For each material or group of materials, 7 samples will be prepared in the warp direction (except for leather) measuring 260 mm x 100 mm.
That same is done with a sheet of PVC (faux leather).
First, the cut PVC sample is placed and then the fabric sample to be tested is placed on top of it. Different quantities of molten metal are poured over the fabric sample, which has been placed at a certain angle depending on the metal used, and the damage caused to the fabric and the sheet of PVC is evaluated. Other metals, such as copper, tempered steel and cryolite have been subjected to standardisation.