EN ISO 6941:1995

Textile fabrics - Burning behaviour - Measurement of flame spread properties of vertically oriented specimens (ISO 6941:1984, including Amendment 1:1992)

This standard specifies a method for the measurement of flame spread properties of vertically oriented textile fabrics in the form of single or multi-component fabrics.

Textilien - Brennverhalten - Messung der Flammenausbreitungseigenschaften vertikal angeordneter Proben (ISO 6941:1984, einschließlich Änderung 1:1992)

Diese internationale Norm beschreibt ein Verfahren zur Messung der Flammenausbreitungseigenschaften vertikal angeordneter Textilien für Bekleidung, Vorhänge und Gardinen in Form von Ein- oder Mehrkomponentenstoffen (beschichtet, gesteppt, mehrlagig, Verbundkonstruktion und ähnliche Kombinationen). Die Methode sollte ausschliesslich dazu verwendet werden, um die Eigenschaften von Materialien oder Systemen in Reaktion auf Flammenhitze unter kontrollierten Laborbedingungen zu beurteilen.

Textiles - Comportement au feu - Détermination des propriétés de flamme d'éprouvettes orientées verticalement (ISO 6941:1984, amendement 1:1992 inclus)

Tekstilije - Gorljivost - Meritve razširjanja plamena navpično nameščenih preskušancev (ISO 6941:1984, vključno z amandmajem 1:1992)

General Information

• Status: Withdrawn
• Publication Date: 08-Jan-1995
• Withdrawal Date: 30-Nov-2003
• ICS: 13.220.40 - Ignitability and burning behaviour of materials and products
• Technical Committee: CEN/TC 248 - Textiles and textile products
• Drafting Committee: CEN/TC 248/SC 2 - Physical properties
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: 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)

Relations

• Replaced By: EN ISO 6941:2003 - Textile fabrics - Burning behaviour - Measurement of flame spread properties of vertically oriented specimens (ISO 6941:2003)
• Effective Date: 22-Dec-2008

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 6941:1999
01-marec-1999
7HNVWLOLMH*RUOMLYRVW0HULWYHUD]ãLUMDQMDSODPHQDQDYSLþQRQDPHãþHQLK
SUHVNXãDQFHY,62YNOMXþQR]DPDQGPDMHP
Textile fabrics - Burning behaviour - Measurement of flame spread properties of vertically
oriented specimens (ISO 6941:1984, including Amendment 1:1992)
Textilien - Brennverhalten - Messung der Flammenausbreitungseigenschaften vertikal
angeordneter Proben (ISO 6941:1984, einschließlich Änderung 1:1992)
Textiles - Comportement au feu - Détermination des propriétés de flamme d'éprouvettes
orientées verticalement (ISO 6941:1984, amendement 1:1992 inclus)
Ta slovenski standard je istoveten z: EN ISO 6941:1995
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 6941:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 6941:1999

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SIST EN ISO 6941:1999

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SIST EN ISO 6941:1999

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SIST EN ISO 6941:1999

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SIST EN ISO 6941:1999

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SIST EN ISO 6941:1999
International Standard
INTERNATIONAL ORGANIZATION FOR STANDARDIZATlON.MEXAYHAPOAHAR OPrAHWAUMfi f-IO CTAHAAPT~3A~MM~RGANlSATlON INTERNATIONALE DE NORMALISATION
Textile fabrics - Burning behaviour - Measurement of
flame spread properties of vertically oriented specimens
Textiles - Comportement au feu - Dhtermination des propriMs de propagation de flamme d%prouvettes orient&es
verticalemen t
First edition - 1984-08-15
Ref. No. IS0 6941-1984 (E)
UDC 677.064 : 620.1 : 677.017.56
Descriptors : textiles, fabrics, tests, fire tests, determination, flame propagation, test equipment, burners.
Price based on 8 pages

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SIST EN ISO 6941:1999
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of developing International
Standards is carried out through IS0 technical committees. Every member body
interested in a subject for which a technical committee has been authorized 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.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council.
International Standard IS0 6941 was developed by Technical Committee lSO/TC 38,
Texti/es, and was circulated to the member bodies in July 1983.
It has been approved by the member bodies of the following countries:
Australia
Ghana Poland
Belgium Hungary Portugal
Brazil
India Romania
Bulgaria Iraq South Africa, Rep. of
Canada Ireland Spain
China Israel Sri Lanka
Sweden
Czechoslovakia Italy
Denmark Jamaica Switzerland
Egypt, Arab Rep. of Japan Tanzania
Finland Kenya Turkey
France Korea, Rep. of USSR
Germany, F. R. New Zealand Yugoslavia
document
The member bodies of the following countries expressed disapproval of the
on technical ground s:
Netherlands
United Kingdom
0 International Organization for Standardization, 1984
Printed in Switzerland

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SIST EN ISO 6941:1999
INTERNATIONAL STANDARD IS0 6941-1984 (E)
Burning behaviour - Measurement of
Textile fabrics -
flame spread properties of vertically oriented specimens
-
1 Scope and field of application 4 Principle
This International Standard specifies a method for the measure- A defined ignition flame from a specified burner is applied for a
defined period of time to textile specimens which are vertically
ment of flame spread properties of vertically oriented textile
oriented. The flame spread time is the time in seconds for a
fabrics intended for apparel, curtains and draperies in the form
of single- or multi-component (coated, quilted, multilayered, flame to travel between marker threads located at defined
distances. Other properties relating to flame spread may also be
sandwich construction and similar combinations) fabrics.
observed, measured and recorded.
The method should be used solely to assess the proper-
NOTE - Attention is drawn to annex B regarding quality of ex-
ties of materials or systems in response to heat flame
perimental techniques.
under controlled laboratory conditions. The results may
not apply to situations where there is restricted air supply
or prolonged exposure to heat as in a conflagration.
5 Health and safety of test operators
Burning of textiles may produce smoke and toxic gases which
2 References
can affect the health of operators. The testing area should be
cleared of smoke and fumes by suitable means.
IS0 139, Textiles - Standard atmospheres for conditioning
and testing.
6 Apparatus and materials
IS0 4880/I, Burning behaviour of textiles and textile prod-
ucts - Vocabulary - Part 7.
6.1 Construction of testing equipment
3 Definitions
Some products of combustion are corrosive. The equipment
should be constructed of material which will not be adversely
For the purpose of this International Standard, the following
affected by the fumes.
definitions apply (see IS0 4880/l) :
3.1
afterflame : Persistence of flaming of a material, under
6.2 Location of test
specified test conditions, after the ignition source has been
removed.
A location in which the air movement is less than 0,2 m/s at the
commencement of the test and is not further influenced by
mechanical devices operating during the test is required. The
3.2 afterflame time : The length of time for which a material
volume of air surrounding the test location shall be such that
continues to flame, under specified test conditions, after the
the test is not affected by any reduction of oxygen concentra-
ignition source has been removed. (Also called Duration of
tion. Where an open-fronted cabinet is used for the test, provi-
flame.)
sion shall be made to permit the specimen to be mounted at
least 300 mm from any wall.
3.3 afterglow: Persistence of glowing of a material, under
specified test conditions, after cessation of flaming or, if no
flaming occurs, after removal of the ignition source.
6.3 Template
3.4 afterglow time : The time for which a material con-
A flat rigid template made of suitable material and of a size
tinues to glow, under specified test conditions, after cessation
corresponding to the size of the specimen shall be used. Holes
of flaming, or after removal of the ignition source. (Also called
approximately 2 mm diameter are drilled in the template and
Duration of afterglow.)
positioned so that the distances between the centres of the
holes correspond to the distances between the pins on the
3.5 flame spread time: The time taken by a flame on a frames (see figure 1). The holes shall be located equidistant
burning material to travel a specified distance under specified about the vertical centrelines of the template (see the note
in 7.2).
test conditions.
1

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SIST EN ISO 6941:1999
IS0 6941-1984 (E)
7.3 Number
6.4 Specimen holder
Cut three specimens from each of the length direction and the
A specimen holder consisting of a rectangular frame 560 mm
width direction. Where the two surfaces of the fabric are dif-
high having two rigidly connected parallel rods spaced 150 mm
ferent, cut another set of specimens and test both surfaces.
apart on which are fitted pins for mounting the test specimen
Where the two surfaces are similar test the face side of the
which is located in a plane at least 20 mm from the frame. The
fabric. Extra specimens may be needed if retesting is necessary
mounting pins shall be not greater than 2 mm diameter and at
(see 8.8).
least 27 mm long. The pins are located on the parallel rods at
locations shown in figure I. The frame is fitted onto a suitable
NOTE - The flame spread time for a fabric may depend on whether
support to maintain the rods in a vertical orientation during
the machine direction is upwards or downwards, or whether the face
testing.
or the back of the fabric is ignited.
NOTE - For the purpose of locating the specimen on the pins in a
plane away from the frame, spacer stubs 2 mm diameter may be pro-
7.4 Conditioning of test specimens
vided adjacent to the pins.
Condition test specimens in one of the following ways:
6.5 Gas burner
a) in the standard temperate atmosphere of 20 + 2 OC
and (65 + 2) % rh in accordance with IS0 139;
A gas burner as described in annex A.
b) drying in an oven at 105 + 2 OC for not less than I h,
then cooling in a desiccator for at least 30 min; or
NOTE - Small differences in the design and dimensions of the burner
can influence the configuration of the burner flame and so affect the
c) any other conditioning atmosphere as agreed by the in-
results of the tests.
terested parties.
6.6 Gas
8 Procedure
Commercial grade propane or butane gas.
8.1 Carry out the test in an atmosphere having a temperature
between IO and 30 OC and a relative humidity between I5 %
6.7 Marker threads
and 80 % .
White mercerized cotton threads having a maximum linear den-
8.2 Light the burner and preheat it for 2 min. Adjust the
sity of 50 tex.
flame height to 40 If: 2 mm measured as the distance between
the top of the burner tube and the tip of the yellow part of the
flame when the burner is vertically oriented and the flame is
6.8 Timing devices
viewed in dim light.
An appropriate number of suitable timing devices having an ac-
8.3 If testing is not being performed immediately, place the
curacy of at least 0,2 s.
specimens in sealed containers un
...