The effect of the press felt on press section vibration, PaperCon 2014

Please Note: This document will be available in PDF format in the "My Electronic Documents" link on the home page once your order has been completed. Please make sure you have the latest version of Acrobat Reader. Click on the Acrobat Reader icon to check for the latest version, it’s FREE. To print a hardcopy of a PDF file correctly you must have a postscript printer. If you are not sure if your printer is a postscript printer please refer to your owner’s manual.

Purchase of electronic (downloadable) documents made at www.tappi.org by credit cards, followed by instant download CANNOT be cancelled. We do not offer refunds on electronic download documents.

An experiment was conducted on a pilot paper machine press section to determine the effect of press felts on press section vibration. A synchronized averaging technique was employed to separate the vibration caused by press felts from other paper machine components. It was found that defects in the press felts (e.g. mass non-uniformity, seam, splices, etc.) are one of the major sources of press section vibration. On the other hand, press felts can also absorb the energy of the vibrations caused by the other machine components. Different types of felts have different capabilities to absorb the energy and thus will lead to vibrations with different magnitudes. By changing the structure of the press felt, the felt manufacturer can improve the felt barring resistance and thus reduce the press section vibrations.