Measurements of Coating Colors

2011-12-03T00:03:54+00:00 Categories: Coating|Tags: , , , , , , , , , |

Measurements of Coating Colors The shear-viscosity and viscoelastic properties of paper coatings and their time-dependent behavior are important attributes that need to be measured for better understanding and optimization of the process. Viscosity Viscosity is measured with rheometers or viscometers. The methods used include rotational deformation, squeezing deformation, extrusion (capillary) flows, and free surface stretching. [...]

Coating Color Formulations

2017-01-08T00:14:29+00:00 Categories: Coating|Tags: , , , , , , , , |

Coating Color Formulations The main driving forces to develop new or improved coating color formulations are: . • customer needs for improved coated paper quality such as higher brightness, print gloss and bulk, better coating coverage . • requirement of high uniformity of paper quality which calls for accurate process control during coating color formation, color application, and drying [...]

Paper Coating Color Preparation

2017-01-08T00:14:29+00:00 Categories: Coating|Tags: , , , , , , , , , , , |

Paper Coating Color Preparation 7.7.1 General Aspects of Coating Kitchen Set-up The objective of a coating color preparation plant is to prepare the desired amount of coating color in the required quality using a combination of mixing, pumping, storing, conveying, metering, and screening processes. Such a plant consists of storage tanks, pipelines, pumps, valves, mixer, [...]

Measurements of Coated Paper Surface

2017-01-08T00:14:29+00:00 Categories: Coating|Tags: , , , , , , , , , , |

Measurements of Coated Surface  Different printing methods have their own requirements for coated paper and paperboard. The coating amount has a big influence on the physical and optical surface properties. Physical properties are smoothness, gloss, surface strength, ink absorption, dusting/linting, piling and visual defects. Optical properties are brightness, whiteness, color shade, opacity, mottling and print [...]