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TFPIA<br />
Textile Fiber Products Identification Act (approved by the U.S. Congress in 1958 and most<br />
recently amended in 1998). This legislation was intended to protect producers and consumers<br />
against misbranding and false advertising of the fiber content in textile fiber products. In<br />
addition to establishing generic names and definitions for manufactured fibers, the Act also<br />
sets forth labeling regulations and tolerances for fiber content.<br />
Thermal bonded/Thermobonded<br />
A web of fibers bonded by a thermal bonding (thermobonding) process.<br />
Thermal bonding/Thermobonding<br />
A technique for bonding a web of fibers in which a heat or ultrasonic treatment, with or<br />
without pressure, is used to activate a heat-sensitive material. The material may be in the<br />
form of homofil fibres, bicomponent fibers, fusable powders, as part of the web. The bonding<br />
may be applied all over (e.g. through or area bonding) or restricted to predetermined, discrete<br />
sites (e.g. point bonding).<br />
Thermoplastic<br />
A plastic that melts when heated.<br />
Thermoset<br />
A plastic, once formed, that does not melt when reheated.<br />
Thickness<br />
The dimension of a sheet or lamina measured perpendicular to the plane of the sheet.<br />
Through-air bonding<br />
A bonding system that that uses high temperature air to fuse the web’s fibers. There are two<br />
basic systems: blowing hot air through the web in a conveyor oven or passing heated air<br />
through the web on a rotating drum (illustrated below). Fabrics made from bicomponent<br />
fibers or blends of bicomponent and regular fiber are often bonded by through-air bonding<br />
systems. This method is sometimes referred to as air-through bonding.<br />
58 <strong>Nonwovens</strong> <strong>Glossary</strong>
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