High-speed hand welding of flexible PVC with a plastic strip
A flexible plastic strip is used instead of a round rod primarily for tank linings arid similar applications.
Plastic strips come in different shapes such as the flat strip or the corner “V’’ strip, and they are generally
supplied in roll form. Unlike the rod, where several passes are usually required, only one pass is
necessary with a strip.
The technique of welding with a strip is similar to that of welding with round rod, with the following
exceptions:
1. The strip must be pre-cut into the length required, with an addition of about one to two inches for
trimming.
2. Start the weld by tamping with the broad shoe of the especially designed high-speed tool on the top of
the first inch of strip, in the direction of the weld. Do not drag the welder for the first inch, until the first inch