What is 4 point system fabric inspection?
Introduction
As the domestic textile industry becomes more and more developed, the amount of textile raw materials and finished products exported overseas is also increasing, and the demand for textile fabric testing is also increasing. Today I will introduce the 4-point system fabric inspection method to you.
Details
Fabric inspection, also known as fabric checking, is a comprehensive fabric evaluation that identifies fabric defects. Fabric inspection is done to understand the quality of standard aspects such as color, density, print, weight, size, etc. before mass production. Fabric inspection covers all stages of production, including intermediate and final stages. "Perching" is another term for fabric inspection.
Textile quality control is the process of checking if the materials produced meet the buyer's requirements. This usually includes the quality of the finished product as well as the yarn and fabric material. Fabric inspection is a visual inspection step in addition to performance standards; it helps to detect irregularities and flaws. Fabrics are generally graded based on quality level, fabric weight, shade color, number of flaws, and more. In addition to ensuring the quality of garments, fabric inspection can also help manufacturing companies reduce scrap accumulation and improve production efficiency.
Implementing The 4 Point System in Fabric Inspection
The 4 Point System is a widely recognized and effective method for evaluating fabric defects during inspections. It provides a practical way to classify and quantify defects based on their size and severity. Here’s how to implement the 4 Point System fabric inspection:
1. Basics:
The basic principle of the 4-point system. In this system, defects are mainly divided into four categories:
Category 1: Severe defects that make the fabric unusable.
Category 2: Major defects that affect performance.
Category 3: Minor defects.
Category 4: Negligible defects that are almost invisible.
2.Tolerance Levels:
Establish individual tolerance levels for defect categories based on industry standards.
3. Sampling:
Select representative fabrics for inspection according to the systematic sampling. Ensure that the sample size is statistically significant.
4. Inspection process:
Defects are divided into four categories according to their size and impact.
5. Calculate defect density:
The total number of defects divided by the total inspection area gives the defect density value. Defect density is mainly used to evaluate the overall quality of the fabric.
6. Compare with tolerance level:
Compare the defect density with the established tolerance level of the defect category. If it exceeds, it is judged as unqualified.
7. Report:
Record the defect type, quantity and category in the inspection report. Attach sample photos.
8. Corrective measures:
Communicate with the manufacturer to inspect the defects found in the fabric and take corrective measures.
4 point defect rating formula:
Defect rating = (total number of level 1 defects * 4) + (total number of level 2 defects * 3) + (total number of level 3 defects * 2) + (total number of level 4 defects * 1)
The higher the inspection quality of the fabric, the lower the rating.
Textile quality control is the process of checking if the materials produced meet the buyer's requirements. This usually includes the quality of the finished product as well as the yarn and fabric material. Fabric inspection is a visual inspection step in addition to performance standards; it helps to detect irregularities and flaws. Fabrics are generally graded based on quality level, fabric weight, shade color, number of flaws, and more. In addition to ensuring the quality of garments, fabric inspection can also help manufacturing companies reduce scrap accumulation and improve production efficiency.
Implementing The 4 Point System in Fabric Inspection
The 4 Point System is a widely recognized and effective method for evaluating fabric defects during inspections. It provides a practical way to classify and quantify defects based on their size and severity. Here’s how to implement the 4 Point System fabric inspection:
1. Basics:
The basic principle of the 4-point system. In this system, defects are mainly divided into four categories:
Category 1: Severe defects that make the fabric unusable.
Category 2: Major defects that affect performance.
Category 3: Minor defects.
Category 4: Negligible defects that are almost invisible.
2.Tolerance Levels:
Establish individual tolerance levels for defect categories based on industry standards.
3. Sampling:
Select representative fabrics for inspection according to the systematic sampling. Ensure that the sample size is statistically significant.
4. Inspection process:
Defects are divided into four categories according to their size and impact.
5. Calculate defect density:
The total number of defects divided by the total inspection area gives the defect density value. Defect density is mainly used to evaluate the overall quality of the fabric.
6. Compare with tolerance level:
Compare the defect density with the established tolerance level of the defect category. If it exceeds, it is judged as unqualified.
7. Report:
Record the defect type, quantity and category in the inspection report. Attach sample photos.
8. Corrective measures:
Communicate with the manufacturer to inspect the defects found in the fabric and take corrective measures.
4 point defect rating formula:
Defect rating = (total number of level 1 defects * 4) + (total number of level 2 defects * 3) + (total number of level 3 defects * 2) + (total number of level 4 defects * 1)
The higher the inspection quality of the fabric, the lower the rating.
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