Coated paper

Coated paper (also art or paper) is a paper, in which the surface with a binding contract ( "dash " ) is refined. As material for the binder application called coating color is used, the main component may be chalk, kaolin, casein or synthetic dispersion. The paper is thus a more closed, smoother and more stable surface, creating a high detail rendition and better printing quality is achieved.

The bar can be matt or shiny, one or both sides. By knife or air knife or using a scraper ( "Blade" ) may at papers where high demands are placed on a smooth and shiny surface (eg for picture books ), up to three times line are plotted. Basically, all papers are after the semicolon at first dull. To get a glossy paper, you can also run it through the calender, which smoothes the paper by printing two rolls. It is between

• Matt-coated papers,
• Semi- matt-coated papers,
• Glossy papers and
• Cast-coated papers

Distinguished.

History

Coated papers have been known in ancient China and Arabia. It was used starch and minerals that have been painted by hand on the paper surface ( Handpapiermacherei ). The craftsmanship Buntpapiermacherei Europe practiced alongside other techniques sometimes the coating method for the production of simple colored papers. Retired coating colors were first introduced in 1866 in Dresden applied with a roller on paper and then rubbed with a brush and smoothed. The further development was promoted in Germany, for example, through the stained paper factory in Aschaffenburg and countless other paper mills in Europe. Scheufelen founded in 1892 presented the first coated with satin white and chalk art paper in Europe fro.

Since then, the coating technology - further refined, both in terms of the composition of coating colors, as well as the mechanical equipment - even in the wake of demands on the printability of papers. The stroke order ( line weight) is now depending on the purpose of the paper between 5 and 20 g / m², and depending on the use of one or both sides, single or double (sometimes triple) is deleted. In connection with a subsequent calendering certain degrees of gloss of the paper surface can be adjusted, eg matt, semi matt, gloss or high gloss. The technical development of online coating machines resulted in machines with a width of about 10 meters and a speed of about 3000 m / min.