What is the dissolution of the pulp?

Dissolution of pulp is a cellulose product that is used in the production of many different products, including paper, rayon and cellophane. Most melted pulp is made of soft wood, which are forests of coniferous trees. Soft wood pulp is known for their long fibers, which are particularly contributing to the production of products such as Rayon, a synthetic fiber that can be transformed into cloth and clothes. However, some dissolved pulp are made of hard wood and the growing amount is made of plant fibers without wood. Both processes cook wood in strong chemicals to transform chips into cellulose fibers. The modified kraft process differs from the sulfit process in two ways. It uses alkaline liqueur instead of sour, which protects the machines from corrosion, and the use of sulfide sodium creates a stronger fiber. The term "kraft" comes from the German word for the strong. This process was originally developed in Germany at the end of the 19th century.

While the modified kraft process withIt has become more popular, both processes begin with removal of the bark from the protocols. The protocols are then split and added to VAT with alcohol. The mixture is heated to soften the chips, and the residual liquid can be re -used in the distribution process. After cooking, the pulp is washed to separate the residues from the fibers.

Dissolution of pulp is bleached to reduce the lignin content. Lignin is a polymer that connects wood fibers together. The lignin content is reduced by the final release of dark fibers from lighter. After the bleaching process, the pulp passes through the last screening to remove the remaining dirt. It is then dried and stored. In the modern chemical spread processes, part of the pulp is diverted by the boiler in which it is converted into fuel to supply the distribution process. The combustion process produces more energy than required, so excess electricity from the process can be sold.

dissolutionThe pulp is used among other pulp to create some products. For example, in the formation of paper, manufacturers mix mechanical pulp with chemically derived dissolved pulp to balance long fibers with short fiber durability. They may also decide not to blend their pulp to create brown paper. While the demand for the dissolution of the pulp has seen a slow decline from 70 years to the end of the 80s, when the competition of other fibers, such as polyester increased, has since stabilized and continues to play an important role in a number of industries.