O Problema da Minimização de Troca de Gramaturas e Rolos Corrugadores em uma Indústria de Embalagens de Papelão Ondulado

ABSTRACT

In this paper we address a real problem identified in the production process of corrugated packaging industries. The Production Planning and Control sector issues bulletins that bring the characteristics related to the sheets that will be produced. The production of these sheets is done in the corrugator, where reels are installed, according to the characteristics of the bulletins. The problem arises from the need to minimize the switches of weights and corrugator rolls during the sheets production process, since each bulletin brings the specific weight of the layers (usually 3 or 5) of the sheet, in addition to the type of wave used. The sequencing of bulletins impacts the amount of weight and corrugator rolls switches. We interpreted this problem as a Minimization of Tool Switches Problem and we present four mathematical models for the case under study. Some computational results are presented comparing the results obtained by the proposed mathematical models and by a factory of the sector, and that it is possible to reduce up to 37% the number of switches of weights.

Keywords:
mixed-integer programming; minimization of tool switches; corrugated packaging industries