| 摘要 |
PURPOSE:To carry out water stopping application, e.g. a flange part of a water pipe, with good anticorrosive and water stopping properties and operability, by covering a body with a sealing material having a specific compression deformability and winding a pressure tape around the sealing material. CONSTITUTION:A body to be processed, e.g. a flange part of a water pipe, is covered with a sealing material having >=4% compression deformability at -5 deg.C and <=40% compression deformability at 30 deg.C, and a pressure tape, e.g. vinyl chloride tape, is wound around the sealing material. The above- mentioned sealing material consists of preferably a high polymer having >=30,000 molecular weight, e.g. butyl rubber, low-molecular weight softener having <800 molecular weight, e.g. paraffinic oil, scaly filler, e.g. talc, etc. The sealing material is preferably precovered with an unvulcanized rubber sheet and then a pressure tape is wound around the sealing material for improving the water stopping and anticorrosive properties.
|
