Fabric Pile Loss
Fabric Pile Loss -To assess the amount of pile loss and weight loss causing visual change. Read about Employee Management System Software Free/ Premium
A prepared sample of fabric is subjected to a tumbling action against a known abrasive pad. Pile loss is then assessed.
- AATCC “ATLAS” Accelerator, Model AB-7 fitted with 108mm S-Shaped rotor with specimen viewer
- Ceramic abrasive lining ring
- Rubber based adhesive
- Method for removing loose fluff, I.e. vacuum cleaner or brush
- Circular cutter 11.28cm in diameter giving a resultant sample area of approximately 100 sq cm.
- Calibrate accelerotor
- Cut two 300mm x 300mm samples
- One sample to have appropriate cleaning treatment (as garment care label using appropriate method
- Cut the following samples:
- Original – four samples, three to test, one kept as original
- After Cleaning – cut three samples for test
- Glue outside of circle with rubber based adhesive. Fray loose shorter threads to a depth of 2-3 mm (woven fabrics).
- Once the adhesive is dry, condition the samples for a minimum of 4 hours at 65 +/- 2% rh and a temperature of 20 +/- 2 degrees C. Testing must also take place in a conditioned environment.
- Number and weigh accurately, both original and cleaned samples. This initial weight is now referred to as ‘X’.
- Fold one sample in half, place it across the top rotor in the accelerotor and close the door.
- Test specimen at appropriate time and speed, initially 3000rpm quickly reducing to 2000rpm after rotor has begun to spin and maintain that speed throughout the test cycle.
Examples as guide:
Velvet 3 mins @ 2000rpm
Corduroy 5 mins @ 2000rpm
Velour 5 mins @ 2000rpm
- Remove specimens from accelerotor
- Remove all loose fibre from both the sample and accelerotor using vacuum cleaner or brush.
- Condition the sample for a further 4 hours, as previously.
- Weigh accurately the tested sample. (This weight is now referred to as ‘Y’)
- Repeat process e. to I. on both original and cleaned samples saving one original sample for comparison.
SAMPLE DISPLAY & GRADING
Use the following formula to calculate the percentage weight loss of each sample (both original and cleaned):
X – Y x 100 = Result X
X = Weight before testing
Y = Weight after testing
Visually assess each sample comparing with the initial appearance to the original untested sample and grade these samples according to the following assessment table:
Grade : Visual Assessment
NO CHANGE : No change in appearance
NEGLIGIBLE :No obvious loss of individual pile tufts and/ or slight negligible narrowing of the cord wale
SLIGHT :Limited small areas of pile loss and/ or slight narrowing of the cord wale
SIGNIFICANT: Considerable pile loss and/or significant narrowing of the cord wale
DISTINCT : Extreme pile loss causing half or more of the base cloth to be visible and/or distinct narrowing of the cord wales
Average percentage weight loss for each set of both original and cleaned samples, quoting ‘original’ or ‘cleaned’ as appropriate.
The visual assessment grades.