SIST EN ISO 6504-3:2007
(Main)Paints and varnishes - Determination of hiding power - Part 3: Determination of contrast ratio of light-coloured paints at a fixed spreading rate (ISO 6504-3:2006)
Paints and varnishes - Determination of hiding power - Part 3: Determination of contrast ratio of light-coloured paints at a fixed spreading rate (ISO 6504-3:2006)
This part of ISO 6504 describes methods for determining the opacity (by contrast ratio measurement) given by paint films of white or light colours of tristimulus value Y greater than 25, applied at a spreading rate of 20 m2/I to a black and white chart or to colourless transparent polyester foil. In the latter case, the tristimulus value Y is measured subsequently over black and white glass panels.
Beschichtungsstoffe - Bestimmung des Deckvermögens - Teil 3: Bestimmung des Kontrastverhältnisses von hellen Beschichtungen bei einer festgelegten Ergiebigkeit (ISO 6504-3:2006)
Dieser Teil von ISO 6504 beschreibt Verfahren zum Bestimmen des Deckvermögens (durch Messen des Kontrastverhältnisses) weißer oder heller Beschichtungsstoffe mit einem Y-Farbwert von mehr als 25, die mit einer Ergiebigkeit von 20 m2/l auf festgelegte schwarzweiße Kontrollkarten oder farblose, transparente Polyesterfolie aufgetragen werden, wobei im letzteren Fall der Y-Farbwert anschließend über festgelegten schwarzweißen Glasplatten gemessen wird.
Peintures et vernis - Détermination du pouvoir masquant - Partie 3: Détermination du rapport de contraste des peintures claires a un rendement surfacique déterminé (ISO 6504-3:2006)
L'ISO 6504-3:2006 décrit des méthodes permettant de déterminer le pouvoir masquant (par mesurage du rapport de contraste) de feuils de peinture blanche ou de peinture claire dont la valeur du tristimulus Y est supérieure à 25, appliqués selon un rendement surfacique de 20 m2/l sur une carte à contraste de noir et de blanc ou sur une feuille de polyester transparent incolore. Dans ce dernier cas, la valeur du tristimulus Y est ensuite mesurée sur des plaques de verre à contraste de noir et de blanc.
Barve in laki – Ugotavljanje kritnosti – 3. del: Ugotavljanje kontrastnega razmerja med pastelnimi niansami pri nespremenljivi razlivnosti (ISO 6504-3:2006)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 6504-3:2007
01-julij-2007
Barve in laki – Ugotavljanje kritnosti – 3. del: Ugotavljanje kontrastnega razmerja
med pastelnimi niansami pri nespremenljivi razlivnosti (ISO 6504-3:2006)
Paints and varnishes - Determination of hiding power - Part 3: Determination of contrast
ratio of light-coloured paints at a fixed spreading rate (ISO 6504-3:2006)
Beschichtungsstoffe - Bestimmung des Deckvermögens - Teil 3: Bestimmung des
Kontrastverhältnisses von hellen Beschichtungen bei einer festgelegten Ergiebigkeit
(ISO 6504-3:2006)
Peintures et vernis - Détermination du pouvoir masquant - Partie 3: Détermination du
rapport de contraste des peintures claires a un rendement surfacique déterminé (ISO
6504-3:2006)
Ta slovenski standard je istoveten z: EN ISO 6504-3:2007
ICS:
87.040 Barve in laki Paints and varnishes
SIST EN ISO 6504-3:2007 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 6504-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2007
ICS 87.040
English Version
Paints and varnishes - Determination of hiding power - Part 3:
Determination of contrast ratio of light-coloured paints at a fixed
spreading rate (ISO 6504-3:2006)
Peintures et vernis - Détermination du pouvoir masquant - Beschichtungsstoffe - Bestimmung des Deckvermögens -
Partie 3: Détermination du rapport de contraste des Teil 3: Bestimmung des Kontrastverhältnisses von hellen
peintures claires à un rendement surfacique déterminé Beschichtungen bei einer festgelegten Ergiebigkeit (ISO
(ISO 6504-3:2006) 6504-3:2006)
This European Standard was approved by CEN on 21 January 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 6504-3:2007: E
worldwide for CEN national Members.
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EN ISO 6504-3:2007 (E)
Foreword
The text of ISO 6504-3:2006 has been prepared by Technical Committee ISO/TC 35 "Paints and
varnishes” of the International Organization for Standardization (ISO) and has been taken over
as EN ISO 6504-3:2007 by Technical Committee CEN/TC 139 "Paints and varnishes", 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 or by endorsement, at the latest by August 2007, and conflicting national
standards shall be withdrawn at the latest by August 2007.
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.
Endorsement notice
The text of ISO 6504-3:2006 has been approved by CEN as EN ISO 6504-3:2007 without any
modifications.
2
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INTERNATIONAL ISO
STANDARD 6504-3
Second edition
2006-02-15
Paints and varnishes — Determination of
hiding power —
Part 3:
Determination of contrast ratio of light-
coloured paints at a fixed spreading rate
Peintures et vernis — Détermination du pouvoir masquant —
Partie 3: Détermination du rapport de contraste des peintures claires à
un rendement surfacique déterminé
Reference number
ISO 6504-3:2006(E)
©
ISO 2006
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ISO 6504-3:2006(E)
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©
ii ISO 2006 – All rights reserved
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ISO 6504-3:2006(E)
Contents Page
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
6 Sampling . 3
7 Procedure . 3
8 Precision . 6
9 Test report . 7
©
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ISO 6504-3:2006(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 6504-3 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 9,
General test methods for paints and varnishes.
This second edition cancels and replaces the first edition (ISO 6504-3:1998), which has been technically
revised.
The main technical changes are:
a) the unit of density of the wet coating material, used in Equation (3) in 7.6.2, has been corrected;
��
b) the surface density (ρ ) has been changed to mass per unit area of the dry coating (m ).
A
The opportunity has also been taken to revise the text editorially.
ISO 6504 consists of the following parts, under the general title Paints and varnishes — Determination of hiding
power:
— Part 1: Kubelka-Munk method for white and light-coloured paints
— Part 3: Determination of contrast ratio of light-coloured paints at a fixed spreading rate
The subject originally intended to be covered by Part2 is currently covered by ISO2814, Paints and
varnishes — Comparison of contrast ratio (hiding power) of paints of the same type and colour.
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iv ISO 2006 – All rights reserved
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ISO 6504-3:2006(E)
Introduction
Two techniques are available for test film preparation and measurement when determining the contrast ratio of
paints:
a) application to colourless, transparent polyester foil, the coated foil being subsequently placed in turn over
black and white glass panels;
b) direct application to black and white charts, for example Morest charts.
Because different operators using the same draw-down device will obtain paint films differing significantly in
thickness, an absolute method for the determination of opacity is required. Collaborative trials between groups
of experts from a number of countries have shown that reproducible results can be obtained by determination of
the contrast ratio corresponding to a precisely fixed spreading rate by interpolation between measurements at
2
two or more measured film thicknesses. The spreading rate selected in this part of ISO 6504 is 20 m /l (wet film
thickness 50µm), which is considered to be an average for brush application of a free-flowing paint on a
smooth, non-porous surface. However, for particular types of paint normally used at other film thickness ranges,
for example industrial enamels and printing inks, the interested parties may agree on another spreading rate.
Further collaborative trials have indicated that higher reproducibility is obtained with films spread on polyester
foil than with films spread on a black and white chart, although the latter technique is simpler to operate. This
part of ISO 6504 provides for both these options.
The methods are based on the observation that contrast ratio is an approximately linear function of reciprocal
spreading rate, over a restricted film thickness range which also corresponds to that used for normal application
of white or light-coloured paints. It is thus possible to interpolate graphically or by computation, with satisfactory
accuracy, between results obtained with films of different thicknesses.
Because the wet film thickness is not always determined directly, the methods specified in this part of ISO 6504
involve the determination of dry film mass per unit area and calculation of the corresponding wet film thickness.
In this latter calculation, values for wet paint density and percentage of non-volatile-matter content are required.
Determination of these values by the methods specified in the relevant International Standards has been
stipulated. However, it is recognized that, for certain types of paint, the non-volatile-matter determination in
accordance with ISO 3251 does not correspond exactly to the mass changes in a film during drying under the
conditions of the present test method. Any errors introduced into results by this discrepancy should be common
to all laboratories, however, and should not affect comparisons of paints of similar types.
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.
vi
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INTERNATIONAL STANDARD ISO 6504-3:2006(E)
Paints and varnishes — Determination of hiding power —
Part 3:
Determination of contrast ratio of light-coloured paints at a fixed
spreading rate
1Scope
This part of ISO 6504 describes methods for determining the opacity (by contrast ratio measurement) given by
2
paint films of white or light colours of tristimulus value Y greater than 25, applied at a spreading rate of 20 m /l
to a black and white chart or to colourless transparent polyester foil. In the latter case, the tristimulus value Y is
measured subsequently over black and white glass panels.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition ci
...
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