Standard Operating Procedure (SOP) for Inspection of Trims, Accessories, and Fabrics in Apparel Manufacturing
Purpose:
This Standard Operating Procedure (SOP) defines the inspection methodology and quality assurance protocols for all trims, accessories, and fabrics received in the apparel manufacturing process. The objective is to ensure all incoming materials conform to predefined quality standards, functional requirements, and customer specifications prior to use in production.
Section I: Inspection Procedure for Trims & Accessories
1. Visual Quality Inspection
Conduct a random 10% visual inspection on all incoming trims and accessories.
Verify physical integrity, workmanship, color consistency, branding accuracy, and general appearance.
2. Nickel Content Compliance
All metal items containing nickel must be supported with a valid Nickel Test Report from an approved laboratory.
Ensure compliance with REACH and other international safety standards for metal content in trims.
3. Interlining Strength Test
Perform adhesion and strength tests on interlinings both pre- and post-wash to evaluate performance and bonding stability.
Reject any interlining that shows delamination, distortion, or failure to retain integrity after washing.
4. Attachment Strength Evaluation
Test the mechanical strength of attached accessories such as:
Buttons
Bows
Snap fasteners
Metal badges
Conduct a pull test to ensure accessories are securely affixed and withstand reasonable wear-and-tear conditions.
5. Elastic Performance Testing
Evaluate all elastic components for:
Stretch and recovery performance
Expiry or shelf-life status based on manufacturer’s documentation and production date
Ensure the elasticity meets the technical specifications defined for the product.
6. Care Label Durability Assessment
During the size set approval stage, conduct a wash test to ensure:
Labels remain legible and securely attached
No deterioration occurs throughout the expected product lifecycle
Document results for compliance verification.
7. Metal Detection Protocol
Subject a minimum of 10% of all metal accessories to metal detection screening upon receipt.
Ensure absence of foreign metal contaminants and adherence to factory safety protocols.
Section II: Fabric Inspection Procedure
1. Sampling and Batch Selection
Select 10% of total fabric rolls, with a minimum of three rolls per batch, for quality inspection.
Sampling must be representative of the entire batch to ensure accurate assessment.
2. Color Consistency and Hand Feel Verification
Compare fabric color to approved lab dips or master samples under controlled lighting conditions.
Assess hand feel for conformity with product requirements.
Record observations in FO/CO/QA/109/01 Fabric Inspection Report.
3. Fabric Width and GSM Testing
Measure fabric width and GSM (grams per square meter) according to approved specifications.
Document results in the FO/CO/QA/36/01 Color Continuity & GSM Check Report.
4. Fabric Defect Grading (4-Point System)
Conduct a full fabric inspection using the 4-point system, identifying and grading all visual defects.
Capture all data in FO/CO/QA/109/01 Fabric Inspection Report and communicate rejections to the sourcing team.
5. Spirality, Bowing, and Skewness Analysis
Test for structural fabric deformations (e.g., spirality, bowing, skew) as per internal procedures.
Acceptable tolerance levels must align with customer-defined standards.
Document findings under FO/CO/QA/109/01 Fabric Inspection Report.
6. Wash Program Compliance Testing (If Applicable)
Perform a pillowcase wash test simulating actual garment washing conditions.
Assess the following:
Dimensional stability (shrinkage)
Twisting or torque
Color bleeding/transfer using color blanket test
Prepare and submit FO/CO/QA/21/01 Shrinkage & Twisting Check Report.
Retain tested fabrics in a designated storage area until officially handed over to the cutting department.
Conclusion:
This SOP ensures that all trims, accessories, and fabrics meet the required quality benchmarks before entering the production cycle. Systematic adherence to these procedures reduces material-related defects, enhances product consistency, and aligns with buyer compliance standards. This document must be followed by all relevant QA, sourcing, and production teams to maintain operational excellence and uphold customer satisfaction.
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