Abstract

SILVA, Cristóvão  and  FERREIRA, Luís M.. MICROPLANO: A decision support system for production planning in the plastic industry. Inv. Op. [online]. 2003, vol.23, n.2, pp.131-144. ISSN 0874-5161.

In this paper we introduce a production-scheduling problem found in a Portuguese small medium enterprise (SME) that produces small plastic parts for the electric/electronic industry. The parts are obtained by plastic injection onto a mould, in a shop composed by 32 parallel machines. The characteristics of the production system are presented and a two-step algorithm, choose to schedule all the jobs, is referred. This algorithm, based in two known heuristics, has been incorporated in a decision support system (Microplano), which also contains a database management module and a user interface module. Microplano has been implemented in the factory and is being in use on a regular basis.

Keywords : Production planning; Lot-size scheduling; Decision support systems; Plastic injection industry.

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