15 Jul FRETWORK SMOULDER TRIALS – 4
FRETWORK SMOULDER TRIALS – 4
So, now we return to the issue of so-called chemical free and natural fibre fillings.
We saw the problem in incorporating a fibre fill into the L shaped rig.
We had some specially prepared foam fillings in CM 26 kg foam cut down by 10 mm in thickness. The rigs are shown before to emphasise what they looked like and an earlier picture if the set 1 rigs is added for comparison.
We used the re-upholstery/art market canvas at 222 gsm as suitable weight natural fibre cover.
We placed cotton 100% on one sample between the foam and the cover and the second rig used a 60:40, wool:cotton fleece – sold as filling “FR”.
The cigarettes: We used Senior Service as the main IS but added a second to each rig after ca 7 mins. In this case we used a Benson and Hedges with the tip removed.
Well did we get smoulder?
Both cigarettes seem to work well with these combinations.
The cotton filling rig looks better but both are clear fails.
The foam was not touched by the smoulder and that point needs further thought (and testing).
It must be kept in mind that no one will use these sort of fillings and then a synthetic cover – will they? It seems only the test regime uses such combinations.
There must be concerns about naturally FR materials in this type of test and doubts about certain aspects of the FFR testing regime.