When winding slit tapes, in many cases they are wound onto a narrow reel the width of the tape to prevent damaging the product. However, this results in a small amount of material being wound on the reel and subsequently decreasing efficiency in the following process. Traversing the material with a guide can put more material on the package, but can result in distortion, bending, or wrinkles in the product. winding. The EFT bobbin traverse winder can solve these problems and wind flat materials onto the bobbin. It traverses the bobbin assembly instead of the tape itself.