Polyurethane

What is polyurethane?
Polyurethane, commonly known as ”PUR”, is generated by mixing two liquids, polyol and isocyanate. The carefully calculated reaction process initiated by mixing the two liquids is called foaming. The result of this process is a viscous, foamy casting material which quickly transforms into PUR in a solid form. The PUR can be produced with various levels of rigidity and density.

PIR block foam (polyisocyanurate) is a modified PUR system with a relatively low flammability and high resistance to increased temperatures. Dan-Iso PIR, Class 1 block foam complies with ”Class 1” Fire Test (British Standard 476: Part 7: 1997).

Casting insulation shells
When the liquids are injected into special moulds, it is possible to cast insulation shells. Dan-Iso’s main product is insulation shells for pipe joints in the district heating and industrial sectors. In addition to ordinary insulation shells, Dan-Iso shells are available in a number of different shapes and types, e.g. shells with a lining made of mineral wool or flexible foam, or shells with a facing of e.g. folio or napa leather. Our competence lies in knowing the full scope of variations, enabling us to make the optimum use of the material. Dan-Iso has more than 25 years of experience with the casting of insulation shells.
Rigid PUR is one of the most efficient insulation materials. The insulating value is more than 30% better than that of rock wool, mineral wool and EPS insulation.

What are PUR shells used for?
In addition to insulation of district heating pipes, PUR is applied for technical insulation, insulation in the refrigeration industry and the oil/offshore sector as well as for industrial insulation.

Polyurethane properties:

Insulation capacity
High strength/weight ratio
Torsional stability
Chemical resistance