Book Printing Lingo: What is PUR Binding?

The PUR Binding method adds tremendous flexibility and longevity to softcover books

PUR Binding refers to a softcover book binding method that makes use of Polyurethane Reactive (PUR) adhesive.

PUR Binding is a form of perfect binding, where the pages and cover are glued together at the spine and the other three sides of the book are trimmed as needed to give them clean “perfect” edges.

Polyurethane Reactive (PUR) is the most durable book binding glue available. It is far superior to Ethylene Vinyl Acetate (EVA) or any other adhesives used in traditional perfect binding.

The Main Benefits of PUR Binding include…

1) PUR has superior flexibility, which prevents the spine from cracking when the book is opened wide or pressed down flat.

2) Compared to EVA adhesive, PUR offers 40% to 60% better resistance to page pull-out. In fact, it is nearly impossible to pull a page out of a book bound with PUR adhesive.

3) PUR can adhere to a wide variety of substrates, including ink, varnish, recycled paper, mylar, and UV-coated or aqueous-coated stock.

4) PUR’s performance and structural integrity is unaffected by extreme cold or hot environments (-40º to 200º Fahrenheit).

5) Because PUR is so strong and pliable, less adhesive is needed to firmly bind the cover and pages. Less glue means less distortion of the spine’s shape, resulting in a crisp, square appearance…even on thinner books.

Bottom Line: If quality and durability are important to you, always select PUR binding when you have the choice.

If you have any questions about PUR Binding, or have an upcoming PUR book project, give Formax Printing Solutions a call at (314) 434-5500 or (866) 367-6221. Softcover book printing is one of our specialties, so we look forward to assisting you!

Take care!  Keith

About the Author

Keith Beaty is the owner of Formax Printing Solutions in St. Louis, MO. Formax provides a complete array of offset and digital printing services. Specialty areas include full-color printing, all types of softcover books, laminated printing, plus fulfillment and mailing services. If you ever have a printing question or project you would like to discuss, Keith is always happy to help. He can be reached at 314-434-5500 or 866-367-6221. Keith and Formax have been providing worry-free printing and related services for over 30 years.

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