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The article analyzes the separation of fats from paper waste packaging. The method is based on interaction with boiling water and greaseproof paper. The cooking process is considered the formation of emulsions according to different slots. The research data are presented and discussed obtained from the analysis of ready-made samples. 20 different fat-coated paper samples have been prapared for research. Ten of them have been selected for printing paper, and another dozen cartons. The half of the samples analyzed are covered with vegetable fat, the remaining samples are vegetable fat. It was found that the carton samples were less opposed to the separation of fat. During the experiment, it was determined that by cooking the cardboard samples coated with olive oil for 5 minutes, 30% of the total fat content was removed. The most effective samples of this type were heated for a long time. [ABSTRACT FROM AUTHOR]

The article experimentally investigates the properties of offset print friction and determines static and kinetic coefficients of friction. Conventional and UV inks have been found to increase the static friction coefficient and reduce the kinetic friction coefficient between paper and print. The roughness properties of two different types of paper and prints using conventional and UV inks have been examined and compared thus determining that conventional inks strongly increase the roughness of print surface and that the influence of UV inks depend on the type of paper. [ABSTRACT FROM AUTHOR]

In the paper the folding quality in the printing house "BALTO" is investigated. The concept of quality, paper folding process, combined folding machine parameters and printing papers are described. In the paper the percent of folding defects is determined, the spoilage dependence on paper characteristics, folding machine settings and other factors are investigated. Results were presented as histograms and were analyzed using statistical methods. [ABSTRACT FROM AUTHOR]

Paper and prints on it are analyzed as composite materials. Printing, varnishing and lamination are described in terms of the formation of the composite material. The article discusses why and how the properties of a print should differ from the properties of paper. [ABSTRACT FROM AUTHOR]

Varnishing quality and the gloss of lithographic prints on different papers and cardboards were evaluated using expertise rating. It was found that varnishing quality and gloss increase with grammage do not depend on the varnish grade (two grades were tested) and is the same for the paper and cardboard of the same grammage.. [ABSTRACT FROM AUTHOR]