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Sunday, August 9, 2020 | History

3 edition of Methods for determining optical properties ofpulp, paper and board found in the catalog.

Methods for determining optical properties ofpulp, paper and board

British Standards Institution.

Methods for determining optical properties ofpulp, paper and board

(metric units).

by British Standards Institution.

  • 297 Want to read
  • 24 Currently reading

Published by B.S.I in London .
Written in English

    Subjects:
  • Paper -- Testing -- Specifications.

  • Edition Notes

    SeriesBS 4432: Part 1: 1969
    The Physical Object
    Pagination11p. ;
    Number of Pages11
    ID Numbers
    Open LibraryOL15069887M
    ISBN 100580050173
    OCLC/WorldCa502173852

      Silica aerogel has been known as a promising candidate for high performance transparent insulation material (TIM). Optical transparency is a crucial metric for silica aerogels in many solar related applications. Both scattering and absorption can reduce the amount of light transmitted through an aerogel slab. Due to multiple scattering, the transmittance deviates from the Beer-Lambert law. THE INFLUENCE OF PULP REFINING ON DE-INKING POTENTIAL AND STRENGTH PROPERTIES OF INK JET PRINTED PAPER. Seyed Ali Haji Mirza Tayeb, a A. Jahan Latibari, a, * A. Tajdini, a and S. M. J. Sepidehdam a. The effect of laboratory refining on de-inking potential of inkjet printed handsheets was investigated.

    In this paper, a device for measuring stress-strain properties in the thickness direction of paperboard is presented. The device is used for out-of-plane tensile, compression and shear loading. Chromometer Method),” describes evaluating the color of refined oils visually using Saybolt Color Units. ASTM D, “Standard Test Method for Brightness of Pulp, Paper, and Paperboard (Directional Reflectance at nm),” describes how to determine brightness of white paper products (even.

    between fibre and paper properties are hard to find, but this does not mean that correlations do not exist. Fibre properties, measured by the pulp analyser PulpEye, were investigated and correlations to paper properties were studied. The work was divided into three different studies. Study 1 was an. Acid-free is a term used to indicate that a paper or board, when it leaves the factory, has a pH of or higher, which indicates that there is little or no acid that can accelerate aging or deterioration. However, "acid-free" does not mean that the paper or board is guaranteed to remain in this condition or that it is free of any other.


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Methods for determining optical properties ofpulp, paper and board by British Standards Institution. Download PDF EPUB FB2

Methods for determining optical properties of pulp, paper and board. Measurement of diffuse blue reflectance factor (ISO brightness) of paper and board Status: Superseded, Withdrawn Published: June Replaced By: BS ISO Methods for determining optical properties of pulp, paper and board.

Determination of opacity (paper backing) of paper and board by the diffuse reflectance method Status: Withdrawn, Superseded Published: June Replaced By: BS ISO been developed to provide guidelines for the testing of optical properties of pulp and paper products.

It is evident that the reported values for opacity, gloss, brightness, whiteness and other optical properties of paper are meaningful only in the context of the standard method used for the particular measurement.

Optical Properties of Paper and Board (15 ° from the plane of paper). This method is suitable for low to moderate-gloss coated and uncoated papers as well as for most ink films on paper or paperboard.

The standard describes the technical requirements for a corresponding gloss meter. Gloss measurements are normally made using standard. This chapter gives an overview of fiber morphology from wood and shows what features to look for in fibers for their identification.

It also provides information to help determine pulping and bleaching methods used to prepare the pulp. It is fundamental that the properties on paper depend on the fiber properties and the method of fiber preparation. sheets for determining optical properties of mechanical pulps, i.e.

a method that reduces the risk of discoloration during preparation of the sheets that is reasonably fast and can be used with small pulp quantities. Different approaches to determine the light absorption coefficient of these sheets when the. The optical properties of paper are extremely important for many of its uses, especially when paper is used for printing.

The important optical properties include reflectance and opacity. It is important to know how processing and variations in the composition of paper will affect the optical properties. Paper and Board Manufacture and Properties Workshop Charles P. Klass Klass Associates Inc.

Redington Beach, FL. zBending Resistance of Paper – Gurley Method zStiffness of Paperboard – Taber Method zTearing Resistance Paper Testing Optical Properties zBrightness zWhiteness zColor zDirt Count zFading zFluorescence zGloss zOpacity.

These four mechanisms result in the different optical properties of paper and board. Common optical tests for paper and board include: brightness, opacity, formation, and color. For these tests only visible light and wavelengths between and Nanometers is considered.

Almost all grade of paper has some percentage of moisture. Moisture in paper varies from 2 - 12% depending on relative humidity, type of pulp used, degree of refining and chemical used. Most physical properties of paper undergo change as a result of variations in moisture content.

buy iso (r) paper and board - determination of capillary rise - klemm method from sai global. Papermaking, formation of a matted or felted sheet, usually of cellulose fibers, from water suspension on a wire screen. Paper is the basic material used for written communication and the dissemination of information.

In addition, paper and paperboard provide materials for hundreds of. Testing of paper and board. Paper and book preservation. The phenomena that give rise to paper's optical properties, especially its ability to scatter and absorb visible light, are highly. The method to find kappa # of pulp is described in TAPPI T Lignin in Pulp Commercial pulp range in lignin content from % for "soft cook" chemical pulp, about 8% for "hard cook" chemical pulp and up to 16% for semi-chemical general lignin affects the properties of pulp in adverse manner.

Purchase the series 2 ways. Purchase the print version of the complete series directly from TAPPI.; Purchase an eBook license from Forest Products Engineers, which provides unlimited access to the full series of e-books or individual volumes.E-book licenses are recommended for companies and universities to allow staff and students a means for easier searching; finding chapters through the.

Parsons for originating the optical method of estimating the relative bonded area in a pulp or a paper sheet. Van den Akker also cited using the method for determining the mechanical properties of paper. The scattering and the absorption coefficients were dealt with by the Kubelka.

Papermaking - Papermaking - Processes for preparing pulp: Mechanical or groundwood pulp is made by subjecting wood to an abrading action, either by pressing the wood against a revolving grinding stone or by passing chips through a mill.

The wood fibres are separated and, to a considerable degree, fragmented. Chemical wood pulp is made by cooking wood chips with chemical solutions in digesters. Viscosity of pulp (capillary viscometer method) 1. Scope This method describes a procedure for determining the viscosity of % cellulose solutions, using M cupriethylenediamine as a solvent and a capillary viscometer.

Measurements may be made on bleached cotton and wood pulps. Biermann's Handbook of Pulp and Paper: Paper and Board Making, Third Edition provides a thorough introduction to paper and board making, providing paper technologists recent information.

The book emphasizes principles and concepts behind papermaking, detailing both the physical and chemical processes. It has been updated, revised and extended. SGS-IPS Testing performs pulp and paper testing following the TAPPI test methods at its laboratory headquartered in Appleton, Wisconsin.

These TAPPI standards are testing procedures and related practices used in the measurement, evaluation, and description of pulp, paper, and related products, including raw materials used in their manufacture, use, or in scientific investigations of any such. Properties of pulp can be determined by: • Ash content in pulp but it is not important parameter of pulp.

• Dirt content of pulp particularly of recycled pulp is important for its suitability to make fine paper.

• Moisture Content of Market Pulp is important from storage, transportation and handling point of view. 6.cal pulping methods used for delignifying wood (table 2-l), separating fibers, and removing discol-oration, all integrated pulp and paper mills involve the same general steps in the manufacture of pulp and paper.

These steps include: 1) raw material preparation (e.g., debarking and chipping); 2) me-chanical and/or chemical separation of the wood.

Abstract. Paper properties, especially paper optical properties, are important factors for ink-jet print color reproduction. The objective of this work was to explore the influences of paper optical properties on print color reproduction.