Fabric is inspected to determine its acceptability from a quality viewpoint.
there are various fabric inspection system such as-
1. 4 point System
2. 10 point System
3. 2.5 point System
4. Dallas System
4 Point System : The 4 point system, also called the American Apparel Manufactures Association (AAMA) point grading system for determining fabric quality, is widly used by producers of apparel fabrics and is endorsed by the (AAMA) as well as the American Society for Quality Control (ASQC).The 4 point system assigns 1,2,3,4 penalty points according to the size and significance of the defects. No more than 4 penalty points can be assigned for any single defect. Defect can be either length or width direction the system remains the same, only major defects are considered. No penalty points are assigned to minor defects.
Fabric Defects point values based on the following :
length of defect. Points Allotted
1. 0-3 Inch 01
2. Over 3-6 Inch. 02
3. Over 6-9 Inch. 03
4. Over 9 Inch. 04
Holes and Openings:
1. 1 or less. 02 points
2. Over 1 Inch. 04 points
Calculation and Result:
1. If fabric rolls contains less than 40 point per 100 yard square are considered "first" quality and as acceptance criteria.
2. If fabric rolls contains more than 40 point per 100 yard square are considered "second".
Example :
A fabric roll 130 yard long 45 inch wide contains the following defects ---
6 defects upto 3 inch. =6 x 1= 6
5 defects upto 3 inch less 6 inch=5 x 2= 10
2 defects upto 6 inch less 9 inch=2 x 3= 6
1 defects over 9 inch. =1 x 4= 4
1 hole over 1 inch dimensions =1 x 4= 4
Total defects points -----------=30
Therefore,
Points per 100 yard square =
Total defects point x 36 inch
---------------------------------------------------------------x100
Fabric width x total length yard inspected
30 x 36
= ----------- x 100
130 x 45
= 18.4
Defect point per 100 yard square. So, The roll is Accepted.
