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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Effects on print quality of varying acrylic binder types in water-based flexographic ink formulations / Sinan Sonmez in COLORATION TECHNOLOGY, Vol. 139, N° 3 (06/2023)  

[article]  inCOLORATION TECHNOLOGY > Vol. 139, N° 3 (06/2023) . - p. 330-337 Titre : Effects on print quality of varying acrylic binder types in water-based flexographic ink formulations Type de document : texte imprimé Auteurs : Sinan Sonmez, Auteur ; Dania Alsaid, Auteur ; Alexandra Pekarovicova, Auteur ; Paul D. Fleming III, Auteur ; Matthew T. Stoops, Auteur Année de publication : 2023 Article en page(s) : p. 330-337 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cyan Le cyan est, par définition, la couleur primaire complémentaire du rouge, dans la synthèse soustractive des couleurs utilisée en photographie argentique en couleurs et en imprimerie. Encre en phase aqueuse Encre flexographique Formulation (Génie chimique) Liants en phase aqueuse Polyacryliques Index. décimale : 667.3 Teinture et impression des tissus Résumé : The ink industry is one of the world's largest markets due to the increasing demand for printing inks for the packaging industry. Flexography printing is a well-known promising technology for large-area printing due to its high printing speed and roll-to-roll capability to print economically on a variety of surfaces and is used in nearly in all areas of packaging printing. Water-based inks are considered non-toxic, odourless, and more environmentally friendly options compared to solvent-based inks. Therefore, in this article, the goal was to develop new water-based ink formulation with different acrylic binders for flexographic printing on commercial solid bleached sulphate (SBS) board. Five inks were formulated with four different acrylic binders and compared to a commercially available ink to study their performance. The developed inks were investigated with regard to their print qualities and print characteristics. It was found that the binder type influenced some print quality while the effect was not significant for others. Using flexography printed cyan inks, the ink formulated with the highest molecular weight had the lowest print density and the largest tonal value increase (TVI) observed between 40 and 60 tone values. The same ink had the largest mottle values and variation in topography. For values of print contrast and delta gloss at 75°, although differences were observed between average values, data had inconclusive variation and spread around averages, where no conclusive trends or effects of acrylic binder type on these response factors were observed. Print chroma and dot roundness results were equally close for all printed samples. Note de contenu : - Ink formulation - Printing conditions - Table 1 : The optical and physical properties of solid bleached sulphate (SBS) board - Table 2 : The physical and chemical properties of pigment dispersion - Table 3 : The chemical properties of acrylic resins used in ink formulations - Table 4 : A standard water-based flexographic ink formulation - Table 5 : The CIE L*a*b* colour values of printed test samples - Table 6 : Print topography and mottle properties of printed test samples - Table 7 : Dot measurements of 15% screen dots of printed test samples - Table 8 : Print rub resistance properties of printed test samples DOI : https://doi.org/10.1111/cote.12650 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12650 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39542 [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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Usability of cellulose-based binder in water-based flexographic ink / Sinan Sonmez in COLORATION TECHNOLOGY, Vol. 139, N° 3 (06/2023)  

[article]  inCOLORATION TECHNOLOGY > Vol. 139, N° 3 (06/2023) . - p. 239-247 Titre : Usability of cellulose-based binder in water-based flexographic ink Type de document : texte imprimé Auteurs : Sinan Sonmez, Auteur ; Abdus Salam, Auteur ; Paul D. Fleming III, Auteur ; Alexandra Pekarovicova, Auteur ; Qingliu Wu, Auteur Année de publication : 2023 Article en page(s) : p. 239-247 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules. Encre flexographique Formulation (Génie chimique) Liants en phase aqueuse Index. décimale : 667.3 Teinture et impression des tissus Résumé : Packaging must have a good commercial appearance and is generally obtained by ink transferred to its substrate. It is important that the ink used in packaging printing is produced from environmentally friendly and sustainable raw materials as well as being suitable for the printing system. The increasing demand in the field of printed packaging and the scarcity of resources to meet this demand have accelerated the search for new sources for inks. For this purpose, inks produced in the laboratory using a modified cellulose-based binder, a commercial acrylic resin and a commercial soybean protein were compared with a commercial ink. As a result of the study, it was determined that the printability properties of the ink obtained by using the modified cellulose-based binder were better than the ink obtained with commercial soybean protein. It was determined that it showed printability properties close to the ink produced with commercial acrylic binders. By using modified cellulose-based water-based flexographic ink instead of other commonly used binders, more environmentally friendly sustainable inks can be produced. Note de contenu : - METHODOLOGY AND MATERIAL : Ink formulation - Printing conditions - RESULTS AND DISCUSSION : Print density - Print contrast - Specular gloss - The CIE L*a*b* colour values and ΔE - Tone value increases (TVIs) - Dot roundness - Print topography and mottle - Table 1 : Optical and physical properties of a commercial SBS board - Table 2 : Pigment dispersion physical and chemical properties - Table 3 : ProSoy powders physical and chemical properties - Table 4 : Soy vehicle formulation - Table 5 : A standard water-based flexographic ink formulation - Table 6 : Print density of test samplesTABLE 7. Print contrast of test samples - Table 8 : Specular gloss of test samples - Table 9 : The CIE L*a*b* colour values of test samples - Table 10 : Dot measurements of 15% screen dots - Table 11 : Print topography and mottle properties of test samples DOI : https://doi.org/10.1111/cote.12643 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12643 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39535 [article]

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