Patent ID: 7306693
Filing Date: 2007-12-11
Classification: B29C,F16L

Abstract:
1. Liner conversion apparatus adapted to convert a flexible liner, including a layer of composite material, said composite material comprising thermoplastics material and reinforcing fibres, into a structural member within a duct, comprises a front portion, a central portion and a rear portion, said front portion being adapted to be inserted in said liner, said central portion having heating means on one side of said layer of composite material and said rear portion having consolidation means for forcing said heated layer of composite material towards said duct for consolidation and cooling under pressure to form said structural member, wherein said heating means produces pressurised hot gas, said central portion being so constructed and arranged to force said hot gas under pressure through said layer of composite material to heat said layer, and to provide an air gap on the opposite side of said layer of composite material while heating takes place, said central portion having inner and outer members, one of said inner and outer members having said heating means and the other having support means for providing said air gap, said outer member increasing in diameter from said front portion to said rear portion, and, in use, said layer of composite material being guided on the outside of said outer member.