Fabric inspection is a key step in the textile and clothing manufacturing process. Before producing clothes, it is necessary to conduct a professional test on the fabric.
Fabric inspection is a key step in the textile and clothing manufacturing process, which aims to ensure that fabrics meet the standards required by quality and market regulations before being used in textile and clothing manufacturing. The main purpose of
fabric inspection is to prevent clothing quality problems caused by
fabric defects, thereby ensuring the smooth progress of clothing production.
The steps of the
4 point system for fabric inspection are as follows:
1. Sampling procedure
Sampling quantity: square root of total yardage multiplied by eight
Sampling requirements: The selection of rolls to be inspected is completely random. The textile mill needs to show the cargo packing list to the inspector when at least 80% of the rolls in a batch of cloth have been packed. The inspector will select the rolls to be inspected. Once the inspector selects the rolls to be inspected, no adjustments shall be made to the number of rolls to be inspected or the number of rolls selected for inspection. During the inspection, no yardage of cloth shall be cut from any roll except for recording and checking the color.
2. Inspection score:
Calculation of score: In principle, the scores of each roll of cloth are added up after inspection. Then the grade is assessed according to the acceptance level. The calculation formula is: A = (total score x 3600) / (number of inspected yards x width of fabric that can be cut) = score per 100 square yards
Acceptance level of different types of fabrics: Different types of fabrics are divided into the following four categories:
All-man-made fabrics, polyester/nylon/acetate fiber products : 40 points or less per 100 square yards is grade A, and 40 points or more is grade B.
Cotton and linen 50 points or less per 100 linear yards is grade A, and 50 points or more is grade B.
Wool fabrics 60 points or less per 100 linear yards is grade A, and 60 points or more is grade B.
Silk 70 points or less per 100 linear yards is grade A, and 70 points or more is grade B.
3. Defect scoring criteria
Scoring principle：The maximum score for any single defect is four points. No matter how many defects there are in the cloth, the defect score for each linear yard shall not exceed four points.
Scoring criteria: Scoring based on the length of the defect, 1 point for less than 1 inch, 2 points for 1 inch to 3 inches, 3 points for 3 inches to 6 inches, and 4 points for more than 6 inches.
4. Inspection method
Checkpoints: Including roll length and width, weft skew and bow weft, fabric weight, etc. Each time the goods are inspected, at least two samples are weighed from different rolls to ensure the weight is accurate
Packing precautions: The thickness and strength of the paper tube should be moderate, and the inner diameter and length should be appropriate to avoid being too loose or too tight.
Four point system fabric inspection to ensure that defects are within acceptable range.
