CREASING DEVICE AND CORRESPONDING METHOD
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United States of America Patent
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Issued Date -
Jan 16, 2014
app pub date -
Mar 30, 2012
filing date -
Mar 30, 2011
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Abstract
A creasing device (10) for a work unit (11) of a machine (12) for at least creasing and possibly cutting a sheet made of a relatively rigid material, such as corrugated cardboard for packaging, fed in a determinate work direction (F), comprises a first creasing member (32) mounted rotatable with its first axis of rotation transverse to the work direction (F). The device (10) also comprises pre-creasing means (41) disposed upstream of the first creasing member (32) in the work direction (F), and configured to carry out a pre-creasing which progressively deforms the material of the sheet to be worked before it is subjected to the creasing operation proper.
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