Modern pulp and paper manufacturing draws on an extraordinary range of scientific disciplines, from plant genetics and biochemistry to fluid mechanics and process engineering. Looking at a massive, high-speed paper machine, it is easy to assume that the trace chemicals added to the pulp slurry play a minor role in the overall technology. On the … Read more
In the vast multidisciplinary landscape of pulp and paper manufacturing—spanning plant genetics, fluid mechanics, and heavy process engineering—the chemical reactions occurring in the aqueous furnish suspension can easily be overlooked. However, treating paper chemistry as a minor variable is a costly operational mistake. Effective wet-end chemistry control is the decisive factor between a high-efficiency paper … Read more
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 powder. Dispersing agent is water soluble and has high viscosity in aqueous solution. It is … Read more
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 nm). It gives a fluorescent effect that masks the inherent yellowness of the fiber and … Read more