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Microfibre cleaning cloth
Micro fibre is a fibre that is less than one denier per filament. The Denier is a measure
of linear density used in the Textile Industry and denotes the size of a fibre where
9000 metres of a one denier fibre weighs one gram. Micro fibres have been commercially
available for several decades but their use only came into prominence in the 1990's and
are now most commonly encountered in cleaning cloths.Click on the following link to find out more about
. Many forms of mirofibre are made from
split-conjugated fibres of polyester and nylon and yarn made from such fibres can be
woven into cloths. My SEM image below shows a cross section of a yarn
made from such micro fibres and it is seen that fibres readily split up into wedge shaped
filaments (polyester component). The adjacent diagram contrasts how microfibres trap dirt particles compared to round or bean shaped fibres such as cotton. When the cloth is used to clean a surface, these filaments
act in a similar fashion to the rubber wiper on a car windscreen and can lift up dirt easily.
In the case of grease and liquid soiling, the fine channels between the filaments in the fibre
wick up these materials by capillarity. The central photograph shows an SEM image of a micro
fibre cloth. This image has been false coloured for reproduction.