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|1. (WO2017153530) LINER FOR IMPACT RESISTANT GRP PIPES|
|Applicants:||AMIBLU TECHNOLOGY AS
|Inventors:||HAAVALDSEN, Jane Hilary Thatcher
SYVERSEN, Kjell Tony Hoen
|Title:||LINER FOR IMPACT RESISTANT GRP PIPES|
The invention relates to a glass-reinforced plastic pipe liner of improved impact performance comprising layer B) from unsaturated polyester resin, optionally mixed with vinyl ester resin reinforced by non-woven fibres and a layer C) from unsaturated polyester resin, optionally mixed with vinyl ester resin reinforced by chopped fibre strands. At least one of these layers B) or C) comprises colour pigments at 0.2 –5.0 wt%. The invention provides flexible liners for pressure and non-pressure GRP pipes. It improves impact performance of the pipe liner whilst offering also improvements in abrasion resistance, water-jet resistance for high pressure cleaning without liner damage, increased expected lifetime by improved resistance to internal pressure and permits pigmentation of the liner. The invention also encloses a process for producing the glass-reinforced plastic pipe liner.