Introduction
Quality needs to be defined in terms of aparticular framework of cost. The
national regulatory quality certification
and international quality programmes
like ISO 9000 series lay down the broad
quality parameters based on which
companies maintain the export quality
in the garment and apparel industry.
Here we will discuss Variation in results
occurring during checking the color
fastness to rubbing test.
Summary of Test Method
Standard cotton fabric is rubbed against
the surface of coloured textile specimen
to check the transfer of colour.
Specimen to be tested is clamped on base
plate.
Crocksquare (Standard cotton fabric) is
mounted on rubbing finger.
Rubbing finger is moved against the
fabric surface for defined number of
cycles.
Crocksquare is removed from rubbing
finger. It is conditioned and then
evaluated for staining using grey scales.
In case of wet rubbing, the crocksquare
is wetted with water and rubbed against
the specimen in the same way as
mentioned above.
Apparatus and materials
Crock meter, Crocking Cloth (Cotton
rubbing fabric), Grey Scales Staining,
Colour Matching Cabinet & Distilled /De-
ionised Grade 3 Water for wet rubbing
Testing specifications as per AATCC & ISO
Standards
AATCC - 8
Wet pick-up : 65% +/- 5% ,Specimen size
at least 50 x 130 mm
Vertical Load : 9 N +/- 10% ,Finger
Diameter : 16 +/- 0.3 mm
Position long dimension oblique to warp
and filling or wales and courses.
ISO 105 X12
Wet pick-up : 95 - 100%
Specimen size at least 50 x 140 mm
Vertical Load - 9 +/- 0.2 N ,Finger
Diameter - 16 mm
Position warp parallel to long dimension
for one specimen and weft parallel to
long dimension for other specimen or
diagonally.
Rubbing distance: 104 +/- 3mm
