GB1115904A - Method of testing cellulosic sheet material - Google Patents

Method of testing cellulosic sheet material

Info

Publication number
GB1115904A
GB1115904A GB24313/64A GB2431364A GB1115904A GB 1115904 A GB1115904 A GB 1115904A GB 24313/64 A GB24313/64 A GB 24313/64A GB 2431364 A GB2431364 A GB 2431364A GB 1115904 A GB1115904 A GB 1115904A
Authority
GB
United Kingdom
Prior art keywords
concentration
component
paper
rays
per unit
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB24313/64A
Inventor
William Thompson Gartland
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reed Paper Group Ltd
Original Assignee
Reed Paper Group Ltd
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 Reed Paper Group Ltd filed Critical Reed Paper Group Ltd
Priority to GB24313/64A priority Critical patent/GB1115904A/en
Publication of GB1115904A publication Critical patent/GB1115904A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/16—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the material being a moving sheet or film
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (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)
  • Toxicology (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

1,115,904. X-ray testing of cellulosic sheets. REED PAPER GROUP Ltd. Sept. 8, 1965 [June 11, 1964], No.24313/64. Heading G1A. The concentration of a component in cellulosic sheet material e.g. paper is measured by directing a beam of soft X-rays through the sheet and calculating the concentration from the intensity of transmitted X-rays. If the concentration of only one component varies and the mass per unit area remains constant, a single measurement of X-ray absorption suffices. If the concentration of more than one component may vary, measurements are taken at two wavelengths, close to and on either side of an absorption edge of the element to be determined. The radiation is detected by a proportional or scintillation counter and the output therefrom is fed to a pulse height analyzer. By adjusting the pulse height analyzer, the system may be made effectively sensitive to any desired wavelength whilst using a source of broad wavelength range. The measurement may be compensated for variations in mass per unit area by measuring the latter with a #-ray absorption gauge. The invention may be applied to measuring the moisture content of paper produced by a Foudrinier machine.
GB24313/64A 1964-06-11 1964-06-11 Method of testing cellulosic sheet material Expired GB1115904A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB24313/64A GB1115904A (en) 1964-06-11 1964-06-11 Method of testing cellulosic sheet material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB24313/64A GB1115904A (en) 1964-06-11 1964-06-11 Method of testing cellulosic sheet material

Publications (1)

Publication Number Publication Date
GB1115904A true GB1115904A (en) 1968-06-06

Family

ID=10209732

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24313/64A Expired GB1115904A (en) 1964-06-11 1964-06-11 Method of testing cellulosic sheet material

Country Status (1)

Country Link
GB (1) GB1115904A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272645A2 (en) * 1986-12-20 1988-06-29 Ahlstrom Automation GmbH & Co. KG Method for selectively measuring the filling material in running-material webs, particularly paper sheets

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272645A2 (en) * 1986-12-20 1988-06-29 Ahlstrom Automation GmbH & Co. KG Method for selectively measuring the filling material in running-material webs, particularly paper sheets
EP0272645A3 (en) * 1986-12-20 1989-08-09 Paul Lippke Gmbh & Co. Kg Method for selectively measuring the filling material in running-material webs, particularly paper sheets

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