| 摘要 |
The method for folding paper strip (5), which is preferably perforated or grooved, comprises applying a pulse of air (14) from a jet (13) so that it is forced into the nip of a pair of rollers (1, 2). An Independent claim is included for a machine for carrying out the method comprising a conventional blade folder in which the blade (4) is replaced by or fitted with an air jet.
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