Visual inspection for fabric quality control
0 likes1,925 views
The document outlines the four-point inspection system for fabric quality control, focusing on essential parameters such as color, defects, and measurements to ensure compliance with client specifications. It details the inspection process, environment, and procedures for identifying and recording fabric faults, including the criteria for scoring defects. Additionally, it defines acceptable defect limits per yardage and outlines various types of fabric defects to monitor.
Visual inspection for fabric quality control
- 1. Fabric Visual Inspection Presented by: Md. Azmir Latif M.Tech (Fabric Technology), DIU PGD in TM, BUTex 4 point inspection system Visual Inspection Fabric Faults
- 2. Fabric Quality Control 1. Visual Inspection 2. Fabric Shrinkage 3. Shade Segregation 4. Fabric Properties
- 3. Visual Inspection (4 point 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. The visual inspection will cover: Compare to sample on color and hand feel Fabric fault Fabric length Fabric width Mass per unit area (GSM) Running shade Moisture Packaging
- 4. Fabric Inspection Procedure Fabric inspection is done in suitable and safe environment with enough ventilation and proper lighting. Fabric must be marked by dye lot number, roll number, length and width. Cool White light is appropriate above viewing area. Back light can be used as and when needed and the inspection frame must be between 45 - 60 degree angles. Fabric speed on inspection machine must not be more than 15 yards
- 5. Fabric inspector should mark the location of all defects and record the defects on the inspection report using the 4 (four) point system as follows: Defects length 0 to 3 ̋ Inches = 1 point. Defects length 3 ̋ to 6 ̋ Inches = 2 point. Defects length 6 ̋ to 9 ̋ Inches = 3 point. Defects length 9 ̋ Inches to over= 4 point. Hole in Fabric (any size) = 4 point. The maximum penalty for any running yard (36 ̋ x fabric width) must be not more than 4 points. Defect lengths in both warp and weft received equal points and more than 2 joins are not allowed in a fabric roll. The average point value per shipment should not exceed 20 points per 100 square yards. Individual rolls exceeding 28 points per 100 square yards must be rejected. Defects per 100 SQ Yards calculated by the following formula : Total defect points X 36" X 100 = Points /100 SQ Yards. Total inspected YDS Actual Fabric Width --------
- 6. Fabric Defects Foreign Yarn/Fly yarn/Contamination
- 13. Fabric Defects Spot Water mark
- 15. Fabric Defects Lycra Out Lycra damage (like missing)
- 17. Fabric Defects Miss Yarn (Must replace during cut panel check)
- 18. Fabric Defects Stop mark/Starting mark.(replace during check)