Spiral Binding and Coil Binding are interchangeable terms for the same book binding method. This popular method joins the pages and cover of a book using a durable plastic coil. The coil is inserted and twisted through small holes punched along the spinal edge of the book's cover and pages. 

One of the primary benefits of a spiral bound book is that the pages can be opened a full 360 degrees (cover to cover). This allows an open book to fold back upon itself and yet still remain flat, so it stays open for easy reference and yet takes up minimal room on a desk or table. 

Spiral binding is an excellent choice for reports, sales presentations, proposals, directories, cookbooks, instruction manuals and maintenance guides. Atlases and travel guides are also commonly spiral bound because they are easier to manage when traveling.

Benefits of Spiral Binding

Books open 360 degrees (cover to cover) which allows them to fold flat and lie flat for easier reference.

The turn-around time is generally quite fast.

Can be used for very short production runs…for example, 200 books.

Coils come in a variety of diameters to accommodate books of varying thicknesses.

It allows for books to be made in a wide range of sizes – small like a pocket guide or large like a travel atlas.

Plastic coils resist distortion and are available in assorted colors to complement the book's cover.

This method is excellent for wall calendars and planners because it allows them to hang completely flat against the wall.

This binding style works well with index tabs.