Performance Testing of PET PP Laminated Films for Industrial Use
For industries relying on flexible packaging or functional label solutions, verifying the integrity of materials like PET PP laminated film is crucial. The unique combination of PET’s clarity and rigidity with PP’s flexibility and heat-sealability makes PET + PP sticker material a leading choice. However, its adoption in high-demand sectors requires thorough performance validation.
Why Performance Testing Matters
When laminated materials are used in:
- Food packaging
- Electronics
- Personal care
- Logistics labeling
…it is vital that the lamination bond, sealing behavior, print adhesion, and resistance characteristics meet strict standards. Especially when holographic effects are introduced, functionality must not be compromised.
Core Tests for PET PP Laminated Film
| Test Type | Purpose |
|---|
| Peel Strength | Measures bond between PET and PP layers |
| Seal Strength | Assesses heat sealing under various conditions |
| Tensile Strength | Evaluates stretch resistance during labeling/machining |
| Ink Adhesion | Ensures print doesn’t smear or scratch |
| Thermal Shrinkage | Assesses dimensional stability at high temps |
| Barrier Testing | Checks for water vapor or oxygen permeability |
Industry-Standard Protocols
Testing methods include:
- ASTM F88 (seal strength)
- ISO 527 (tensile properties)
- ASTM D3330 (adhesion)
- EN 1186 (food contact compliance for PP layers)
- GB/T standards for Asian export validations
For holographic versions, visual defect inspection (e.g. microcrack, delamination) is also key.
Benefits of Passing Industrial Tests
- Brand reputation: Low failure rates in-market
- Operational efficiency: Faster production, fewer defects
- Consumer safety: Especially for food and pharma use
- Sustainability: Reduced waste from rejections or delamination
Enhancing Film Design Based on Test Results
If PET or PP fails under stress:
- Use stronger adhesives or extrusion lamination
- Optimize film gauge (thickness)
- Modify corona treatment or primer layer
- Choose alternate holographic PET sources with better anchoring
Real-World Example: Electronics Label Durability
A global electronics brand adopted a PET PP laminated label to seal device panels. After:
- 1,000 hours of high-humidity aging
- UV exposure testing
- Drop impact tests
…the PET PP laminated film retained full adhesion and legibility—outperforming earlier PVC-based materials.
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