The TT suffix (TT = Tobacco Type) is added to the name of all Siegling Transilon belt types suitable for the tobacco industry. All tobacco types are food safe and pyrolysis compliant. Only conveyor belts made wholly of polyolefin, polyester or silicone fulfill the stringent requirements the tobacco industry places.
The tobacco industry demands the usage of conveyor belts that don’t form any products like nitrogen, sulphur, chlorine or fluorine that are hazardous to health during combustion. This is verified by pyrolytic cleavage, i.e. by burning the belt material at 800°C in the absence of oxygen. The mass fractions of the combustion products are then identified.
The FDA's and EU’s plastics regulations on direct contact with food protect consumers from substances which present a health risk. When conveying tobacco, unwanted substances could be transferred to the tobacco. Belt manufacturers don’t just have to comply with the regulations, but also need to indicate compliance on conformity declarations. Which we do of course provide for all belts in our tobacco range.