Properly foamed with IML / Christian Hopmann in KUNSTSTOFFE INTERNATIONAL, Vol. 111, N° 3 (2021)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 111, N° 3 (2021) . - p. 36-39 Titre : Properly foamed with IML : How does the addition of blowing agent affect adhesion and molded part properties ? Type de document : texte imprimé Auteurs : Christian Hopmann, Auteur ; Yuxiao Zhang, Auteur ; Jan Wolters, Auteur Année de publication : 2021 Article en page(s) : p. 36-39 Langues : Anglais (eng) Catégories : Adhésion Emballages en matières plastiques Etiquetage dans le moule Mousses plastiques -- Moulage par injection Polypropylène Index. décimale : 668.4 Plastiques, vinyles Résumé : Thermoplastic foam injection molding enables lower melt viscosity due to the addition of blowing agent, which is also attractive for the production of thin-walled packaging. Since injection molded packaging is often decorated through in-mold-labeling, it is important to understand how the blowing agent affects adhesion between the film and the molded part to avoid bubble formation at the interface. Note de contenu : - Lower injection pressure due to the addition of blowing agent and IML - Influence on Film Adhesion and Optical Appearance - Influence of blowing agent on molded part warpage - Foam injection molding in thin-wall applications - Figure : Selecting the right IML film is critical for visually appealing molded parts - Fig. 1 : Sheet geometry with flow aids was used for the tests - Fig. 2 : The injection pressure is reduced by the blowing agent - Fig. 3 : Influence of different IML films on the injection pressure with and without blowing agent for PHC27 and a 0.5 mm thick sheet - Fig. 4 : Warpage X is defined as the distance between the highest and the lowest point in the side view of the sheet - Fig. 5 : Influence of IML film on the molding warpage of a 0.5 mm thick sheet of PHC27 - Table 1 : The following polypropylene grades were processed in the trials using the MuCell process - Table 2 : IML films with different optical and haptic properties and thicknesses were selected for the back-molding tests En ligne : https://drive.google.com/file/d/15O_fCiCMKIMEp_TxvL9vwVA2LEDB-Q9m/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35538 [article]

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