Adhesive tapes: how do they work, what should they be able to do, and what can they do?
Considerable lengths of various adhesive tapes are used when sealing buildings. A carpenter can be seen here sticking the interior corners of a window when working on the interior of a fire station.
Adhesive tapes are used as bonding aids in a wide range of applications in the creation of airtight building envelopes. Several hundred metres of tape are often used on a single building! Adhesive tapes have become established as bonding agents for these applications (just as nails are the standard solution for timber structures). They have to fulfil their functions for a number of decades to ensure that the building in question fulfils the standards expected by the energy consultant and by the building client. This article provides an overview of adhesive technology and the key properties of adhesive tapes typically used in construction.Continue reading →
pro clima clients ask – pro clima engineers answer
Adhesion in the area of airtightness and windtightness involves sticking parts together in a strong, permanent manner that would not stick together without the aid of adhesives. These adhesive joints should last as long as the building component itself! As well as offering high adhesive strength, these adhesive joints must also be able to accommodate typical movements in building components in line with the requirements of DIN 4108-7. The surface finish and so-called surface tension both have a decisive influence on the quality of adhesion. In order to stick materials to one another, adhesives are used that stick firmly to the subsurface (adhesion) and, at the same time, have sufficient internal strength (cohesion).
Various forces are at work in adhesive joints: cohesion, which holds the adhesive itself together, and adhesion, which holds the adhesive to the subsurface.