Global Patent Index - EP 1274993 A1

EP 1274993 A1 20030115 - METHOD AND DEVICE FOR THE MEASUREMENT OF THE WINDING TENSION OF A PAPER ROLL

Title (en)

METHOD AND DEVICE FOR THE MEASUREMENT OF THE WINDING TENSION OF A PAPER ROLL

Title (de)

VERFAHREN UND VORRICHTUNG ZUR MESSUNG DER WICKELHÄRTE EINER PAPIERROLLE

Title (fr)

PROCEDE ET DISPOSITIF POUR MESURER LA TENSION D'ENROULEMENT D'UN ROULEAU DE PAPIER

Publication

EP 1274993 A1 20030115 (DE)

Application

EP 01937988 A 20010417

Priority

  • DE 0101490 W 20010417
  • DE 10019497 A 20000419

Abstract (en)

[origin: WO0179832A1] Rolls of paper comprise individual layers of paper under differing degrees of tension, lying on top of each other. The aim of the invention is to measure the resulting winding tension, which varies along the radius, whereby physical interactive effects can be measured. Said aim is achieved, whereby ultrasound is irradiated in the region of the top face of the roll of paper and the resulting ultrasound recorded, after interacting with the laminated paper sheets. The interactive effects are a criterium for the winding tension. The corresponding device is an ultrasound measuring system provided with at least one ultrasound transmitter (10, 20, 30, 40, 50, 60, 70, 80, 110) and at least one ultrasound receiver (10, 20, ... 120), which may be placed upon and moved along the top face (2) of the paper roll (1).

IPC 1-7

G01N 29/18

IPC 8 full level

G01N 29/07 (2006.01); G01N 29/11 (2006.01); G01N 29/22 (2006.01)

CPC (source: EP)

G01N 29/07 (2013.01); G01N 29/11 (2013.01); G01N 29/223 (2013.01); G01N 2291/0231 (2013.01); G01N 2291/0237 (2013.01); G01N 2291/02827 (2013.01); G01N 2291/0422 (2013.01); G01N 2291/102 (2013.01); G01N 2291/106 (2013.01)

Citation (search report)

See references of WO 0179832A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family (publication)

WO 0179832 A1 20011025; DE 10019497 A1 20011031; DE 10019497 C2 20020321; EP 1274993 A1 20030115; US 2003230140 A1 20031218

DOCDB simple family (application)

DE 0101490 W 20010417; DE 10019497 A 20000419; EP 01937988 A 20010417; US 27383302 A 20021018