COATING METHOD AND APPARATUS FOR A MINERAL WOOL PIPE SECTION FOR THERMAL INSULATION OF PIPES

摘要

The invention relates to a coating method and apparatus for a pipe section (1) of mineral wool. A coating material (3) is bonded to an external surface of the pipe section by supplying the coating material into a nip (N) between the coatable pipe section and a heated roll (2), in which nip the coating material (3) squeezes against an external surface (8) of the pipe section (1) and a bonding agent contained in the coating material melts applying itself to the pipe section's surface. The coating material (3) is squeezed with the heated roll (2), whose external surface is formed with ribs (6) extending in a longitudinal direction of the roll and enabling the coating material to sink in within the pipe section.