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Author Archives: admin
Opacity of paper – printing opacity
Opacity is an important optical property of paper. The opacity of paper is also known as printing opacity. It is expresses as a percentage. It means as the percentage of visible light that does not transmit through a sheet of … Continue reading
Dispersing Agent for Paper Making
Dispersing agent is used in paper making process as additive to provide uniform stock by separating fiber or particles and to prevent clumping and setting. It is a polymer compound with high molecular weight. Normally it is white fine granulated … Continue reading
Rhodamine b dye
Rhodamine B is a organic compound and it is a basic dye. In paper mill it is used as dye for making pink color paper. The chemical formula of Rhodamine B is C28H31N2O3Cl. The IUPAC name of the compound is … Continue reading
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Bursting strength of paper
Bursting strength machine is used to test strength of the different kinds of paper and paperboard. The operating system of the tester is very easy. It is very important and widely used measurement. It is defined as the required minimum … Continue reading
Secondary fiber
The fibers that are already used for paper manufacturing process are known as secondary fiber or recycled fiber. Different grade of waste paper are the sources of it. Even, dry end broke, cutter and finishing section broke are also included … Continue reading
Paper mill wood chipper
Wood chipper is used in paper mill to produce chips from pulpwood so that cooking chemicals penetrate the wood quickly, completely and uniformly during manufacturing of chemical pulp or mechanical pulp. The process from pulpwood to chips is known as … Continue reading
Optical brightening agents in paper
Optical brightening agents are additives which are used in the paper industries to enhance whitening effects of papers. These chemical compounds absorb light in the ultraviolet and violet region (usually 340-370nm) and re-emit light in the blue region (typically 420-470 … Continue reading
Paper machine headbox
The paper machine headbox is an equipment that supply very low consistency stock into the forming section uniformly. The formation and uniformity of the final paper product depends on the dispersion of the fiber and fillers. The furnish delivery system … Continue reading
Kappa number of pulp
The Kappa number of pulp is an indication of the lignin content or bleachability of pulp. We use it to estimate the required amount of bleach chemicals to achieve targeted brightness. If the kappa number value is higher then, the … Continue reading
Hydrogen peroxide bleaching
Hydrogen peroxide is a total chlorine free (TCF) bleaching agent. It is appropriate for chemical, mechanical and recycled pulp to achieve a wide range of brightness. It has both oxidizing and reducing properties which is pH depended. The chemical formula … Continue reading
