METHOD OF COATING INNER SIDE OF PIPE LINER Russian patent published in 1997 - IPC

Abstract RU 2075687 C1

FIELD: pipe line engineering. SUBSTANCE: multi-layer hose is introduced in a pipe line, the intermediate reinforcing layer of the hose being impregnated with a binder. By pressurizing the hose with a hot fluid it is pressed to the inner side of the pipe line and the binder is solidified. The inner hose is then removed by high- velocity water flow or compressed gas under a pressure of 90-110 atm during 5-15 min. The inner hose is made of thermoplastic film 30-150 micrometers in thick. EFFECT: simplified method. 2 cl, 1 tbl

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RU 2 075 687 C1

Authors

Drejtser V.I.

Beljaev A.D.

Kvaskov A.B.

Saburin S.V.

Klimov N.P.

Dates

1997-03-20—Published

1994-12-28—Filed