Pipe joint renovation - has packer to inject sealing mass into inaccessible pipe joints esp. in sewage system

摘要

To renovate the joint sections of inaccessible pipe systems, esp. sewage systems, a packing is formed in a mixer into a sealing mass. The material is composed of at least two components, and is injected by the mixer under pressure into the joint zone to be renovated, and in the pipe section to be treated. It gives a retained pressure on the separate components for a mass to be injected which, after hardening, applies a durable pressure on its environment through increase of its vol.. Pref. the sealing mass has a polyurethane and a hardener for the rapid polymerisation of the polyurethane material. USE/ADVANTAGE - The method is for the renovation of inaccessible pipe joints. The system gives an effective action at the pipe joints, which can be monitored, with a long-lasting effect.