One of the biggest challenges for any adhesive is a substrate with Low Surface Energy (LSE). What’s the solution? Introducing two new highperformance double-sided tapes designed specifically for hard-to-bond substrates: tesa® 4950 and tesa® 74515.
Combining performance, flexibility, and long-term reliability with consultancy and technical support, a partnership with tesa works harder to simplify application, improve process efficiency, and keep every project on track.
tesa’s new double-sided LSE tapes excel in key performance areas such as resistance to constant shear stress and elevated temperatures. Reliable, durable, and made to stand the test of time, they deliver performance that is on par with — and often exceeds — that of leading competitor tapes.
For working with vehicles, home appliances, electronic devices, and other designs using low surface energy substrates, the performance of tesa’s new LSE tapes is validated through rigorous testing, ensuring consistent quality and reliability.
Modern designs often incorporate plastics, composites, and other substrates with low surface energy — a challenge for bonding. Traditional adhesive solutions like liquid glues, screws, or rivets compromise flexibility and aesthetics. tesa introduces a range of high-performance doublesided tapes, specifically for LSE substrates: tesa® 4950, a 100µm PET tape, and tesa® 74515, a 125µm transfer tape.
Our cutting-edge LSE tapes have thin, conformable designs and use no additional chemicals — created for high-performance today and in the future
The new LSE range of tapes do not require a primer for application, thus simplifying the bonding process. Adaptable for different applications, they re also attractively priced, compared to alternative LSE tapes on the market
tesa® 74515 is highly conformable and features a tackified acrylic adhesive tailored for hard-to-bond substrates. It offers excellent peel adhesion, strong initial tack, and high shear strength. Its conformability enables seamless application of various die-cut shapes and sizes, making it ideal for complex and demanding geometries.
tesa® 4950 uses the same tailored tackified acrylic adhesive as tesa® 74515 and provides excellent dimensional stability. This makes it particularly well-suited for precise die-cutting and efficient handling in converting processes. Its robust construction ensures reliable performance even under elevated temperatures and sustained load conditions.
| tesa® 74515 - 125µm LSE transfer tape | tesa® 4950 - 100µm LSE d/s PET tape | |
|---|---|---|
| Liner | PV04 | white PE-coated liner PV 12 | transparent PET liner | PV04 | white PE-coated liner PV 20 | branded brown glassine paper liner |
| Backing | No backing | 90% recycled PET (post-consumer recycled, PCR) |
| Selected benefits | Surface-conforming: the thick adhesive layer accommodates slight surface unevenness for improved contact. | Dimensional Stability: PET backing ensures clean handling and precise die-cuts |
| Technical compliance certification | • In accordance with UL standard 969. UL file: MH 18055 • Low VOC – measured according to VDA 278 analysis | • In accordance with UL standard 969. UL file: MH 18055 • Low VOC – measured according to VDA 278 analysis |
| Primer | None required | None required |
| Thermal resistance | Withstands short-term exposure up to 200°C and long-term exposure up to 100°C | Withstands short-term exposure up to 200°C and long-term exposure up to 100°C |
| Adhesion to values | • PC (initial) 10 N/cm • PE (initial) 5.5 N/cm • PP (initial) 10 N/cm • Steel (initial) 9 N/cm | • PC (initial) 7 N/cm • PE (initial) 5 N/cm • PP (initial) 6.6 N/cm • Steel (initial) 7.5 N/cm |
