| 摘要 |
A sealing method comprises introducing a moving stream of curable material 30 into an opening 29, such as a pipe joint, and curing a portion of the material flowing back out of the opening 29 to form a cured layer 31 of curable material. The cured layer 31 restricts or prevents a further portion of the curable material 30 from flowing back out of the opening 29. Further curable material 30 can then be introduced into the opening 29, and the cured layer 31 will direct the flow of material further in and around the opening 29. The curable material can be introduced into the opening from a nozzle in the apparatus, and can be cured via the application of an electromagnetic radiation light source, such as ultra-violet light. The curable material can be introduced into the opening 29 at a plurality of locations either in turn or simultaneously via multiple nozzles, and can be cured by the light source at the plurality of locations either in turn or via simultaneously via multiple light source. |
