Kleje

Kleje is the Polish plural noun for glue or adhesive substances. In everyday use, it refers to a range of bonding agents that join materials by forming cohesive bonds. Kleje appear in household, workshop, industrial, and laboratory contexts, covering products from simple craft glues to advanced industrial formulations.

Common types of kleje include cyanoacrylates, epoxy resins, polyurethane adhesives, hot-melt glues, and silicone-based adhesives. Cyanoacrylates cure quickly and are suitable for small, fast bonds, while epoxies provide high strength and chemical resistance for structural applications. Polyurethane glues are valued for flexibility and gap-filling capabilities, hot-melt glues offer rapid setting and ease of use, and silicone adhesives excel in high-temperature or moisture-prone environments. Each type varies in setting mechanism, cure time, bond strength, material compatibility, and resistance to moisture, heat, or chemicals.

The term kleje is widely used in Polish technical and consumer language, spanning DIY, construction, packaging, and medical fields. The singular form klej denotes a single adhesive substance, while kleje collectively refer to multiple glues. Proper selection hinges on substrate material, environmental conditions, required strength, and safety considerations, including VOC emission and skin contact.

See also: adhesive, glue, bonding, polymer, epoxy, cyanoacrylate.