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EN 646:2018

Paper and board intended to come into contact with foodstuffs - Determination of colour fastness of dyed paper and board EN 646:2018

Publication date:   Apr 11, 2019

General information

90.20 Standard under periodical review   Jan 15, 2024

CEN

CEN/TC 172 Pulp, paper and board

European Norm

67.250   Materials and articles in contact with foodstuffs | 85.060   Paper and board

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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.

Life cycle

PREVIOUSLY

WITHDRAWN
EN 646:2006

NOW

PUBLISHED
EN 646:2018
90.20 Standard under periodical review
Jan 15, 2024