AUTEX Research Journal, Vol. 7, No3, September 2007 © AUTEX
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Processing of microfibres [4]
Carding
It has so far proved impossible to card microfibres at production rates which are comparable with
conventional type of fibres, and so the cost per unit weight of production is much greater. In carding it
is necessary to have a greater density of carding wire points.
Winding and warping
All guide surfaces must be very smooth and in the best mechanical condition, as microfilaments are
likely to break more easily than regular filament. The frictionless rotating discs type of tension devices
are desired to minimise the drug.
Sizing
Warp sizing of microfibres should ideally be done on single-end sizing machines to minimise filament
breakage at splitting rods. If single-end sizing is not available, then a pre-dryer is essential. The size
pick up on microfibre yarn is higher and it is also more desirable. The size recipe should be decided by
trial and error determining.