Properties of Adhesive Layers

One-component reactive adhesives have to be distinguished from the physically setting adhesives described in Chapter 5, which generally occur only in the form of one component, namely, the already finished polymer, for example, in the case of hot-melt adhesives, dispersion adhesives and solvent-based adhesives. They are called one-component adhesives. 

The applied liquid adhesive develops into the adhesive layer according to the chemical reactions or physical processes described in Sections 2.2.1 and 2.2.2 as well as in Chapter 3. So for reasons of preciseness, we talk of 

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At the most sophisticated level the theory of adhesion ought to explain the macroscopic properties of adhesive layers in terms of molecular structure and behavior under mechanical stress... 

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