Die entsprechende Maßeinheit im Deutschen wird, wie eine der folgenden Sites zeigt, in "N/cm" (Newton pro Zentimeter) wiedergegeben. Die genaue Umrechnung überlasse ich hier dir.
"taper tension" scheint "Kegelspannung" zu sein, bin mir aber nicht hundert Prozent sicher.

http://www.newsandtech.com/issues/1999/09-99/nt/09-99_tensio...
Calculating tension levels
The two most commonly used terms when talking about web tension are PLI (Pounds per Lineal Inch) of paper and TWT (Total Web Tension). The equations for calculating PLI or TWT are PLI = TWT/Web Width and TWT = PLI x Web Width. Those who have a means of accurately measuring tension will find that the best results are achieved when running between 1 PLI and 3 PLI. A good starting point for printing 4-color process on 30-pound newsprint and 33 inches wide would be 1 1/2 PLI or approximately 50 pounds TWT.
http://216.239.59.104/search?q=cache:Ko1VTVMMoPEJ:www.manrug...
Papierspannung web tension
http://www.dfe.com/tech-webterms.html
PLI: Abbreviation for Pounds per Lineal Inch. A unit of tension measurement expressed as the total force (in pounds) on the web in the machine direction (MD) divided by the width (in inches) of the web. Expressing tension in PLI allows comparison of typical tensions between various width webs or various web substrates.
http://www.schneidersoehne.com/ssp/papier/lexikon/B_de_engl....
Bahnspannung web tension
http://www.tu-chemnitz.de/etit/proaut/bahnspannungsregelung....
http://www.haehne.de/?OVRAW=bahnspannung&OVKEY=bahnspannung&...
http://www.honigmann.com/page.php?p=pview&m_kat=7&m_grp=75&m...
http://forum.onlineconversion.com/showthread.php?t=250
http://de.wikipedia.org/wiki/Siebdruck
Gewebespannung wird in Newton pro cm entlang der Aussenkante des Rahmens gemessen, ein Polyestergewebe von 120 Fäden/cm wird mit etwa 18–20 N/cm vorgespannt
http://www.dfe.com/tech-webterms.html
Taper tension feature: A means of decreasing web tension as roll diameter increases in a rewind zone; Taper tension helps produce a roll of better quality by eliminating telescoping, crushed cores, and overly tight or loose rolls.
http://www.martinauto.com/pdf/tech_sheets/german/LR_ger.pdf