Effect of coating pigment type on paper printability with water-based inks / Arif Ozcan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 4 (07/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 4 (07/2022) . - p. 1149-1157 Titre : Effect of coating pigment type on paper printability with water-based inks Type de document : texte imprimé Auteurs : Arif Ozcan, Auteur ; Sinan Sonmez, Auteur ; Dogan Tutak, Auteur Année de publication : 2022 Article en page(s) : p. 1149-1157 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Carbonate de calcium Le carbonate de calcium (CaCO3) est composé d'un ion carbonate (CO32-) et d'un ion calcium (Ca2+), sa masse molaire est de 100,1 g/mole. C'est le composant principal du calcaire et de la craie, mais également du marbre. C'est aussi le principal constituant des coquilles d'animaux marins, du corail et des escargots. Encre d'imprimerie Encre en phase aqueuse Formulation (Génie chimique) Kaolin Liants Papier et carton couché Pigments Pigments inorganiques -- Analyse Revêtements en papier Sérigraphie Index. décimale : 667.9 Revêtements et enduits Résumé : Nowadays, the need for papers and cardboards with improved surface properties is increasing with the development of the packaging industry. The improvements made are not only limited to the paper and paper surface, but also environmentalist approaches are exhibited in printing ink. For this purpose, the use of water-based ink tends to become widespread, especially in food packaging. In this study, five different paper coating formulations were prepared using different proportions of precipitated calcium carbonate (PCC) and kaolin pigments. Latex (Acronal S360D) was used as a binder. All prepared coating mixes were applied onto the base paper surface. All coated papers were also subjected to the calendering process. In addition, three different dyestuffs (14, 17, 20%) concentrations of water-based printing inks were prepared. Prints were made by the silk screen printing technique on the calendered-coated papers. The optical and physical properties (roughness, air permeance, paper gloss and printing gloss, contact angle and surface energy) of all papers were measured according to the standards. Paper gloss, print gloss, ΔE00 color differences, contact angles and surface energy measurements were made, and the effects of dye ratio on printing and gloss in water-based inks and coating type suitable for printability were investigated. As a result, papers can be coated and even calendered to achieve better paper surface properties and printability. In the case of printing with water-based inks, better printability properties are obtained by choosing PCC pigmented coated papers. Note de contenu : - Materials - Paper coating formulations - Optical and physical properties of papers - Preparing water-based ink - Printing conditions - Color properties - Table 1 Paper coating formulations - Table 2 The characteristics of the mineral pigments - Table 3 The characteristics of the binder (Acronal S360D) - Table 4 Formulations of water-based printing inks - Table 5 : SEM-EDAX chemical content results of paper samples coated with formulations of different pigment composition - Table 6 : Total surface energy and contact angle values according to ASTM D5946 method - Table 7 : The difference between the color of the papers printed according to the CIE ΔE 2000 euclidean color-difference formula DOI : https://doi.org/10.1007/s11998-021-00593-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00593-8.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38043 [article]

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The effect of paper surface-coating pigments and binders on colour gamut and printing parameters / Arif Ozcan in COLORATION TECHNOLOGY, Vol. 137, N° 5 (10/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 5 (10/2021) . - p. 445-455 Titre : The effect of paper surface-coating pigments and binders on colour gamut and printing parameters Type de document : texte imprimé Auteurs : Arif Ozcan, Auteur ; Mustafa Tutak, Auteur Année de publication : 2021 Article en page(s) : p. 445-455 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alcool polyvinylique Argile Calandrage Le calandrage est une opération qui consiste à faire passer un matériau entre deux cylindres pour le lisser ou le lustrer, ou pour produire un film ou une feuille. Des matériaux de plus faible épaisseur (produits semi-finis, feuilles, plaques, films, crêpes) peuvent être obtenus par calandrage d'un système thermoplastique ou élastomère entre des cylindres éventuellement chauffants. Une calandreuse comporte au moins deux rouleaux contrarotatifs, dont l'écartement est ajustable. Plusieurs passages entre les cylindres peuvent être réalisés. Cette opération est par exemple utilisée pour fabriquer des revêtements de sols et de murs, des nappes, de l'ameublement, de la maroquinerie et des articles gonflables. Pour les pâtes de faible viscosité, une calandreuse peut servir de mélangeur en formulation. En papeterie, l'opération de calandrage permet d'obtenir différents états de surface de la feuille de papier, notamment pour les papiers couchés. Selon le degré de calandrage (pression, température de chauffe), le papier sera plus ou moins lissé et brillant. Calcaire Caoutchouc styrène-butadiène Colorimétrie Formulation (Génie chimique) Impression numérique Latex Liants Papier -- Revêtements Papier et carton couché Pigments inorganiques Revêtements organiques Zéolites Index. décimale : 686.23 Impression Résumé : One of the most important factors affecting the printing quality of printing processes is the surface structure of the printing material. The surface structure of the paper formed by fibres can be modified and smoothed out using coatings that make it more suitable for printing. In this study, three different types of coating pigments were prepared and applied onto an 80 g/m2 base paper surface. Styrene butadiene latex and polyvinyl alcohol were used as binders, and three different types of pigments, precipitated calcium carbonate, clay and zeolite, were used as pigments in the prepared coatings. The physical and optical properties of all calendered and non-calendered papers were measured and compared. All the prints were produced with an ink-jet digital printing machine upon the coated and calendered papers for recording the printability parameters. The ΔE00 differences between colours, tone values, colour gamuts and colour gamut volumes were measured from the surfaces of the printed papers. The results showed that the coating type had a better effect on print quality, and that the printability properties of coated papers and even calendered papers were very good. Note de contenu : - Table 1 : Physical and optical properties of base paper - Table 2 : Coating formulation - Table 3 : Physical and optical properties of coated and calendered papers with precipitated calcium carbonate (PCC) - Table 4 : Physical and optical properties of coated and calendered papers with clay - Table 5 : Physical and optical properties of coated and calendered papers with zeolite - Table 6 : Comparison of the ΔE00 colour difference values for base paper and coated papers according to ISO 12647-2, paper type 4 - Table 7 : Colour gamut volumes obtained using ColorThink Pro v.3 DOI : https://doi.org/10.1111/cote.12540 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12540 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36488 [article]

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