Latex
A water emulsion of synthetic rubber, natural rubber,
or other polymer. In carpet, latex is used for laminating secondary
backings to tufted carpet, backcoating carpet and rugs, and for backcoating
woven carpets and rugs. Almost all carpet latex consists of styrene-butadiene
synthetic rubber (SBR) compounded with large quantities of powdered
filler.
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Level loop pile
A woven or tufted carpet style having all tufts in
a loop form and of substantially the same height.
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Light traffic
Less than 100 traffics per day. Could also include
some directional traffic, but no tracked-in dirt. (See "Foot
traffic units.")
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Lightfastness
The degree of resistance of dyed textile materials to the colour-destroying
influence of sunlight. Two methods of testing are in use:
- exposure to sunlight, either direct or under glass; and
- accelerated laboratory testing in which several types of artificial
light sources are used. (See "Fadeometer.")
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Loop pile
A tufted or woven carpet pile surface where
the face yarns are comprised of uncut loops. Loop pile can be level,
textured or patterned.
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Luster
Brightness or reflectivity of fibres, yarns,
carpets or fabrics. Synthetic fibres are produced in various luster
classifications including bright, semi-bright, semi-dull and mid-dull.
The luster of finished carpet could also be influenced by yarn heatsetting
methods, dyeing and finishing. In high-traffic commercial areas, duller
carpet yarns are often preferred for soil-hiding ability.
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