Mandatory
Recommended
Other region
Not specified
European EN ISO 6940 and ISO 6941
METHOD OF TESTING
A flame is applied to a vertically oriented textile fabric to determine the mean ignition time and the flame spread properties.
Test method
A test specimen is oriented vertically on a specimen holder. The burner is either placed horizontally at the height of the specimen (surface ignition) or at an angle of 30° below the specimen (bottom edge ignition). If ignition occurs, the ignition time is recorded.
ISO 6940: This test assesses the ease of ignition of vertically oriented specimens. The flame is applied to the test material for a maximum 2of 0 seconds or until ignition time occurs. The ignition time is recorded. When 5 instances of ignition are obtained, the ignition time of the test material is calculated.
ISO 6941: This test measures the flame spread properties of vertically oriented specimens. The flame is applied to the test material for 10 seconds or during the ignition time calculated following ISO 6940. The time needed to reach three marker threads.
Result
The test material is judged by the ignition time and the flame spread properties.
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