... PUR capability 2. have 4 book clamps TBT50/4D perfect binder with PUR systemPUR (Polyurethan eReactive, hereinafter referred to as PUR ... the air, it will cause irreversible cross linking reaction, forming a particularly firm adhesive coating with paper sheets, moreover, it ... (EVA hot melt adhesive, PVA emulsion), and it is a kind of thermoplastic adhesive material with extremely great intensity, good ...