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Measurement of Flame Propagation Properties of Vertical Test Specimens
Measurement of Flame Propagation Properties of Vertical Test Specimens

In order to obtain fabrics which are flammable and prevent flame spread, it is necessary to use force-retaining fibers during fabric weaving, or to make the fabric force-retention by applying a number of chemical processes, or to apply both methods, as the case may be. Fireproof fibers in their structure have a thermally stable chemical structure, such as polyaramide or similar aromatic structures. When producing synthetic fibers, chemicals are added to the polymer, which give them the power to ignite. Sometimes the structure of the fibers is changed using a number of chemical methods.

It is a difficult process to add additives that impart strength to the polymer. It is therefore easier to obtain fabric from flame retardant fibers in structure. Moreover, these fabrics are more durable in terms of washing and service life. Some finishing processes provide a very high use resistance, but the excessive use of some chemicals deteriorates the use properties of the fabric.

In order to be successful, it is necessary to maintain acceptable power ignition levels and use appropriate textile finishing tools.

The following standards are applied by the accredited laboratories to test the flame spread properties of test specimens in the vertical position:

  • BS EN ISO 6941 Textile fabrics - Combustion behavior - Measurement of flame spread properties of vertically oriented samples
  • TS EN ISO 6941 Textile fabrics - Combustion properties - Measurement of flame propagation properties of samples in vertical position

This standard specifies a method for determining the flame spreading properties of single- or multi-component (coated, multi-base, quilted, sandwich-structured, and similar) textile products used in the construction of large awnings covering clothing, drapery and draped fabrics and tarpaulins and tents.