Testing Methods
Testing Methods
PROCEDURE :
Condition the samples for 4 hrs before testing.
Cut three pieces of test fabric from different places by using GSM(gram per square meter) cutter.
Measure total weight of three samples.
EVALUATION :
GSM = total weight x 100
3
FABRIC CONSTRUCTION
PURPOSE : To check the EPI(ends per inch) & PPI(picks per inch) of the woven fabric.
For Knit fabric WPI (Wales/inch) & CPI (Courses /Inch)
PROCEDURE :
Condition the samples for 4 hrs .
Then Count the number of warp ends & filling yarns per inch by digital counter/ pick counting glass in three different
places.
EVALUATION :
total number of ends / picks in three different places
EPI / PPI = 3
RESULTS : Give the average result of the three different places in numbers.
Yarn count
PURPOSE : To check the fineness of yarn in the fabric.
PROCEDURE :
Remove the yarns from the fabric separately in the one (warp/weft) direction.
Calculate the total number of yarns .
Measure the length of each yarn & find the average length of the yarns .
Measure the weight of total number of yarns .
EVALUATION :
N = total number of yarns .
L = Avg length of the yarns.(in centimeter)
W = the weight of total number of yarns .( in grams)
Gray Scale
RATING :
PURPOSE : To evaluate the fabric color change and surface staining resulting from washing / laundering .
METHOD NO. : ISO 105 C06
PROCEDURE :
Prepare the test specimen with all Shade and multi-fiber of “10 x 4” cm size.
Attach (By Stitching) the multifiber on the face side of test specimen.
Prepare the required solution with 1000 ml distilled water ,4 gram ECE formulation phosphate B detergent , 1 gram
sodium perborate pure(trihydrate).
Put 150 ml prepared solution in each canister.
Add 10 stainless steel ball to each canister.
Adjust the gyrowash machine metioned bath temperature & preheat the solution on that temperature.
Enter a well test specimen into each canister. Clamp the covers on the canister.
Set the Gyrowaash machine time for 30 min. Then push Start button.
After 30 minute automatically stop the machine , remove the canisters from gyrowash machine. Take tested
specimen and wash it in distilled water properly.
Then remove the excess water by squeezing.
Finally dry the sample into the air.
RESULTS : After drying give the rating of color change & color staining of the tested sample by using the Gray Scale.
PURPOSE : To determine the amount of color transferred from the surface of colored fabrics to other white
fabric surfaces by rubbing.
EVALUATION :
Rate the dry and wet crocking cloth by using the Gray Scale rating .
RESULTS : Give the result in number.
NOTE : The pH of the above solutions brought to accurate with 0.1 mol/l sodium hydroxide.
RESULTS : After drying give the rating of color change & color staining of the tested sample by using the Gray Scale.
Cut the sample & multifibre / single-fiber adjacent fabric 4x10 cm size .
Sewing the multifibre/ single-fiber adjacent fabric to the face of the sample.
Take the actual weight of the Specimen with multifibre.
Wet the sample in the distilled water at room temperature for 30 mins .
After that remove the excess liquor from the specimen through passing between two glass rods.
Ensure the weighs of the specimen 2.25 ± 0.05 times its original weight .
Then place the sample between two acrylic plates. This way total 11 plates put in the Perspirometer. Fixed the screw of
Perspirometer with 12.5 Kpa force. Then put it in the oven for 4 hrs at 37±1 ° C .
Then Remove the perspirometer. All the tested sample allow to air dry.
RESULTS : After drying give the rating of color change & color staining of the tested sample by using the Gray Scale.
TEST SOLUTION :
Sodium Chloride - 30 grams
Magnesium Chloride (anhyd.) - 5 grams
Distilled Water - 1000 ml
PROCEDURE :
Cut the sample & multifibre / single-fiber adjacent fabric 6x6 cm size .
Sewing the multifibre/ single-fiber adjacent fabric to the face of the sample.
Take the actual weight of the Specimen with multifibre.
Wet the sample in the test solution at room temperature for 15 min .
After that remove the excess liquor from the specimen through passing between two glass rods.
Ensure the weighs of the specimen 2.25 ± 0.05 times its original weight .
Then place the sample between two acrylic plates. This way total 21 plates put in the Perspirometer. Fixed the screw of
Perspirometer with 4.5 kg force. Then put it in the oven for 18hrs at 38±1 ° C .
Then Remove the perspirometer. All the tested sample allow to air dry.
RESULTS : After drying give the rating of color change & color staining of the tested sample by using the Gray Scale .
PROCEDURE :
Condition the test fabric for at least 4hrs.
Prepare the test sample and standard blue wool at least 70x20 mm size .
First mount the standard blue wool in a standard frame .
Place the frame onto the frame holder in the machine and Set whether the movement of the frame holder is static or
rotational in the machine & then start the machine .
Run the machine until the shade of the blue wool is arrived according to customer requirement and check it frequiently
during measurement by the gray scale and finally note down the time .
Remove the blue wool sample .
Now mount the test specimen in a standard frame .
Place the frame onto the frame holder in the machine and Set whether the movement of the frame holder is static or
rotational in the machine & then start the machine .
Then run the machine up to the noted time .
After complete this procedure remove the test specimen and allow it to condition .
RESULTS : Rate the tested sample for color change by using the Gray Scale .
SEAM SLIPPAGE
PURPOSE :
METHOD NO. :
EVALUATION :
Report the mean of the five warp slippage & weft slippage result directly from the computer software as load /
force equivalent to a seam opening of 6 mm.
RESULTS :
Give the result in the unit of force and give a condition at the seam ( if needed) .
prepare five test sample with the Template size 25 x10 cm from the both warp and weft direction in the different
places of the fabric .
Fold the each sample 125 mm from one end with the parallel to the short direction of fabric.
Sew a seam about 20mm from the crease of fold using the sewing thread .
Make 11 plain lock stitches.
Cut 8 mm each seamed sample then left 12mm from the sewn seam line cutting through both layers of the fabric.
Set the machine at fabric tensile FOR ISO 13936-2 , Set the jaw face size 25 mm ,Put the customer details and
forward it .
Test the 5 weft direction ( warp over weft ) sample in the machine first then 5 warp direction
( weft over warp ) sample simultaneously .
Clamp the seamed portion of the test sample.
Set the sample in the machine & Select start button then clamp the upper jaw through F2 button and clamp the lower
jaw through F3 button , Finally select F9 button to start and get the results.
To continue this process select F9 button again.
Repeat this procedure with the rest test samples .
After completing the testing save the results and go to Last option by the F8 button to view the results.
EVALUATION :
Report the mean of the five warp slippage & weft slippage result directly from the computer software as
extension ( in mm )equivalent to a seam opening of 6 mm.
RESULTS :
Give the result in the unit of extension ( in mm )and give a condition at the seam ( if needed) .
prepare five test sample with the Template size 35x10 cm from the both warp and weft direction in the different
places of the fabric .
Fold the each sample 100mm from one end with the parallel to the short direction of fabric.
Sew a seam about 13 mm from the crease of fold using the sewing thread .
Make 14 ± 1/2 plain lock stitches.
Cut 6 mm each seamed sample then left 7 mm from the sewn seam line cutting through both layers of the fabric.
Set the machine at seam slippage FOR ASTM D 434 , Set the jaw face size 25 mm ,Put the customer details and
forward it .
Test the 5 weft direction ( warp over weft ) sample in the machine first then 5 warp direction ( weft over warp ) sample
simultaneously.
Clamp the unseamed portion of the sample first then seamed portion of the test sample.
Set the sample in the machine & Select start button then clamp the upper jaw through F2 button and clamp the lower
jaw through F3 button , Finally select F9 button to start and get the results.
To continue this process select F9 button again.
Repeat this procedure with the rest test samples .
After completing the testing save the results and go to Last option by the F8 button to view the results
EVALUATION :
Report the mean of the five warp slippage & weft slippage result directly from the computer software as load /
force equivalent to a seam opening of 6.4 mm.
RESULTS :
Give the result in the unit of force and give a condition at the seam ( if needed) .
prepare five test sample with the Template size 35x10 cm from the both warp and weft direction in the different places
of the fabric .
Fold the each sample 100mm from one end with the parallel to the short direction of fabric.
Sew a seam about 20mm from the crease of fold using the sewing thread .
Make 11 plain lock stitches. Here is no need to cut the seamed portion.
Set the machine at seam slippage FOR ASTM D 1683 ,Set the jaw face size 25 mm , Put the customer details and
forward it .
Test the 5 weft direction ( warp over weft ) sample in the machine first then 5 warp direction ( weft over warp ) sample
simultaneously.
Clamp the unseamed portion of the sample first then seamed portion of the test sample.
Set the sample in the machine & Select start button then clamp the upper jaw through F2 button and clamp the lower
jaw through F3 button , Finally select F9 button to start and get the results.
To continue this process select F9 button again.
Repeat this procedure with the rest test samples .
After completing the testing save the results and go to Last option by the F8 button to view the results.
EVALUATION :
Report the mean of the five warp slippage & weft slippage result directly from the computer software as load /
force equivalent to a seam opening of 6 mm.
RESULTS :
Give the result in the unit of force and give a condition at the seam ( if needed) .
SEAM strength
PURPOSE : Determination of maximum force to seam rupture of the fabric.
prepare five test sample with the Template size 25 x10 cm from the both warp and weft direction in the different places
of the fabric .
Fold the each sample 125 mm from one end with the parallel to the short direction of fabric.
Sew a seam about 20mm from the crease of fold using the sewing thread .
Make 11 plain lock stitches.
Cut 8 mm each seamed sample then left 12mm from the sewn seam line cutting through both layers of the fabric.
Set the machine at fabric tensile FOR ISO 13935-2 , Set the jaw face size 25 mm ,Put the customer details and
forward it .
Test the 5 weft direction( warp over weft ) sample in the machine first then 5 warp direction
( weft over warp ) sample simultaneously .
Set the sample in the machine & Select start button then clamp the upper jaw through F2 button and clamp the lower
jaw through F3 button ,clamp the seamed sample in the jaws ensuring that the seam is midway between and parallel to
the jaws, Finally select F9 button to start and get the results.
To continue this process select F9 button again.
Repeat this procedure with the rest test samples .
After completing the testing save the results and go to Last option by the F8 button to view the results
EVALUATION :
Report the mean of the five warp slippage & weft slippage result directly from the computer software as load /
force equivalent to a seam opening of 6 mm.
RESULTS :
Give the result in the unit of force and give a condition at the seam ( if needed) .
TENSILE strength
PURPOSE : Determination of maximum force and elongation at maximum force to rupture of the fabric.
prepare five test sample with the Template size 300x60 mm from the both warp and weft direction in the different
places of the fabric
Then threads shall be removed in approximately equal number or 5 mm from both of the long edges of the samples
until the width of the sample become 50 mm , length should be remain 300 mm.
Set the machine at fabric tensile FOR ISO 13934-1 (200 mm 100 mm/min) ,Set the jaw face size 75 mm, Put the
customer details and forward it .
Test the 5 warp direction sample in the machine first then 5 weft direction sample simultaneously .
Set the sample in the machine & Select start button then clamp the upper jaw through F2 button and clamp the lower
jaw through F3 button , Finally select F9 button to start and get the results.
To continue this process select F9 button again.
Repeat this procedure with the rest test samples .
After completing the testing save the results and go to Last option by the F8 button to view the results.
EVALUATION :
Report the mean of the five warp tensile strength & weft tensile strength result directly from the computer
software as load / force equivalent to a tensile strength .
RESULTS :
Give the result in the unit of force .
prepare five test sample with the Template size 150x100 mm from the both warp and weft direction in the different
places of the fabric .
Set the machine at fabric tensile FOR ISO 13934-2 (75 mm) ,Set the jaw face size 25 mm ,Put the customer details
and forward it .
Test the 5 warp direction sample in the machine first then 5 weft direction sample simultaneously .
Set the sample in the machine & Select start button then clamp the upper jaw through F2 button and clamp the lower
jaw through F3 button , Finally select F9 button to start and get the results.
To continue this process select F9 button again.
Repeat this procedure with the rest test samples .
After completing the testing save the results and go to Last option by the F8 button to view the warp tensile strength &
weft tensile strength results .
EVALUATION :
Report the mean of the five warp tensile strength & weft tensile strength result directly from the computer
software as load / force equivalent to a tensile strength .
RESULTS :
Give the result in the unit of force .
TEar strength
PURPOSE :Determination of the force required to propagate a single-rip tear starting from a cut in a
fabric.
METHOD NO. : ISO 13937-1 , ASTM D 1424 .
RESULTS :
Give the result in the unit of force
EVALUATION :
Report the mean of five warp tear strength & weft tear strength result directly from the Elmatear digital tear
tester machine as load / force equivalent to a tear strength .
RESULTS :
Give the result in the unit of force .
pilling test
PURPOSE : Determination of the resistance to pilling and surface change of textile fabrics.
EVALUATION :
Record the grading for each specimen and mean the results by the standard Visual assessment .
Grade Description
5 No Pilling
4 Slight Pilling
3 Moderate Pilling
2 Severe Pilling
1 Very Severe Pilling
RESULTS :
Give the result in Number.
PROCEDURE ( ISO 12945-2 ) :
prepare three sets of test specimen with 142 mm diameter by the pilling cutter for the specimen holder .
Set the three pins (different placed) at the point C (corner side ) separately in the Martindale pilling tester.
Mount one test specimen in the pilling table by the clamping ring above the specimen and mount the other test
specimen in the specimen holder body by an Auxiliary device .
Then mount the specimen holder on the pilling table by an Additional loading weight (12 kPa) .
Set the revolution in the machine is to be needed for different types of fabrics.
Then to select start option in the machine to continue the process.
After complete the revolution remove the test specimens from the machine .
Then put the test samples into the Pilling Assessment viewer for getting the results.
EVALUATION :
Record the grading for each specimen and mean the results by the standard Visual assessment .
Grade Description
5 No Pilling
4 Slight Pilling
3 Moderate Pilling
2 Severe Pilling
1 Very Severe Pilling
RESULTS :
Give the result in Number.
PROCEDURE ( ASTM D 3512 ) :
prepare three test specimen 105X105 mm on the bias at an approximate 45° angle to the warp & weft direction .
Cut & Revel the both sides of the test sample up to 5 mm with leaving the fringe .
Seal the edges of the test samples up to 3 mm on the face of the fabric with adhesive .
Hang the test fabrics at least 2 hour on the racks until dry.
Bring the test specimen and cork liners to moisture equilibrium in the atmosphere.
Place three specimen and 25 mg of 6 mm gray-dyed cotton fiber into the test chamber .
Place the cover on the chamber & Set the timer for 30 min.
Turn the motor switch to “ON” & push the START button and start the airflow.
Clean off the excess cotton fiber that is not actually entangled in pills by the Vacuum cleaner.
After complete the revolution remove the test specimens from the machine .
Then put the test samples into the Pilling Assessment viewer for getting the results.
EVALUATION :
Record the grading for each specimen and mean the results by the standard Visual assessment .
“Grade”
Grade” “Description”
5 No Pilling
4 Slight Pilling
3 Moderate Pilling
2 Severe Pilling
1 Very Severe Pilling
RESULTS :
Give the result in Number.
EVALUATION :
Record the condition whether threads of the test fabrics break or not .
RESULTS :
Give the result in OK or NOT OK ..
p h MEASUREMENT
PURPOSE : Determination of pH of the water-extract from wet processed textile fabrics .
EVALUATION :
Measure the three solutions pH .
If two measurement are nearly equal between the three measurement of solutions then take the average of two
measurement .
If three measurement are unequal then do the procedure again in the same way .
RESULTS :
Give the results in Numerical value .
PROCEDURE ( AATCC 81 ) :
Use a 10±0.1 gram specimen from the fabric and cut the sample into small pieces ( less than 5mm size ).
Boil 250 ml distilled water in the beaker at a moderate rate for 10 min .
After 10 min Put the sample into the beaker which containing boiled distilled water .
Cover the beaker with a watch glass and boil it for an additional 10 min .
Allow to cool the water in the beaker at room temperature.
Collect the water solution (only) from the beaker into the 100 ml beaker.
Then before measurement of pH we have to calibrate the pH meter for getting accurate reading .
Then put the 100 ml beaker in the pH meter and press the READ button in the machine before the measurement of pH
of the solution & finally get the result .
EVALUATION :
Measure the pH of the solution from the digital screen of the pH meter .
RESULTS :
Give the result in Numerical value .
skewness measurement
EVALUATION :
2( AC – BD ) x 100
Skewness ( % ) = ( AC + BD )
EVALUATION :
Rate the tested sample with comparing the Standard AATCC 3-D smoothness appearance replicas by viewing the
sample in fluorescent light .
SA Replicas
Grade Description
SA- 5 Very smooth ,pressed ,finished appearance
SA- 4 Smooth , finished appearance
SA- 3.5 Fairly Smooth ,non-pressed appearance
SA- 3 Mussed , non-pressed appearance
SA- 2 Rumpled , obviously wrinkled appearance
SA- 1 Crumpled , creased and severely wrinkled appearance
EVALUATION :
Report the type of fiber comparing with the Photomicrographs of common textile fiber .