Fiber white fly honeydew contamination and its effect towards
neps, and Fiber preparation
fiber is frequently found to be contaminated 'Honey dew' excretion
created by white flies. These are normally found on African species
more due to conditions under which Cotton there is grown. African
Cotton is almost all grown non-irrigated and in vast areas in savanna
stretched regions. These areas have a large number of white flies which
love cotton buds. Their secretion contains a sticky substance called
Tsudakoma ZAX makes its high end mark
is more disturbing to the Spinning personnel than 'Honey dew'. Fibers
stick together, they are difficult to open and clean, as well as tend
to be easily damaged during the mechanical process in blowroom, and
carding. Mechanical forces will break fibers and create more neps as a
result, as well as fiber fly in the spinning process.
immaturity in Cotton and its correlation towards neps
'spinner' knows the implications of immature fibers in cotton. In
practical terms immature fiber content is noticed in several processes
a nep count is taken right at the bale - preferably from as many bales
as possible - in at least every tenth bale and 4 corners. Before bales
are put on opening line. High variations can be observed. Bales must be
seggregated and classified , then sorted before adding to the
count must be followed through to final stage with correcting measuries
applied to each process if necessary.
on origin, staple, nep content, final count, spinning
process, method, a more careful approach can so be achieved.
The spinning process can be better controlled this way.
method of seggregation can safe the mill substantial costs in terms of
: reducing ends down, less imperfections, better quality (
elongation, tenacity ) and evenness values, as well as less creation of
non - and - recyclable fiber waste.
benefits of applied careful measures can not be underestimated, and
will run into thousands of USDollars for each batch processed in this
modern testing instruments such as AFIS can assist you greatly, an HVI
is a must. Still many mills do not invest in these instruments, and
prefer the older methods like Pressley, Micronaire.
are put by mill owners with insufficient or no knowledge of the
spinning process and their attempt to 'save money' in order to enhance
their own gains.