In addition to the requirements of curing time and development time, the cooling, hardening and drying time of bookbinding hot melt adhesives also need to match the equipment publishing time. It is necessary to ensure that the books are on the linkage line, after being glued and bonded, before being transferred to the cutting machine. When the book machine is in the position, it should be cooled, hardened and dried to ensure the safety of the cut product. Basically, this process takes about 3 minutes at a room temperature of 25°C.
If the hot melt adhesive is not hardened during cutting, the book back will be deformed, the size of the finished product will be unstable, and the knife will stick.