeper.”<br />

Convoluted foam: Better known as<br />

“egg-crate” foam that is specially<br />

cut to produce hills and valleys,<br />

giving gentle softness and more<br />

surface comfort. Foam surface<br />

treatment is available in multiple<br />

patterns.<br />

Cornell test: Devised by Cornell<br />

University School of Hotel/Motel<br />

Administration. Designed to test<br />

cosmetic performance of bedding<br />

sets, such as body impression or<br />

support firmness. Two round surfaces<br />

are pounded into the finished<br />

product 100,000 times and checked<br />

periodically for failure or changes.<br />

Corner guards: Molded plastic or<br />

metal, (sometimes upholstered) fittings<br />

secured to foundation corners<br />

to prevent material damage from<br />

the bed frame.<br />

Cotton felt: Produced by a garnett<br />

machine which combs cotton and<br />

other fiber binders into a continuous<br />

web or layer. Several such<br />

layers combined are called cotton<br />

“batt”. For compressed cotton felt,<br />

thick layers of garnetted cotton<br />

fiber are mechanically compressed<br />

to reduce body impressions.<br />

Cotton linters: The short fibers<br />

adhering to the seed after the long<br />

staple fiber has been removed in<br />

the ginning process. Used in making<br />

cotton felt.<br />

Cotton pickers: “Fall out” from ginning<br />

or garnetting. These shorter<br />

staple cotton fibers are blended<br />

with linters to produce cotton felt.<br />

Crown: A convex surface on a mattress.<br />

Mattresses with a half-inch<br />

crown are a half-inch thicker at the<br />

center than at the edges.<br />

Cushioning: Materials that lie<br />

above the insulator and below the<br />

fabric covering in an innerspring<br />

mattress. These materials are typically<br />

combinations of polyurethane<br />

foam, cotton felt, and/or mademade<br />

fibers.<br />

Damask: Woven ticking produced<br />

on a loom that has yarns running<br />

at 90-degree angles to each other,<br />

the warp and the weft. The damask<br />

design is woven into the fabric<br />

rather than printed on the surface.<br />

Density: A measure of weight per<br />

cubic volume, usually expressed<br />

in pounds per cubic foot. Often<br />

referred to when discussing foam.<br />

Double tempering: Heating of wire<br />

components, usually in an oven, after<br />

they have been given shape or<br />

form and have been electronically<br />

stress-relieved. Refers to tempering<br />

coils as well as border rods and<br />

helicals in a complete spring unit.<br />

Dual-purpose: A broad term used<br />

to include all sleep pieces, which<br />

can be converted to other uses,<br />

including: convertible sofas,<br />

high-risers, daybeds, futons, etc.<br />

See Convertible Sofa.<br />

Dust cover: A woven or non-woven<br />

fabric attached to the underside of<br />

a foundation to prevent the collection<br />

of dust inside. May also be<br />

known as “sheeting” or “cambric.”<br />

Edge guard: Generally an extra<br />

component added to the edge of a<br />

mattress and/or box spring to give<br />

support on the sides.<br />

Engineered edge support: A special<br />

design where the coils on the<br />

outer edge of an innerspring unit<br />

are actually positioned under the<br />

border rod. Most units have the<br />

coils recessed from the edge, which<br />

can contribute to a “roll out of bed”<br />

feeling.<br />

Euro-top mattress: A mattress featuring<br />

a raised, squared-off surface<br />

finishing treatment filled with soft<br />

comfort layers and attached to the<br />

mattress upholstery at the tapeedge.<br />

Fabric cover: Cloth or textile material<br />

woven, knitted or felted of<br />

any fiber or mixture of fibers. Often<br />

referred to as “ticking” or mattress<br />

fabric.<br />

Fales pad: Compressed cotton felt<br />

that is stitched together to better<br />

retain compression.<br />

Fiber pad: Usually refers to manmade<br />

or natural fibers (wool, silk,<br />

etc.) that are garnetted, needled,<br />

carded and/or bonded together.<br />

Often used in quilting panels for<br />

mattress tops.<br />

Filler cloth: Refers to a plain fabric<br />

used on the top of a foundation

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