Space-saving and High Quality Single clamp PUR Perfect Binder
High quality PUR binding is assured with dual application drums and separate EVA / PSA side glue application. Drum application enables production of one to one variable thickness books with maximum quality control.
Polyurethane Reactive, also called PUR, is a popular due to it's superior binding strength and ecofriendliness.
PUR glue is more flexible than EVA glue and provides lay flat qualities when the book is opened. It is ideal for music books and cookbooks, which are read on the desk, and two-page spread such as photo books. This lay-flat quality makes it easy to read books and extends the book life.
The binding strength is about three times stronger than the EVA glue. Coated paper or specialty stocks, which can be be a problem with EVA, are bound securely in PUR bound books. EVA glue binding strength becomes weaker over time. However, the PUR glue retains durability and flexibility in both high and low temperatures for long lasting book quality.
The PUR glue is unaffected by temperature and humidity compared to the EVA glue. This allows PUR bound books to be handled in almost any climate or location. If EVA is attached to printing area, solvent ink and EVA bring about reactions, causing a binding issues. However, PUR is not affected by ink solvent and reduces potential problems.
The changeover can be completed in less than one minute by simply inputting job information at the color touchscreen. All setups including glue setup, nipping width, nipping height and scoring rollers can be adjusted automatically by the book block information.
Book thickness caliper is provided as standard equipment. Book thickness is automatically measured by placing the book block into the digital caliper. Thickness data automatically begins set-up of each mechanism. The next thickness data automatically begins set-up while the previous book is still in-process. This provides operating efficiency for short-run book production.