Important Fabrics Quality testing during production
Fabrics Quality Testing
Fabrics quality have to ensure by fabrics supplier before sending to garments industry. Skew and Distortion test are most important quality test for fabrics; skew and distortion quality especially important for pant( Bottom Garments).
How to control the quality:
The most important quality issue for fabrics is distortion, if the fabrication has the risk of distortion, skew must be control during production.Two tests should be carried out during the production: skew test & distortion test.
Skew Test (ASTM D3882)
We have demonstrated the test during factory visit.The Skew Test is used to find out how many degree of skew need to be adjusted during the skew control. The test is carried out in the grieve state, compare the skew difference between the before wash & after wash. Fabric need to adjust the skew base on the result. The best method for skew test is ASTM D3882.
Distortion Test (AATCC 179)
Sample Preparation for Distortion after 3 washes Test (AATCC 179):
- Lay the sample on a flat surface; make specimens parallel to the selvages to
fabric length direction. Avoid use of the sample area within 6″of the fabric width.
- Take 3 Specimens each from left side, center and right side of full width fabric.
- Mark each 27″ x 24″ (Length x Width) test specimen with three pairs of 18″
benchmarks parallel to the test specimen length and three pairs of 18″ benchmarks
parallel to the test specimen width, each benchmark must be at least 2″ from all test
Standard testing method refer to AATCC 179 at 3 Home Wash or care label washing.
Measurement and Calculation:
- After specimens are conditioned, measure the distance between the opposite
corner diagonally across specimen.
- Subtract the smaller distance from the larger distance and convert the difference
to a percentage of the original before wash diagonal dimension.
Report the twist as a percentage as below:
Subtract difference Distortion %
Less than 1/4″ 1%
Indicate the skew movement direction of warp along fabric length
(Standard Requirement: With Twill Line “WTL” – 4% max or Against Twill Line
“ATL” – 2%).
Repeat procedure 1 to 4 for each specimen and report result in left side, center
and right side separately.
You can find the answer in this article of below question
How to do Fabric Skew test
How to do Fabric Distortion Test