SIST EN 1939:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Klebebänder - Bestimmung der KlebkraftRubans auto-adhésifs - Détermination des caractéristiques du pouvoir adhésif linéaireSelf adhesive tapes - Determination of peel adhesion properties83.180LepilaAdhesivesICS:Ta slovenski standard je istoveten z:EN 1939:2003SIST EN 1939:2003en01-oktober-2003SIST EN 1939:2003SLOVENSKI
STANDARDSIST EN 1939:19971DGRPHãþD



SIST EN 1939:2003



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1939July 2003ICS 83.180Supersedes EN 1939:1996English versionSelf adhesive tapes - Determination of peel adhesion propertiesRubans auto-adhésifs - Détermination des propriétés derésistance au pelageKlebebänder - Bestimmung der KlebekraftThis European Standard was approved by CEN on 7 February 2003.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 1939:2003 ESIST EN 1939:2003



EN 1939:2003 (E)2ContentsPageForeword.31Scope.42Normative references.53Terms and definitions.54Significance and use.55Method 1 – Self adhesive tapes – Measurement of peel adhesion from stainless steel at anangle of 180°.66Method 2 – Self adhesive tapes - Measurement of peel adhesion from its own backing at anangle of 180°.87Method 3 Self adhesive tapes - Measurement of peel adhesion of double sided and transfertapes at an angle of 180°.108Method - 4 Self adhesive tapes - Measurement of adhesion of the liner to an adhesive tape atan angle of 180°.11Annex A (normative)
Self adhesive tapes – Measurement of peel adhesion from a surface at lowtemperature.13Annex B (normative)
Self adhesive tapes – Measurement of peel adhesion from a surface at an angleof 90°.14SIST EN 1939:2003



EN 1939:2003 (E)3ForewordThis document (EN 1939:2003) has been prepared by Technical Committee CEN /TC 253, "Self adhesive tapes",the secretariat of which is held by AFNOR.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 January 2004 and conflicting national standards shall be withdrawn at the latest byJanuary 2004.In this European Standard the annexes A and B are normative.This document supersedes EN 1939:1996.This European Standard has been revised in conjunction with AFERA (Association of European self Adhesivetapes Manufacturers) in Europe and PSTC (Pressure Sensitive Tape Council) in USA with the purpose to producea standard which will be acceptable in due course by ISO.Key changes from EN 1939:1996 are:¾ steel plates are revised to readily available, industry standard steel with a smoother surface finish;¾ a lighter, rubber coated roller;¾ dwell time before testing is more realistically specified at one minute;¾ test data from the revised test will be generally lower than from EN 1939:1996.NOTEThe lower value obtained by the new method does not reflect any change in product performance.The scope of the standard has also been extended to include:¾ peel adhesion at an angle of 90°;¾ peel adhesion of a liner to an adhesive tape.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 1939:2003



EN 1939:2003 (E)41 ScopeThis European Standard specifies a series of methods for the determination of peel adhesion properties of selfadhesives tapes.Annexes A and B specify further variations in the testing protocol according to specific conditions.This European Standard contains:¾ Method 1:Self adhesive tapes – Measurement of peel adhesion from stainless steel at an angle of 180° ;¾ Method 2:Self adhesive tapes – Measurement of peel adhesion from its own backing at an angle of 180° ;¾ Method 3:Self adhesive tapes – Measurement of peel adhesion of double sided and transfer tapes at anangle 180° ;¾ Method 4:Self adhesive tapes – Measurement of adhesion of the liner to an adhesive tape at an angle of180°.Together with¾ Annex ASelf adhesive tapes – Measurement of peel adhesion from
a surface at low temperature ;¾ Annex BSelf adhesive tapes – Measurement of peel adhesion from a surface at an angle of 90°.A guide to the use of these methods and annexes is given in Table 1.Table 1 – Methods and annexesTemperature of testMethodAngle of peel23 °CLow temperatureMethod 1180°-Annex AAdhesion to steel90°Annex B-Method 2180°-Annex AAdhesion tobacking90°Annex B-Method 3180°-Annex AAdhesion ofdouble sided andtransfer tape90°Annex B-Method 4180°-Annex AAdhesion of liner90°Annex B-NOTE 1These methods provide a means of assessing the uniformity of the adhesionof a given type of self adhesive tape. The assessment may be within a roll of tape,between rolls or between production lots.NOTE 2Variations in the tape backing and adhesive affect the response. Thereforethese methods cannot be used to pinpoint the specific cause(s) of non uniformity.NOTE 3These test methods may not be appropriate to test tapes having eitherrelatively stiff backings, stiff liners or backing showing high stretch at low forces. Thesecharacteristics will result in a high variability for the test response which is not a trueindication of the real nature of the adhesive bond.SIST EN 1939:2003



EN 1939:2003 (E)52 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 10088-2, Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip for general purposes.EN 12481:2000, Self adhesive tapes - Terminology.3 Terms and definitionsFor the purposes of this European Standard the terms and definitions given in EN 12481:2000 and the followingterms and definitions apply.3.1peel adhesionforce required to peel a strip of adhesive tape from a specified substrate at a specified angle and speed3.2open side (adhesive)surface of the adhesive on a double sided tape which is exposed on normal unwinding or separation of the firstliner3.3closed side (adhesive)surface of the adhesive on a double sided tape which normally remains in contact with the release liner on normalunwinding or separation of the first liner3.4transfer tapeadhesive tape having two available pressure sensitive surfaces without the need for a carrier and with a releaseliner separating the adhesive surfaces. The adhesive may contain reinforcing material4 Significance and useThese test methods are tools for quality control use. Given specific self adhesive tape and a requirement in termsof the minimum or maximum value expected for this tape, the data from the test can be used in conjunction withacceptance criteria.Test methods 1, 2, 3, and Annexes A and B can show the relative bond strength of a given tape to one or moresurfaces (material and texture) as compared to the standard stainless steel panel. Substitution of representativesamples of materials in question for the standard steel panel would suffice to do this. Test methods 1, 2, 3, andAnnexes A and B cannot be used to compare two self adhesive tapes of the same type but of different manufacturefor their ability to adhere to a surface. This is because the measured peel force is not normalised for a fixed area ofstress. The area under stress varies with backing stiffness and adhesive rheology (firmness). Two different tapesseldom agree in these properties.Test method 4 can show the amount of force required to remove a liner that covers the adhesive side of a tape at aspecified peel rate. The force will be different at other peel rates.These test methods may not provide design information as there is usually no direct relationship between peeladhesion and any functional requirement.SIST EN 1939:2003



EN 1939:2003 (E)65 Method 1 – Self adhesive tapes – Measurement of peel adhesion from stainless steelat an angle of 180°5.1 PrincipleThe method 1 gives a measure of the force required to remove at an angle of 180° an adhesive tape which hasbeen applied to a stainless steel panel.A length of adhesive tape is applied to a standard plate which is then fixed vertically in one clamp of a tensiletesting machine. The other clamp of the machine pulls the free end of the adhesive tape at an angle of 180° to theplate.The adhesive strength is measured by the force required to peel the adhesive tape continuously from the plate, theline of separation being perpendicular to the direction of the applied force.5.2 Materials5.2.1Absorbent cleaning material: surgical gauze, cotton wool or tissue. To be suitable, materials shall be lintfree during use, absorbent, contain no additives that are soluble in the solvents listed in 5.2.2 and made exclusivelyfrom virgin materials.5.2.2One or more of the following solvents:¾ diacetone alcohol non-residual grade (4-hydroxy-4-methyl-2-pentanone);¾ methanol;¾ methyl ethyl ketone;¾ acetone;¾ n-heptane;¾ a mixture of n-heptane and a fluorinated hydrocarbon such as refrigerant (suitable when toxicity or flammabilityrestrictions apply).Solvents shall be of general purpose chemical grade and held in a suitable dispensing system.5.3 Apparatus5.3.1 Test piece cutterAn appropriate test piece cutter shall hold two single edge razor blades in parallel planes a precise distance apart,to form a cutter of exact specimen width; two cutters, 12 mm and 24 mm cutting width, shall be available orappropriate alternatives which will not cause edge damage. The precision of the razor blade separation shall be thenominal width ± 0,1 mm.5.3.2 Tensile testing machineA constant rate of extension (CRE) tension tester shall be used. It is proposed to use an electronic machine takingat least one reading per mm of tape peeled. The tester shall have two clamps with centres in the same plane,parallel with the direction of the motion on the same plane, parallel with the direction of the motion on the stressingclamp and so aligned that they will hold the specimen wholly in the same plane; a means of moving the stressingclamp at a uniform rate of (5 ± 0,2) mm/s and a device for recording load. The instrument shall be calibrated suchthat a maximum error of 2 % is allowed on the reading.SIST EN 1939:2003



EN 1939:2003 (E)75.3.3 Stainless steel panelsThese shall be perfectly flat, at least 125 mm long and 50 mm wide and at least 1,1 mm thick, stainless steel type1.4301 in accordance with the 2 R quality defined in EN 10088-2, having a bright annealed finish with a surfaceroughness of 50 nm ± 25 nm. Panels showing stains, discoloration or many scratches are not acceptable. Newpanels shall be cleaned prior to use as described in 5.5.2.1 except with ten washes of the final solvent. Betweenuses the panel test surface shall be protected from scratches and contamination and the panels shall be stored inthe conditions described in 5.4.1.5.3.4 Roller mechanically or hand operated5.3.4.1A steel roller (85 ± 2,5) mm in diameter and (45 ± 1,5) mm in width, covered with rubber approximately6 mm in thickness, having a hardness of (80 ± 5) Shore A. The surface shall be a true cylinder, void of any convexor concave deviations. The mass of the roller shall be (2 ± 0,1) kg.5.3.4.2No part of the apparatus shall increase the mass of the roller during use. The roller shall move eithermechanically or by hand at the rate of (10 ± 0,5) mm/s.5.4 Test samples and test pieces5.4.1ConditioningCondition the sample rolls of tape in the standard conditions of (23 ± 1) °C and (50 ± 5) % relative humidity (RH).Test at these conditions unless otherwise specified (see 5.7.i). If these tolerances cannot be maintained, theclosest possible tolerances shall be used and these revised tolerances quoted in the report.5.4.2The test piece shall be 24 mm wide. A limit deviation of ± 0,5 mm shall be allowed. The length shall beapproximately 300 mm.NOTEWhere the width of the specimen is less than 24 mm, apply one or more additional strips of the tape to give anequivalent width of 24 mm for rolling purposes. Alternatively acceptable rolling pressure may be obtained with a 1 kg roller onsamples with width 8,5 mm to 17 mm or with 2 kg roller on samples with widths
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