Abstract: An apparatus for folding sheets or sheet stacks, including at least two folding/transport rollers, transport device and knife, the transport device defining transport plane E for sheets or sheet stacks fed in transport direction R, knife being movable substantially perpendicularly to and through transport plane E, folding/transport rollers being arranged above transport plane E, oppositely on both sides of knife, axis of rotation A of folding/transport rollers extending substantially perpendicularly to transport plane E, and at least two folding/transport rollers each having, at their end facing toward transport plane E, rounded portion, such that narrowing gap S is formed between the at least two folding/transport rollers, into which gap sheets or sheet stacks can be introduced by means of knife so as to be folded there and at same time conveyed away in transport direction R, and to corresponding method.

Abstract: An apparatus for folding sheets or sheet stacks, including at least two folding/transport rollers, transport device and knife, the transport device defining transport plane E for sheets or sheet stacks fed in transport direction R, knife being movable substantially perpendicularly to and through transport plane E, folding/transport rollers being arranged above transport plane E, oppositely on both sides of knife, axis of rotation A of folding/transport rollers extending substantially perpendicularly to transport plane E, and at least two folding/transport rollers each having, at their end facing toward transport plane E, rounded portion, such that narrowing gap S is formed between the at least two folding/transport rollers, into which gap sheets or sheet stacks can be introduced by means of knife so as to be folded there and at same time conveyed away in transport direction R, and to corresponding method.