DK1111374T3 - Detection of irregularities in the thickness of a flexible material web - Google Patents

Detection of irregularities in the thickness of a flexible material web

Info

Publication number
DK1111374T3
DK1111374T3 DK99125749T DK99125749T DK1111374T3 DK 1111374 T3 DK1111374 T3 DK 1111374T3 DK 99125749 T DK99125749 T DK 99125749T DK 99125749 T DK99125749 T DK 99125749T DK 1111374 T3 DK1111374 T3 DK 1111374T3
Authority
DK
Denmark
Prior art keywords
flexible material
irregularities
wound
gauge
detection
Prior art date
Application number
DK99125749T
Other languages
Danish (da)
Inventor
Peter Dr Biele
Heinz-Guenter Schwanke
Mathias Reiter
Harald Dr Schmalfuss
Original Assignee
Opdix Optoelectronic Gmbh Bera
Thyssenkrupp Stahl Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Opdix Optoelectronic Gmbh Bera, Thyssenkrupp Stahl Ag filed Critical Opdix Optoelectronic Gmbh Bera
Application granted granted Critical
Publication of DK1111374T3 publication Critical patent/DK1111374T3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/952—Inspecting the exterior surface of cylindrical bodies or wires

Landscapes

  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Paper (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

Method for detecting irregularities in the gauge of a flexible material that can be found over the width of the material and along its length. The material is wound around a winder and while being wound is illuminated using a light bundle that reflects light back so that its reflection point can be spatially resolved and used to detect variations in the winding surface shape. Changes in the winding surface shape are caused by irregularities in the gauge of the wound flexible material. The invention also relates to a device for detecting changes in dimension or gauge of a wound flexible material.
DK99125749T 1999-12-23 1999-12-23 Detection of irregularities in the thickness of a flexible material web DK1111374T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99125749A EP1111374B1 (en) 1999-12-23 1999-12-23 Detection of non-uniformities of the thickness of a flexible web

Publications (1)

Publication Number Publication Date
DK1111374T3 true DK1111374T3 (en) 2004-04-05

Family

ID=8239704

Family Applications (1)

Application Number Title Priority Date Filing Date
DK99125749T DK1111374T3 (en) 1999-12-23 1999-12-23 Detection of irregularities in the thickness of a flexible material web

Country Status (7)

Country Link
EP (1) EP1111374B1 (en)
AT (1) ATE256862T1 (en)
AU (1) AU2171101A (en)
DE (1) DE59908127D1 (en)
DK (1) DK1111374T3 (en)
ES (1) ES2213972T3 (en)
WO (1) WO2001048464A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10163775A1 (en) 2001-12-22 2003-07-03 Roche Diagnostics Gmbh Analysis system for determining an analyte concentration taking into account sample and analyte-independent changes in light intensity
KR100891842B1 (en) * 2007-08-28 2009-04-07 주식회사 포스코 Device for detecting the optic bug of archetypal rod and method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162126A (en) * 1976-12-10 1979-07-24 Hitachi, Ltd. Surface detect test apparatus
US5278635A (en) * 1990-03-28 1994-01-11 Konica Corporation Surface defect detection apparatus
EP0519255A3 (en) * 1991-05-31 1993-07-21 Fuji Photo Film Co., Ltd. Defect inspection system and inspection process

Also Published As

Publication number Publication date
EP1111374B1 (en) 2003-12-17
ES2213972T3 (en) 2004-09-01
EP1111374A1 (en) 2001-06-27
ATE256862T1 (en) 2004-01-15
DE59908127D1 (en) 2004-01-29
WO2001048464A1 (en) 2001-07-05
AU2171101A (en) 2001-07-09

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