Diseño de un proceso productivo de fabricación de pintura vinil acrílica para placas de yeso en la empresa Délibu S.A.S.

Abstract

The work was based on the design of a production process for the manufacture of vinyl acrylic paint in the company of Decorative Paints (DÉLIBU) S.A.S. applicable to plasterboards. The raw material was characterized and analyzing the formulation through quality requirements established by the INEN-NTE 1544-2018 Standard and other parameters such as density, opacity and performance; it was identified that the paint did not meet the parameters of opacity, performance nor the quality requirements to consider it a type 2 paint; therefore, it was considered to increase the quantity of binder and pigment by 50%; additionally it was proposed to reduce the calcium carbonate by 35 and 70% and to increase the sodium hexametaphosphate by 35 and 70%, thus having four treatments called T1, T2, T3 and T4. The production process was simulated on the FlexSim platform and the tests were carried out on a 60 Hertz variable frequency mechanical shaker. After carrying out the tests and evaluating the quality requirements, it was concluded that the best formulation that complies with the Standard is the T2 treatment; in terms of consumer requirements, a yield of 12,393m2 per liter and per coat of application was obtained, the opacity capacity was superior in relation to three commercial paints, achieving a total coating with two coats of application. At the end of the work, it was noted that it was possible to change the methodology in the finishing of the plasterboards, avoiding stuccoing completely and applying the paint directly, thus achieving a saving of 0.54 dollars per m2. To improve the capacity of the paint, it was recommended to use another type of dispersant, as the Sodium Hexametaphosphate used in the formulation did not contribute notably as a viscosity reducer.