There are more than a few microfiber towel edge types. They all have trade offs - Benefits and downsides.
- Overlock Stitch
- Edgeless/Ultrasonic Cut
- Hidden/rolled edge
The most common type of edge is the Overlock stitch, it is what you find on most cleaning towels. It is made with a polyester thread that is sewn around ther towel edge hundreds of times. It has good durability and helps keep the fabric from fraying, but can cause scratching on fine surfaces.
Edge banding or piping uses a thin strip of fabric which is wrapped around the edge and sewn into place. Most edge banding is made from 100% polyester which can scratch and isn't absorbent. Higher quality cloths can use microfiber edge banding, which is absorbent and more gentle.
Edgeless towels are ultrasonic cut which finishes the edge without stitching or banding. The edge is cut with a sharp knife blade that vibrates at a high frequency, and generates minimal heat (but enough to seal the edge and help prevent freeing). Edgeless towels are preferred by most detailers because it is less likely to cause damage to delicate surfaces.
The Hidden Edge is an Autofiber towel design which tucks the edge inside of the towel. Primary used on towels made in a two-ply construction. It provides the benefits of the ultrasonic cut edgeless design, but works well for heavier towels and is more durable.
All of the different edge types have benefits and trade-offs. At Autofiber we have matched the optimal edge types with the product and the task that the towel is designed for. Try the different ones out and see for yourself!