Paperback bookbinding process.
Paperback is a common binding form of books, characterized by soft paper covers. Manual and semi-automatic binding process for: page cutting → folding → matched book post → matched book block → stapled → cover → cut book
From cutting to stapling for book block processing:
Folding and cutting
After the large printed pages are bumped together, they are cut to the required size by a single - sided paper cutter.
The cutting is done on a paper cutter. Paper cutting machine according to the length of its cutting knife, divided into full and split two; According to its degree of automation is divided into automatic cutting machine, semi-automatic cutting machine. Operation, should pay attention to safety, cut the paper, incision should be smooth, neat, not crooked, size meet the requirements.
Folding hinge
The process of folding a printed large page into a sheet, in order of page number and folio size, is called folding.
Folding mode, roughly divided into three.
1. Vertical cross folding method
At the end of each fold, the pages must be rotated at a 90 degree Angle to make the next fold, so that the creases of the book are perpendicular to each other. This folding form, easy to operate, fold number and the number of pages have a certain relationship.
2. Parallel folding method
The book is folded parallel to each other. Suitable for folding thicker pages, such as children's books, picture books, etc.
3. Mixed folding method
In the same book, there are both parallel and vertical folding methods to mix folding.
Printing plants, most of the use of mechanical folding. Folding machine is divided into knife folding machine, fence folding machine and grid knife mixed folding machine, there are two kinds of full sheet and split.
Knife folding machine, is the use of a folding knife to press paper into the transverse slit of the two rotating folding rollers, through the friction between the two rollers and paper to complete the folding process. This folding machine can fold full sheet printing, folding accuracy is high, but occupies a large area.
Fence folding machine, is to make the movement of the paper, through the folding roller along the fence movement until the baffle plate, under the friction of the folding roller, the paper is bent and folded. This folding machine, folding speed is fast, occupies a small area, but is not suitable for folding large, thin and soft paper.
The same folding machine, is a combination of knife and fence type, called grid knife mixed folding machine. The folding speed of this folding machine is faster than knife folding machine.
In addition, book and magazine web presses are usually equipped with folding devices.