Best pigment coating for a dual-purpose coated paper / Jae Y. Shin in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 5 (09/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 5 (09/2021) . - p. 1281-1294 Titre : Best pigment coating for a dual-purpose coated paper Type de document : texte imprimé Auteurs : Jae Y. Shin, Auteur ; Paul D. Fleming, Auteur ; Hak Lae Lee, Auteur Année de publication : 2021 Article en page(s) : p. 1281-1294 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Argile Emballages Formes des particules Impression jet d'encre Latex Liants Offset (imprimerie) Papier et carton couché Perméabilité Pigments Index. décimale : 667.9 Revêtements et enduits Résumé : Dual-purpose coated paper, which enables in-line inkjet printing with web offset, can be used for both offset and inkjet prints. This product has potential to meet the ever-increasing demand for printing individualized information on commercial printing materials. In this work, commercial samples were printed in the two presses. It was deduced that low permeability correlates with large color gamut volume. The correlation would be useful to design coating formulations for good printability. Also, we examined the packing of coating layers to identify a coating formulation that provides good printing quality in both offset and inkjet printing. Many combinations of pigments were tested, and the effects of particle shape on viscosity and packing were examined. For all coating colors, pigment mixtures with a weight ratio of 3:1 gave the highest packing density. The mixture of GCC 90 and delaminated clay with a weight ratio of 3:1 was the best selection studied for dual-purpose coated paper. Among commercial paper samples, a web offset coated paper showed the best overall performance, indicating that coating formulations with minimal blistering are suitable for dual-purpose coated paper. Note de contenu : - MATERIALS AND METHODS : Commercial coated papers - Permeability (K) of commercial papers - Pigments and a binder latex - Coating formulations for dual-purpose coated paper - Field-emission scanning electron microscopy images of pigments and coated papers, and paper testing - Color reproduction - Coating color properties - The application of packing theory to paper coating - RESULTS AND DISCUSSION : Trials of precommercial dual-purpose coated papers - Effect of particle shape on viscosity - Effect of particle shape on packing - Correlation between packing volume and surface properties - Table 1 Physical properties of commercial coated papers for offset, inkjet, and dual-purpose printing - Table 2 Characteristics of coating pigments and a binder latex - Table 3 Color gamut volumes and four-color optical ink densities of commercial coated papers - Table 4 Packing volume fractions of pigment-only dispersions and pigment–latex dispersions. Calcium carbonates and clays are assumed to have an equal density of 2.7 g/m3 so that weight (λw) and volume (λv) ratios are the same in pigment-only dispersions DOI : https://doi.org/10.1007/s11998-021-00491-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00491-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36432 [article]

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High barrier sustainable co-polymerized coatings / Lokendra Pal in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 4 (12/2008)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 5, N° 4 (12/2008) . - p. 479-489 Titre : High barrier sustainable co-polymerized coatings Type de document : texte imprimé Auteurs : Lokendra Pal, Auteur ; Margaret K. Joyce, Auteur ; Paul D. Fleming, Auteur ; Stéphanie A. Cretté, Auteur ; Charles Ruffner, Auteur Année de publication : 2008 Article en page(s) : p. 479-489 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Argile Cartonnages Copolymère styrène butadiène styrène Gaz Matériaux -- Propriétés barrières Perméabilité Polyacryliques Polymérisation Revêtements protecteurs Vapeur d'eau Index. décimale : 667.9 Revêtements et enduits Résumé : The goal of this project was to determine the most promising co-polymerized (COP) coating for paperboard for protection against gas and water vapor transmission. The driving force for this was to create a coating that will significantly slow the permeation of water and water vapor through the paperboard, while retaining its mechanical properties. This was accomplished by creating high barrier co-polymerized coatings. This study focuses on the use of modified high shape factor engineered (HSFE) clays. In this study, acrylic co-monomers have been polymerized in the presence of three different, finely dispersed HSFE clays, to prepare the co-polymerized coatings. The wet coating structure was studied using Brookfield and Hercules Hi-Shear viscometers, water retention, and dispersion stability. The dry coating structure was studied using WYKO White Light Interferometry and burn out tests. The cylindrical laboratory coater (CLC)-coated samples were then tested for gas and water vapor permeability. Additionally, the optical and surface properties were determined. The CLC-coated board samples showed almost zero gas permeability and a significant reduction in water vapor transmission rate (water vapor permeability). The water vapor permeability was reduced up to 90% reflecting a one order of magnitude decrease in comparison to a commercially coated sample. The co-polymerized coating with high shape factor and thinner platelet clay displayed the lowest water vapor permeability and the best optical and surface properties, thereby making it the most promising barrier coating for solid bleached sulfate paperboard. DOI : 10.1007/s11998-008-9101-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9101-0.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3475 [article]

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Phase-change inks / Alexandra Pekarovicova in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 75, N° 936 (01/2003)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 75, N° 936 (01/2003) . - p. 65-72 Titre : Phase-change inks Type de document : texte imprimé Auteurs : Alexandra Pekarovicova, Auteur ; Hrishikesh Bhide, Auteur ; Paul D. Fleming ; Jan Pekarovic Année de publication : 2003 Article en page(s) : p. 65-72 Note générale : Bibliogr. Langues : Américain (ame) Tags : Formulation  Encre  Impression  jet  encre  en  creux  Hot  melt  Changement  phase  Matériau  PCM Index. décimale : 667.9 Revêtements et enduits Résumé : Phase-change, or hot melt, inks are solid at ambient temperature and liquid at the moment of printing. Such inks contain no volatile solvent to be trapped in ink film or to produce Volatile Organic Compounds (VOC). The phase-change inks found application in non-impact printing technology by either thermal transfer or solid ink digital printing. The environmental and health problems caused by inks containing volatile organic compounds, such as toluene, call for new solutions in the rotogravure printing industry. Because of their low VOC content, phase-change inks might be a reasonable solution for gravure printing. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5613 [article]

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The effects of the interaction of pigment coating with ink on the offset print quality / Sinan Sonmez in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 6 (11/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 6 (11/2022) . - p. 1851-1858 Titre : The effects of the interaction of pigment coating with ink on the offset print quality Type de document : texte imprimé Auteurs : Sinan Sonmez, Auteur ; Roland Gong, Auteur ; Paul D. Fleming, Auteur ; Qingliu Wu, Auteur Année de publication : 2022 Article en page(s) : p. 1851-1858 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Encre Enrobage (technologie) Formulation (Génie chimique) Huile de soja Offset (imprimerie) Papier et carton couché Revêtements organiques Rugosité Index. décimale : 667.9 Revêtements et enduits Résumé : The study was carried out in order to determine the effect of coating formulations on printing quality. For this purpose, five different coating formulations were created in which kaolin and precipitated calcium carbonate pigments (PCC) were mixed in different proportions. Coating formulations were applied in two layers on a base cardboard. Calendering of the coated base cartons was carried out using a laboratory calender. The prints were made on the calendered cardboards using mineral oil-based, vegetable (soybean) oil-based, and UV inks in a laboratory type offset printing machine. As a result of the study, it was determined that the coating of the base cardboard surface affects the optical and physical properties of the cardboard, the surface properties change according to the amount of pigment used in the formulations, and this change affects the printing quality. In the study, the best printing results in terms of printing quality were obtained with the use of UV ink. Mineral oil-based and vegetable (soybean) oil-based ink were compared in terms of printing quality, and since the values obtained are close to each other, it can be said that vegetable oil-based inks can be preferred instead of mineral oil-based ink, and more environmentally friendly sustainable productions can be realized. It has always provided better results in terms of surface smoothness and printability in coated formulations where the kaolin ratio is increased. Note de contenu : - MATERIALS AND METHODS : Base cardboard characteristics - Coating formulations and application - Performing the test printings - RESULTS AND DISCUSSION : The surface roughness properties of unprinted coated cardboards - Print density properties - Print lightness properties - Print color properties - Print chroma properties - Delta gloss properties - Table 1 : Base cardboard layers and their weights - Table 2 : The properties of the pigment - Table 3 : The properties of the binder (latex) - Table 4 : The coating formulations DOI : https://doi.org/10.1007/s11998-022-00656-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00656-4.pdf?pdf=button Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38502 [article]

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