Glassflake Ltd. announced that Sibelco UK Ltd., an international supplier of industrial minerals, has taken a 25.1 % shareholding in Glassflake. Both businesses will work together to develop glass flake technology. Glassflake Ltd., Leeds, UK, manufactures functional products globally to the coatings, pigments and polymer sectors. The products consist of micro-sized glass flakes, ranging from 7 microns in thickness to 100 nanometers. Sibelco supplies specialty minerals for a wide range of applications including industrial and marine coatings, powder coatings, wood and decorative paints.