A coating concept for shrink films / Stefan Schiessl in PLASTICS INSIGHTS, Vol. 113, N° 8 (2023)  

[article]  inPLASTICS INSIGHTS > Vol. 113, N° 8 (2023) . - p. 72-75 Titre : A coating concept for shrink films : New, low-cohesion coatings allow functionalization via covalent bonds Type de document : texte imprimé Auteurs : Stefan Schiessl, Auteur ; Klaus Noller, Auteur Année de publication : 2023 Article en page(s) : p. 72-75 Langues : Anglais (eng) Catégories : Emballages en matières plastiques Films rétractables Laque et laquage Polyéthylène Protection contre le rayonnement ultraviolet Revêtements Surface anti-buée Surfaces (technologie) Surfaces fonctionnelles Traitement rouleau à rouleau Index. décimale : 668.4 Plastiques, vinyles Résumé : The coating of shrink films has so far proven to be challenging because only a few shrinkable coating systems are available. A new family of coating systems that react with the substrate surface and are covalently bonded to it is now expanding the possibilities. UV-protective coatings and coatings with anti-fogging properties have already been successfully applied on a roll-to-roll scale. In theory, though, any type of functionalization can be chosen. Note de contenu : - Two disadvantages of traditional coatings: migration and degradation - Flexible film versus shrink film - New coating systems – a modified stöber synthesis - From laboratory to roll-to-roll trials - Shrink film with uv protection and anti-fogging properties - Fig. 1 : Traditional functionalization layer applied to a PE shrink film before shrinking - Fig. 2 : Schematic illustration of how the new coatings work using a UV-blocking layer for functionalizing shrink film En ligne : https://drive.google.com/file/d/1YDI2EINt_Mdaa0_xbMRYaGqpDpYmXL7J/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40560 [article]

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Nanoplatelets in a barrier lacquer / Stefan Schiessl in KUNSTSTOFFE INTERNATIONAL, Vol. 112, N° 1 (2022)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 112, N° 1 (2022) . - p. 42-45 Titre : Nanoplatelets in a barrier lacquer : Flexible and sustainable plastic packaging film thanks to nanotechnology Type de document : texte imprimé Auteurs : Stefan Schiessl, Auteur ; Esra Kucukpinar, Auteur ; Marius Jesdinszki, Auteur ; Sandro Gennen, Auteur ; Pascal Viville, Auteur ; Oliver Douhéret, Auteur Année de publication : 2022 Article en page(s) : p. 42-45 Langues : Anglais (eng) Catégories : Aliments -- Emballages Emballages en matières plastiques Enduction Laque et laquage Matériaux -- Propriétés barrières Nanoparticules Polyacétate de vinyle Polypropylène Stratifiés Index. décimale : 668.4 Plastiques, vinyles Résumé : Within the "BarriFlex" joint project, novel nano-tailored materials with improved barrier properties against gas and water vapor were developed for packaging applications. These materials form the basis of new packaging concepts. Despite intensive research, much still remains to be done as regards diversity of materials, barrier specifications and more efficient manufacturing processes for new, inexpensive, easy-to-recycle and even renewable packaging products. Note de contenu : - Nanolacquer formulation - Manufacture of mono-material laminates for food packaging - Atomic layer deposition and laminate structures for organic photovoltaics - Fig. 1 : Top: the integration of platelet-shaped, impermeable nanoparticles extends the diffusion path. Bottom: scanning electron image of an adequate PVA coating without (left) and with (right) nanoparticles - Fig. 2 : Coating of a PP film with nanolacquer containing 50 wt. % nanoparticles using the slot die technique. Right: schematic diagram of a roll-to-roll coating unit - Fig. 3 : Oxygen permeation rate for different mono-material laminates. The left bar shows a blank sample without an active barrier layer (to show the differences between the other samples, this bar has been truncated). The industrial standard is a co-extruded high barrier film, which is commercially available. The two samples on the right show the new development within the BarriFlex project and the improvement factor achieved by integrating nanoparticles - Fig. 4 : Optimization of the ALD chamber: (a) initial chamber, (b) schematic and (c) resulting substrate holder specifically made in the BarriFlex project along with (d) modified chamber cap En ligne : https://drive.google.com/file/d/1xQBAprfO_KzZreXoE7v6BFDqY_1lHDds/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37209 [article]

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