IT7919832A0 - DEVICE FOR MEASURING THE POROSITY OF A MOVING AREA OF PAPER OR A SIMILAR AIR PERMEABLE MATERIAL. - Google Patents

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

Info

Publication number
IT7919832A0
IT7919832A0 IT7919832A IT1983279A IT7919832A0 IT 7919832 A0 IT7919832 A0 IT 7919832A0 IT 7919832 A IT7919832 A IT 7919832A IT 1983279 A IT1983279 A IT 1983279A IT 7919832 A0 IT7919832 A0 IT 7919832A0
Authority
IT
Italy
Prior art keywords
porosity
paper
measuring
permeable material
air permeable
Prior art date
Application number
IT7919832A
Other languages
Italian (it)
Other versions
IT1110091B (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 true IT7919832A0 (en) 1979-02-02
IT1110091B 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
US10481091B2 (en) * 2016-02-05 2019-11-19 The Procter & Gamble Company Method and apparatus for detecting holes in substrates in absorbent article converting lines

Also Published As

Publication number Publication date
DE2804975A1 (en) 1979-08-09
IT1110091B (en) 1985-12-23
JPS54108684A (en) 1979-08-25
FR2416461A1 (en) 1979-08-31

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