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http://hdl.handle.net/1942/28295
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DC Field | Value | Language |
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dc.contributor.author | BAMPS, Bram | - |
dc.contributor.author | D'huys, Karlien | - |
dc.contributor.author | De Ketelaere, Bart | - |
dc.contributor.author | ADONS, Dimitri | - |
dc.contributor.author | PEETERS, Roos | - |
dc.date.accessioned | 2019-05-28T09:23:40Z | - |
dc.date.available | 2019-05-28T09:23:40Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | 28th IAPRI symposium on packaging, Lausanne, May 9-12, 2017 | - |
dc.identifier.uri | http://hdl.handle.net/1942/28295 | - |
dc.description.abstract | Recent studies have shown advantages of ultrasonic sealing over heat conductive sealing, namely sealing through contamination, decreased energy consumption, no need for thick peel layers. Up to now there is no efficient systematic methodology to determine the optimal settings for the ultrasonic sealing of flexible films. Besides that, almost no literature is available about the specific permeation of the seal area in a package. In this study, seal strength, compaction and/or energy consumption are investigated as determining parameters in optimizing the ultrasonic sealing (USS) performance of flexible packaging films. These parameters are used to evaluate the ultrasonic seal performance of polyolefin monolayer and multilayer materials – 60 μm monolayer polyethylene (PE) and polypropylene (PP) polyolefin films, laminated films of 24 μm polyethylene terephthalate (PET) or oriented polyamide (OPA) with 40 μm PE seal layer. These materials are sealed with a 35 kHz ultrasonic sealer at 15 different settings of force, amplitude and time to calculate the optimum settings and to evaluate the ultrasonic seal performance. Besides that, the oxygen transmission rate (OTR) of ultrasonically sealed commercial pouches and flat films with and without the presence of a high barrier layer, ethylene vinyl alcohol (EVOH) or aluminum (Alu), in PET laminates with a PE sealing layer, is evaluated. This is measured with a Mocon OX-TRAN® device. The optimization method is validated and ready for implementation. Metallocene linear low density polyethylene with C6 branches (mLLDPE-C6) and random copolymer polypropylene (raco PP) are selected as ultrasonic best performing polyolefin monolayers because of respectively mainly a lower energy consumption and a broader seal window compared to other tested films. PET was selected as the best performing laminate for ultrasonic sealing because of the lower energy consumption compared to OPA laminates. Ultrasonic seal strengths of OPA and PET laminates were similar. Strong ultrasonic seals have no impact on the OTR. This is illustrated by the OTR-results of high barrier PET/Alu/PE pouches at normal and extreme ultrasonic settings, respectively 0.66±1.56x104 and 0.48±2.9x10-4 cc/package.day. | - |
dc.description.sponsorship | This research is done within the IWT-TETRA project “ULTRASEAL: The potential of ultrasonic sealing in packages” funded by VLAIO. | - |
dc.language.iso | en | - |
dc.subject.other | Seal permeation; Oxygen transmission rate; Ultrasonic sealing; flexible packaging; polyolefin seal layer; mono- and multilayer packaging material | - |
dc.title | Evaluation of the Ultrasonic Sealing Performance of Flexible Films with Polyolefin Seal Layer | - |
dc.type | Conference Material | - |
local.bibliographicCitation.conferencedate | May 9-12, 2017 | - |
local.bibliographicCitation.conferencename | 28th IAPRI symposium on packaging | - |
local.bibliographicCitation.conferenceplace | Lausanne | - |
local.bibliographicCitation.jcat | C2 | - |
dc.relation.references | 1. R. Coles, D. McDowell and M.J. Kirwan, 2003, Food Packaging Technology, Blackwell publishing ltd, United Kingdom pp. 250. 2. K. Hishinuma, 2009, DEStech Publications inc, USA, Heat sealing technology and engineering for packaging: Principles and applications, pp. 30-42. 3. H.W. Theller, 1989, “Heatsealability of flexible web materials in hot-bar sealing applications”, Journal of plastic film and sheeting, vol. 5, pp. 66-93. 4. F.C. Stehling and P. Meak, 1994, “Heat sealing of semicrystalline polymer films. II. Effect of melting distribution on heat-sealing behavior of polyolefins”, Journal of applied polymer science, vol. 51, no. 1, pp. 105-119. 5. S. Bach, K. Thürling and J-P. Majschak J.P, 2012, “Ultrasonic Sealing of Flexible Packaging Films – Principle and Characteristics of an Alternative Sealing Method”, Packaging technology and science vol. 25, no. 4, pp. 233-248. 6. M. Nase, S. Bach, A. Zankel, J.P. Majschak and W. Grellmann, 2013, “Ultrasonic Sealing Versus Heat Conductive Sealing of Polyethylene/ Polybutene-1 Peel Films”. Journal of applied polymer science, vol. 130, no. 1, pp. 383-393. 7. DIN 55529: Determining the sealed-seam strength of sealings made of flexible packaging material, 2012. 8. ASTM D 1876: Standard Test Method for Peel Resistance of Adhesives (T-Peel Test), 2001. 9. ASTM F1927: Standard test method for determination of oxygen gas transmission rate, permeability and permeance at controlled relative humidity through barrier materials using a coulometric detector, 1998. 10. ASTM F1307: Standard test method for oxygen transmission rate through dry packages using a coulometric sensor, 1990. 11. ASTM F88: Standard test method for seal strength of flexible barrier materials, 2005. 12. J.D.Sierra, 2000, “Effect of metallocene polyethylene on heat sealing properties of low density polyethylene blends”, Journal of plastic film and sheeting, vol. 16, no. 1, pp. 33-42. 13. I. Reinas, J. Oliveira, J. Pereira, P. Mahajan, F. Poças, 2016, “A quantitative approach to assess the contribution of seals to the permeability of water vapour and oxygen in thermosealed packages”, Food packaging and shelf life, vol. 7, no. 1, pp. 34-40. | - |
local.type.refereed | Non-Refereed | - |
local.type.specified | Presentation | - |
item.fulltext | With Fulltext | - |
item.accessRights | Open Access | - |
item.fullcitation | BAMPS, Bram; D'huys, Karlien; De Ketelaere, Bart; ADONS, Dimitri & PEETERS, Roos (2017) Evaluation of the Ultrasonic Sealing Performance of Flexible Films with Polyolefin Seal Layer. In: 28th IAPRI symposium on packaging, Lausanne, May 9-12, 2017. | - |
item.contributor | BAMPS, Bram | - |
item.contributor | D'huys, Karlien | - |
item.contributor | De Ketelaere, Bart | - |
item.contributor | ADONS, Dimitri | - |
item.contributor | PEETERS, Roos | - |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
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20170510_UHasselt - Seal_final.pdf | Conference material | 1.48 MB | Adobe PDF | View/Open |
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