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printech, May, 2000
Re: new ink testing


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From:Robert Gifford(gifford@epd.engr.wisc.edu)
Date:Mon, 15 May 2000 20:10:11 -0500


>From: cpatters@flintink.com > >Dear AMR MAHMOYD EID > >In response to your request here is some information that I hope will be of >assistance > >Ink Troubleshooting - I will arrange to send you a copy of the Flint Ink - >Gravure Troubleshooting guide. This will provide details on how to resolve >problems on press > >Ink Specifications and Tolerances and Ink Testing - There are no ideal >specifications for gravure ink. The specifications will vary depending on >customer needs and requirements together with end use applications. > >The functional properties of an ink can be broadly divided into two >categories - physical ink properties and properties of the ink after it has >been printed. The items listed below were identified as properties >critical to the functioning of flexographic inks but they can be used >equally as well for gravure inks. (Further details can be obtained in the >following publication - FIRST Specifications (2nd edition) Flexographic >Technical Association 900 Marconi Avenue Ronkonkoma NY 11779 - 7202 USA) > >Core physical properties > >Fineness of grind - ASTM D1316 ASTM - American Society for the >Testing of Materials - www.astm.org >Viscosity - ASTM D1200, D4212 >Color - ASTM D1729, D2244 >Specific Gravity - ASTM 1475 >Solids - ASTM D4713 >pH (Water based inks only) - ASTM >Drying speed - ASTM D1640 > >Core printed properties > >Adhesion to non-porous substrates - ASTM D3359 >Gloss (Surface printed products) - ASTM D523 or E97 >Block/Set Off Resistance - ASTM D2793 >Opacity or Transparency - ASTM D2085 or TAPPI T425 >Rub or abrasion for all printed substrates - ASTM D5264-92 > >Important printed characteristics > >Coefficient of Friction or Slide Angle - ASTM D1894-95 and D4518 >Heat Resistance - No known test standard (See FIRST for details) >Flexibility - No known test standard (See FIRST for details) >Odor/Taint - ASTM E462 >Lamination Bond Strength - No known test standard (See FIRST for details) >Water Resistance - No known test standard (See FIRST for details) >Chemical Resistance - ASTM D1647 and D2248 >Lightfastness - ASTM D4459, G23 and G26 > >Environmental testing of inks - All data relevant to major environmental, >health and safety concerns of the ink should be supplied on the MSDS >(Material Safety Data Sheet)and technical data sheet which should be >supplied with the ink. > >Other web sites that will provide further information www.flintink.com and >www.gaa.org > >Regards > >Dr. Chris Patterson >Flint Ink > >If you require further information please contact > > >Chris Patterson >Flint Ink - North America >2675 Henkle Drive >Lebanon OH 45036 >cpatters@flintink.com > >or > >Chris Whitehead >Flint Ink - Europe >Vauxhall Industrial Estate >Wrexham,Clwyd, LL14 6UH >United Kingdom >



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