Additional Info
Liner variants:
- PV04: white PE-coated liner (126µm; 126 g/m²)
- PV20: branded brown glassine paper (69μm; 80g/m²)
tesa® 4950 - LSE Filmic Mounting Tape
100µm LSE double-sided transparent PET film tape
Sustainable Aspects
- 90% PCR PET in the backing
- Responsibly sourced paper liner (certified)
- LSE-Optimized Adhesion: Bonds reliably to PP, PE, and EPDM—no primer needed.
- High Shear Strength: Holds strong under stress and heat for long-term durability.
- Dimensional Stability: PET backing ensures clean handling and precise die-cuts.
Product description
tesa® 4950 is a high-performance, double-sided transparent PET film tape designed for reliable bonding on low surface energy (LSE) substrates. With a total thickness of 100µm and a 12µm PET backing made from 90% post-consumer recycled content, it combines sustainability with technical excellence. The tackified acrylic adhesive ensures strong initial tack and superior shear strength, even under demanding environmental conditions.
Product details and specifications
Product Features
- LSE-Optimized Adhesion: Bonds reliably to PP, PE, and EPDM—no primer needed.
- High Shear Strength: Holds strong under stress and heat for long-term durability.
- Dimensional Stability: PET backing ensures clean handling and precise die-cuts.
- Thermal Resistance: Withstands short-term exposure up to 200°C.
- UL Certification: In accordance with UL standard 969. UL file: MH 18055
Application Fields
- Versatile bonding solution for a wide range of demanding industrial applications
- Enables primerless adhesion to low surface energy (LSE) substrates such as PP, PE, and EPDM
- Ideal for long-term mounting on hard-to-bond materials, including gaskets and molded components
- For industrial assembly where clean aesthetics, dimensional stability, and transparent bonding are critical
Sustainable Aspects
- 90% PCR PET in the backing
- Responsibly sourced paper liner (certified)
| Adhesive Type | tackified acrylic |
|---|---|
| Backing material | Post consumer recycled PET |
| Color | transparent |
| Color of liner | brown/blue logo |
| Thickness of liner | 69 µm |
| Total thickness | 100 |
| Weight of liner | 80 g/m² |
| Elongation at break | 50 % |
|---|---|
| Tensile strength | 20 |
| Temperature resistance short term | 200 °C |
| Softener resistance | very good |
| Static shear resistance at 40°C | very good |
| Static shear resistance at 23°C | very good |
| Temperature resistance long term | 100 °C |
| Tack | very good |
| Chemical Resistance | good |
| Humidity resistance | very good |
| Temperature resistance min. | -40 °C |
| Ageing resistance (UV) | good |
| Static shear resistance at 70°C | very good |
| Adhesion to PC (initial) | 7 N/cm |
|---|---|
| Adhesion to PE (initial) | 5 N/cm |
| Adhesion to PP (initial) | 6.6 N/cm |
| Adhesion to Steel (initial) | 7.5 N/cm |
tesa® products prove their impressive quality day in, day out in demanding conditions and are regularly subjected to strict controls. All technical information and data above mentioned are provided to the best of our knowledge on the basis of our practical experience. They shall be considered as average values and are not appropriate for a specification. Therefore tesa SE can make no warranties, expressed or implied, including, but not limited to any implied warranty of merchantability or fitness for a particular purpose. The user is responsible for determining whether the tesa® product is fit for a particular purpose and suitable for the user’s method of application. If you are in any doubt, our technical staff will be glad to support you.
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Last updated on Jun 27, 2025