Perfect binding is a strong, economical binding solution. A wide range of text and cover stocks are available for binding. We utilize PUR adhesive as our gluing solution with perfect binding. PUR glue offers superior strength, while also retaining its flexibility after curing, making it an excellent choice for books where durability and longevity is a concern. Contact us for an estimate for your next perfect bound project.
Advantages of PUR Adhesive
Polyurethane Reactive, also called PUR, is a polyurethane adhesive which allows for lay flat binding. PUR is the strongest, most flexible and versatile binding adhesive available. The page pull strength of a PUR-bound book is more than 2 1/2 times that of a standard perfect-bound book using EVA (ethylene vinyl acetate) adhesive. Books bound with PUR adhesive under normal use, will last many years.
The composition of PUR adhesive enables it to form a strong bond with the paper even in the presence of inks, coatings and varnishes. This is in contrast to EVA perfect binding where these types of materials are not recommended because they may not adhere well. Another major advantage of PUR adhesive is its flexibility once cured. This allows the spine be to rounded if needed. PUR adhesive offers much more flexibility than traditional binding adhesives, and PUR-bound books have the flexibility approaching that of the “lay-flat” binding technique.
The strength, flexibility and durability of PUR adhesive overcomes many of the inherent concerns of perfect binding. Designers are free to use ink coatings liberally, as PUR will form a super-strong bond for years.