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1. WO1983003132 - PROCEDE D'ISOLATION DE PARTIES DE TUYAUX

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]
Claims :

1. A method of insulating pipe details, such as pipe branches and bends, c h a r a c t e r i z e d in that the pipe detail .'(15, 16) is enclosed in a mould (7) whose inner surfaces are located at a distance from the outer walls of the pipe detail and whose ends are by means of a sealing element (11, 12) sealed against the pipe detail (15, 16), that a thermoplastic o material is fed into the mould which is heated and put in motion so that the thermoplastic material forms a continuous layer (17. 18) along the inner surfaces of the mould, that the mould upon solidification of the continuous thermoplastic layer is removed and the space 5 between said layer (17, 18) and the pipe detail (15, 16) is filled with an insulating material (19).
2. A method according to claim 1, c h a r a c t e r i z e d in that the sealing elements located in the ends of the moulds comprise end gables (11, 12) 0 of the mould provided with recesses (13) for the pipe detail (15, 16).
3. A method according to claim 1, c h a r a c t e r i z e d in that the insulating material (19) is fed to the space between the solidified thermoplastic 5 layer (17, 18) and the pipe detail (15, 16) through a hole (20) made in the sheath surface of said layer.
4. A method according to claim 3, c h a r a c t e r i z e d in that the insulating material (19) comprises a liquid foaming material.
0 5. A method according to claim 1, c h a r a c t e r i z e d in that the pipe detail (15, 16) is cooled during formation of the thermoplastic layer.
6. A method according to claim 5, c h a r a c t e r i z e d in that a cooling medium is fed into the 5 pipe detail.