engleski

Size of the Ink Particles after Pulping in the Function of Print Ageing

The research results of the infl uence of print ageing on the size and number of ink particles on handsheet after disintegration of prints and their infl uence on the recycling effectiveness are presented in this work. The infl uence of the printing substrate and the composition of ink with regard to the renewable raw material proportion and detaching of the ink particles from the cellulose fi bers are discussed. The research results confi rm weaker recycling effectiveness of the aged prints, especially with inks with greater proportion of the renewable raw materials in relation to the non aged prints which can be explained by oxidative processes and chemical interaction between ink and the substrate.

offset prints; conventional inks; renewable raw materials; recycling; image analysis

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