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Namangan muhandislik-texnologiya instituti 7-8 oktabr 2-tom
properties of elastic materials and expanding the scope of their application is
certainly relevant.
Lycra threads are extremely thin (in the range of linear densities of 2.2-125
Tex), which allows you to add them to fabrics without changing their structure. In
this case,
the appearance, strength and elasticity of the material increases. The
range of polyurethane threads is determined by their purpose. They can serve as
auxiliary when splicing (joining together) or are available as wound with other
types of threads. Depending on the purpose of the material,
the percentage of
elastane in its composition is determined. The effectiveness of using polyurethane
fibers is shown in increasing the many advantages of the fabric to which it is
added. When stretched 8 times, the density (1.1 – 1.3 g/kub.sm) of lycra remains
the same without changing the original data. Although lycra belongs to the
category of synthetics, its fibers have good breathability.
It is known from world experience that the use
of high-tensile yarn in a
mixture with polyester fibers (polyester and lycra) makes it possible to produce
convenient and comfortable hygienic properties, elastic and compression products
for sports and therapeutic and preventive purposes [4].
