Modeling the penetration of polymer into paper during extrusion coating / Mubarak Khlewee in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 1 (01/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 1 (01/2022) . - p. 25-34 Titre : Modeling the penetration of polymer into paper during extrusion coating Type de document : texte imprimé Auteurs : Mubarak Khlewee, Auteur ; Mohammed Al-Gharrawi, Auteur ; Doug Bousfield, Auteur Année de publication : 2022 Article en page(s) : p. 25-34 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion Enduction Extrusion (mécanique) Fibres cellulosiques Modèles mathématiques Nanofibres Papier -- Revêtements Papier et carton couché Pénétration (physique) Polyéthylène Revêtements organiques Thermocinétique Index. décimale : 667.9 Revêtements et enduits Résumé : During the extrusion coating of paper or paperboard, a molten film of polymer is pressed against a paper surface to generate waterproof packaging materials. Hot-melt glues are also applied to various porous materials and paperboard to generate packaging. In both cases, the penetration of the polymer into the pore space influences the product performance and the ability of the product to be recycled at the end of life. While there is much experimental work discussing various parameters in these operations, little theoretical work has been reported. Here, a simple model based on Darcy’s law is proposed to predict the penetration of polyethylene (PE) into paper and paper that has been coated with cellulose nanofibers (CNF). Another model, based on the flow of a polymer into a pore that includes dynamic heat transfer is developed, where the viscosity is a function of temperature. Experiments were conducted where a PE film is pressed against samples and the amount of fiber recovery is characterized. The model predictions are compared to experimental results. Good agreement for different paper types, pressing times, and temperatures is obtained after a calibration factor is used. DOI : https://doi.org/10.1007/s11998-021-00487-9 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00487-9.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37142 [article]

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