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= Folding =

There are several types of folder machine: buckle, knife, and both. The folding is made with a specific combination of folders according to respect order of reading. 

There are different kinds of folds:

== parallel fold ==

They are used to folding of the leaflets.

 * fan fold
 * rolled fold
 * economic fold
 * gate fold
 * window fold

==  Crossed fold ==

They are used for folding brochures, magazines, books.