It’s the most popular method in the fabric industry for fabric inspection. The four-point check method is used to determine whether a fabric passes or fails the quality control test. This process requires you to check the fabric from top to bottom, front to back and side to side.
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. Defects can be either length or width direction, the system remains the same. The final purpose is to find out the defects of the fabric in per 100 square yards.
The following are some of the basic steps involved in this type of inspection:
1) Defect Classification –
Ideally the designer will have a vast idea on the nature of fabric defects. He should define a criteria for giving penalty points based on defects and defect length. Whenever errors are recognized during fabric inspection under the 4 points system, defects must be assigned a number of points depending on the severity or length.
2) Understand the inspection process –
While performing the fabric inspection, there are a few guidelines that must be followed. For example, the cloth traveling through the frame must be at an angle of between 45 and 60 degrees to the inspector. The inspection machine’s fabric speed cannot exceed 15 yards per minute. Knitted fabrics, for example, need to be weighed against specified standards, etc.
3) Evaluate total points & define acceptance level –
After inspecting the fabric, the inspector will add up the defect points and then use the following formula to determine the rate of points per 100 yards – Final score per 100 yards = Total defect score×100 / [inspected(Length(m)/0.914) ×(Width(m)/0.914)]
The inspector is responsible for determining the maximum number of flaws per 100 yards, which is 20 to 40 points per 100..
4) Inspection Register & Data Analytics –
It is crucial to record and analyze data in an accessible format. Excel is typically utilised.
At Acme Creation, we believe it’s crucial to check your fabric for any kind of flaws because they could lower its quality or even interfere with subsequent production. To supply the highest-quality fabric in India as well as internationally, we test each fabric at numerous levels as quality is of paramount importance to us!