Production of pipes insulated with foams and apparatus for...

Details Production of pipes insulated with foams and apparatus for... Production of pipes insulated with foams and apparatus for...

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 59/147 (2006.01) B29C 44/32 (2006.01) B29C 44/38 (2006.01)

Patent

CA 2229502

A process for producing pipes insulated with foams comprises a) providing, between an inner carrier pipe and an outer pipe arranged parallel thereto, a holder which is provided with at least one aperture and is mounted so that it can be moved axially and positions the carrier pipe in the outer pipe and b) introducing into the vacant space between the two pipes, via the aperture(s) in the holder, a mixture for the preparation of foams, where b1) during the introduction of the mixture, the holder moves in an axial direction with respect to the outer pipe and the carrier pipe, then c) after the mixture is charged, it is reacted to give the foam and d) the holder and, if desired, the outer pipe are removed.

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