Paper pergament in a roll
Now the pergament paper is used basically for packing of foodstuff: culinary products, the sandwiches, ready dishes from meat, fish, etc. It is applied in pharmacology and the technician as a packing material. It is made of a porous filtering paper. The filtering paper is processed 50 % by a solution of sulfuric acid, thus the cellulose part collapses and clogs up pores. The received paper compulsorily dry.