Process for making a mineral wool tube insulator bowl and tube insulator bowl

摘要

The invention relates to a method of manufacturing a pipe section of mineral wool, said method comprising the use of an uncured mat of mineral wool, from which is sawn off a run of thin sheet, which is then cut to a length matching the desired wall thickness of a section to be manufactured and which is wound around a core for a sandwich type cylinder, and next the core, and the cylinder of mineral wool around it, are placed in a mould and cured. The method comprises interposing between layers of mineral wool a material (3) better in terms of heat insulation in granular form prior to winding a sheet (1) around a core (2) and/or during the ongoing winding process. The invention relates also to a pipe section, wherein between superimposed layers of mineral wool is provided a material (3), which is in granular form and which is better in terms of heat insulation.