Kalaliima

Kalaliima is a Finnish term that translates to "fish glue." It is a natural adhesive derived from the swim bladders of fish, a byproduct of the fishing industry. Historically, fish glue was a widely used adhesive due to its natural origin and strong bonding properties.

The production of kalaliima involves extracting collagen from the fish swim bladders. This collagen is then processed, often by cooking and drying, to create a gelatinous substance that can be dissolved in water to form the adhesive. The resulting glue is typically a clear to amber-colored liquid or solid that becomes sticky when heated or dissolved.

Kalaliima possesses several desirable characteristics. It is known for its strong binding capabilities, making it suitable for various applications. It is also water-soluble, which can be an advantage for cleanup and for certain artistic techniques. Historically, it was used in bookbinding, woodworking, and as a binder for pigments in paints and varnishes. In some traditional crafts and conservation efforts, kalaliima is still valued for its authenticity and natural properties. While synthetic glues have become more common, kalaliima remains a niche product appreciated for its historical significance and natural composition.