Filaments can be food safe. What does this mean? It means the material is food contact safe. This goes for our range of co-polyesters (nGen, colorFabb_XT, colorFabb_HT and nGen_FLEX) where certain food contact standards apply to. Check our data sheets for more information: https://colorfabb.com/materials-data/
Please note that food contact approval applies to the filament alone. Official food safety compliance applies to the finished product alone. 3D printing is a process and materials are part of that process. Settings, temperature and the printer itself all matter in this process and should be considered before printing a product that will be used with food.
Although the printer is part of the process and is also subject to the compliance of the final product, there are no standards yet in FDM/FFF 3D printin which dictate which combination of materials, printer and settings guarantee official food contact compliance. There are several standards in the world (FDA compliance, EU 10/2011, BfR, etc. You should check with your local government and authority what standard applies.