SIST EN ISO 12625-7:2007
(Main)Tissue paper and tissue products - Part 7: Determination of optical properties (ISO 12625-7:2007)
Tissue paper and tissue products - Part 7: Determination of optical properties (ISO 12625-7:2007)
This part of ISO 12625 specifies test methods for the instrumental determination of optical properties of tissue paper and tissue products. The various test methods that are available have been, or are being, developed as International Standards. They are listed and explained in Annex A. This part of ISO 12625 also gives recommendations regarding relevant optical properties to be measured for different grades of tissue paper and tissue products and gives specific instructions for the preparation of test pieces (single-ply, multi-ply products) and for the optical measurements of creped products and embossed products, where special precautions may be necessary if the test-piece surfaces are uneven and if the materials are bulky, so that air is entrapped between the sheets.
Tissue-Papier und Tissue-Produkte - Teil 7: Bestimmung der optischen Eigenschaften (ISO 12625-7:2007)
Dieser Teil der ISO 12625 legt Prüfverfahren für die instrumentelle Bestimmung von optischen Eigenschaften für Tissue-Papier und Tissue-Produkte fest. Die verschiedenen zur Verfügung stehenden Prüfverfahren wurden oder werden als Internationale Normen erarbeitet. Sie sind in Anhang A aufgelistet und erläutert.
Dieser Teil der ISO 12625 gibt außerdem Empfehlungen, wie die entsprechenden optischen Eigenschaften für unterschiedliche Sorten von Tissue-Papier und Tissue-Produkten zu messen sind, und gibt spezielle Anweisungen für die Vorbereitung von Proben (einlagige-, mehrlagige Produkte) und für die optischen Messungen von gekreppten und geprägten Produkten, bei denen besondere Vorsichtsmaßnahmen notwendig sein können, falls die Oberfläche der Proben ungleichmäßig ist oder wenn die Materialien voluminös sind, so dass Luft zwischen den Blättern eingeschlossen ist.
Papier tissue et produits tissues - Partie 7: Détermination des propriétés optiques (ISO 12625-7:2007)
L'ISO 12625-7:2007 spécifie les méthodes d'essai pour la détermination instrumentale des propriétés optiques des papiers tissues et des produits tissues. Les diverses méthodes d'essai disponibles ont été ou vont être élaborées sous forme de Normes internationales.
L'ISO 12625-7:2007 donne également des recommandations quant aux propriétés optiques utiles à mesurer pour différentes qualités de papiers tissues et de produits tissues et fournit des instructions spécifiques pour la préparation des éprouvettes (produits à pli unique, produits multiplis) ainsi que pour les mesures optiques des produits crêpés et des produits gaufrés, lorsque des précautions particulières peuvent se révéler nécessaires si les surfaces des éprouvettes sont irrégulières et si les matériaux sont si volumineux que de l'air peut être emprisonné entre les feuilles.
Tissue papir in izdeki iz tissue papirja - 7. del: Določevanje optičnih lastnosti (ISO 12625-7:2007)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 12625-7:2007
01-julij-2007
1DGRPHãþD
SIST EN 12625-7:2000
7LVVXHSDSLULQL]GHNLL]WLVVXHSDSLUMDGHO 'RORþHYDQMHRSWLþQLKODVWQRVWL ,62
Tissue paper and tissue products - Part 7: Determination of optical properties (ISO
12625-7:2007)
Tissue-Papier und Tissue-Produkte - Teil 7: Bestimmung der optischen Eigenschaften
(ISO 12625-7:2007)
Papier tissue et produits tissues - Partie 7: Détermination des propriétés optiques (ISO
12625-7:2007)
Ta slovenski standard je istoveten z: EN ISO 12625-7:2007
ICS:
85.080.20 Tissue papir Tissue paper
SIST EN ISO 12625-7:2007 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN ISO 12625-7
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2007
ICS 85.060 Supersedes EN 12625-7:2000
English Version
Tissue paper and tissue products - Part 7: Determination of
optical properties (ISO 12625-7:2007)
Papier tissue et produits tissues - Partie 7: Détermination Tissue-Papier und Tissue-Produkte - Teil 7: Bestimmung
des propriétés optiques (ISO 12625-7:2007) der optischen Eigenschaften (ISO 12625-7:2007)
This European Standard was approved by CEN on 17 February 2007.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status 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 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 translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12625-7:2007: E
worldwide for CEN national Members.
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EN ISO 12625-7:2007 (E)
Foreword
This document (EN ISO 12625-7:2007) 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, either by publication of
an identical text or by endorsement, at the latest by September 2007, and conflicting national
standards shall be withdrawn at the latest by September 2007.
This document supersedes EN 12625-7:2000.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United
Kingdom.
2
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INTERNATIONAL ISO
STANDARD 12625-7
First edition
2007-03-01
Tissue paper and tissue products —
Part 7:
Determination of optical properties
Papier tissue et produits tissues —
Partie 7: Détermination des propriétés optiques
Reference number
ISO 12625-7:2007(E)
©
ISO 2007
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ISO 12625-7:2007(E)
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ii © ISO 2007 – All rights reserved
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ISO 12625-7:2007(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 Apparatus . 3
5 Sampling and conditioning. 3
6 Preparation of test pieces. 4
7 Procedure . 4
8 Calculation. 6
9 Test report . 7
10 Precision. 8
Annex A (informative) Test methods available for the determination of optical properties . 9
Bibliography . 10
© ISO 2007 – All rights reserved iii
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ISO 12625-7:2007(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 12625-7 was prepared by the European Committee for Standardization (CEN), Technical Committee
CEN/TC 172, Pulp, paper and board, in collaboration with Technical Committee ISO/TC 6, Paper, board and
pulps, Subcommittee SC 2, Test methods and quality specifications for paper and board, in accordance with
the Agreement on technical co-operation between ISO and CEN (Vienna Agreement).
ISO 12625 consists of the following parts, under the general title Tissue paper and tissue products:
⎯ Part 1: General guidance on terms
⎯ Part 3: Determination of thickness, bulking thickness and apparent bulk density
⎯ Part 4: Determination of tensile strength, stretch at break and tensile energy absorption
⎯ Part 5: Determination of wet tensile strength
⎯ Part 6: Determination of grammage
⎯ Part 7: Determination of optical properties
⎯ Part 8: Water-absorption time and water-absorption capacity, basket-immersion test method
⎯ Part 9: Determination of ball burst strength
iv © ISO 2007 – All rights reserved
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ISO 12625-7:2007(E)
Introduction
Optical measurements 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.
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. It is recommended that
agreement with respect to the properties to be measured is reached by the parties concerned, from case to
case. If it is desired to achieve a match with products based on other materials, for example, between table
napkins and candles, visual comparison may be essential.
© ISO 2007 – All rights reserved v
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INTERNATIONAL STANDARD ISO 12625-7:2007(E)
Tissue paper and tissue products —
Part 7:
Determination of optical properties
1 Scope
This part of ISO 12625 specifies test methods for the instrumental determination of optical properties of tissue
paper and tissue products. The various test methods that are available have been, or are being, developed as
International Standards. They are listed and explained in Annex A.
This part of ISO 12625 also gives recommendations regarding relevant optical properties to be measured for
different grades of tissue paper and tissue products and gives specific instructions for the preparation of test
pieces (single-ply, multi-ply products) and for the optical measurements of creped products and embossed
products, where special precautions may be necessary if the test-piece surfaces are uneven and if the
materials are bulky, so that air is entrapped between the sheets.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 186, Paper and board — Sampling to determine average quality
ISO 187, Paper, board and pulps — Standard atmosphere for conditioning and testing and procedure for
monitoring the atmosphere and conditioning of samples
ISO 2469, Paper, board and pulps — Measurement of diffuse reflectance factor
ISO 2470:1999, Paper and board — Measurement of diffuse blue reflectance factor (ISO brightness)
ISO 2471, Paper and board — Determination of opacity (paper backing) — Diffuse reflectance method
ISO 5631, Paper and board — Determination of colour (C/2°) — Diffuse reflectance method
ISO 11475, Paper and board — Determination of CIE whiteness, D65/10° (outdoor daylight)
ISO 11476, Paper and board — Determination of CIE whiteness, C/2° (indoor illumination conditions)
© ISO 2007 – All rights reserved 1
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ISO 12625-7:2007(E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
reflectance factor
R
ratio of the radiation reflected by a body to that reflected by the perfect reflecting diffuser under the same
conditions of illumination and detection
NOTE 1 The reflectance factor is expressed as a percentage.
NOTE 2 The reflectance factor is influenced by the backing if the body is translucent.
3.2
diffuse reflectance factor
R
ratio of the reflection from a body to that reflected by the perfect reflecting diffuser under the same conditions
of diffuse illumination and normal detection
NOTE The ratio is often expressed as a percentage.
3.3
intrinsic reflectance factor
R
∞
reflectance factor of a layer or pad of material thick enough to be opaque, i.e. such that increasing the
thickness of the pad by doubling the number of sheets leads to no change in the measured reflectance factor
NOTE Adapted from ISO 2469:1994.
3.4
luminous reflectance factor
R
y
[1]
reflectance factor defined with reference to the CIE illuminant C, described in CIE Publication 15.2 and the
[2]
CIE 1931 colour-matching function y (l) (described in ISO/CIE 10527 ), and corresponding to the attribute
of visual perception of the reflecting surface
NOTE Adapted from ISO 2471:1998.
3.5
single-sheet luminous reflectance factor
R
0
luminous reflectance factor of a single sheet of paper with a black cavity as backing
[ISO 2471:1998]
3.6
diffuse blue reflectance factor
ISO brightness
R
457
intrinsic reflectance factor measured with a reflectometer having the characteristics described in ISO 2469,
Annex A, equipped with a filter or corresponding function having an effective wavelength of 457 nm and a
width of 44 nm, described more fully by the weighting function factors given in Annex A and Table A.1 (in
ISO 2470:1999), and adjusted so that the UV-content of the illumination incident upon the test piece
corresponds to that of the CIE illuminant C
NOTE Adapted from ISO 2470:1999.
2 © ISO 2007 – All rights reserved
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ISO 12625-7:2007(E)
3.7
D65 brightness
intrinsic reflectance factor measured at an effective wavelength of 457 nm under the conditions specified in
ISO 2470 when the UV-content of the illumination has been adjusted as specified in ISO 11475 to conform to
the D65 illuminant (referred to in ISO 2470)
3.8
CIE-whiteness (C/2°)
W
measure of whiteness derived from the CIE tristimulus values corresponding to the CIE standard illuminant C,
[1]
described in CIE Publication 15.2 , and the CIE 1931 standard colorimetric observer, described in
[2]
ISO/CIE 10527 , determined under the conditions specified in ISO 11476
3.9
CIE whiteness (D65/10°)
W
10
measure of whiteness derived from the CIE tristimulus values corresponding to the CIE standard illuminant
[3]
D65, described in ISO 10526 and the CIE 1964 supplementary standard colorimetric observer, described in
[2]
ISO/CIE 10527 , determined under the conditions specified in ISO 11475 and expressed as whiteness units
3.10
colour (C/2°)
L*, a* and b* values of the sample according to the CIELAB 1976 system, corresponding to the CIE illuminant
[1]
C, described in CIE Publication 15.2 and the CIE 1931 standard colorimetric observer, described in
[2]
ISO/CIE 10527 , determined by measurement under the conditions specified in ISO 5631
3.11
colour (D65/10°)
L*, a* and b* values of the sample according to the CIELAB 1976 system, corresponding to the CIE standard
[3]
illuminant D65, described in ISO 10526 and the CIE 1964 supplementary standard colorimetric observer,
[2]
described in ISO/CIE 10527 , determined by measurement under the conditions analogous to those
specified in ISO 5631
3.12
opacity (paper backing)
ratio, expressed as a percentage, of the single-sheet luminous reflectance factor, R , to the intrinsic luminous
0
reflectance factor, R , of the same sample
∞
[ISO 2471:1998]
4 Apparatus
4.1 Reflectometer, either a filter colorimeter or an abridged spectrophotometer, as specified in and
calibrated according to ISO 2469.
Use the apparatus as specified in the relevant International Standard.
5 Sampling and conditioning
Unless otherwise agreed between the parties concerned, take samples in accordance with ISO 186 and
condition them in accordance with ISO 187. Mark the samples for identification, and make sure that the two
sides of the paper or of the product can be distinguished.
If testing is to be carried out on a sample as received, ensure that the test pieces taken are representative of
this sample.
© ISO 2007 – All rights reserved 3
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