How to judge the quality of stainless steel plate protective film

Quality Assessment Criteria for Stainless Steel Plate Protective Film

• Appearance Inspection
  Surface should be flat and smooth without wrinkles, bubbles, impurities or scratches. Edges must be neatly cut without burrs.
• Viscosity Test
  Initial tack test using medical tape; peel test with weight suspension to confirm non-slip performance during usage period.
• Thickness Uniformity
  Measure multiple points with calipers to ensure minimal thickness variation for consistent protective performance.
• Weather Resistance
  Expose to extreme temperatures/humidity environments to verify no deformation, detachment or discoloration occurs.
• Environmental Certification
  Require valid certifications (e.g. SGS) confirming no harmful chemical release or substrate contamination.
• Peeling Evaluation
  Assess for adhesive residue and surface damage after removal - must leave stainless steel surface clean and undamaged.