Edge Bonding and Corner Bonding
Edge bondings (or corner bondings) are adhesives designed to contribute to the stability of sensitive and/or higher components, capacitors or battery cells on printed circuit boards. In addition, these edge or corner bonds ensure the reduction of stresses in sensitive connections, even under high shock and vibration loads and many fatigue cycles. They offer high adhesive strength as well as very good temperature and chemical resistance.
Most edge bonders from Panacol are stable UV-curing adhesives which, depending on the adhesive, also thermally post-cure in shadow zones. Due to their low curing temperatures, they are also suitable for temperature-sensitive components. After curing, they exhibit low shrinkage behavior.
On request, these adhesives are also available in red or fluorescent coloring to ensure optimum quality and application control: The red coloring or fluorescence makes the quality of the bonding on each individual component easily visible and controllable, even in mass production. The red color in particular stands out visually from the mostly green PCBs.
Adhesives stabilize SMDs (top) and battery cells (bottom image) on printed circuit boards
In the following table you will find a selection of Panacol adhesives that are suitable for edge bonding or corner bonding. Other products or customized solutions are available on request.
To download the technical datasheets (TDS) please click on the adhesive name.
| Corner Bonder | Viscosity [mPas] | Base | Curing* | Properties |
|---|---|---|---|---|
| Structalit® 5705 | 7,000-12,000 | epoxy |
thermal |
Black color, yellow fluorescent, reworkable above 150°C, jettable, low in halogens, very suitable as edge bonding adhesive |
| Vitralit® 1671 | 9,000-14,000 | epoxy |
UV secondary heat cure |
Stable frame compound high ion purity electronic grade adhesive high temperature conductivity low water absorption UL94 HB test passed |
| Vitralit® 4731 VT | 4,000-8,000 | acrylate |
UV VIS |
dry surface after curing flexible and tear-proof excellent adhesion to many plastics |
| Vitralit® 6104 VT | 8,000-17,000 (Rheometer, 25°C, 10s^-1) | acrylate |
UV secondary heat cure |
Very high adhesion to metals and sintered materials ideal for bonding large components on circuit boards (corner bonding) |
*UV = 320 - 390 nm, VIS = 405 nm