What is meant by 4-point system?
By Daniel Johnston
What is meant by 4-point system?
The four-point system derives its name from the basic grading rule that a maximum of four penalty points can be assessed for any single defect and that no linear meter can be assigned more than four points regardless of the number of defects within that piece. Processed Fabric Inspection Under 4 – point system.
How do you use the 4-point system?
4 Point system for fabric inspection is widely used in apparel industry for fabric quality inspection. To use this system you have to know following things….Size of Defect.
| Size of Defect | Penalty Points |
|---|---|
| Defects > 9 inches | 4 |
| Holes and openings(largest dimension) | |
| 1 inch or less | 2 |
| Over 1 inch | 4 |
What is 4-point and 10 point system?
10-point inspection is one of the methods to analyze the fabric quality same as 4-point inspection. 10 Point Fabric Inspection System. The process is similar to 4-point inspection- In 10-point inspection, the only length of the fault and point varies. Penalty points are assigned according to size of defects.
What is 10 point system in fabric inspection?
10 point system In this system, the fabric fault are identified with points on the basis of the scale of 10, i.e. the maximum defect point is 10. According to this system, If the total defect points per 100 yards of fabric are 100 or more the fabric will be rejected.
How do you calculate the 4-point system in fabric inspection?
Calculation method of total penalty points for total defects found in a fabric roll or than….Fabric Inspection | Four Point System.
| Inches ( ˝ ) | (mm) | Points |
|---|---|---|
| From 0 > 3″ length/width | Up to 75mm | point |
| From 3.1″ > 6″ length/width | 75mm > 150mm | points |
| From 6.1″ > 9″ length/width | 150mm > 230mm | points |
| More than 9″ length/width | More than 230mm | points |
How is fabric shrinkage calculated?
To calculate shrinkage, cut your fabric into a square, record the measurements before washing in the field marked before wash. [(17 – 20) / 20] x 100 = 15% increase. [(20 – 17) / 20] x 100 = 15% decrease.
How do you calculate the 4 point system in fabric inspection?
How is Dhu calculated?
To measure DHU of any process, one needs to record a number of total pieces checked and the number of total defects is detected in the inspected garments. It is a number of defects, not the defective garments. One defective garment may have more than one defects.
What is the meaning of fabric?
Fabric is cloth or other material produced by weaving together cotton, nylon, wool, silk, or other threads. Fabrics are used for making things such as clothes, curtains, and sheets. The fabric of a society or system is its basic structure, with all the customs and beliefs that make it work successfully.
What does an AQL of 2.5 mean?
If the buyer only mentions AQL 2.5, it means that the buyer accepts all kind of defects: critical, major or minor, to be present in the manufactured goods at a level of 2.5% of the total order quantity. It is highly recommended to define an acceptable quality limit for each defect type: critical, major, minor.
What is CSV in fabric?
CSV (Centre to Selvedge variation)– CSV stands for centre to selvedge variation. For solid fabrics Shade of the fabric varies between centre and selvedge. This variation is called Centre to selvedge variation(image 3).
What is fabric inspection system?
Fabric Inspection is systematic observation of fabrics to decide whether it meets: Client’s specification in terms of count/construction, color, design, measurement specifications, hand/feel and other specific quality parameters laid down by the clients.
