Paper and board intended to come into contact with foodstuffs - Determination of colour fastness of dyed paper and board

This document describes procedures for the testing of dyed paper and board intended to come into contact with foodstuffs. Some procedures depending on the foreseeable use of the material are given.
Visual evaluation against a grey scale provides grading of the bleeding.
For samples having significant different sides, a migration can occur from one glass fibre to the other and could lead to wrong interpretation of the fastness of one side. It is advisable to check these samples using large sampling procedure to prevent cross contamination of the glass fibre during the migration procedure. The procedure is described in Annex A. If lower limit of detection is required, this procedure could also be used.

Papier und Pappe vorgesehen für den Kontakt mit Lebensmitteln - Bestimmung der Farbechtheit von gefärbtem Papier und Pappe

Dieses Dokument legt ein Verfahren zur Prüfung von gefärbtem Papier und Pappe, die für den Kontakt mit Lebensmitteln bestimmt sind, fest. Es werden verschiedene Varianten angegeben, je nach vorher¬sehbarer Nutzung des vorhandenen Werkstoffs.
Die visuelle Bewertung gegen einen Graumaßstab gibt Abstufungen beim Ausbluten vor.
Bei Proben mit wesentlich unterschiedlichen Seiten kann es zu einer Migration von einer Glasfaser zur anderen kommen, was wiederum zur falschen Interpretation der Farbechtheit auf einer Seite führen könnte. Es ist empfehlenswert, diese Proben im großen Probenahmeverfahren zu prüfen, um eine Querkontamination der Glasfasern während des Migrationsvorgangs zu vermeiden. Das Verfahren ist in Anhang A beschrieben. Wenn niedrigere Nachweisgrenzen gefordert sind, könnte dieses Verfahren ebenfalls zur Anwendung kommen.

Papiers et cartons destinés à entrer en contact avec les denrées alimentaires - Détermination de la solidité de la couleur des papiers et cartons colorés

Le présent document décrit les modes opératoires d’essai pour papiers et cartons colorés destinés à entrer en contact avec les denrées alimentaires. Plusieurs modes opératoires selon l’utilisation prévisible du matériau sont décrits.
L’examen visuel par rapport à une échelle de gris permet un classement du dégorgement.
Pour les échantillons dont les faces sont sensiblement différentes, une migration peut se produire d’une fibre de verre à l’autre et peut conduire à une mauvaise interprétation de la solidité d’une face. Il est recommandé de vérifier ces échantillons à l’aide d’un mode opératoire d’échantillonnage utilisant des échantillons de grande taille afin d’empêcher la contamination croisée de la fibre de verre au cours de la procédure de migration. Le mode opératoire est décrit à l’Annexe A. Si une limite de détection inférieure est requise, ce mode opératoire peut également être utilisé.

Papir, karton in lepenka, namenjeni za stik z živili - Ugotavljanje obstojnosti barve v obarvanem papirju, kartonu in lepenki

Ta dokument opisuje postopke za preskušanje barvanega papirja in kartona, namenjenega za neposreden stik z živili. Podani so nekateri postopki, odvisni od predvidene uporabe materiala. Vizualna ocena na lestvici sivih tonov omogoča razvrščanje izločljivosti. OPOMBA: Pri vzorcih, katerih strani se precej razlikujejo, lahko pride do prehajanja iz enega steklenega vlakna v drugega, kar lahko privede do napačnega prepoznavanja obstojnosti ene strani. Te vzorce je treba pregledati s postopkom velikega vzorčenja, da se prepreči navzkrižna kontaminacija steklenih vlaken med postopkom prehajanja. Postopek je opisan v dodatku A. Če je potrebna spodnja meja zaznavanja, se lahko uporabi tudi ta postopek.

General Information

Status
Published
Publication Date
20-Nov-2018
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
21-Nov-2018
Completion Date
21-Nov-2018

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SLOVENSKI STANDARD
SIST EN 646:2019
01-januar-2019
1DGRPHãþD
SIST EN 646:2006

Papir, karton in lepenka, namenjeni za stik z živili - Ugotavljanje obstojnosti barve

v obarvanem papirju, kartonu in lepenki

Paper and board intended to come into contact with foodstuffs - Determination of colour

fastness of dyed paper and board
Papier und Pappe vorgesehen für den Kontakt mit Lebensmitteln - Bestimmung der
Farbechtheit von gefärbtem Papier und Pappe
Papiers et cartons destinés à entrer en contact avec les denrées alimentaires -
Détermination de la solidité de la couleur des papiers et cartons colorés
Ta slovenski standard je istoveten z: EN 646:2018
ICS:
67.250 Materiali in predmeti v stiku z Materials and articles in
živili contact with foodstuffs
85.060 Papir, karton in lepenka Paper and board
SIST EN 646:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 646:2019
---------------------- Page: 2 ----------------------
SIST EN 646:2019
EN 646
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2018
EUROPÄISCHE NORM
ICS 67.250; 85.060 Supersedes EN 646:2006
English Version
Paper and board intended to come into contact with
foodstuffs - Determination of colour fastness of dyed paper
and board

Papiers et cartons destinés à entrer en contact avec les Papier und Pappe vorgesehen für den Kontakt mit

denrées alimentaires - Détermination de la solidité de Lebensmitteln - Bestimmung der Farbechtheit von

la couleur des papiers et cartons colorés gefärbtem Papier und Pappe
This European Standard was approved by CEN on 22 July 2018.

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-CENELEC 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-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 646:2018 E

worldwide for CEN national Members.
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SIST EN 646:2019
EN 646:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Terms and definitions ................................................................................................................................... 4

4 Principle ............................................................................................................................................................. 4

5 Materials and equipment ............................................................................................................................. 5

6 Reagents ............................................................................................................................................................. 5

7 Sampling ............................................................................................................................................................. 5

8 Preparation of sample ................................................................................................................................... 6

9 Procedure........................................................................................................................................................... 6

10 Test conditions ................................................................................................................................................. 6

11 Evaluation .......................................................................................................................................................... 7

12 Test report ......................................................................................................................................................... 7

Annex A (informative) Determination of the fastness of fluorescent whitened paper and

board on large samples ................................................................................................................................. 8

A.1 Scope .................................................................................................................................................................... 8

A.2 Preparation of large samples ...................................................................................................................... 8

A.3 Test report ......................................................................................................................................................... 8

Bibliography .................................................................................................................................................................... 9

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SIST EN 646:2019
EN 646:2018 (E)
European foreword

This document (EN 646:2018) has been prepared by Technical Committee CEN/TC 172 “Pulp, paper

and board”, 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 May 2019, and conflicting national standards shall be

withdrawn at the latest by May 2019.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 646:2006.
With regard to EN 646:2006 the following changes have been made:
a) Clause 1 “Scope” has been revised and extended;

b) in Clause 6 “Reagents” the test fluid “saliva simulant ” has been removed and the test fluid “alkaline

salt solution” has been introduced;

c) new test conditions, matching the use of the tested papers and boards have been included;

d) new definition for the glass fibre papers has been included;
e) evaluation against a grey scale only has been included;
f) editorial changes.

Attention shall be drawn to the fact that the glassfibre papers have not been duly validated before the

publication of this standard.

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,

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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
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SIST EN 646:2019
EN 646:2018 (E)
1 Scope

This document describes procedures for the testing of dyed paper and board intended to come into

contact with foodstuffs. Some procedures depending on the foreseeable use of the material are given.

Visual evaluation against a grey scale provides grading of the bleeding.

For samples having significant different sides, a migration can occur from one glass fibre to the other

and could lead to wrong interpretation of the fastness of one side. It is advisable to check these samples

using large sampling procedure to prevent cross contamination of the glass fibre during the migration

procedure. The procedure is described in Annex A. If lower limit of detection is required, this procedure

could also be used.
2 Normative references
...

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