Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/79272
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dc.contributorHong Kong Community College-
dc.contributorInstitute of Textiles and Clothing-
dc.creatorWu, L-
dc.creatorYick, KL-
dc.creatorNg, S-
dc.creatorSun, Y-
dc.date.accessioned2018-11-05T01:45:17Z-
dc.date.available2018-11-05T01:45:17Z-
dc.identifier.issn2073-4360en_US
dc.identifier.urihttp://hdl.handle.net/10397/79272-
dc.language.isoenen_US
dc.publisherMolecular Diversity Preservation International (MDPI)en_US
dc.rights© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).en_US
dc.rightsThe following publication Wu, L., Yick, K. L., Ng, S., & Sun, Y. (2018). Modeling of Flexible Polyurethane Foam Shrinkage for Bra Cup Moulding Process Control. Polymers, 10(5), 472, 1-13 is available at https://dx.doi.org/10.3390/polym10050472en_US
dc.subjectPolyurethane foamsen_US
dc.subjectBra cup mouldingen_US
dc.subjectProcess controlen_US
dc.subjectThermal conductivityen_US
dc.subjectShrinkageen_US
dc.titleModeling of flexible polyurethane foam shrinkage for bra cup moulding process controlen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage1en_US
dc.identifier.epage13en_US
dc.identifier.volume10en_US
dc.identifier.issue5en_US
dc.identifier.doi10.3390/polym10050472en_US
dcterms.abstractNowadays, moulding technology has become a remarkable manufacturing process in the intimate apparel industry. Polyurethane (PU) foam sheets are used to mould three-dimensional (3D) seamless bra cups of various softness and shapes, which eliminate bulky seams and reduce production costs. However, it has been challenging to accurately and effectively control the moulding process and bra cup thickness. In this study, the theoretical mechanism of heat transfer and the thermal conductivity of PU foams are first examined. Experimental studies are carried out to investigate the changes in foam materials at various moulding conditions (viz., temperatures, and lengths of dwell time) in terms of surface morphology and thickness by using electron and optical microscopy. Based on the theoretical and experimental investigations of the thermal conductivity of the foam materials, empirical equations of shrinkage ratio and thermal conduction of foam materials were established. A regression model to predict flexible PU foam shrinkage during the bra cup moulding process was formulated by using the Levenberg-Marquardt method of nonlinear least squares algorithm and verified for accuracy. This study therefore provides an effective approach that optimizes control of the bra cup moulding process and assures the ultimate quality and thickness of moulded foam cups.-
dcterms.accessRightsopen access-
dcterms.bibliographicCitationPolymers, May 2018, v. 10, no. 5, 472, p. 1-13-
dcterms.isPartOfPolymers-
dcterms.issued2018-
dc.identifier.isiWOS:000435199300010-
dc.identifier.scopus2-s2.0-85046256686-
dc.identifier.artn472en_US
dc.description.validate201810 bcrcen_US
dc.description.oaVersion of Record-
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublished-
dc.description.oaCategoryCCen_US
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