How will a vinylized fabric, such as PVC, perform in the TB 133 test?
A. The bureau has found that typical vinyl type fabrics may create difficulties in the TB 133 test. Often there appears to be antagonism between some types of PVC fabrics and typical cushioning materials, which cause the smoke and carbon monoxide levels to exceed the test criteria. This can often be resolved by use of fire-blocking layers. These may be separate blockers which are placed between the PVC fabric and the cushioning materials, or the fire blocker may be incorporated into the design of the vinyl fabric. In the latter case, a separate fire blocker would not be necessary.
