Standard

NS-EN ISO 11833-2:2006

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1.1This part of ISO 11833 specifies requirements for sheets and films of unplasticized poly(vinyl chloride) (PVC-U) and the test methods to be used to measure the required values. 1.2It applies only to sheets of thickness less than 1,0 mm. 1.3It does not cover thermoshrinkable or biaxially stretched PVC-U sheets and films. 2Normative referencesThe following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 11833. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 11833 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.ISO 75-2:1993, Plastics — Determination of temperature of deflection under load — Part 2: Plastics and ebonite.ISO 291:1997, Plastics — Standard atmospheres for conditioning and testing.ISO 306:1994, Plastics — Thermoplastic materials — Determination of Vicat softening temperature (VST).ISO 527-3:1995, Plastics — Determination of tensile properties — Part 3: Test conditions for films and sheets.ISO 1163-1:1995, Plastics — Unplasticized poly(vinyl chloride) (PVC-U) moulding and extrusion materials — Part 1: Designation system and basis for specifications.ISO 2818:1994, Plastics — Preparation of test specimens by machining.ISO 2859-1 :—1), Sampling procedures for inspection by attributes — Part 1: Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection.ISO 8256:1990, Plastics — Determination of tensile-impact strength.ISO 11501:1995, Plastics — Film and sheeting — Determination of dimensional change on heating.3MaterialSheets shall be fabricated from unplasticized PVC compounds as defined in ISO 1163-1:1995, subclause 1.3. Compounds may contain additives such as stabilizers, lubricants, processing aids, impact modifiers, flame retardants and colourants. Compounds and additives of unknown identity and composition shall not be used for the processing of sheets.NOTE —Legal considerations may cause a specific choice of compound.4ClassificationSheets are classified into four groups (three of which are subdivided into two classes) by the numerical values of the two most important properties, i.e. the tensile impact strength and the Vicat softening temperature (see table 3).5Requirements5.1AppearanceThe surface shall be free of noticeable flaws, cracks, mottling, voids, bubbles, impurities and other defects which are not acceptable for the application envisaged. The sheet shall have a smooth surface, except for embossed sheets which shall have a uniform pattern. Any further requirements concerning appearance shall be agreed between the interested parties.5.2ColourColourants shall be distributed uniformly throughout the material. Admissible differences in colour within a sheet and amongst sheets shall be agreed between the interested parties as required.5.3Dimensions5.3.1Length, width and rectangularityThe length and width of sheets shall be agreed between the interested parties. The tolerances on the dimensions and the rectangularity shall be as specified in table 1.Table 1Tolerances on length, width and rectangularityDimension/rectangularityToleranceLengthFlat sheet+200Rolled sheetMinus not acceptedWidth+50RectangularityFlat sheetΔ/ ≤ 4 mm per 1 000 mm of side Dimensions in millimetres5.3.2ThicknessThe tolerance on the thickness shall be as specified in table 2.Table 2Tolerances on thicknessNominal thickness, dTolerancemm%d ≤ 0,03± 400,03 < d ≤ 0,05± 300,05 < d ≤ 0,1± 200,1 < d ≤ 0,3± 150,3 < d ≤ 0,5± 130,5 < d < 1,0± 105.4PropertiesThe properties of sheets of each group and class shall be as specified in table 3.Table 3Properties of sheetsPropertyTest methodUnitRequirementsSee subclauseGroup 1Group 2Group 3Group 4Class 1Class 2Class 1Class 2Class 1Class 2Tensile stress at yieldISO 527-3 Type 1B 50 mm/minMPa≥ 40≥ 40≥ 40≥ 40≥ 40≥ 40≥ 406.4.1Nominal strain at breakISO 527-3 Type 1B 50 mm/min%≥ 20≥ 20≥ 20≥ 20≥ 20≥ 20≥ 206.4.1Tensile impact strengthISO 8256Method AType 3kJ/m2——≥ 300≥ 300≥ 400≥ 400—6.4.2Vicat softening temperatureISO 306Method B°C≥ 60≥ 70≥ 60≥ 70≥ 60≥ 70≥ 906.5The requirements for the optional properties given in table 4 shall be agreed between the interested parties as required.Table 4Optional propertiesPropertyTest methodUnitTemperature of deflection under loadISO 75-2Method A°CDimensional change on heatingISO 11501%5.5Chemical and physiological properties5.5.1FlammabilityRequirements for flammability shall be agreed between the interested parties as required. Relevant national and international standards shall be considered in the agreement.5.5.2Chemical resistanceRequirements for chemical resistance for specific applications shall be agreed between the interested parties as required.5.5.3Physiological behaviourRequirements for physiological behaviour shall be agreed between the interested parties as required. The relevant legislation shall be taken into consideration if the sheet will come into contact with food.6Test methods6.1General6.1.1SamplingTake a sample sufficient to determine the compliance of the material with this specification. The sampling procedure given in ISO 2859-1 is recommended.6.1.2Preparation of specimensPrepare all specimens in accordance with ISO 2818. Prepare the specimens for tensile strength, tensile impact strength and dimensional change on heating by stamping or cutting. The surface of the specimens shall be free of any damage or faults in order to avoid notch effects. Should any burrs be present on a specimen, remove them without damaging the surface.6.1.3Conditioning and testing of specimensUnless otherwise specified in the applicable test method, carry out testing in one of the standard atmospheres specified in ISO 291, after conditioning the specimens for at least 16 h in the same atmosphere.6.2Appearance examinationExamine the surfaces and cut edges with the naked eye from a distance of 60 cm for noticeable flaws, cracks, mottling, voids, bubbles, impurities and other defects, inspecting the sheet in the direction opposite to that of the incident light.6.3Dimensions6.3.1Measure the length, width and diagonals of the sheet to the nearest 1 mm, using a calibrated ruler.6.3.2Measure the thickness to the nearest 0,01 mm, using a calibrated thickness gauge.6.3.3RectangularityDetermine the rectangularity Δ/ as shown in figure 1.Figure 1RectangularityDimensions in millimetres6.4Mechanical properties6.4.1Tensile stress at yield and nominal strain at breakDetermine the tensile stress at yield and the nominal strain at break in accordance with ISO 527-3, using at least five type 1B specimens for each direction and a test speed of 50 mm/min.6.4.2Tensile impact strengthDetermine the tensile impact strength in accordance with ISO 8256.6.5Vicat softening temperatureDetermine the Vicat softening temperature in accordance with ISO 306, Method B.7MarkingThe following information shall be marked on each package of sheets:a)the number of this part of ISO 11833, the material and the product designation as shown below: b)the dimensions;c)the manufacturer's name and country, and the year and month of manufacture or lot number.

Dokumentinformasjon

  • Standard fra SN
  • Publisert:
  • Utgave: 2006-04
  • Versjon: 1
  • Varetype: NAT
  • ICS 83.140.10
  • National Committee SN/K 609

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