Why Is The Binding Double Coil Called Yo Coil?

The double coil is a two-strand steel coil with preset dimensions and specifications. The common materials are divided into spray steel ring and plastic coil.

Usually, a round hole or a square hole is punched on the left or the top of the printed matter. After the YO double coil is passed through and the YO ring binding machine is pressed and fixed, the entire binding process is completed.

When selecting a coil, it is necessary to pay attention to its quality. Some coils may cause cracks during binding because the surface plating plastic layer is not strong enough.

If the coil is too thin, problems such as unstable binding may occur.

After the coil is locked, you cannot add more pages unless the coil is removed. The cost of double-coil binding is higher than that of a single coil. Of course, the binding effect is better and more durable.

With a two-coil bound book, you can completely flatten any page when reading, making it easy to read and query.

Books with a thickness of 30mm, such as tool books, technical manuals, recipes (recipes), VIS manuals, and architectural drawings, are best suited for this type of binding.