How coil binding works
A continuous plastic spiral is threaded through a row of punched holes along the binding edge. Because the coil is a single continuous loop rather than a series of separate rings, the pages turn smoothly and keep turning past the point where most bindings stop.
The coil itself comes in a wide range of colors and sizes, so it can either disappear into the design or become part of it.
When coil is the right choice
- The book will be used while the reader is doing something else
- It needs to lay completely flat, or fold back on itself
- It will be handled repeatedly rather than read once
- You want the binding color to work with the cover
- The page count is higher than saddle stitch comfortably handles
Coil is not the right choice if you need a printed spine, or if the book is going on a shelf where the title has to be readable from the side. Perfect binding does both of those things and coil does neither.
What people print coil bound
Training and operations manuals
Procedures someone follows at a workstation. The book stays open at the right page without a hand on it.
Workbooks and course materials
Anything written in. Coil folds back so the reader can write on a single page without fighting the binding.
Cookbooks and recipe collections
Open on a counter, splashed on, propped against something. Coil handles that better than any other binding.
Field and reference guides
Used standing up, outdoors, or one-handed. The fold-back matters more here than the shelf look.
Directories and schedules
Flipped through constantly, left open on a desk.
How coil compares to the other three
We bind four ways in-house. This is the short version of what separates them.
| Feature | Coil | Wire-O | Perfect bound | Saddle stitch |
|---|---|---|---|---|
| Lays flat | Yes | Yes | No | Mostly |
| Pages rotate 360° | Yes | Yes | No | No |
| Printable spine | No | No | Yes | No |
| Binding color options | Wide range | Several | Not applicable | Not applicable |
| Shelf appearance | Functional | Professional | Book-like | Light |
| Pages can be added later | No | No | No | No |
| Best suited to | Manuals, workbooks, cookbooks | Reports, proposals, presentations | Catalogs, books, manuals | Programs, newsletters, short catalogs |
Scroll the table sideways to compare all four methods.
Our booklet binding page goes into more detail on all four methods.Â
Specifications
- Binding: continuous plastic coil, threaded through punched holes
- Opening: lays flat, pages rotate 360 degrees
- Coil colors: a wide range available
- Coil sizes: matched to the thickness of the book
- Covers: printed card stock, with thin clear plastic front and black back cover optionsÂ
- Sizes: standard and custom
- Printing: full color, one side or both
Tell us the page count, the finished size, and how the book will be used, and we will spec the rest.
Printed and bound in San Diego
Everything is produced in our Sorrento Valley shop. Printing and bindery are in the same building, which means no handoff between a printer and a separate finisher, and no freight time in the middle of your schedule.
Free local delivery across San Diego County. We print and ship coil bound books nationally as well, with shipping quoted alongside the job.
Everyone is always helpful. Printing jobs are done very fast and packaged well and shipped quickly.
Pearl, P3 Designs — Coil-bound books, folded flyers
What happens after you send us the job
- You send the artwork, page count and finished size. If you are not sure which binding suits the job, describe how it will be used and we will tell you.
- We come back with a spec and a price. Stock, coil color, cover treatment, quantity breaks, and a realistic date.
- You approve a proof. Booklet jobs get a page-turning proof that shows how the pages flow, so you can check page order before anything runs.
- We print, bind and deliver. Printing and bindery under one roof, then pickup, local delivery or shipping.
Frequently asked questions
What is coil binding?
Coil binding uses a continuous plastic spiral threaded through punched holes along the edge of the book. The coil holds the pages together while letting them rotate a full 360 degrees, so the book can be folded back on itself and laid flat on a surface.
Does a coil bound book lay flat?
Yes. That is the main reason people choose it. Pages open flat and rotate all the way around, which matters when someone needs both hands free while following the page.
What colors does the coil come in?
Black is the standard and the one most often used, but coils are available in many colors and sizes, so the binding can match your cover or stay neutral.
Can you add pages to a coil bound book later?
No. The coil is threaded through the punched holes during production and is not designed to be reopened. If your content changes regularly, let us know and we will talk through the options.
Is coil binding better than wire binding?
Neither is better outright. Coil uses a plastic spiral and comes in more colors and sizes. Wire-O uses a metal double loop and reads as more formal on a desk. Both lay flat and rotate 360 degrees. Choose on appearance and durability rather than function.
Can I print on the spine of a coil bound book?
No. A coil binding has no flat spine to print on. If you need a printed spine, perfect binding is the format that gives you one.
What size can a coil bound book be?
We produce coil bound books in a range of sizes, including custom sizes. Send us the finished size you need and we will confirm what works.
Related pages
- Booklet Binding: all four methods compared in detail.Â
- Wire Bound Books: metal double loop, also lays flat, a more formal look.Â
- Perfect Bound Books: glued flat spine you can print on.Â
- Booklet Printing: the full range of booklet formats and finishes.Â
- File Preparation: what to send and what we check before printing.Â
Ready to price a coil bound job?
Send us the page count, the finished size and the quantity. If you have a sample of something similar, even better.
