Abstract: A machine for producing paper cutlery includes a paper feeding station; a processing station arranged to die-cut one or more sheets of paper arriving from the paper feeding station into uncoated cutlery; and a removal station that separates the uncoated cutlery from the sheets of paper. A recycling station extracts residual scrap paper generated by the processing station. The residual scrap paper was formed from the sheets of paper after the uncoated cutlery is cut and formed. The machine further includes a treatment station arranged to apply a viscous liquid material based on silicon and hydroxy groups to the uncoated cutlery to evenly coat the uncoated cutlery. The viscous liquid material is applied following removal of the residual scrap paper at the recycling station. An oven is provided to dry and crystallize the viscous liquid material on the uncoated cutlery to produce a plurality of coated cutlery.

Abstract: A process for the treatment of paper or cardboard surface is described that makes them impermeable to water, oil, and atmospheric gases, in particular oxygen. The invention also relates to the impermeable paper or cardboard thus obtained, which are particularly suitable for producing food product packaging or tableware.