SIST EN ISO 6941:2004

Textile fabrics - Burning behaviour - Measurement of flame spread properties of vertically oriented specimens (ISO 6941:2003)

ISO 6941:2003 specifies a method for the measurement of flame spread times of vertically oriented textile fabrics and industrial products in the form of single or multi-component fabrics (coated, quilted, multilayered, sandwich combinations, and similar combinations) when subjected to a small, defined flame.

Textilien - Brennverhalten - Messung der Flammenausbreitungseigenschaften vertikal angeordneter Proben (ISO 6941:2003)

Diese Internationale Norm legt ein Verfahren zur Messung der Flammenausbreitungszeit von vertikal angeordneten textilen Flächengebilden und industriellen Erzeugnissen, in Form von Einzel- oder Verbundtextilien (beschichtet, gesteppt, mehrlagig, Verbundkonstruktionen und ähnliche Kombinationen) fest, die einer kleinen definierten Flamme ausgesetzt werden.

Textiles - Comportement au feu - Détermination des propriétés de propagation de flamme d'éprouvettes orientées verticalement (ISO 6941:2003)

L'ISO 6941:2003 spécifie une méthode permettant de mesurer les durées de propagation de flamme des étoffes et produits industriels orientés verticalement par rapport à une flamme définie de petite taille; il peut s'agir d'étoffes simples ou complexes (textiles enduits, ouatés, multicouches, en sandwich et autres structures).

Tekstilije - Gorljivost - Meritve razširjanja plamena navpično nameščenih preskušancev (ISO 6941:2003)

General Information

• Status: Published
• Publication Date: 31-Jan-2004
• ICS: 13.220.40 - Ignitability and burning behaviour of materials and products
• ICS: 59.080.30 - Textile fabrics
• Technical Committee: ITEK - Textile and textile products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Feb-2004
• Due Date: 01-Feb-2004
• Completion Date: 01-Feb-2004
• Ref Project: EN ISO 6941:2003 - Textile fabrics - Burning behaviour - Measurement of flame spread properties of vertically oriented specimens (ISO 6941:2003)

Relations

• Replaces: SIST EN ISO 6941:1999 - Textile fabrics - Burning behaviour - Measurement of flame spread properties of vertically oriented specimens (ISO 6941:1984, including Amendment 1:1992)
• Effective Date: 01-Feb-2004

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 6941:2004
01-februar-2004
1DGRPHãþD
SIST EN ISO 6941:1999
7HNVWLOLMH*RUOMLYRVW0HULWYHUD]ãLUMDQMDSODPHQDQDYSLþQRQDPHãþHQLK
SUHVNXãDQFHY,62
Textile fabrics - Burning behaviour - Measurement of flame spread properties of vertically
oriented specimens (ISO 6941:2003)
Textilien - Brennverhalten - Messung der Flammenausbreitungseigenschaften vertikal
angeordneter Proben (ISO 6941:2003)
Textiles - Comportement au feu - Détermination des propriétés de propagation de
flamme d'éprouvettes orientées verticalement (ISO 6941:2003)
Ta slovenski standard je istoveten z: EN ISO 6941:2003
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
59.080.30 Tkanine Textile fabrics
SIST EN ISO 6941:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 6941:2004

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SIST EN ISO 6941:2004
EUROPEAN STANDARD
EN ISO 6941
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2003
ICS 13.220.40; 59.080.30 Supersedes EN ISO 6941:1995
English version
Textile fabrics - Burning behaviour - Measurement of flame
spread properties of vertically oriented specimens (ISO
6941:2003)
Textiles - Comportement au feu - Détermination des Textilien - Brennverhalten - Messung der
propriétés de propagation de flamme d'éprouvettes Flammenausbreitungseigenschaften vertikal angeordneter
orientées verticalement (ISO 6941:2003) Proben (ISO 6941:2003)
This European Standard was approved by CEN on 21 November 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, 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
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6941:2003 E
worldwide for CEN national Members.

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SIST EN ISO 6941:2004
EN ISO 6941:2003 (E)
CORRECTED  2004-03-03
Foreword
This document (EN ISO 6941:2003) has been prepared by Technical Committee ISO/TC 38
"Textiles" in collaboration with Technical Committee CEN/TC 248 "Textiles and textile products",
the secretariat of which is held by BSI.
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 June 2004, and conflicting national
standards shall be withdrawn at the latest by June 2004.
This document supersedes EN ISO 6941:1995.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
Endorsement notice
The text of ISO 6941:2003 has been approved by CEN as EN ISO 6941:2003 without any
modifications.
NOTE Normative references to International Standards are listed in annex ZA (normative).
2

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SIST EN ISO 6941:2004
EN ISO 6941:2003 (E)
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE Where an International Publication has been modified by common modifications, indicated
by (mod.), the relevant EN/HD applies.
Publication Year Title EN Year
ISO 6940 1984 Textile fabrics - Burning behaviour - EN ISO 6940 1995
Determination of ease of ignition of
vertically oriented specimens
ISO 6940 2004 Textile fabrics - Burning behaviour - EN ISO 6940 2004
Determination of ease of ignition of
vertically oriented specimens
3

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SIST EN ISO 6941:2004

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SIST EN ISO 6941:2004


INTERNATIONAL ISO
STANDARD 6941
Second edition
2003-11-15


Textile fabrics — Burning behaviour —
Measurement of flame spread properties
of vertically oriented specimens
Textiles — Comportement au feu — Détermination des propriétés de
propagation de flamme d'éprouvettes orientées verticalement




Reference number
ISO 6941:2003(E)
©
ISO 2003

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SIST EN ISO 6941:2004
ISO 6941:2003(E)
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ii © ISO 2003 — All rights reserved

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SIST EN ISO 6941:2004
ISO 6941:2003(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope. 1
2 Normative references . 1
3 Terms and definitions. 1
4 Principle . 1
5 Apparatus. 2
6 Precautions. 5
7 Sampling . 7
8 Conditioning and testing atmosphere . 8
9 Setting up the apparatus. 8
10 Test procedure . 9
11 Precision . 10
12 Test report. 10
Annex A (normative) Description and construction of the burner. 12
Annex B (informative) Experimental techniques. 13

© ISO 2003 — All rights reserved iii

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SIST EN ISO 6941:2004
ISO 6941:2003(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 6941 was prepared by Technical Committee ISO/TC 38, Textiles, Subcommittee SC 19, Burning
behaviour of textiles and textile products.
This second edition cancels and replaces the first edition (ISO 6941:1984), which has been technically revised.
iv © ISO 2003 — All rights reserved

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SIST EN ISO 6941:2004
ISO 6941:2003(E)
Introduction
This method is one of two closely related methods of test for the inflammability of textile fabrics. This method
determines the “flame spread time” — vocabulary in relation to the term defined in ISO 4880 — the other
method observes and measures “ease of ignition” (see ISO 6940).
This method assesses the properties of textile fabrics in response to flame contact under controlled conditions.
Results may not apply to situations where there is restricted air supply or exposure to large sources of intense
heat.
The influence of seams on the behaviour of fabrics can be determined by this method, the seam being
positioned within the test specimen so as to be subjected to the test flame. Whenever practicable, trimmings
should be tested as part of the fabric assembly on which they are or will be used.

© ISO 2003 — All rights reserved v

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SIST EN ISO 6941:2004

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SIST EN ISO 6941:2004
INTERNATIONAL STANDARD ISO 6941:2003(E)

Textile fabrics — Burning behaviour — Measurement of flame
spread properties of vertically oriented specimens
1 Scope
This International Standard specifies a method for the measurement of flame spread times of vertically
oriented textile fabrics and industrial products in the form of single or multi-component fabrics (coated, quilted,
multilayered, sandwich combinations, and similar combinations) when subjected to a small, defined flame.
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 4880:1997, Burning behaviour of textiles and textile products — Vocabulary
ISO 6940, Textile fabrics — Burning behaviour — Determination of ease of ignition of vertically oriented
specimens
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
flame application time
time for which the ignition flame is applied to the test specimen
3.2
flame spread time
time taken by a flame on a burning material to travel a specified distance under specified test conditions
4 Principle
A defined flame from a specified burner is applied for 10 s to the surface or the bottom edge of textile
specimens that are vertically oriented. The flame spread times in seconds for the flame front to travel between
marker threads positioned adjacent to the surface of the test specimen and located at three distances from the
igniting flame, are recorded.
© ISO 2003 — All rights reserved 1

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SIST EN ISO 6941:2004
ISO 6941:2003(E)
5 Apparatus
5.1 Mounting frame, constructed to a design capable of holding the gas burner (5.2), see Figure 1, and the
test specimen holder (5.3), see Figure 2, in the specified relative orientation, see Figure 3.
The design shall also permit three marker threads (see 5.7) to be attached in the positions shown in Figure 2.
At each location the marker thread is mounted as a loop so that the two segments are spaced 1 mm and
5 mm from the plane of the front of the specimen. Each loop is attached to a different timing device (5.6.2).
Dimensions in millimetres

a) Gas burner arrangement



b) Gas jet
Figure 1 — Gas burner

2 © ISO 2003 — All rights reserved

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SIST EN ISO 6941:2004
ISO 6941:2003(E)
Dimensions in millimetres

c) Flame stabilizer



d) Burner tube
Key
1 gas jet
2 burner tube
3 flame stabilizer
4 choke tube
5 notch
6 gas mixing zone
7 diffusion zone
8 air chamber
9 outlet
a
Fitted during assembly.
Figure 1 — Gas burner (continued)
© ISO 2003 — All rights reserved 3

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SIST EN ISO 6941:2004
ISO 6941:2003(E)
Dimensions in millimetres

Key
1 third marker thread
2 second marker thread
3 fabric specimen
4 first marker thread
5 mounting pins
6 spacer stubs (optional)
7 burner (oriented for surface ignition)
Figure 2 — Specimen holder
5.2 Gas burner, as shown in Figure 1 and described in Annex A, capable of being moved from a standby
position, where the tip of the burner is at least 75 mm from the test specimen to either the horizontal or
inclined operating position, see Figure 3.
5.3 Specimen holder, consisting of a rectangular metal frame having 12 specimen support pins mounted
along the longer edge of the rectangle of length 560 mm by width 150 mm, see Figure 2. The pins for
supporting the specimen are 5 mm, 10 mm, 190 mm, 370 mm, 550 mm and 555 mm above the bottom edge
of the frame and have a minimum length of 26 mm.
NOTE Longer pins may be needed for mounting thick or multilayer specimens.
4 © ISO 2003 — All rights reserved

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SIST EN ISO 6941:2004
ISO 6941:2003(E)
For the purpose of locating the specimen in a plane at least 20 mm away from the frame (see 9.1.1 and 9.2.1),
a spacer stub of 2 mm diameter and a length of at least 20 m
...