This allows a well bigger staple fibre combination of what in the fabric conspired, bringing new mixtures of staple fibres and providing innovations in the development of fabrics (called weaveeed intelligent). 2.2BENEFICIAMENTO TEXTILE This phase, that comes after the weaving soon, basically is divided in preparation for the tingimento, tingimento properly said and finishing. The txteis articles must carefully be prepared before initiating the tingimento. The real necessity of these processes has as objective to improve the aspect, the tintrea capacity, as well as conditions for a posterior noble finishing to the fabric. This preparation or daily pay-treatment consists of eliminating all the impurities of the fabric, impurities as the waxes, the natural pectinas, the lubricative oils, paraffins, gums.
These impurities can be natural or artificial. The artificial impurities are added to wires during the weaving process. To assist in withdrawal of these impurities we can purges cite it, the alvejamento, escovagem, desengomagem, chamuscamento, in agreement mercerizao orientaes and concepts contained in the manual of would tinturaria of the industries Brinel S/A? download in 12-09-2010. It purges is the wet primary cleanness in which is submitted the fabric having aimed at to eliminate the natural impurities, oils of encimagem and gum gifts in fabrics, the method used for cleanness of the fiber demands the presence of at least a tensoativo agent of proven efficiency capable to umectar, to exert detergency and to emulsificar. A alkali is also used (Sodium Carbonate) to saponificar the substances greases that are insoluble. The formularization used in purges depends on the fiber that will be worked.
Alvejamento is made generally by oxidativa action using Clorito de Sdio (NClO2), Hipoclorito de Sdio (NOCl), Peroxide of Hidrognio (H2O2) or for redutiva action, using Ditionito de Sdio (Hidrossulfito de Sdio? In 2S2O4). The Clorito of Sodium presents good alvejantes properties since that adequately applied. Today little it is used had its toxicity and corrosive reactivity in the equipment, exactly of stainless steel.