ROERSKAOLELEMENT OCH SAETT ATT FRAMSTAELLA The same is

摘要

A pipe insulation sleeve is made of mineral wool bound by a thermosetting binder and comprising an outer insulating layer consisting of a slab of mineral wool hardened throughout, the outer layer having a plurality of radial slits taken out from its inwards-turned surface, which slits run axially and are essentially closed and originally of V-shaped form, and an inner layer of mineral wool bonded to the outer layer by a thermosetting binder and of such thickness and density that it is in itself rigid and at the same time imparts rigidity to said outer layer. The insulating sleeves according to the invention are particularly advantageous when the inner diameter is 300 mm or greater and the thickness is more than 100 mm. A method and arrangement for production of the pipe insulation sleeve is also described.