Thermal and Mechanical Performance of Multilayer PET + Matte PP Labels
For labeling applications in automotive, aerospace, and industrial equipment, it's essential that labels maintain their integrity under stress. That’s why the engineering of multilayer PET PP film, especially combining PET laser film with matte black PP, is critical for meeting rigorous thermal and mechanical demands.
Why Thermal and Mechanical Resistance Matter
Labels in harsh environments must resist:
- Prolonged heat exposure (100–150°C)
- Abrasion and mechanical shock
- Moisture, oils, and corrosive agents
- UV radiation and color fading
A dual-layer film architecture offers layered protection that single materials cannot match.
PET Laser Film: High-Temp, High-Visibility
The PET layer contributes:
- Thermal endurance up to 150°C+
- Dimensional stability during heating and cooling cycles
- Excellent print registration for tiny text and barcodes
- Gloss or holographic coating for durability and visibility
It serves as a protective shell and printable surface in one.
Matte Black PP: The Tough, Silent Partner
Matte black PP ensures:
- Flex resistance and tear strength
- Low reflectivity to avoid scanning issues
- Strong adhesion to surfaces like metal and plastic
- Compatibility with solvent-free adhesive systems
Its dark surface enables white or metallic contrast print for excellent legibility.
Performance Testing Summary
| Test Category | Results for PET + PP Multilayer Film |
|---|
| Heat Resistance | Stable up to 150°C without shrinkage or curl |
| Peel Strength | Consistently high adhesion over plastic and metal |
| Scuff Resistance | Maintains integrity after 50+ rub cycles |
| Chemical Resistance | Resists alcohol, engine oil, and mild acids |
| UV Stability | Fades <5% after 500 hours of accelerated aging |
Industries Benefiting from These Properties
- Automotive: Fuse box labels, airbag warning stickers
- Electronics: Heat sink and component ID tags
- Industrial Machinery: Durable warning and compliance labels
- Outdoor Equipment: Moisture- and UV-resistant branded tags
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