PUR Adventure Perfect Binding
No smoke, no smell, Green production !
Made in Italy
Max speed 200 book/h
Max binding size 17.7”×13” 450mmx330mm
Min binding size 4.7”×4” 120mmx100mm
Min cover size 9.4”×4” 240mmx110mm
Max cover size 27.5”×17.3” 700mmx440mm
Book spine thickness 0.12”-1.97” 3-50mm
Overall dimension(ft) 6x2.6x4 1230mmx790mmx1850mm
Power supply Single-phase 220V, 4.6KW
Max compressed air pressure 0.8Mpa
Flexibility, wide range of bound products, more service to clients
PUR (polyurethane reactive) is a hot melt adhesive, which reacts with moisture in the air and substrates and expands the Molecular chain linkage and thus forms a significantly stronger bond than a conventional EVA hot melt. The page pull strength of a PUR-bound book (27 N/mm3) is more than 5.5 times that of a standard perfect-bound book using EVA adhesive (4.9 N/mm3).
The first generation of PUR glue was introduced in 1985, followed by the second generation in 1996 and the third generation in 2000. The third generation PUR glue has a curing time of about 16 hours.
Bondable to Various Surfaces
PUR has a broader array of paper surfaces to which it can bond compared with EVA. These paper surfaces include printed paper, coated paper, plastic paper etc. Because of the missing moisture in the glue, even papers with wrong grain direction can be processed without problems.
Flat Book Opening
The strong binding strength of PUR allows for less amount of glue applied. Thinner glue coating and the flexibility of the gluecreates flat book opening and superior spine formation.
Durable book Quality
PUR is largely impervious to temperature and humidity extremes. The temperature resistance for PUR is from -40°C to
PUR is environmentally friendly and makes the books easier to recycle than those with hot melt. The PUR glue temperature
(120 °C) is lower than EVA glue temperature (150-180°C) and thus saves energy.
For a standard PUR glue consumption is about 75% lower than EVA glue consumption for the same amount of booksproduced (assuming an application thickness of 0.55mm for PUR and an application thickness of 2.5mm for EVA). The lower glue consumption justifies the relative higher unit cost of PUR glue.