Brugg Rohr Ag Holding

Jürgen Kress

Christian Dambowy

Alfred Oeschger

Stefan Kirsch

Antonino Chiavello

Michael Meyer

Schaller Werner

Thermally insulated pipes including thermal insulation, outer jacket and medium pipes, wherein the thermal insulation includes a foam having a density of 30-80 kg/m3, the outer jacket includes a thermoplastic plastic () having a modulus of 300-1400 MPa and having a corrugated shape. The invention further relates to the use as well as the manufacture of such tubes. Furthermore, the invention relates to composite materials, their use for thermal insulation, as well as their manufacture.

Thermally insulated pipe

The invention relates to a thermally insulated conduit pipe, comprising at least one medium pipe, at least one thermal insulation arranged around the medium pipe, and at least one outer jacket arranged around the thermal insulation, wherein the outer jacket possibly comprises a barrier made of plastic, and wherein the thermal insulation comprises a foam, the cell gas of which contains at least 10 vol % HFOs. Such conduit pipe has good insulating behavior, good environmental balance, and is easily producible.

Thermally insulated medium pipes having HFO-containing cell gas

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Oberwil-Lieli, Switzerland

Jürgen Kress