Bonding is one of the joining methods and offers a variety of benefits in comparison to conventional methods such as welding, soldering, screwing or riveting. It enables all materials that are used in technical applications – such as plastics, metals, and glass – to be connected by an adhesive over a large area without the use of high temperatures. By the use of adhesive bonding the structures and properties of the materials being connected will not be changed in an macroscopic way, so that their various material properties can still be used.
Despite these benefits, bonding still plays only a minor role in the medical technology sector. One reason for this is the lack of knowledge about the aging behavior of bonded composites by exposition of harmful media such as treatment and sterilization. The NMI is involved in this area, performing tests for industrial customers and as part of government-funded research projects.
It is for this purpose that the NMI has built up experience and established methods for the systematic selection and handling of bonding materials and the surface pretreatments. Various testing techniques can be used to establish the mechanical properties of these materials and to test the resistance of bonded composites to harmful media. Many different types of analysis can be used to examine the properties of materials and bonding surfaces.
The NMI works with institutes and companies that use bonding technology for applications such as the formulation of bonding materials, surface treatment (corona pretreatment, low-pressure plasma, sandblasting, etc.), and test methods. We draw on the experience of these institutes and companies to develop customized bonding systems.