What technique is used to repair plastic panels in collision repair?

Plastic welding or heat staking is the appropriate technique used to repair plastic panels in collision repair because it allows for a strong, durable bond to be created between the damaged plastic pieces. This method involves the use of heat to melt the edges of the plastic, allowing them to fuse together upon cooling. This provides a seamless repair that restores the integrity and appearance of the panel, making it particularly effective for structural and aesthetic repairs.

In contrast, bonding with adhesive tapes may offer a temporary solution but does not create the same level of strength as welding and can lead to future issues with durability. Replacing with new plastic parts might be an option, but it can be more costly and time-consuming compared to a well-executed repair. Finally, screwing together damaged pieces does not effectively re-establish the structural integrity of the plastic panel and can result in a less aesthetically pleasing appearance with potential failure at the junction points. Thus, plastic welding is the preferred method in collision repair for plastic panels.