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M. Sharan and S. Haldar
The count of the fibers was also determined by indirect system of yarn numbering
using Beasley’s yarn balance. The instrument consists of hook at one end and a
pointer at the other end. A standard weight (0.040 g) was hung on the notch of the
beam. Template was used to cut the length of fibers based on cotton count system.
The fibers were kept on the hook until the pointer reaches the datum line. The count
is the number of short length filament fibers used to balance the beam.
2.5.2 Determination of Shrinkage in Yarns
Shrinkage of the yarns was determined by using wet bulb tube filled with cold water.
For the test the yarn of known length was measured. One end of the yarn was knotted
with small clip and then dipped in the water and other was knotted in the hook outside
the tube and kept for 30 min. After 30 min the yarn was taken out from the tube and
kept for drying at room temperature. Then the length was measured and calculations
were done using the following formula:
% Shrinkage =
Original length − Shruken length
Original length
× 100
2.5.3 Determination of Yarn Strength
Tensile strength of the yarns was determined using Instron universal tensile tester.
The instrument works on constant rate of elongation principle (CRE). For the test the
yarn of known denier was clipped between two jaws with the gauge length 500 mm
(50 cm), and the pulling speed was 500 mm/min.
2.5.4 Determination of Yarn Twist
The amount of twist was calculated on Alfred Suter twist tester. The sample length
was 10 in. for test length with tension arrangement.
2.5.5 Yarn Wicking
For determining the wicking property of the yarn, the setup was fabricated. The frame
of the apparatus was made using stainless steel bar. This bar was supported on the
base. A horizontal clamp bar was attached at the top of this bar, which was used to
clamp the specimen. A stainless steel scale was attached to the clamp vertically. A
glass reservoir was placed on the base of the frame. The reservoir was filled with
250 ml of 1 % dye solution. Two clips were used, one for clamping the sample at the
top and other at the bottom of sample to keep it in a straight position.
M. Sharan and S. Haldar
The count of the fibers was also determined by indirect system of yarn numbering
using Beasley’s yarn balance. The instrument consists of hook at one end and a
pointer at the other end. A standard weight (0.040 g) was hung on the notch of the
beam. Template was used to cut the length of fibers based on cotton count system.
The fibers were kept on the hook until the pointer reaches the datum line. The count
is the number of short length filament fibers used to balance the beam.
2.5.2 Determination of Shrinkage in Yarns
Shrinkage of the yarns was determined by using wet bulb tube filled with cold water.
For the test the yarn of known length was measured. One end of the yarn was knotted
with small clip and then dipped in the water and other was knotted in the hook outside
the tube and kept for 30 min. After 30 min the yarn was taken out from the tube and
kept for drying at room temperature. Then the length was measured and calculations
were done using the following formula:
% Shrinkage =
Original length − Shruken length
Original length
× 100
2.5.3 Determination of Yarn Strength
Tensile strength of the yarns was determined using Instron universal tensile tester.
The instrument works on constant rate of elongation principle (CRE). For the test the
yarn of known denier was clipped between two jaws with the gauge length 500 mm
(50 cm), and the pulling speed was 500 mm/min.
2.5.4 Determination of Yarn Twist
The amount of twist was calculated on Alfred Suter twist tester. The sample length
was 10 in. for test length with tension arrangement.
2.5.5 Yarn Wicking
For determining the wicking property of the yarn, the setup was fabricated. The frame
of the apparatus was made using stainless steel bar. This bar was supported on the
base. A horizontal clamp bar was attached at the top of this bar, which was used to
clamp the specimen. A stainless steel scale was attached to the clamp vertically. A
glass reservoir was placed on the base of the frame. The reservoir was filled with
250 ml of 1 % dye solution. Two clips were used, one for clamping the sample at the
top and other at the bottom of sample to keep it in a straight position.