Softcover Educational Books adhesive production process, easy to be ignored several problems

Softcover Educational Books adhesive production process, easy to be ignored several problems

Adhesive production process, easy to be ignored a few problems

1. The text coated paper 32 above 5 press paperback books, do not use wireless gum production process, even if chooses special hot melt adhesive coated paper, the bonding strength may be, however, 32 open above 5 printed sheet coated paper finished book, a stack of pages that seems to be as strong cardboard, book rubber easy to be broken, the gate was torn.

2 thick back of the book, can not choose wireless binding production process, scroll through the middle of the block can not open; The concave center of the back of the book deformation, forming an inverted raking circle; Book block middle gum fold strength is poor, easy to ungum.

3 periodicals, teaching materials of non-long-term preservation of reference books, can not use wireless binding production process, high cost, low production efficiency.

4 students textbook back thickness is thin, and the use of a short cycle, can choose the binding process; Like reference books or books with collection and preservation value, hardcover technology must be used, and binding technology must not be used, because hot melt adhesive is affected by factors such as preservation environment, generally more than 3 years of aging period, it is easy to deglue or fracture.