Many pipeline operators have experienced problems with tapes. For these people, the word "tape" brings a very negative reaction. In North America, operators have largely banished tapes and shrink sleeves. Bob Nee invented Polyguard RD-6®. When Bob took early retirement from Surfcote/3M/Bedero Price in 1988 to rejoin Polyguard, the first thing he said was; "Tape is on the way out." This news was not greeted with applause, since most of what Polyguard sold was tape. But we couldn't argue when Bob showed us a study by the Pipeline Research Council (1) showing that gas transmission users were condemning solid film backed coatings due to corrosion and SCC failures from cathodic shielding, soil stress, and related problems.
In the RD-6® invention, Bob replaced solid film backing with high strength geotextile backing. The result is not a tape in the traditional pipeline coating sense.
RD-6® Is NOT a Tape (or is it?)
Our purpose with this page is to address those who have lumped RD-6® into the dreaded “tape” category. The intent of the RD-6® invention was to eliminate the problems being caused by stretchable, solid film backings while maintaining the benefits of tape application.
RD-6® is Not a tape because...
- RD-6® has a woven geotextile backing, proven not to shield cathodic protection currents
- RD-6® is far stronger, less stretchable than solid polyethylene backings. Soil stress vulnerability is much lower
RD-6® is a Tape, because...
- RD-6® is a long strip with coating compound would on a roll
- RD-6® has all the traditional tape advantages of easy, rapid installation