How can we keep tape from being displaced at the joints during placing and vibrating? It is discouraging to have an otherwise good job messed up by wandering and wrinkled tape lines.
Care must be taken during vibration not to touch the tapes, but poorly bonded tapes may be displaced even if they are not touched by the vibrator. One way of holding the tapes more tightly in position is by applying a gum adhesive over the surface of the tape after it has been put in place.