July 2006 - The ABC’s of Library Binding

A “library bound” book isn’t just another hardcover book. To withstand the rigors of years of library use, a library-bound volume must meet the rigid requirements of the Library Binding Institute (LBI). Since the LBI manual is not light reading, we have distilled its essential elements to create this quick project planning guide.

Purpose of LBI Standards
Here’s the LBI definition for the purpose of its standards:

“This standard applies to the binding of books and periodicals using methods and materials that result in volumes that are sturdy, durable, and flexible enough to withstand the rigors of library use.”

To achieve these essential requirements, Muscle Bound uses a reinforced side-sewing process to create the book block. In the side sewing process, threads are sewn through the full bulk of the book block – including endsheets – 3/16” from the spine. To help you get the most out of your library bound books, here are a few additional recommendations:

Proper Endsheet Strength - LBI requirements call for white or colored endsheet stock that is a minimum of 80lb. offset. Although a thicker endsheet stock may be specified, the added stiffness can compromise cover flexibility. Muscle Bound produces folded endsheets in-house that include cambric reinforcement, which meets LBI standards of 58lbs./inch of tensile strength.

All About Board – Sufficient board weight is also a key component of a strong library-bound book. At Muscle Bound, we use 90pt. board that meets LBI standards for thickness, bursting strength and flexural properties, resulting in a finished product that resists warping and improves durability.

The Muscle Bound Advantage
Muscle Bound Bindery is a recognized leader in library binding – our logo says it all! Our entire hardcover binding process, from our super-strong case making to our reinforced side sewing, exceeds every LBI standard for strong, durable library binding. To learn more about our library binding services, contact Muscle Bound today.