innovative yarn tension measuring instrument
which could help cut textile makers’
costs, has been unveiled at Leeds.
tension directly affects the quality of cloth,
so the device is important for textile manufacturers,
in particular for British firms, many of which
are specialising in the increasingly important
technical textiles market.
novelty of the instrument is that it is does
not need to touch the yarn, so machines do
not need to be stopped and measurements are
not affected by contact.
instrument shines light from a light-emitting
diode onto moving yarn and measures its oscillation
using a low-cost light sensor similar to those
used in digital cameras. From this, yarn tension
is calculated and the information can be used
for process monitoring or control.
Bandara (above) of the school of
design, said: “The device is based on
well-known principles but a general purpose
instrument of this kind hasn’t been
developed before – I don’t know
why, but I’m grateful for that. It is
a novel instrument that will address an important
Bandara has lodged a priority patent with
the Patent Office and is working with textile
instrument company SDL Atlas to develop a
compact device suitable for use on textile
invention originated during a 27-month DTI/EPSRC-funded
project from November 2002. It is now being
continued under a one-year Research Assistant’s
Industrial Secondment project.