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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