1、August 2014Translation by DIN-Sprachendienst.English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、85.080.20!%7d“2206597www.din.deDDIN EN ISO 12625-7Tissue paper and tissue products Part 7: Determination of optical properties Measurement of brightness and colour with D65/10 (outdoor daylight)(ISO 12625-7:2014);English version EN ISO 12625-7:2014,English translation of DIN EN ISO 12625-7:2014-08Ti
3、ssue-Papier und Tissue-Produkte Teil 7: Bestimmung der optischen Eigenschaften Brightness- und Farbmessung mit Lichtart D65/10 (Auentageslicht) (ISO 12625-7:2014);Englische Fassung EN ISO 12625-7:2014,Englische bersetzung von DIN EN ISO 12625-7:2014-08Papier tissue et produits tissue Partie 7: Dterm
4、ination des proprits optiques Mesurage du degr de blancheur et de la couleur avec lilluminant D65/10 (lumire dujour extrieure) (ISO 12625-7:2014);Version anglaise EN ISO 12625-7:2014,Traduction anglaise de DIN EN ISO 12625-7:2014-08SupersedesDIN EN ISO 12625-7:2007-06www.beuth.deIn case of doubt, th
5、e German-language original shall be considered authoritative.Document comprises 17 pages07.14 DIN EN ISO 12625-7:2014-08 2 A comma is used as the decimal marker. National foreword This document (EN ISO 12625-7:2014) has been prepared by Technical Committee CEN/TC 172 “Pulp, paper and board”, (Secret
6、ariat: DIN, Germany), Working Committee WG 8 “Test methods for soft tissue papers” (Secretariat: DIN, Germany) in collaboration with Technical Committee ISO/TC 6 “Paper, board and pulps”. The responsible German body involved in its preparation was the Normenausschuss Papier, Pappe und Faserstoff (Pa
7、per, Board and Pulps Standards Committee), Working Committee NA 074-02-05 AA Prf-verfahren fr Tissue-Papier und Tissue-Produkte. There have been many attempts to translate the terms “brightness” and “whiteness” into German. However, in this document these terms have not been translated to avoid any
8、possible additional meanings for these terms (and thus possible misinterpretations). The DIN Standards corresponding to the International Standards referred to in Clause 2 of this standard are as follows: ISO 186 DIN EN ISO 186 ISO 187 DIN EN 20187 Amendments This standard differs from DIN EN ISO 12
9、625-7:2007-06 as follows: a) measurement of optical properties under D65/10 conditions has been included; b) light conditions for the determination of brightness and colour of tissue paper and tissue products have been specified; c) whiteness and opacity measurements have been excluded; d) the stand
10、ard has been editorially revised. Previous editions DIN EN 12625-7: 2000-10 DIN EN ISO 12625-7: 2007-06 National Annex NA (informative) Bibliography DIN EN ISO 186, Paper and board Sampling to determine average quality DIN EN 20187, Paper, board and pulps Standard atmosphere for conditioning and tes
11、ting and procedure for monitoring the atmosphere and conditioning of samples EN ISO 12625-7May 2014 ICS 85.060 Supersedes EN ISO 12625-7:2007English Version Tissue paper and tissue products - Part 7: Determination of optical properties - Measurement of brightness and colour with D65/10 (outdoor dayl
12、ight) (ISO 12625-7:2014) Papier tissue et produits tissue - Partie 7: Dtermination des proprits optiques - Mesurage du degr de blancheur et de la couleur avec lilluminant D65/10 (lumire du jour extrieure) (ISO 12625-7:2014) Tissue-Papier und Tissue-Produkte - Teil 7: Bestimmung der optischen Eigensc
13、haften - Brightness- und Farbmessung mit Lichtart D65/10 (Auentageslicht) (ISO 12625-7:2014)This European Standard was approved by CEN on 17 April 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the stat
14、us of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, Ge
15、rman). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croat
16、ia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUni
17、ted Kingdom. CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 12625-7:2014 EEUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KO
18、MITEE FR NORMUNGEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORM2DIN EN ISO 12625-7:2014-08 EN ISO 12625-7:2013 (E) Contents Page Foreword . 3 Introduction . 4 1 Scope . 5 2 Normative references. 5 3 Terms and definitions 5 4 Principle 7 5 Apparatus 7 6 Calibration . 8 7 Sampling . 8 8 Conditioning .
19、 9 9 Preparation of test pieces . 9 10 Procedure 9 10.1 General 9 10.2 Measurement of D65 brightness . 9 10.3 Measurement of colour (D65/10) . 9 11 Calculation 10 11.1 D65 brightness . 10 11.2 Colour (D65/10) . 10 12 Test report . 11 Annex A (informative) Precision . 12 Bibliography 15 ForewordThis
20、document (EN ISO 12625-7:2014) has been prepared by Technical Committee CEN/TC 172 “Pulp, paper and board” the secretariat of which is held by DIN, in collaboration with Technical Committee ISO/TC 6 “Paper, board and pulps”. This European Standard shall be given the status of a national standard, ei
21、ther by publication of an identical text or by endorsement, at the latest by November 2014, and conflicting national standards shall be withdrawn at the latest by November 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN
22、and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 12625-7:2007. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard:
23、Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, S
24、weden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 12625-7:2014 has been approved by CEN as EN ISO 12625-7:2014 without any modification. 3DIN EN ISO 12625-7:2014-08EN ISO 12625-7:2013 (E)IntroductionBrightness and colour measurement may be performed under various
25、illumination and observation conditions. This part of ISO 12625 deals with D65/10 conditions, which refer to an outdoor daylight.C/2 conditions (indoor daylight) are considered in ISO 12625-15. Although both international standards deal with brightness and colour, results obtained are usually differ
26、ent and do not correlate.Optical measurement are affected by the geometry of the instruments used and by the texture of the material. The design of the instrument to be used according to this part of ISO 12625, and the routine to be adopted for its calibration, are specified in ISO 2469 and ISO 1147
27、5.The optical properties are related to the visual appearance of the material. Therefore, although optical properties are intrinsic properties of tissue paper, they are not functional properties.Brightness shall not be confused with the optical property called CIE-whiteness that is based on reflecta
28、nce data obtained over the full visible spectral range (VIS) in contrast to the measurement of brightness which is limited to the blue region of VIS.Due to the importance for some countries three different test methods for the determination of optical properties were developed: Part 7: Determination
29、 of optical properties Measurement of brightness and colour with D65/10 (outdoor daylight); Part 15: Determination of optical properties Measurement of brightness and colour with C/2 (indoor) daylight; Part 16: Determination of optical properties Opacity (paper backing) Diffuse reflectance method ;4
30、DIN EN ISO 12625-7:2014-08 EN ISO 12625-7:2013 (E) 1 ScopeThis part of ISO 12625 specifies testing procedures for the instrumental determination of brightness and colour of tissue paper and tissue products viewed under outdoor daylight conditions. It also gives specific instructions for the preparat
31、ion of test pieces (single-ply, multi-ply products) and for the optical measurements of products, where special precautions may be necessary.NOTE The properties called C/2 brightness and colour are measured with an instrument adjusted to a much lower UV content than that specified in this part of IS
32、O 12625. The measurements of C/2 brightness and colour are described in ISO 12625-15.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For un
33、dated references, the latest edition of the referenced document (including any amendments) applies.ISO 186, Paper and board Sampling to determine average qualityISO 187, Paper, board and pulps Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioni
34、ng of samplesISO 2469:2007, Paper, board and pulps Measurement of diffuse radiance factorISO 5631-2:2008, Paper and board Determination of colour by diffuse reflectance Part 2: Outdoor daylight conditions (D65/10 degrees)ISO 11475, Paper and board Determination of CIE whiteness, D65/10 degrees (outd
35、oor daylight)3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1reflectance factorRratio of the radiation reflected by a body to that reflected by the perfect diffuser under the same conditions of illumination and detectionNote 1 to entry: The refl
36、ectance factor is expressed as a percentage.Note 2 to entry: The reflectance factor is influenced by the backing if the body is translucent.5DIN EN ISO 12625-7:2014-08EN ISO 12625-7:2013 (E)3.2diffuse (radiance) reflectance factorRratio of the reflection from a body to that from the perfect reflecti
37、ng diffuser under the same conditions of diffuse illumination and normal detectionNote 1 to entry: The ratio is often expressed as a percentage.Note 2 to entry: Adapted from ISO 2469:2007, definition 3.5.3.3intrinsic reflectance factorRdiffuse reflectance factor of a layer or pad of material thick e
38、nough to be opaque, i.e. such that increasing the thickness of the pad by doubling the number of sheets results in no change in the measured reflectance factorSOURCE: ISO 2469:2007, definition 3.63.4D65 brightnessintrinsic reflectance factor measured with a reflectometer having the characteristics d
39、escribed in ISO 2469, equipped with a filter or corresponding function having an effective wavelength of 457 nm (and a half bandwidth of 44 nm), and adjusted so that the UV content of the irradiation incident upon the test piece corresponds to that of the CIE standard illuminant D65Note 1 to entry:
40、The filter function is described more fully by the weighing function factors given in ISO 2470-27.3.5tristimulus valuesX10,Y10,Z10amounts of the three reference colour stimuli, in a given chromatic system, required to match the stimulus consideredNote 1 to entry: In ISO 5631-2 the CIE standard illum
41、inant D65 and the CIE 1964 (10) standard observer are used to define the trichromatic system.Note 2 to entry: The subscript 10 is applied to conform to the CIE convention that tristimulus units have the subscript 10 when the CIE 1964 (10) standard observer is used.SOURCE: ISO 5631-2:2008, definition
42、 3.53.6colour (D65/10)L*, a* and b* values of the sample according to the CIELAB 1976 system, corresponding to the CIE standard illuminant D65, described in ISO 11664-2 and the CIE 1964 supplementary standard colorimetric observer, described in ISO 11664-1,2determined by measurement under the condit
43、ions specified in ISO 5631-2Note 1 to entry: The quantity L* is a measure of the lightness of the test piece, where L* = 0 corresponds to black and L* = 100 is defined by the perfect reflecting diffuser. Visually, the quantities a* and b* represent respectively the red-green and yellow-blue axes in
44、colour space, such that +a* is a measure of the degree of redness of the test piece; -a* is a measure of the degree of greenness of the test piece; +b* is a measure of the degree of yellowness of the test piece; -b* is a measure of the degree of blueness of the test piece; if both a* and b* are equa
45、l to zero, the test piece is grey.6DIN EN ISO 12625-7:2014-08 EN ISO 12625-7:2013 (E) 4 PrincipleA test piece is illuminated diffusely in a standardized instrument and the light reflected normal to the surface is either allowed to pass through a defined optical filter and then measured by a photodet
46、ector or measured by an array of photosensitive diodes, where each diode responds to a different effective wavelength. The brightness is then determined directly from the output from the photodetector or by calculation from the photosensitive diode outputs using the appropriate weighting function an
47、d colour coordinates are calculated for D65/10 conditions.5 Apparatus5.1 Reflectometer or spectrophotometer, having the geometric, spectral and photometric characteristics described in ISO 2469 and calibrated in accordance with the provisions of ISO 2469, and equipped for the measurement of blue ref
48、lectance factor5.1.1 In the case of a filter reflectometer, the radiation falling upon the test piece shall have a UV content corresponding to that of the CIE standard illuminant D65, adjusted or verified by the help of the fluorescent reference standard (5.2.2).5.1.2 In the case of an abridged spec
49、trophotometer, the instrument shall have an adjustable filter with a cut-off wavelength of 395 nm or some other system for adjustment and control, and this filter shall be adjusted or the system shall be calibrated with the help of the fluorescence reference standard (5.2.2), so that the UV content of the illumination falling upon the sample corresponds to that of the CIE standard illuminant D65.5.2 Reference standard
