Reel and sheet cutting at a paper mill

Authors:
M. Helena Correia;José F. Oliveira;J. Soeiro Ferreira
Affiliations:
INESC Porto, Instituto de Engenharia de Sistemas e Computadores do Porto, 4200-465 Porto, Portugal and Faculdade de Economia e Gestão, Universidade Católica Portuguesa, 4169-005 Porto, P ...;INESC Porto, Instituto de Engenharia de Sistemas e Computadores do Porto, 4200-465 Porto, Portugal and Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto, Portugal;INESC Porto, Instituto de Engenharia de Sistemas e Computadores do Porto, 4200-465 Porto, Portugal and Faculdade de Engenharia, Universidade do Porto, 4200-465 Porto, Portugal
Venue:
Computers and Operations Research
Year:
2004

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Abstract

This work describes a real-world industrial problem of production planning and cutting optimization of reels and sheets, occurring at a Portuguese paper mill. It will focus on a particular module of the global problem, which is concerned with the determination of the width combinations of the items involved in the planning process: the main goal consists in satisfying an order set of reels and sheets that must be cut from master reels. The width combination process will determine the quantity/weight of the master reels to be produced and their cutting patterns, in order to minimize waste, while satisfying production orders.A two-phase approach has been devised, naturally dependent on the technological process involved. Details of the models and solution methods are presented. Moreover some illustrative computational results are included.