1、BSI Standards Publication Textile floor coverings Guidelines for acceptable colour deviations PD CEN/TS 16641:2014National foreword This Published Document is the UK implementation of CEN/TS 16641:2014. A t t e n t i o n i s d r a w n t o t h e f a c t t h a t d u r i n g t h e d e v e l o p m e n t
2、 o f t h i s T e c h n i c a l S p e c i f i c a t i o n , t h e U K v o t e d a g a i n s t i t s a p p r o v a l . T h e r e a s o n f o r t h i s i s t h a t U K c o m m i t t e e c o n s i d e r s t h e m e t h o d f o r d e t e r m i n i n g c o l o u r m a t c h h a s s o m e l i m i t a t i o
3、 n s . A t l e a s t + 0 . 5 o f a g r a d e c o u l d m a k e t h e d e c i s i o n b o r d e r l i n e , t h e r e f o r e , i t i s s u g g e s t e d t h a t i n s t r u m e n t a l c o l o u r m e a s u r e m e n t i s u s e d . The UK participation in its preparation was entrusted to Technical
4、Committee PRI/3, Textile floor coverings. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standar
5、ds Institution 2014. Published by BSI Standards Limited 2014 ISBN 978 0 580 86312 7 ICS 59.080.60 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published under the authority of the Standards Policy and Strategy Committee on 30 April 201
6、4. Amendments/corrigenda issued since publication Date Te x t a f f e c t e d PUBLISHED DOCUMENT PD CEN/TS 16641:2014 TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 16641 March 2014 ICS 59.080.60 English Version Textile floor coverings - Guidelines for acceptable colo
7、ur deviations Revtements de sol textiles - Lignes directrices pour les carts de couleur acceptables Textile Bodenbelge - Leitlinien fr akzeptable Farbabweichungen This Technical Specification (CEN/TS) was approved by CEN on 26 November 2013 for provisional application. The period of validity of this
8、 CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in the same way as
9、for an EN and to make the CEN/TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the
10、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,
11、 Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any
12、 means reserved worldwide for CEN national Members. Ref. No. CEN/TS 16641:2014 E PD CEN/TS 16641:2014CEN/TS 16641:2014 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 General information on colour deviation and initial requirements 4 4.1 Carpet manufact
13、uring .4 4.2 Installation 4 5 Assessment of colour deviation 4 6 Requirements for acceptance 5 7 Report .5 PD CEN/TS 16641:2014CEN/TS 16641:2014 (E) 3 Foreword This document (CEN/TS 16641:2014) has been prepared by Technical Committee CEN/TC 134 “Resilient, textile and laminate floor coverings”, the
14、 secretariat of which is held by NBN. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulation
15、s, the national standards organizations of the following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, It
16、aly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. PD CEN/TS 16641:2014CEN/TS 16641:2014 (E) 4 1 Scope This Technical Specification gives guidance in case of complaints when a colou
17、r deviation is observed after installation of a textile floor covering by the installer and/or end user. The colour deviation can be observed within different parts of the installation or between the installed textile floor covering and the initially presented sample on which the choice for ordering
18、 was made. 2 Normative references The 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 undated references, the latest edition of the referenced document (includin
19、g any amendments) applies. CEN/TS 14472-2, Resilient, textile and laminate floor coverings - Design, preparation and installation - Part 2: Textile floor coverings EN 20105-A02, Textiles -Test for colour fastness - Part A02: Grey scale for assessing change in colour (ISO 105-A02) ISO 2424, Textile f
20、loor coverings - Vocabulary 3 Terms and definitions For the purposes of this document the terms and definitions of ISO 2424 apply. 4 General information on colour deviation and initial requirements 4.1 Carpet manufacturing During the manufacturing of textile floor coverings (carpets) it is not alway
21、s possible to maintain equal colour nuances. Slight differences in colour can occur due to different dyeing methods, visual colour assessment, changes in manufacturing processes, different dates of completion, subsequent deliveries, etc. 4.2 Installation Textile floor coverings are intended to be in
22、stalled according to the general installation guideline CEN/TS 14472-2 and to the manufacturers installation manual. It is recommended to install in one and the same room textile floor covering of the same production batch. The requirement for colour uniformity is restricted to one room and basicall
23、y ends at the doors, unless otherwise agreed. For larger projects it is recommended to agree with the manufacturer an installation plan, so that the total amount can be subdivided into smaller, colour-equal production batches or a combination of colour-equal production batches. The installer shall c
24、heck the colour uniformity of the textile floor covering at the moment of installation. When installing different sheets or carpet tiles in one room, the colour uniformity is only relevant when the pile direction for all parts is in the same direction, linear to each other. A different pile directio
25、n can cause a different colour impression. 5 Assessment of colour deviation Colour deviation shall be assessed by using the larger grey scales according to EN 20105-A02. The grey scales consist of five pairs of mat, grey fabrics. The five pairs represent the colour distances which correspond to the
26、colour fastness grades 5, 4, 3, 2 and 1. PD CEN/TS 16641:2014CEN/TS 16641:2014 (E) 5 The first band of each pair is in neutral grey and the second band of the pair which represents fastness 5, is equal to the initial sample. The second bands of the other pairs represent, from 4 to 1, increasingly cl
27、ear grey tones, so that each pair shows increasing contrasts or colour distances which have been determined in a colourimetric way. The colour difference can be determined by one or more of the following colour characteristic features: colour tone, colour depth and purity (brilliant). During the ass
28、essment the colour deviation on the textile floor covering shall be compared with the different colour distances of the grey scales. The grey scale coming most closely to the colour deviation on the textile floor covering gives the result of the assessment. A result of colour fastness scale 5 is giv
29、en when no colour deviation is observed. The assessment shall be performed on an area representative for the complaint. The assessment shall be performed by at least three different assessors. The median value of all assessors is reported as the final result of the assessment. 6 Requirements for acc
30、eptance In larger areas where more production batches are needed to cover the floor, limited deviations in colour tone are no reason for complaints if the overall image of the carpet is not substantially harmed. When assessing colour deviations in new installations, attention is needed for the final
31、 application and the fully equipped room. The furnishing, artificial lighting and shades can cover a big part of the floor covering, resulting in a situation where the colour deviation is not visible anymore or will be no longer a relevant factor. An observed colour difference corresponding to grade
32、 4 on the grey scale is considered to be production- bound and is therefore an acceptable colour deviation. If a colour difference corresponding to grade 3 on the grey scale is observed, the decision on the acceptance will depend on the degree to which the colour deviation harms the overall view. An
33、 observed colour difference lower than grade 3 on the grey scale, is not acceptable. 7 Report The results of the colour deviation assessment shall be written in a report, indicating: a) the location of assessment; b) a description of the room situation; c) the number of assessors; d) the assessment
34、result of each individual assessor; e) the median of all assessments. PD CEN/TS 16641:2014CEN/TS 16641:2014 (E) 6 Bibliography EN ISO 105-A01, Textiles - Tests for colour fastness - Part A01: General principles of testing (ISO 105-A01) PD CEN/TS 16641:2014This page deliberately left blankBSI is the
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