SIST EN 13966-1:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bestimmung des Auftragswirkungsgrades von Spritz- und Sprühgeräten für Beschichtungsstoffe - Teil 1: FlächenbeschichtungDétermination de l'efficacité de transfert des équipements d'atomisation/pulvérisation pour produits de revetement liquides - Partie 1: Panneaux plansDetermination of the transfer efficiency of atomising and spraying equipment for liquid coating materials - Part 1: Flat panels87.100Oprema za nanašanje premazovPaint coating equipmentICS:Ta slovenski standard je istoveten z:EN 13966-1:2003SIST EN 13966-1:2003en01-julij-2003SIST EN 13966-1:2003SLOVENSKI
STANDARD



SIST EN 13966-1:2003



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13966-1April 2003ICS 87.100English versionDetermination of the transfer efficiency of atomising andspraying equipment for liquid coating materials - Part 1: FlatpanelsDétermination de l'efficacité de transfert des équipementsd'atomisation/pulvérisation pour produits de revêtementliquides - Partie 1: Panneaux plansBestimmung des Auftragswirkungsgrades von Spritz- undSprühgeräten für Beschichtungsstoffe - Teil 1:FlächenbeschichtungThis European Standard was approved by CEN on 28 November 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13966-1:2003 ESIST EN 13966-1:2003



EN 13966-1:20032ContentsPageForeword.31Scope.42Normative references.53Terms and definitions.54Principle of test.65Test procedure.66Test and measurement methods.86.1Test environment.86.2Determination of coating material physical properties.86.3Test sheet and background panel.96.4Test rig configuration.116.5Atomiser characteristics.116.6Application of the coating material to the test sheet.126.7Coating finish quality and performance.126.8Coating film drying / curing.126.9Determination of coating material mass.126.10Determination of mass of coating material delivered by the atomiser.137Calculation.138Test report.149Accuracy.15Annex A (normative)
Measurement tolerances.16Annex B (informative)
Example calculations.17Annex C (content and structure normative; lay-out informative) Test summary form for flat panelcoating.18Bibliography.20SIST EN 13966-1:2003



EN 13966-1:20033ForewordThis document (EN 13966:2003) has been prepared by Technical Committee CEN/TC 271, "Surface treatmentequipment - Safety", the secretariat of which is held by DIN.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by October 2003, and conflicting national standards shall be withdrawn at the latestby October 2003.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 13966-1:2003



EN 13966-1:20034IntroductionTransfer efficiency is a performance parameter that is used to express the effectiveness of spraying or atomisingequipment in transferring a coating material to the surface of an object.Transfer efficiency is defined as the ratio of coating solids laid down on the surface of an object and forming the dryfilm to the total solid content of the coating material delivered by the atomising and spraying equipment, expressedas a percentage.The use of atomising and spraying equipment with a high transfer efficiency therefore has economic andenvironmental benefits.A standard and reproducible procedure for determining the transfer efficiency is required to:¾ enable a reliable comparison of atomising and spraying equipment through transfer efficiency data quoted bymanufacturers;¾ provide data to show that the atomising and spraying equipment meets minimum
values stipulated in health,safety and environmental legislation.1 ScopeThis European Standard specifies a laboratory procedure for determining the transfer efficiency of atomising andspraying equipment for the application of liquid coating materials onto flat panels. A second part (to be prepared)will cover coating material application to other substrate geometries and provide a method for the determination oftransfer efficiency for atomising and spraying equipment with electrostatic support.This standard applies to the determination of the transfer efficiency of atomising and spraying equipment, such as,but not limited to:¾ conventional air atomiser (high air pressure);¾ HVLP-atomiser (high volume low pressure);¾ LVLP-atomiser (low volume low pressure);¾ airless atomiser (hydraulic pressure);¾ air assisted airless atomiser;¾ vibratory or rotary atomiser (bells);¾ electrostatic supported atomiser.Two methods of determination are included in the standard.The transfer efficiency value resulting from the application of this standard procedure expresses the potentialperformance of atomising and spraying equipment for comparison of different types or models. The value may ormay not be attained in use, where the working conditions and operator practice are likely to differ from those of thestandard test method.The determined transfer efficiency is valid only in conjunction with the parameters shown in the test summary form,see annex C.SIST EN 13966-1:2003



EN 13966-1:200352 Normative referencesThis European Standard incorporates, by dated or undated reference, provisions from other publications. Thesenormative references are cited at appropriate places in the text and the publications are listed hereafter. For datedreferences, subsequent amendments to or revisions of any of these publications apply to the European Standardonly when incorporated in it by amendment or revision. For undated references, the latest edition of the publicationreferred to applies (including amendments). EN 971-1, Paints and varnishes: Terms and definitions for coating materials.
Part 1: General terms EN 1953, Atomising and Spraying Equipment for Coating Materials - Safety requirements prEN 12215, Coating plants - Spray booths for application of organic liquid coating materials - Safety requirements prEN 13355, Coating plants - Combined booth – Safety requirements EN 21512, Paints and Varnishes: Sampling of products in liquid or paste form EN ISO 1513, Paints and Varnishes - Examination and preparation of samples for testing.(ISO 1513:1992) EN ISO 2431, Paints and varnishes - Determination of flow time by use of flow cups (ISO 2431:1993, includingTechnical Corrigendum 1:1994). EN ISO 3219, Plastics - Polymers/resins in the liquid state or as emulsions or dispersions - Determination ofviscosity using a rotational viscometer with defined shear rate (ISO 3219:1993) EN ISO 3251, Paints and varnishes - Determination of non-volatile matter of paints, varnishes and binders forpaints and varnishes (ISO 3251:1993) ISO 2811-1, Paints and varnishes - Determination of density - Part 1: Pyknometer method ISO 2811-2, Paints and varnishes - Determination of density - Part 2: Immersed body (plummet) method ISO 2811-3, Paints and varnishes - Determination of density - Part 3: Oscillation method ISO 2811-4, Paints and varnishes - Determination of density - Part 4: Pressure cup method ISO 2884, Paints and varnishes - Determination of viscosity using rotary viscometer ISO 9944, Plastics; phenolic resins; determination of electrical conductivity of resins extracts3 Terms and definitionsFor the purposes of this standard, the terms and definitions given in EN 971-1 apply. For the purposes of thisstandard, the following terms and definitions also apply:3.1application timetime during which coating material is applied to the test sheet during the transfer efficiency test3.2atomising and spraying equipmentany type of device which can be used to atomise coating materials. Atomising may be achieved by air,hydromechanically (airless) with or without air assistance, or by centrifugal forces such as rotating bells or discs, asdefined in EN 19533.3background panelrigid plate placed behind the test sheet to support it and enable a flat surface to be obtainedSIST EN 13966-1:2003



EN 13966-1:200363.4coating materialliquid product, pigmented or non pigmented, applied to a substrate, as defined in EN 971-13.5coating filmfilm possessing protective, decorative and/or other specific properties on a substrate, as defined in EN 971-13.6solid contentnon volatile portion of a coating material, as defined in EN 971-13.7spray patternvisual pattern width of the coating deposit on a vertical panel3.8stroke speedvelocity of spray pattern traverse across the face of the test sheet. This is equivalent to the velocity of travel of theatomiser relative to the test sheet. Either the atomiser or the test sheet can be moved3.9test rigstructure for supporting the background panel and maintaining the atomiser - test sheet distance constant3.10test sheetflat sheet of aluminium foil to which coating material is applied for the determination of the transfer efficiency3.11test method 1indirect method in which the mass of coating material delivered by the atomiser is determined from the fluid flowvolume. It can be done by measurement with a fluid flow meter or by calculation from gravimetric measurement.The atomiser spray pattern is fully developed before it reaches the edge of the test sheet and is maintainedconstant over the test width3.12test method 2direct method in which the mass of coating material delivered by the atomiser within the test sheet dimensions, isdetermined gravimetrically (by weighing). The atomiser is triggered on and off within the test sheet dimensions3.13transfer efficiencydefined as the ratio of the mass of coating material solids deposited on an object to the mass of coating materialsolids atomised, expressed as a percentage4 Principle of testThe transfer efficiency of atomising and spraying equipment is determined by measuring directly or indirectly themass of coating material solids delivered by the atomiser and the mass of dry coating material deposited on thetest sheet.5 Test procedureThe test procedure defines the steps to be carried out in the determination and the conditions under which the testis conducted as well as the minimum reporting requirements.A transfer efficiency determination for a particular atomiser consists of at least three independent and consecutivetests of the transfer efficiency under the same conditions.SIST EN 13966-1:2003



EN 13966-1:20037The atomiser transfer efficiency, under the prevailing conditions, is reported as the mean of the values obtained. Ifan individual test result differs from
the mean value by more than +/- 1% the cause of the variation should beinvestigated and the determination repeated. Step Action Reference 1 Record details of atomising and spraying equipment tobe tested. Use the form structure inannex C for recording data. 2 Record details of coating material to be used fortransfer efficiency test. see 6.2.1 3 Sample coating material for the test, thin and/or mixaccording to coating material manufacturerspecification. Record preparation details. see 6.2.2 4 Determine and record coating material solids content,viscosity and density. see 6.2.2 5 Set up the test rig to configure the atomiser, panel andsheet. see 6.4 6 Set atomising and spraying equipment to requiredsettings. see 6.5.2 7 Determine and record atomising and sprayingequipment dynamic parameters and coating materialcharacteristics. Measure the coating material flow rateand spray characteristics. Record coating material andair flow rate, atomiser stroke or test sheet traversespeed, to obtain required film thickness and theminimum/maximum dimensions of the spray pattern. see 6.5, 6.6 and 6.7. 8 Clean, dry and weigh the test sheets. Indelibly label testsheets and record identification numbers and weights. see 6.3 9 Measure and record test environmental conditions. see 6.1 10 Re-determine coating properties (as necessary).
11 Clean atomising and spraying equipment. Charge withcoating material and measure coating materialtemperature. Set equipment parameters and mount inthe test rig.
11a Method 1: Determine fluid flow rate see 6.5.3 11b Method 2: Measure and record initial weight of atomiserand coating material. see 6.10 12 Mount test sheet on background panel and assemble inthe test rig. see 6.3 and 6.4 13 Apply coating material to the test sheet. Record coatingmaterial temperature, application period for each testsheet and the distance between fluid outlet and testsheet. see 6.6 14 Remove the test sheet from the background paneltaking care to avoid loss of coating material.
15 Dry/stove the applied coating film. Record drying/curingtemperature and time. see 6.8 16
Allow the test sheet to cool to ambient temperatureunder clean dry conditions. Weigh the dry coated testsheet and record weight. The mass of deposited solidsis the difference in the weights of the coated anduncoated test sheet.
17a Method 1: Check coating material flow rate see 6.5.3 17b Method 2: Weigh atomising and spraying equipment. see 6.10SIST EN 13966-1:2003



EN 13966-1:20038Record the weight. 18 Check spray pattern uniformit
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