IT1110091B - DEVICE FOR MEASURING THE POROSITY OF A MOVING AREA OF PAPER OR SIMILAR AIR-PERMEABLE MATERIAL - Google Patents

DEVICE FOR MEASURING THE POROSITY OF A MOVING AREA OF PAPER OR SIMILAR AIR-PERMEABLE MATERIAL

Info

Publication number
IT1110091B
IT1110091B IT19832/79A IT1983279A IT1110091B IT 1110091 B IT1110091 B IT 1110091B IT 19832/79 A IT19832/79 A IT 19832/79A IT 1983279 A IT1983279 A IT 1983279A IT 1110091 B IT1110091 B IT 1110091B
Authority
IT
Italy
Prior art keywords
porosity
paper
measuring
permeable material
moving area
Prior art date
Application number
IT19832/79A
Other languages
Italian (it)
Other versions
IT7919832A0 (en
Original Assignee
Hauni Werke Koerber & Co Kg
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 Hauni Werke Koerber & Co Kg filed Critical Hauni Werke Koerber & Co Kg
Publication of IT7919832A0 publication Critical patent/IT7919832A0/en
Application granted granted Critical
Publication of IT1110091B publication Critical patent/IT1110091B/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
    • G01N21/86—Investigating moving sheets

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Paper (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
IT19832/79A 1978-02-06 1979-02-02 DEVICE FOR MEASURING THE POROSITY OF A MOVING AREA OF PAPER OR SIMILAR AIR-PERMEABLE MATERIAL IT1110091B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782804975 DE2804975A1 (en) 1978-02-06 1978-02-06 DEVICE FOR MEASURING THE POROSITY OF A MOVING WEB OF PAPER OR SIMILAR AIR PERMEABLE MATERIAL

Publications (2)

Publication Number Publication Date
IT7919832A0 IT7919832A0 (en) 1979-02-02
IT1110091B true IT1110091B (en) 1985-12-23

Family

ID=6031266

Family Applications (1)

Application Number Title Priority Date Filing Date
IT19832/79A IT1110091B (en) 1978-02-06 1979-02-02 DEVICE FOR MEASURING THE POROSITY OF A MOVING AREA OF PAPER OR SIMILAR AIR-PERMEABLE MATERIAL

Country Status (4)

Country Link
JP (1) JPS54108684A (en)
DE (1) DE2804975A1 (en)
FR (1) FR2416461A1 (en)
IT (1) IT1110091B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4684256A (en) * 1983-12-30 1987-08-04 Nitto Electric Industrial Co., Ltd. Apparatus and method for continuously measuring polarizing property
DE3430439A1 (en) * 1984-08-18 1986-05-07 Hoechst Ag, 6230 Frankfurt METHOD AND ARRANGEMENT FOR CONTROLLING PROCESS PARAMETERS IN THE PRODUCTION OF STRETCHED FILMS
DE4302137C2 (en) * 1993-01-27 1999-09-02 Micro Perforation Engineering Method and device for optical porosity measurement on a running web
DE4421962C1 (en) * 1994-06-23 1996-01-04 Mpe Micro Perforation Engineer Optical measurement of micro-perforation tracks in moving strip material
DE19616018C2 (en) * 1996-04-23 2002-10-24 Mpe Micro Perforation Engineer Method and device for optical porosity measurement in a running web
US7224447B2 (en) 2004-03-08 2007-05-29 Philip Morris Usa Inc. System and method for measuring the permeability of a material
EP3411693A1 (en) * 2016-02-05 2018-12-12 The Procter and Gamble Company Method and apparatus for detecting holes in substrates in absorbent article converting lines

Also Published As

Publication number Publication date
JPS54108684A (en) 1979-08-25
IT7919832A0 (en) 1979-02-02
FR2416461A1 (en) 1979-08-31
DE2804975A1 (en) 1979-08-09

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