3-1-3 Heat set and singeing:
It is observed from table (3) that heat temperature set has
significantly affected on pilling tendency of fabric samples, with increasing
heat temperature that may be due to the heat temperature set the fiber within
the fabric surface and improves proportional pilling resistance. Polyester wool
fabrics can be heat set at temperature 180 Co 5 Co.
Table (4) represent that fabric pilling resistance
significantly increase with singeing treatment at 40 m/min speed. This
may be due to the singeing is removing the nap on fabric samples surface.
Although singeing is very effective in removing the surface
nap but it imparts some harshness to the fabric surface. For that after
singeing, softener can be added during washing to improve fabric surface.
Conclusion:
The pilling is formation of ugly looking small balls of
fibers on fabric surface. Pilling does not depend only on single factor but it
is the result of several factors such as fiber properties, yarn & fabric
structure and finishing processes. In case of polyester wool blended fabrics,
pilling tendency of the fubric increase with increase of the polyester content.
Finer yarns have lower pilling than coarser. The number of pills is less for
plain-woven fabrics compared to twill and satin woven fabrics due to the higher
intersections. Pilling resistance significantly increase with increasing heat set
temperature with all studied parameters.
Singeing plays a critical role than various studied factors
for pilling resistance which significantly increase with decreasing singeing
speed.
Acknowledgement:
The author is thankful to Mr. W. Abd- Eldaim the chairman of
DIAMOND TEXTILE com and Engineer IsLam Elgwaily the supervisor of testing
Laboratory. The author is also grateful to Prof. Dr. Sami Mansur and Dr. M.
Ezzat for their advices and helpful in the present work.
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