Comparison of textile print quality between inkjet and screen printings / S. Kiatkamjornwong in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B1 (03/2005)  

[article]  inSURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 88, B1 (03/2005) . - p. 25-34 Titre : Comparison of textile print quality between inkjet and screen printings Type de document : texte imprimé Auteurs : S. Kiatkamjornwong, Auteur ; H. Noguchi, Auteur ; P. Putthimai, Auteur Année de publication : 2005 Article en page(s) : p. 25-34 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Colorimétrie Coton Le coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles). Encre en phase aqueuse Impression jet d'encre Impression sur étoffes Liants Pigments Polyacrylates Rhéologie Sérigraphie Index. décimale : 667.9 Revêtements et enduits Résumé : This research was concerned with an investigation of cotton print qualities that were achieved by inkjet printing and screen printing. The acrylic binder, S-711, with a pigment-to-binder (P/B) ratio of 1:2 (by weight) was used to produce one set of inkjet inks. BR-700 was used in the creation of another set of screen inks. Furne silica was added to the screen ink to increase the viscosity so that the ink would meet the rheology requirements. The viscosity and flow behaviour of both inks were acceptable. Both the ink viscosity and the particle-size distribution were slightly increased during storage at an ambient temperature for two months. The inkjet ink printed tabrics were pretreated with a solution of poly(ethylene oxide) having 2 to 3 million Dalton molecular weight. The printed fabrics from both inks were analysed for colour saturation, colour gamut and their volume, density, tone reproduction, stiffness, air permeability, and crock fastness. The type, concentration and P/B ratio were exactly the same in both inks in the pigment dispersions. Even though the loaded ink volume on fabrics, by inkjet, was tuned to be approximately the same in optical density as that given by the screen ink, by a multipass mode printing, both printed fabrics gave different colour saturations, colour gamuts and tone reproductions. The colour gamut volume, stiffness, air permeability and crock fastness of the inkjet inks are superior to those of screen inks. The print quality of the inkjet printing on cotton fabric was, thus, better. However, the inkjet ink printed cotton fabric needed to be printed three times to produce the same colour and tone reproduction as that produced by screen printing. Note de contenu : - EXPERIMENTAL : Preparation of non-treated cotton fabric - Preparation of pretreated cotton fabric - PREPARATION OF AQUEOUS-BASED PIGMENTED INKS : Inkjet ink - Screen ink - Inkjet printing - Screen printing - Characteristics of binders - Characterisation of printed cotton fabric - Colour measurement - RESULTS AND DISCUSSION : Characterisation of binders and inks - Rheological perspective of inkjet ink - Rheological perspective of the screen inks - Print quality - Colour values - Tone reproduction and ink density - PRINTED FABRIC PROPERTIES : Stiffness - Air permeability properties - Crock fastness - COMPARISON OF INKJET INKS AND SCREEN PRINTING INKS ON COTTON : Effect of fabric pretreatment on the colour gamut and the tone reproduction - Effect of the ink deposition on colour - Effect of ink deposition on the printed fabric stiffness and crock fastness - Table 1 : Colour gamut volume of inkjet ink and screen ink - Table 2 : Colour saturation of inkjet ink and screen ink - Table 3 : Dry and wet crock fastness of the inkjet ink and screen ink printed cotton fabrics DOI : 10.1007/BF02699704 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699704.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5433 [article]

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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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Effect of pigment colour on the printing performance of synthetic leather using a ultraviolet-curable water-borne polyurethane acrylate binder / Gülçin Baysal in COLORATION TECHNOLOGY, Vol. 135, N° 4 (08/2019)  

[article]  inCOLORATION TECHNOLOGY > Vol. 135, N° 4 (08/2019) . - p. 283-291 Titre : Effect of pigment colour on the printing performance of synthetic leather using a ultraviolet-curable water-borne polyurethane acrylate binder Type de document : texte imprimé Auteurs : Gülçin Baysal, Auteur ; Berdan Kalav, Auteur ; Burcak Karaguzel Kayaoglu, Auteur Année de publication : 2019 Article en page(s) : p. 283-291 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Brillance (optique) -- Mesure Colorimétrie Copolymère uréthane acrylate Cuir synthétique imprimé Encre en phase aqueuse Essai de dureté Impression jet d'encre Liants en phase aqueuse Photoamorceurs (chimie) Résistance à l'abrasion Résistance au chocs Index. décimale : 667.2 Colorants et pigments Résumé : The effect of pigment colours, cyan (C), magenta (M) and yellow (Y), and a blend of these (CMY blend) on the printing performance of synthetic leather using a ultraviolet (UV)-curable water-borne polyurethane acrylate binder and two types of photoinitiators was investigated. The curing process was carried out at different radiation doses using gallium and mercury UV lamps in combination. The performance of the prints was evaluated with abrasion resistance, crock fastness, gloss and hardness values and K/S. Chemical changes in the cured film structures due to UV curing were analysed by Fourier Transform–infrared spectroscopy measurements. The highest hardness values for clear and pigmented cured films were obtained with a gallium and mercury lamp combination at the highest energy density (1529 mJ/cm2). The highest K/S was obtained for the sample printed with the formulation including the C pigment and cured under a gallium and mercury lamp combination at low energy density (398 mJ/cm2). The M‐pigmented film displayed the highest hardness and abrasion resistance, whereas lower values were obtained with films pigmented with Y and C, and CMY blend, successively. The highest dry and wet crock values were obtained with the formulation including the M pigment. CMY-pigmented film showed the highest gloss values at all energy densities. The pigment colour affected the curing degree of printed films due to the different absorption/transmission intervals of each colour in the UV spectrum. Note de contenu : - EXPERIMENTAL : Materials - Methods - RESULTS AND DISCUSSION : UV curing and pendulum hardness measurements - FTIR - Colour measurements - Gloss measurements - Crock fastness - Abrasion resistance DOI : 10.1111/cote.12402 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12402 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32831 [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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Etude et optimisation de l'imprimabilité de films PVC produits par calandrage et enduction / Romain Magnier / Paris : Ecoles des Mines de Paris (2015) 

Titre : Etude et optimisation de l'imprimabilité de films PVC produits par calandrage et enduction Type de document : texte imprimé Auteurs : Romain Magnier, Auteur ; Bruno Vergnes, Directeur de thèse ; Evelyne Darque-Ceretti, Directeur de thèse Editeur : Paris : Ecoles des Mines de Paris Année de publication : 2015 Importance : 166 p. Présentation : ill. Format : 30 cm Note générale : Bibliogr. Catégories : Chlorure de polyvinyle Encre en phase aqueuse Films plastiques Héliogravure Impression sur matières plastiques Rhéologie Index. décimale : 686.23 Impression Résumé : La qualité d'impression est une notion difficile à maîtriser. L'oeil est souvent utilisé en industrie comme outil permettant de juger la qualité d'un film imprimé sur support PVC. Afin d'atteindre un niveau supérieur de qualité, il est nécessaire de trouver un moyen pour quantifier la qualité d'impression et ainsi permettre d'atteindre soit une qualité dite « point par point », soit une qualité dite "all-over". Plusieurs éléments ont été utilisés pour cette quantification : une image en microscopie optique de l'échantillon, ainsi qu'une valeur d'intensité moyenne et d'homogénéité de couleur, que l'on obtient grâce à un rugosimètre confocal. Ainsi nous avons pu définir, pour un support mis en forme par calandrage et un support mis en forme par enduction, Les paramètres majeurs agissant sur la qualité d'impression. En termes de procédé, il apparaît que la vitesse d'impression et la pression du cylindre presseur influencent grandement l'imprimabilité. Au niveau des matériaux utilisés, la viscosité et la tension de surface de l'encre ont un effet important alors que, en terme de support, un film calandré sera plus sensible aux variations des différents paramètres qu'un film enduit. Note de contenu : 1. INTRODUCTION GENERALE : CONTEXTE ET PROBLEMATIQUE : L'impression : un enjeu majeur - Le procédé d'héliogravure et la qualité d'impression - Les problèmes rencontrés en impression avec le procédé d'héliogravure - La qualité d'impression : définition - Les objectifs de l'étude 14 2. ETAT DE L'ART : Les procédés d'impression - Description sommaire des étapes de l'impression par héliogravure - Influence des paramètres procédés sur l'imprimabilité - Influence des paramètres matériaux sur la qualité d'impression - Bilan du chapitre 2 3. MATERIAUX ET DISPOSITIFS EXPERIMENTAUX : Les dispositifs expérimentaux - Les matériaux utilisés pour l'étude - Bilan du chapitre 3 4. RESULTATS ET DISCUSSION SUR LA QUALITE D'IMPRESSION : Méthodologie des essais d'impression - Influence des paramètres procédés sur la qualité d'impression - Influence des propriétés des encres sur la qualité d'impression - Influence des propriétés des supports sur la qualité d'impression - Bilan du chapitre 4 5. OBSERVATION ET MESURE DU MECANISME DE TRANSFERT DE L'ENCRE DU CYLINDRE ENCREUR SUR LE SUPPORT : Le principe de l'essai - Le montage - Conditions expérimentales et exemple d'observation - Influence des principaux paramètres sur le transfert de l'encre - Bilan du chapitre 5 6. CONCLUSIONS ET PERSPECTIVES Thèse : Thèse : Spécialité Sciences et génie des matériaux : 2015 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24391

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Ink-jet printing paper with improved waterfastness / Jinzhen Shi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 1, N° 3 (07/2004)  

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