Posts Tagged ‘ paper functional chemicals ’

Influencing Printability in Paper Coating

Influencing Printability in Paper Coating The evenness of the printed image is a very important criterion for quality. The acceptance of coated paper by printers depends on its runnability in the printing process and its printability in terms of an even image that is free of defects. The printability of paper is principally determined...
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Influencing Printability in Paper Coating

Influencing Printability in Paper Coating The evenness of the printed image is a very important criterion for quality. The acceptance of coated paper by printers depends on its runnability in the printing process and its printability in terms of an even image that is free of defects. The printability of paper is principally determined...
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Paper Coating : Influencing Porosity, Print Gloss and Glueability

Influencing Porosity, Print Gloss and Glueability The gloss of the printed paper is determined by the smoothness of the paper surface and the ink holdout. In turn, the ink holdout is mainly determined by the porosity and the chemical and physical structure of the coated surface. Coatings need to be porous on a microscopic...
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Paper Coating : Influencing Opacity,Smoothness and Gloss

Influencing Opacity The main contribution to opacity has to come from the pigments. Synthetic prod¬ucts are usually less opaque than natural products and this can be a problem, especially when coating ULWC (ultra light weight) grades of paper. Products with a very pronounced thickening effect are only added in small quantities, so they hardly...
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Paper Coating OBA Carriers

Paper Coating OBA Carriers Optical brighteners work only when they are fixed to a carrier. A good carrier is linear and contains OH- or other hydrophilic groups. Linearity increases the con¬tact between the carrier and OBA so that physical bonds (such as hydrogen bonds and van der Waals forces) can be formed between the...
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