Συγκόλληση με κόλλα για ηλεκτρονικά – πώς λειτουργεί;

Adhesive bonding does not affect or damage the materials and is lightweight, which is an important factor in the automotive industry, for example. Vehicles need to become lighter so they consume less fuel and less electrical power. Bonding is a crucial aspect in electric vehicles (EVs), with approximately 30 kilograms of adhesives used per vehicle. In comparison, traditional combustion engine vehicles typically use between 15 and 18 kilograms of adhesives. These adhesives are essential for potting and bonding chips and sensors, stiffening the chassis, and securing the interior linings.

Bonding is a technique for joining two or more parts using an adhesive substance. Hybrid processes, in which bonding is supplemented by a further operation such as sealing or heat dissipation, are becoming increasingly important in addition to standard bonding applications. They offer many advantages including simpler component handling and weight savings, as mentioned above, which is why they are supplementing or replacing more and more classic joining techniques such as welding and bolting in the industrial sector.

Στις βιομηχανικές εφαρμογές, οι κουκκίδες ή οι γραμμές κόλλας πρέπει συχνά να εφαρμόζονται σε ακριβώς καθορισμένες θέσεις πάνω ή μέσα στα εξαρτήματα που πρόκειται να συνδεθούν. Για το λόγο αυτό, συνήθως χρησιμοποιούνται πολύ ιξώδεις κόλλες 1K ή 2K βασισμένες σε πολυουρεθάνη, σιλικόνη ή εποξείδια, καθώς δεν τρέχουν. Ανάλογα με την εφαρμογή και τις ιδιότητες συγκόλλησης που πρέπει να επιτευχθούν, κόλλες χαμηλού ιξώδους μπορεί επίσης να είναι τα υλικά επιλογής.

The adhesive and the parts bonded can be affected by a wide variety of factors during use. Mechanical influences, such as tensile, shear and peeling forces, can have a sudden, continuous, static or dynamic effect. Environmental influences, notable temperature, media and radiation, can also play a role. The challenge for the joining is in particular the interaction of these influences, so it is crucially important to conduct an in-depth analysis in advance. What do we need for components to be permanently joined?

If the geometry of the materials to be joined is correct, all that remains is to select the appropriate dispensing system technology. Suitable material preparation, feed and dispensing systems are required to ensure that the bonds are durable, especially in safety-relevant applications. The plant must be adapted to suit the properties of the adhesive, such as its reactivity, and appropriate health & safety measures must be taken.

If you’re looking for the perfect solution for your specific problem simply ask our experts. Here’s a tip: Laboratory tests during the tendering phase ensure that the solution is ideally adapted to the customer’s specific requirements. To sum up, bonding is one of the most efficient and productive joining techniques.