Desenvolvimento alternativo de celulose fibra longa na fabricação de papel de baixa gramatura

Abstract

This study demonstrates that pulp plays a very important role in Brazilian industries due to the high demand in terms of internal and external consumption, as in the case of product exports, the press paper industries use a large amount of pulp long fiber in their process of With the aim of increasing the physical strength of the paper and also improving printability characteristics and improving machine quality and progress. Among the important physical resistance characteristics during the evaluation of the quality of the cellulose and the final paper manufactured are: weight, traction, tear and burst; And optical characteristics such as whiteness and whiteness. For the evaluation of the cellulose, 150 tons were used during 24 hours, disaggregating the equivalent of 54 loads for about 20 minutes per batch each batch contains 12 bales of 250 kg cellulose. Cellulose was stored in a storage tower and refined in disc refiners, to promote the refining and fibrillation of the cellulose fibers, the refined cellulose was mixed with mechanical pulp, ready-mixed refuse, recovered mass and starch, fixed products composing the Paper revenue. The objective of this work was to evaluate the physical strength characteristics of the pulp fiber in the 38 g / m² papermaking process. It was concluded that in the samples collected at the refiner's exit, the European pulp presented better results of physical resistance compared to brazil cellulose, but the results of physical resistance of the base paper did not present significant difference. It should be noted that it is necessary to evaluate the possible changes of this new cellulose can cause in the final product so that the established quality parameters remain within the stipulated standard. It is thus possible to carry out tests on a larger scale and on other types of papers.