What is the tool used to remove hot-melt seaming tape from a carpet backing?

The tool specifically designed for removing hot-melt seaming tape from a carpet backing is the seaming iron. This tool is particularly effective for this purpose because it provides the necessary heat to soften the adhesive used in the hot-melt tape, allowing for easier removal. When the adhesive is heated, it loses its grip on the carpet fibers, making it simpler to lift the tape without damaging the carpet backing.

In contrast, while a utility knife or carpet knife could potentially be used to cut through materials, they do not have the capability to soften the adhesive. Additionally, a screwdriver is not suitable for this task, as it is not designed for cutting or applying heat to materials, thus making it ineffective in the context of removing hot-melt tape. The seaming iron's function of applying precise heat is what distinguishes it as the appropriate tool for this specific task.