Patent · US Active

Web tension profile measuring method and roll applying the same

US7444862B2 · kind B2 · utility

21Cited by

7References

16Claims

0Family size

Assignee

Metso Paper Inc. · FI

Inventors

Matti Innala · Ayacucho, PE
Jorma Kinnunen · Inari, FI
Jussi Koskelainen · Helsinki, FI
Tatu Pitkänen · Ayacucho, PE
Petteri Lannes · Helsinki, FI
Markus Nylund · Helsinki, FI
Marko Tiilikainen · Kellokoski, FI
Jyrki Saloniemi · Jyväskylä, FI
Reijo Huuskonen · Leppävesi, FI

Key dates

Filing date	Jul 16, 2007
Grant date	Nov 4, 2008
Priority date	—
Expiry date	Jul 16, 2027

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65H2553/82
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method and a roll for measuring a tension profile is provided. The roll has planted on its surface a spirally helical pressure-sensitive film sensor, such as an EMFi pressure-sensitive film sensor, which makes contact with a web obliquely and which, co-directionally with the web, has a measuring range which is substantially equal to or shorter than a web overlap angle when the roll is used for measuring a lateral tension profile of the web.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.