{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,21]],"date-time":"2025-10-21T15:50:26Z","timestamp":1761061826059,"version":"build-2065373602"},"reference-count":45,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2023,5,7]],"date-time":"2023-05-07T00:00:00Z","timestamp":1683417600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"POR Norte","award":["PRT\/BD\/152192\/2021","UID-P\/05256\/2020","2013\/07375-0","2019\/07665-4"],"award-info":[{"award-number":["PRT\/BD\/152192\/2021","UID-P\/05256\/2020","2013\/07375-0","2019\/07665-4"]}]},{"DOI":"10.13039\/501100001871","name":"FEDER funds through the COMPETE 2020 Program and National Funds through FCT (Portuguese Foundation for Science and Technology)","doi-asserted-by":"publisher","award":["PRT\/BD\/152192\/2021","UID-P\/05256\/2020","2013\/07375-0","2019\/07665-4"],"award-info":[{"award-number":["PRT\/BD\/152192\/2021","UID-P\/05256\/2020","2013\/07375-0","2019\/07665-4"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001807","name":"S\u00e3o Paulo Research Foundation","doi-asserted-by":"publisher","award":["PRT\/BD\/152192\/2021","UID-P\/05256\/2020","2013\/07375-0","2019\/07665-4"],"award-info":[{"award-number":["PRT\/BD\/152192\/2021","UID-P\/05256\/2020","2013\/07375-0","2019\/07665-4"]}],"id":[{"id":"10.13039\/501100001807","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>Polymer single-screw extrusion is a major industrial processing technique used to obtain plastic products. To assure high outputs, tight dimensional tolerances, and excellent product performance, extruder screws may show different design characteristics. Barrier screws, which contain a second flight in the compression zone, have become quite popular as they promote and stabilize polymer melting. Therefore, it is important to design efficient extruder screws and decide whether a conventional screw will perform the job efficiently, or a barrier screw should be considered instead. This work uses multi-objective evolutionary algorithms to design conventional and barrier screws (Maillefer screws will be studied) with optimized geometry. The processing of two polymers, low-density polyethylene and polypropylene, is analyzed. A methodology based on the use of artificial intelligence (AI) techniques, namely, data mining, decision making, and evolutionary algorithms, is presented and utilized to obtain results with practical significance, based on relevant performance measures (objectives) used in the optimization. For the various case studies selected, Maillefer screws were generally advantageous for processing LDPE, while for PP, the use of both types of screws would be feasible.<\/jats:p>","DOI":"10.3390\/polym15092212","type":"journal-article","created":{"date-parts":[[2023,5,8]],"date-time":"2023-05-08T02:03:31Z","timestamp":1683511411000},"page":"2212","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Evolutionary Multi-Objective Optimization of Extrusion Barrier Screws: Data Mining and Decision Making"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7777-7625","authenticated-orcid":false,"given":"Ant\u00f3nio","family":"Gaspar-Cunha","sequence":"first","affiliation":[{"name":"Institute of Polymers and Composites, University of Minho, 4710-057 Braga, Portugal"}]},{"given":"Paulo","family":"Costa","sequence":"additional","affiliation":[{"name":"Institute of Polymers and Composites, University of Minho, 4710-057 Braga, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1810-1742","authenticated-orcid":false,"given":"Alexandre","family":"Delbem","sequence":"additional","affiliation":[{"name":"Institute of Mathematics and Computer Science, University of S\u00e3o Paulo, S\u00e3o Paulo 05508-060, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6172-2689","authenticated-orcid":false,"given":"Francisco","family":"Monaco","sequence":"additional","affiliation":[{"name":"Institute of Mathematics and Computer Science, University of S\u00e3o Paulo, S\u00e3o Paulo 05508-060, Brazil"}]},{"given":"Maria Jos\u00e9","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Portuguese Footwear Research and Technology Centre, 3700-121 S\u00e3o Jo\u00e3o da Madeira, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0790-5801","authenticated-orcid":false,"given":"Jos\u00e9","family":"Covas","sequence":"additional","affiliation":[{"name":"Institute of Polymers and Composites, University of Minho, 4710-057 Braga, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1245","DOI":"10.1002\/pen.760261804","article-title":"Extruder screws with barrier sections","volume":"26","author":"Rauwendaal","year":"1986","journal-title":"Polym. 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