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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/13167

Title: Non-contact laser sealing of thin polyester food packaging films
Authors: Brown, Neil
Kerr, David
Parkin, Robert M.
Jackson, Michael R.
Shi, Fangmin
Keywords: Welding
Issue Date: 2012
Publisher: © Elsevier
Citation: BROWN, N. ... et al, 2012. Non-contact laser sealing of thin polyester food packaging films. Optics and Lasers in Engineering, 50 (10), pp.1466-1473.
Abstract: We describe a laser-based, non-contact sealing technique for thin, polyester-based lidding films, used in PET containers for food packaging. The method uses a beam-steered laser to seal the container, thereby enabling virtually instant changeover from one product line to another. Unlike conventional sealing PET film processes, no bespoke tooling is required to hold the package components in close proximity and under pressure whilst the seal is formed. This greatly reduces sealing machine tooling costs and potential downtime at product changeovers. Results are presented that show that the process is able to produce seals of higher strength using thin (26μm) polyester film than those from the conventional thermal/mechanical process. This provides a potential for increased production flexibility, reduction in product wastage, and for reducing the cost and embodied energy in construction of a less massive sealing machine.
Description: This is the author’s version of a work that was accepted for publication in the journal, Optics and Lasers in Engineering. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published at: http://dx.doi.org/10.1016/j.optlaseng.2012.04.001
Version: Accepted for publication
DOI: 10.1016/j.optlaseng.2012.04.001
URI: https://dspace.lboro.ac.uk/2134/13167
Publisher Link: http://dx.doi.org/10.1016/j.optlaseng.2012.04.001
ISSN: 0143-8166
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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