DOCSLIB.ORG

Elvanol™ in the Paper Industry

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Elvanol™ in the Paper Industry Bringing paper to life ELVANOL™ IN THE PAPER INDUSTRY THE PERFORMANCE ADVANTAGES OF KURARAY ELVANOL™ PVOH BARRIER PROPERTIES Resistant to oil, grease and water ENVIRONMENTAL Lower BOD than starch FILM STRENGTH Tensile = 9,000 psi (vs 600 psi EASE OF PREPARATION Can be batch or jet cooked; for starch) or co-cooked with hot-water- BINDING CAPACITY 3 times the capacity of starch soluble polymers 2.5 times the capacity of synthetic latex Because of its outstanding film strength, barrier properties and binding capacity, ELVANOL™ polyvinyl alcohol enjoys wide use in the manufacture of paper and paperboard. Kuraray manufacture ELVANOL™ PVOH in a number of specialized grades offering a range of useful performance features and convenient processing characteristics. Reviewed inside are some of the most common uses for ELVANOL™ in this industry, as well as frequently used product grades and typical application methods. ELVANOL™ in the Paper Industry SURFACE PROPERTIES Surface Printing IMPROVED BY ELVANOL™ ELVANOL™ gives paper and paperboard excellent printabili- ty, smoothness and print gloss. The oil and solvent resistant The use of ELVANOL™ in size press and calender stack enhanc- properties keep ink from penetrating into the paper and allow es drastically the strength and barrier properties of paper. clear, glossy printing with outstanding print clarity. Surface Barrier APPLICATIONS WITH PIGMENTS ELVANOL™ polyvinyl alcohol is one of the strongest water- OR OPTICAL BRIGHTENERS borne film formers commercially available for the paper industry. It is chemically resistant to oil, grease, wax, organic Pigmented Size Press solvents, and shows high water resistance. The grade of ELVA- ELVANOL™ is an effective binder in coating formulations at NOL™ selected is governed by the end-use properties needed, the size press. Because of its binding power, ELVANOL™ can be application equipment, and post-dryer capabilities of the pa- used to replace starch on a 1-to-3 basis. per machine or off-machine coater. ELVANOL™ is for example With the incorporation of ELVANOL™ and reduced level of an excellent carrier for fluorochemicals in oil and grease binder in the pigmented size, the optical and surface proper- barrier applications. ties are improved over a clearsize, uncoated sheet. ELVANOL™ 70-06, 90-50 and 71-30 are fully hydrolyzed grades The following advantages have been demonstrated using that give superior water resistance. The water resistance of ELVANOL™ in pigmented size applications: ELVANOL™ grades can be further improved using conventional crosslinking agents like salts of multivalent ions, aminoplast ▪ Excellent way to optimize costs for fillers or fibres resins and aldehyde derivatives. ▪ Improved opacity and brightness ▪ Improved drying and uniformity of moisture profile Surface Strength ▪ Reduced calendar loading to achieve surface smoothness Films made of ELVANOL™ are much stronger than those made ▪ Uniform ink receptivity, reduces two-sidedness of starch alone. ELVANOL™ based surface sizes with concen- ▪ Reduced binder reduces mottle trations as low as 10 percent provide a surface that resists ▪ Economical method to reduce sheet porosity surface abrasion and cracking and improves folding and ▪ Holdout and smoothness to the topcoat bursting strength. ▪ Coatings Surfaces sized with starch that need scuff resistance or sur- face pick resistance will benefit from incorporating ELVANOL™. ELVANOL™ has stronger binding power than acrylic latex, The strong film with excellent binding properties ties the styrene butadiene, soy protein, casein, and starches. It can fibers and the surface debris to the paper or paperboard sur- therefore be used in paper coating formulations to partially face to reduce linting and dusting. This helps to keep offset replace the binder or to increase the pigment to binder ratio. printing blankets cleaner and reduces press downtime. The strength and moisture resistance of ELVANOL™ surface treat- Optical Brighteners ment can also improve curl control. Fluorescent whitening agents (FWAs) are commonly used in The binding strength of ELVANOL™ allows costly fibre to coated offset papers to increase the brighteness of Paper. be economically replaced with filler and still maintain the The use of 0.5 to 2.5 parts by weight of ELVANOL™ polyvinyl strength of the paper. Similarly, the hardwood or recy- alcohol based on 100 parts of pigment, results in a whitening cled fraction of paper can be increased, while maintaining effect that is significantly better than that with FWA alone. strength and printability properties with ELVANOL™ applied as Using ELVANOL™ PVOH as carrier for optical brightening agent, a surface treatment. the dosage of the conventional carrier like starch and casein can be reduced significantly. COMPATABILITY Solutions of ELVANOL™ PVOH are compatible with most of the common materials used in paper-making and with size addi- tives such as modified starches, alginates, sodium CMC, wax emulsions and defoamers. Sizes made from ELVANOL™ and modified starch are generally stable at room temperature with no agitation up to 24 hours before phase separation takes place. – 2 – ELVANOL™ in the Paper Industry ELVANOL™ in the Paper Industry TYPICAL PRODUCT GRADES USED IN THE PAPER INDUSTRY The most common grades of Kuraray ELVANOL™ polyvinyl alcohol used in the paper industry are: ELVANOL™ 71-30 ELVANOL™ 80-18 ELVANOL™ 90-50 Medium viscosity, fully Medium viscosity, fully Medium-to-low viscosity, fully hydrolyzed PVOH hydrolysed copolymer hydrolyzed PVOH Uses include: Uses include: Uses include: ▪ FWA and optical brightener ▪ FWA and optical brightener ▪ FWA and optical brightener carrier carrier carrier. ▪ Surface sizing. Controls back- ▪ Superior barrier for grease- ▪ Grease and water resistance. side lint and surface debris proof packaging ▪ Excellent coating binder. ▪ Controls dusting and picking on ▪ High solid coatings and sizings ▪ Combines efficient binding high filler content papers ▪ Compatible with starch with excellent high shear ▪ Grease proofing reprographic rheology. papers ▪ Controls backside lint and ▪ High gloss ink printing surfaces surface debris. ▪ Compatible with starch ELVANOL™ 85-82 ▪ Provides superior holdout and and CMC Medium viscosity, fully coating appearance properties ▪ excellent film fomation hydrolysed copolymer for clay coated recycle board. ▪ Compatible with modified Uses include: starches ▪ Higher brightness than starch ELVANOL™ 75-15 and sodium CMC as carrier Medium to low viscosity, fully ▪ Increase folding and bursting hydrolysed copolymer strength ▪ High creping aid Uses include: ▪ Higher water resistance than ▪ Higher whiteness than with starch FWA alone ▪ High dry strength additive ▪ Excellent binding properties to reduce linting ▪ Superior creping aids ▪ High solid coatings and sizings ▪ Reinforcement of starch per- formance in paper and paper- board – 3 – Adding value to your products – worldwide Helsinki Frankfurt Merrillville Hartlebury Nizhny Novgorod Beijing Paris Wilmington Milano Qingdao Tokyo Osaka Houston Shanghai Mexiko City Americas Europe Asia Barranquilla Bangkok Mumbai Singapore New Delhi São Paulo Buenos Aires Kuraray Headquarters Kuraray Sales Offices Kuraray Production Sites Kuraray Research & Development KURARAY POVAL™, EXCEVAL™, ELVANOL™ and films. Many of our polymers are food contact- MOWIFLEX™ are the trademarks for polyvinyl approved and thus suitable for food applica- alcohols made by Kuraray. Their key charac- tions. Ecologically KURARAY POVAL™ is advanta- teristics — outstanding film-forming properties geous due to its biodegradability and the fact and high binding strength — add real value to that combustion does not generate residues. It is your products. Our polymers are water-soluble, available in various particle sizes from granules highly reactive, crosslinkable and foamable. to fine powders. They have high pigment binding capacity, pro- Kuraray produces its wide range of KURARAY tective colloid characteristics and thickening POVAL™ grades in Japan, Singapore, Germany effects. The physical and chemical properties and the USA. Kuraray’s global production and ser- of KURARAY POVAL™ make it ideal for a wide vice network make us your partner of choice for variety of applications, ranging from adhe- innovative high-quality PVOH resins. sives through paper and ceramics to packaging KURARAY – Here to Innovate. Kuraray America, Inc. Kuraray Europe GmbH Kuraray Asia Pacific Pte., Ltd. Kuraray China Co., Ltd. 2625 Bay Area Blvd., Philipp-Reis-Str. 4 250 North Bridge Road Unit 2207, 2 Grand Gateway Suite 600 Houston, TX77058 65795 Hattersheim am Main, #10-01/02 Raffles City Tower 3 Hongqiao Road, Xuhui Dis- United States of America Germany Singapore 179101 trict, Shanghai 200030, China Phone: +1 800 423 9762 Phone: +49 69 305 85 351 Phone: +65 6337 4123 Phone: +86 21 6119 8111 [email protected] [email protected] [email protected] [email protected] Head Office: Kuraray Co., Ltd. Ote Center Bldg. 1-1-13, Otemachi Chiyoda-ku Tokyo 100-8115, Japan Phone: +81 3 67 01 1000 [email protected] 08/2019 www.KURARAY-POVAL.com.
Load more

Recommended publications
  • Certain Stilbenic Optical Brightening Agents from China and Taiwan
    Certain Stilbenic Optical Brightening Agents from China and Taiwan Investigation Nos. 731-TA-1186-1187 (Final) Publication 4322 May 2012 U.S. International Trade Commission Washington, DC 20436 U.S. International Trade Commission COMMISSIONERS Deanna Tanner Okun, Chairman Irving A. Williamson, Vice Chairman Daniel R. Pearson Shara L. Aranoff Dean A. Pinkert David S. Johanson Robert B. Koopman Acting Director of Operations Staff assigned Cynthia Trainor, Investigator Philip Stone, Industry Analyst Aimee Larsen, Economist Michele Breaux, Research Assistant Charles Yost, Accountant Steven Hudgens, Senior Statistician Charles St. Charles, Attorney James McClure, Supervisory Investigator Address all communications to Secretary to the Commission United States International Trade Commission Washington, DC 20436 U.S. International Trade Commission Washington, DC 20436 www.usitc.gov Certain Stilbenic Optical Brightening Agents from China and Taiwan Investigation Nos. 731-TA-1186-1187 (Final) Publication 4322 May 2012 CONTENTS Page Determinations ................................................................. 1 Views of the Commission ......................................................... 3 Part I: Introduction ............................................................ I-1 Background .................................................................. I-1 Summary data................................................................ I-1 Statutory criteria and organization of the report...................................... I-2 Statutory criteria
    [Show full text]
  • Optical Brightening Compositions for High Quality Inkjet Printing
    (19) & (11) EP 2 192 230 A1 (12) EUROPEAN PATENT APPLICATION (43) Date of publication: (51) Int Cl.: 02.06.2010 Bulletin 2010/22 D21H 21/30 (2006.01) B41M 5/52 (2006.01) C09D 11/00 (2006.01) (21) Application number: 08170098.1 (22) Date of filing: 27.11.2008 (84) Designated Contracting States: • Klein Cédric AT BE BG CH CY CZ DE DK EE ES FI FR GB GR 67170 Brumath (FR) HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT • Puddiphatt David RO SE SI SK TR 4203 Grellingen (CH) Designated Extension States: • Skaggs, Benny AL BA MK RS Springboro, OH Ohio 45066 (US) (71) Applicants: (74) Representative: Jacobi, Carola et al • Clariant International Ltd. Clariant Produkte (Deutschland) GmbH 4132 Muttenz (CH) Group Intellectual Property • International Paper Company Am Unisys-Park 1 Loveland, OH 45140 (US) 65843 Sulzbach (DE) (72) Inventors: • Jackson, Andrew Clive 4142 Münchenstein BL (CH) (54) Optical brightening compositions for high quality inkjet printing (57) The instant invention relates to liquid compositions comprising derivatives of diaminostilbene, binders and ink fixing agents such as divalent metal salts for the optical brightening of substrates suitable for high quality ink jet printing. EP 2 192 230 A1 Printed by Jouve, 75001 PARIS (FR) EP 2 192 230 A1 Description [0001] The instant invention relates to liquid compositions comprising derivatives of diaminostilbene, binders and divalent metal salts for the optical brightening of substrates suitable for high quality ink jet printing. 5 BACKGROUND OF THE INVENTION [0002] Ink jet printing has in recent years become a very important means for recording data and images onto a paper sheet.
    [Show full text]
  • Government Paper Specification Standards
    Government March 2011 No. 12 Government March 2011 No. 12 Printed on recycled paper For sale by the Superintendent of Documents, U.S. Government Printing Office Internet: bookstore.gpo.gov Phone: toll free (866) 512-1800; DC area (202) 512-1800 F1ax: (202) 512-2104 Mail: Stop IDCC, Washington, DC 20402-000 ISBN 978-0-16-088382-8 U.S. GOVERNMENT PRINTING OFFICE WILLIAM J. BOARMAN Keeping America Informed I www.gpo.gov Public Printer of the United States March 16, 2011 The Honorable Joseph R. Biden The President of the Senate The Honorable John A. Boehner The Speaker of the House of Representatives Sirs: I have the honor to transmit herewith the Annual Report of the U.S. Government Printing Office (GPO) for the fiscal year ending September 30, 2010. The report contains the results of an audit of GPO’s financial statements conducted by an independent accounting firm. Respectfully submitted, WILLIAM J. BOARMAN Public Printer 732 North Capitol Street, NW, Washington, DC 20401-0001 I [email protected] TABLE OF CONTENTS Advisory Council on Paper Specifications ………………………………………… v Introduction …………………………………………………………………………. vii Recycled Fiber Content and Permanent Paper Standards ………...……….…………. ix Part 1. Specifications ………………...……………………………………………... 1 Runnability Requirements for Paper Used in a Federal Printing Plant ………………. 3 Printing Papers ………………………………………………………………………. 5 JCP A15: Newsprint JCP A25: Heat-Set Web Offset Machine-Finish Book JCP A50: Machine-Finish Book End JCP A55: Heat-Set Web Offset Book JCP A60: Offset Book JCP A61: No. 1 Offset
    [Show full text]
  • Catalogue Vol 1
    CATALOGUE VOL 1. Papers Boards Synthetics Official Distributor Conservation By Design Arte y Memoria was founded in Barcelona in 1999 bringing together a group of experts of paper conservation and preservation since then we provide the Spanish and Portuguese market with our products and services. Now we are proud to offer the most comprehensive product portfolio ever produced and represented in Turkey. We have combined our interest in cutting edge preservation technology with more traditional quality products that are becoming harder to find. You will notice we have added many new items to the range and have developed several systems in conjunction with leading Museums, Galleries, Conservators and Archivists. The team at Arte y Memoria thanks you for your continued support and welcome your opinion and suggestions to improve our product range and customer service. As ever if you need something that is not in this catalogue please contact us. We hope you find this catalogue an informative and practical reference for purchasing your conservation and archival products from Arte y Memoria. Placing an order How we do business Our friendly and professional staff are happy to receive your orders and answer any queries. To help direct your call we have our sales team Turkish office: Turkish Contact Arte & Memoria Türkiye Paz. Diş Tic. Dan. Ltd. Şti Tel + Fax (+90) 212 292 5518 Büyükdere Caddesi [email protected] Altan Erbulak Sokak Atasoy www.arteymemoria.com İş Mrk No:3 Kat:1 Gayrettepe 34394 İstanbul Other countries: Tel + Fax (+90) 212 292 5518 Tel (+34) 938 125 378 HQ office: Fax (+34) 938 871 205 Arte & Memoria, S.L.
    [Show full text]
  • Effect of Optical Brightening Agent (OBA) on Bleaching Process on Paper of Eucalyptus Kraft Pulp
    Natural Resources, 2013, 4, 378-382 http://dx.doi.org/10.4236/nr.2013.45046 Published Online September 2013 (http://www.scirp.org/journal/nr) Effect of Optical Brightening Agent (OBA) on Bleaching Process on Paper of Eucalyptus Kraft Pulp Bianca Moreira Barbosa1*, Fernando Gomes2, Jorge Colodette2, Danila Carvalho1, Mauro Manfredi1 1Department of Chemistry, Federal University of Viçosa, Viçosa, Brazil; 2Department of Forestry Engineering, Federal University of Viçosa, Viçosa, Brazil. Email: *[email protected] Received June 23rd, 2013; revised July 20th, 2013; accepted July 31st, 2013 Copyright © 2013 Bianca Moreira Barbosa et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. ABSTRACT In integrated factories of pulp and paper, the bleaching control is made by kappa number and/or brightness. However, the product paper is evaluated and valued for its whiteness. The level of final brightness of pulp certainly affects the demand for optical brighteners in paper manufacturing, nevertheless, there is not a direct correlation between consump- tion of optical brightener and final brightness, being the method of bleaching pulp, especially from the final stage of bleaching, also important in relation to this demand. Therefore, this study aimed to evaluate the potential of using the parameter whiteness as a tool to control bleaching pulp, instead of the traditional brightness and evaluate the impacts of different methods of bleaching and the pulp final brightness level in action of optical brighteners, to improve their per- formance. It was observed that the whiteness and brightness of the pulp are highly correlated and that the control of the bleaching plant can be done by any one of these two parameters.
    [Show full text]
  • Kodak Fiber Base Black-And-White Papers Introduction
    KODAK FIBER BASE BLACK-AND-WHITE PAPERS INTRODUCTION........................................................................................................3 CHAPTER FOUR: MAKING THE FIBER BASE BLACK AND WHITE SURFACES..........................................................................................43 CHAPTER ONE: KODAK ALPHABET SOUP: WHATS IN A NAME?.........................4 WEIGHT (THICKNESS) 43 THE 1880s TO THE 1910s 5 TEXTURE 45 THE 1920s 7 -SMOOTH THE 1930s 8 -TWEED THE 1940s 9 -TAPESTRY 1940 SURFACE AND CONTRAST CHART 11 -ROUGH QUESTIONS ABOUT LETTERS AND MEANINGS 12 -FINE-GRAINED -SILK CHAPTER TWO: PAPERMAKING FOR BLACK-AND-WHITE PAPERS...................14 -SUEDE PAPERMAKING AT KODAK 14 SHEEN 52 THE PAPERMAKING PROCESS 15 TINT 53 ILLUSTRATION ONE: THE PAPERMAKING PROCESS 17 PRE-1940 SURFACES 55 LEARNING TO MAKE RAW BASE PAPER 18 EXPANSION AND CRISIS 20 CHAPTER FIVE: CAN A DIFFERENCE BE SEEN? CAN A DIFFERENCE BE FROM WHITE RAGS TO HIGH ALPHA WOOD PULP 21 MEASURED? DOES IT MAKE A DIFFERENCE?.....................................................56 PROCESS AND IMPROVEMENT 24 TEXTURE 56 EXPANSION IN THE USE OF WOOD PULPS 27 SHEEN 57 THE GLORY DAYS 29 TINT 57 THE END OF AN ERA 31 GLOSSARY...............................................................................................................58 CHAPTER THREE: BARYTA COATING FOR BLACK-AND-WHITE PAPERS...........32 BARYTA COATING COMES TO KODAK 32 WHAT IS BARYTA AND HOW IS IT MADE? 33 THE BARYTA COATING PROCESS 36 ILLUSTRATION TWO: BARYTA COATING DETAIL 37 ILLUSTRATION THREE: THE SUPERCALENDERING PROCESS 40 THE RISE AND FALL OF BARYTA-COATED PAPERS 42 ACKNOWLEDGEMENTES: Since this Second Edition builds on both the First Edition (2007) and on an earlier work by the same author (History of the Paper Mills at Kodak Park, 2006), continuing thanks go to the many people previously identified who provided assistance, information, and resources for those efforts.
    [Show full text]
  • Understanding Paper Brightness
    Printer Technical Service Understanding Paper Brightness Introduction Brightness quantifies the percentage of blue light reflected from the surface of paper as measured at a specific effective wavelength of 457 nanometers (with a half-peak bandwidth of 44 nm).1 Brightness does not indicate the color or relative shade of the paper since a single number reflective value measured at 457 nm ignores all other wavelengths of light reflected across the visible spectrum. A brighter paper, therefore, reflects a greater amount of blue light than does the surface of a less bright paper. Three different brightness measurement methodologies are used worldwide. Each of these methods will produce a different brightness number when used to measure the same paper sample. It is, therefore, important to understand basic concepts of each of the three testing methods, including photometric principles, characteristics of the illuminants, and illumination/observer—reflected light measurement geometries. Due to differences in illuminants and illumination/reflected light measurement geometries, there are no direct correlations between brightness measurements produced by the three methods. 1 Monitoring the photometric curve response throughout the pulp bleaching cycle shows that changes are greatest in the short wavelength area (the violet/blue region of the visible spectrum). Therefore, 457 nanometers has been determined to be an appropriate wavelength for optimal measurement of light reflection to monitor pulp and paper brightness. Sappi North America 1 © 2017 Sappi North America. All Rights Reserved. Printer Technical Service The three paper brightness standards are briefly described as follows. TAPPI (T 452) / GE Brightness The Technical Association of the Pulp and Paper Industry (TAPPI) has authorized method T 452 for use in determining the brightness of paper.
    [Show full text]
  • To Brighten Or Not to Brighten Scientifically Examining the Controversy Over OBA Inkjet Media Additives
    InThink the TrenchesInk ByB y rickr a y w williamsO r k , P h .D. To Brighten or Not to Brighten Scientifically examining the controversy over OBA inkjet media additives. Ray Work, Ph.D., heads their inkjet coatings are not white but coating materials result in excellent print Work Associates, a consul- rather cream or tan in color. This color is longevity with little risk of yellowing, due AND FINISHING PRINTING DIGITAL tant firm specializing in frequently referred to as “natural.” Only to the OBAs fading over the life of the inkjet printing technologies, with the addition of OBAs is a truly white print. In addition, they do not interact applications and markets. or bright white media possible. with the pigments in the inkjet inks pro- He worked for more than With exposure to light and heat, over vided by the printer manufacturers. 28 years in research, research management, time the OBAs can lose their ability to business development and business manage- fluoresce and add the blue light to the WHY BRIGHT WHITE? ment with DuPont. Dr. Work holds a Ph.D. reflectance spectrum. The result is that Inkjet inks contain transparent-col- in physical inorganic chemistry from the the media will revert to the original color ored dyestuffs in the form of pigment University of New Orleans. He can be reached of the materials that make up the media particles. They are small and do not scat- via e-mail at [email protected] or and its coatings. It is unlikely that these ter light. They are used to provide “sub- visit his Web site www.workassoc.com.
    [Show full text]
  • Ink Jet Inks and Substrates - Novel Approaches for Their Physical and Optical Properties Characterization
    Western Michigan University ScholarWorks at WMU Dissertations Graduate College 7-2006 Ink Jet Inks and Substrates - Novel Approaches for Their Physical and Optical Properties Characterization Veronika Lovell Western Michigan University Follow this and additional works at: https://scholarworks.wmich.edu/dissertations Part of the Engineering Commons Recommended Citation Lovell, Veronika, "Ink Jet Inks and Substrates - Novel Approaches for Their Physical and Optical Properties Characterization" (2006). Dissertations. 967. https://scholarworks.wmich.edu/dissertations/967 This Dissertation-Open Access is brought to you for free and open access by the Graduate College at ScholarWorks at WMU. It has been accepted for inclusion in Dissertations by an authorized administrator of ScholarWorks at WMU. For more information, please contact [email protected]. INK JET INKS AND SUBSTRATES - NOVEL APPROACHES FOR THEIR PHYSICAL AND OPTICAL PROPERTIES CHARACTERIZATION by Veronika Lovell A Dissertation Submitted to the Faculty of The Graduate College in partial fulfillment of the requirements for the Degree of Doctor of Philosophy Department of Paper Engineering, Chemical Engineering, and Imaging Dr. Paul D. Fleming, HI, Advisor Western Michigan University Kalamazoo, Michigan July 2006 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. INK JET INKS AND SUBSTRATES - NOVEL APPROACHES FOR THEIR PHYSICAL AND OPTICAL PROPERTIES CHARACTERIZATION Veronika Lovell Western Michigan University, 2006 Undoubtedly, within the last couple of decades, the progress in non impact printing technologies has grown to an enormous level. In order to keep the development of this non impact printing method to grow even more, technicians, researchers and educators must continue in conducting investigation and provoking new ideas and questions that will lead to new outcomes and expansion of ink jet printing.
    [Show full text]
  • Twentieth Century Paper Quality a Survey Carried out at the National Archives of Australia Ian Batterham* and Caroline Milne
    Twentieth Century paper quality A survey carried out at the National Archives of Australia Ian Batterham* and Caroline Milne ABSTRACT The holdings of the National Archives of Australia are largely paper-based. On a very general estimate it currently holds 35 million paper-based items which roughly equates with one billion sheets of paper. This holding will continue to grow well into the future as agencies transfer their older paper-based records into custody. Even as agencies move towards digital recordkeeping the National Archives will continue to be responsible for preserving a very large and deteriorating asset. Because of the size of the Archives’ paper-based collection it would be useful to be able to break it down into categories of quality, which may be based on elements such as the date of the paper, the use the paper was produced for (e.g. typing paper, writing paper, coloured paper, telex paper), or its provenance (e.g. which Commonwealth department produced the document). This would help inform decisions about which records to target for storage improvements and other preservation actions. To explore these issues, a survey was undertaken in 2013 to observe how paper quality varied over the period covered by the bulk of the Archives’ collection, which largely comprises material from Federation onwards. The survey looked at quality-based factors such as pH level and the presence of lignin and alum. Other additives were also recorded, including gelatine, clay and optical brighteners. Additionally, a note was made of any watermarks found, as an aid to better understanding patterns of importation and local manufacture.
    [Show full text]
  • Color Managing for Papers Containing Optical Brightening Agents
    Rochester Institute of Technology RIT Scholar Works Theses 12-2014 Color Managing for Papers Containing Optical Brightening Agents R. Scott Millward Follow this and additional works at: https://scholarworks.rit.edu/theses Recommended Citation Millward, R. Scott, "Color Managing for Papers Containing Optical Brightening Agents" (2014). Thesis. Rochester Institute of Technology. Accessed from This Thesis is brought to you for free and open access by RIT Scholar Works. It has been accepted for inclusion in Theses by an authorized administrator of RIT Scholar Works. For more information, please contact [email protected]. Color Managing for Papers Containing Optical Brightening Agents by R. Scott Millward A Thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in the School of Media Sciences in the College of Imaging Arts and Sciences of the Rochester Institute of Technology December 2014 Primary Thesis Advisor: Professor Robert Chung Secondary Thesis Advisor: Professor Robert Eller School of Media Sciences Rochester Institute of Technology Rochester, New York Certificate of Approval Color Managing for Papers Containing Optical Brightening Agents This is to certify that the Master’s Thesis of R. Scott Millward has been approved by the Thesis Committee as satisfactory for the Thesis requirement for the Master of Science degree at the convocation of December 2014 Thesis Committee: __________________________________________ Primary Thesis Advisor: Professor Robert Chung __________________________________________ Secondary Thesis Advisor: Professor Robert Eller __________________________________________ Graduate Director: Professor Christine Heusner __________________________________________ Administrative Chair, SMS: Professor Twyla Cummings Acknowledgements I would like to recognize and thank Professor Robert Chung, my primary thesis advisor, for his patience and support throughout my research and the writing of this thesis.
    [Show full text]
  • Wo 2009/118248 A2
    (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date 1 October 2009 (01.10.2009) WO 2009/118248 A2 (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every D21H 17/66 (2006.0 1) D21H 21/30 (2006.0 1) kind of national protection available): AE, AG, AL, AM, D21H 21/16 (2006.01) AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, (21) International Application Number: EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, PCT/EP2009/052921 HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, (22) International Filing Date: KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, 12 March 2009 (12.03.2009) MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, (25) Filing Language: English SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, (26) Publication Language: English UG, US, UZ, VC, VN, ZA, ZM, ZW. (30) Priority Data: (84) Designated States (unless otherwise indicated, for every 08102906.8 26 March 2008 (26.03.2008) EP kind of regional protection available): ARIPO (BW, GH, 0817 1223.4 10 December 2008 (10.12.2008) EP GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, 0817 1480.0 12 December 2008 (12.12.2008) EP ZW), Eurasian (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), European (AT, BE, BG, CH, CY, CZ, DE, DK, EE, (71) Applicant (for all designated States except US): CLARI- ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, ANT INTERNATIONAL LTD [CH/CH]; MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, TR), Rothausstrasse 61, CH-4132 Muttenz 1 (CH).
    [Show full text]