FIELD: laminated products or materials.
SUBSTANCE: invention relates to a central heating pipe. Pipe, in particular a central heating pipe, comprises an inner pipe and an inner insulation surrounding the inner pipe, in particular made of polyurethane foam, the inner pipe and the insulation being embedded in a thermoplastic outer pipe, the insulation being provided at the end of the pipe with a barrier polymer, which is an anti-diffusion lacquer layer covalently bonded to the insulation.
EFFECT: invention provides improved thermal insulation properties in the pipes.
7 cl, 2 dwg
