Application of Urethane Hot Melt Adhesive in Book Binding

I. Introduction Polyurethane (PUR) adhesive refers to a type of adhesive containing urethane groups (-NHCOO-) or isocyanate groups (-NCO-) in the molecular chain. Because -NCO in its molecular chain can react with a variety of active hydrogen-containing functional groups to form interface chemica

Color space conversion settings for prepress output images

The image file used for printout must be CMYK color mode, not RGB mode. The process from RGB mode to CMYK mode is what we call the separation process. Although this operation is very simple, but really want to color separation to meet the actual conditions of the printing, you must do a good job i