At present, there are two basic folding methods and folding machines. Barrier folding machines are used for parallel folding, and are often used for folding leaflets and brochures. This folding method usually folds the printed sheet twice in one direction, or more times.
The other is a knife-type folding machine, which first folds the printed sheet once, then rotates the printed sheet by 90 degrees and then folds the second time to complete one such process, forming 4 pages; 2 such processes forming 8 pages , And so on. There is also a folding machine that combines the functions of a fence-type folding machine and a knife-type folding machine, and is usually used in book binding.
Barrier folding machines use diagonal rollers to position a printed sheet on the side rails. The delivery roller pushes the printed product between two metal plates. These two plates can be called a folding plate in general. The preset stopping point can jam the paper, and then the roller grabs the paper to complete the first folding If additional settings are made for the roller, the folding plate can complete multiple folding processes.
Knife folding machines can handle thick and heavy materials well. It uses a thin blade to apply force to the paper between the two rollers. First, the paper is loaded onto the knife folding machine. After it is in place, the blade between the two rotating rollers descends. After the protrusion surface on the roller touches the paper and presses the crease on the paper, it is sent out of the path , Waiting for the arrival of the next printed sheet.
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