Klebende

Klebende is a German term derived from kleben, meaning to glue or to stick. As an adjective, klebend describes something that adheres or has a sticky quality; for example, what you would see in phrases like eine klebende Oberfläche or eine klebende Beschichtung. In everyday use, the more common terms for an adhesive substance are Klebstoff, Kleber or Haftmittel. The noun form Klebende is mainly found in technical or older text and is used to refer to adhesive substances, often in the plural.

Overview: Adhesives are materials that bond two surfaces by forming an adhesive layer. They differ from sealants by focusing on bond formation rather than sealing gaps. Adhesives can achieve adhesion through mechanical interlocking, diffusion, adsorption, or chemical reactions between the substrate and adhesive. They are classified by chemical composition and curing mechanism.

Common types: natural adhesives such as animal glue or starch-based glues; synthetic adhesives including epoxies, polyurethanes, acrylics, silicone-based, and hot-melt adhesives. There are also pressure-sensitive adhesives used in tapes and labels. Subtypes vary in curing: room-temperature cure, heat-accelerated cure, two-part systems, and reactive adhesives.

Applications: used in packaging, woodworking, automotive, electronics, textiles, and medicine. In medical contexts, adhesives can be skin-friendly, biodegradable, or bioadhesive, such as fibrin sealants. Important properties include initial tack, peel strength, shear strength, temperature and moisture resistance, and substrate compatibility. Performance can depend on surface preparation and environmental conditions.

Notes: The term Klebende is less commonly used as a standalone noun in modern German; speakers usually refer to adhesives as Klebstoff or Kleber. The concept, however, remains central in materials science, construction, and consumer products.