Jonathan Martens & Jo Siebert | Tesa: How can you get the strength of a liquid structural adhesive with the clean, precise application of a tape?
00:05:29 - 00:06:09
Other snippets from this talk
Summary of the clip:
How can you get the strength of a liquid structural adhesive with the clean, precise application of a tape?
Tesa has developed a novel hybrid adhesive system that combines the immediate tack and handling benefits of a pressure-sensitive adhesive (PSA) with the ultimate bond strength of a liquid structural adhesive. This technology is designed for challenging bonding applications in electronics, such as securing a smartphone housing, where both precision and durability are critical. The adhesive is supplied as a pre-formed, die-cut tape, eliminating the mess and process control challenges associated with dispensing liquid glues.
The process involves a two-stage curing mechanism. Initially, the PSA component of the tape allows for precise placement and immediate handling of the parts. This is followed by a curing step using a specific wavelength of light, which activates the structural adhesive component within the tape. This light-curing process initiates a chemical reaction that cross-links the adhesive, transforming it into a high-strength structural bond.
A key advantage of this system is the "open time" it provides. After the initial light cure, assemblers have a window of approximately five minutes to complete the final assembly. This process flexibility is crucial in high-volume manufacturing. Once fully cured, the bond achieves performance comparable to traditional liquid structural adhesives, ensuring long-term reliability and drop resistance for the electronic device.
In this short video, you can learn:
* The concept of a hybrid PSA and liquid structural adhesive in a tape format.
* The two-stage process: initial positioning with PSA followed by a light-activated structural cure.
* The practical benefits for electronics assembly, including process control, handling time, and final bond strength.
š **Clip Abstract** This clip details a unique hybrid adhesive tape that combines the ease of a PSA with the performance of a liquid structural glue. The technology uses a light-curing process to create a high-strength structural bond, ideal for demanding electronics assembly.
š Link in comments š
#HybridAdhesive, #LightCuringAdhesive, #StructuralAdhesiveTape, #ElectronicsBonding, #AdvancedMaterials, #ElectronicsAssembly
This is a highlight of the presentation:
Display mounting tapes ā next generation of debonding on demand
More Highlights from the same talk.
00:06:50 - 00:07:31
What if you could easily replace a smartphone battery and apply that same technology to rework expensive automotive displays?
What if you could easily replace a smartphone battery and apply that same technology to rework expensive automotive displays?
Tesa has leveraged its well-known "Powerstrip" consumer technology to create an industrial-grade "Bond & Detach" solution for the electronics industry. This technology, which has already been integrated into approximately 2 billion smartphones, enables the strong, reliable bonding of components like batteries while allowing for clean, easy, and residue-free removal when needed. By simply pulling a tab, the adhesive stretches and detaches, facilitating rapid battery replacement and repair.
The core of this technology lies in a specially engineered viscoelastic adhesive that holds components securely under normal use, including shock and vibration. However, when a specific shear force is applied by pulling the integrated tab, the polymer chains elongate and disentangle at the adhesive interface, causing a controlled debonding without damaging the components or leaving behind sticky residue. This mechanism is a significant enabler for the circular economy in electronics.
Recognizing the value of this reworkability, Tesa has transferred this expertise from high-volume consumer electronics to the automotive sector. The company has developed an automated process for applying these Bond & Detach tapes to next-generation automotive displays. This allows manufacturers to easily rework or replace costly display modules during production or servicing, reducing scrap rates and improving the lifecycle management of advanced automotive interiors.
In this short video, you can learn:
* How consumer "Powerstrip" technology was industrialized for electronics repair.
* The mechanism of controlled debonding for residue-free component removal.
* The strategic application of this technology to enable reworkability in automotive displays.
š **Clip Abstract** This segment explains Tesa's "Bond & Detach" technology, an industrial version of their consumer power strips used for easy smartphone battery replacement. The same principle is now being applied via automated processes to the automotive industry, enabling the rework of next-generation displays.
š Link in comments š
#BondAndDetach, #ViscoelasticAdhesive, #ControlledDebonding, #ElectronicsRework, #CircularEconomyElectronics, #AdvancedElectronicsManufacturing
00:12:08 - 00:12:38
Can you truly rework a modern, optically bonded display without destroying it?
Can you truly rework a modern, optically bonded display without destroying it?
The discussion hones in on a critical challenge in advanced display manufacturing: the reworkability of optically clear adhesives (OCAs). OCAs are essential for laminating the various layers of a display stack (e.g., cover glass to the display panel) to improve optical performance and durability. However, traditional OCAs create a permanent bond, meaning that any defect identified late in the assembly process often results in the entire expensive module being scrapped.
The speaker confirms that the technology for debondable or reworkable OCAs is available within Tesa's development portfolio. This implies the existence of advanced polymer chemistries that can provide the required high optical clarity and strong adhesion during the product's life, but can also be triggered to release on-demand. The key challenge is balancing permanent bonding performance with controlled, clean debonding without damaging the delicate optical films or display components.
While the technology exists, it is not yet a standard, off-the-shelf product. The feasibility and implementation depend heavily on the specific application, including the display materials, size, and the required rework process (e.g., thermal, chemical, or mechanical trigger). This highlights a key area of collaborative development between material suppliers and device manufacturers to create custom solutions for the next generation of repairable, sustainable, and cost-effective displays.
In this short video, you can learn:
* The critical manufacturing need for reworkable Optically Clear Adhesives (OCAs).
* Confirmation that the underlying technology for debondable OCAs exists.
* The importance of application-specific development for implementing these advanced materials.
š **Clip Abstract** This clip addresses the advanced technical challenge of creating debondable Optically Clear Adhesives (OCAs) for display manufacturing. Tesa confirms the technology is available, but emphasizes that it requires custom development for specific applications to enable display reworkability.
š Link in comments š
#ReworkableOCA, #DisplayRework, #OpticalBonding, #AdvancedAdhesives, #FlexibleElectronics, #SustainableElectronics