Application of nanostructured titanium dioxide pigments in paper coating: a comparison between prepared and commercially available ones / Fatma A. Morsy in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 2 (03/2016)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 13, N° 2 (03/2016) . - p. 307-316 Titre : Application of nanostructured titanium dioxide pigments in paper coating: a comparison between prepared and commercially available ones Type de document : texte imprimé Auteurs : Fatma A. Morsy, Auteur ; Samya El-Sherbiny, Auteur ; Marwa Samir, Auteur ; Osama A. Fouad, Auteur Année de publication : 2016 Article en page(s) : p. 307-316 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anatase L’anatase est une espèce minérale formée de dioxyde de titane de formule TiO2 avec des traces de fer, d'antimoine, de vanadium et de niobium. Dioxyde de titane Nanoparticules Papier -- Propriétés mécaniques Papier et carton couché Pigments -- Propriétés optiques Pigments inorganiques Rutile Le rutile est une espèce minérale composée de dioxyde de titane de formule TiO2 avec des traces de fer (près de 10 % parfois), tantale, niobium, chrome, vanadium et étain. Il est trimorphe avec la brookite et l'anatase. Il est la forme la plus stable de dioxyde de titane et est produit à haute température, la brookite se formant à des températures plus basses et l'anatase formée à des températures encore plus basses. Index. décimale : 667.9 Revêtements et enduits Résumé : Nano-TiO2 pigments in pure crystallographic anatase and rutile phases have been successfully prepared by hydrothermal at 120°C and hydrolysis methods, respectively. The laboratory-prepared pigments were characterized parallel to two commercial pigments of the same crystal structure. All pigments were applied in paper coating mixtures, and their influence on coated paper properties was systematically investigated. X-ray diffraction investigation showed that the laboratory-prepared pigments using the hydrothermal method at 120°C were pure anatase, whereas hydrolysis method produced pure rutile phase pigment. The application of the prepared nanopigments and the corresponding commercial TiO2 phases in paper coating revealed that clay/rutile nano-TiO2 pigments in paper coating mixture decreased coated paper roughness more than blending clay with anatase nano-TiO2 pigments. Commercial nano-TiO2 pigments increased porosity of coated paper at both the 30% and 50% addition of nano-TiO2 pigments to clay, while laboratory-prepared nano-TiO2 pigments highly decreased it at 30% addition of nano-TiO2 to clay, compared to clay only. Blending of clay/nano-TiO2 pigments improved both brightness and opacity of the coated paper where commercial pigments are more effective. Burst, tensile strength, stretching, and TEA were improved in the case of all pigments. The 50% addition of the prepared and commercial nanopigments in conjunction with clay improved the mechanical coated paper properties more than 30% addition (except the cases of stretching and TEA of the commercial pigments). The coated paper samples were offset printed. It was found that blending of clay/nano-TiO2 pigments improved print density. Commercial nano-TiO2 pigments improved print gloss more than the laboratory-prepared ones. This result was found consistent with the results of coated paper roughness. Note de contenu : - EXPERIMENTAL : Materials - Preparation of titanium dioxide nanopigments - Application of nano-TiO2 pigments in paper coating - Preparation of coating mixtures and coated paper samples - Printing of coated paper samples - characterization of the nano-TiO2 and coated paper samples - RESULTS AND DISCUSSION : Characterization of the prepared and commercial titanium dioxide pigments - Application in paper coating DOI : 10.1007/s11998-015-9735-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9735-7.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26115 [article]

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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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Deinking of indigo prints using high-intensity ultrasound / A. Fricker in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 89, B2 (06/2006)  

[article]  inSURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 89, B2 (06/2006) . - p. 145-155 Titre : Deinking of indigo prints using high-intensity ultrasound Type de document : texte imprimé Auteurs : A. Fricker, Auteur ; A. Manning, Auteur ; R. Thompson, Auteur Année de publication : 2006 Article en page(s) : p. 145-155 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Désencrage Encre électronique Impression numérique Indigo Papier et carton couché Ultrasons Index. décimale : 667.9 Revêtements et enduits Résumé : Fears have been expressed about the difficulty of deinking waste paper generated by the Indigo printing process. In this study, high-intensity ultrasound has been used to remove ink from Indigo digitally printed papers and break the ink particles down to sizes which are compatible with the flotation process used in deinking plants. The influences of temperature and power density have been studied and both found to have a significant effect on the resultant ink particle-size distributions. Almost 100% ink detachment has been achieved using a combination of ultrasound and aqueous washing. The conclusion is that detachment and particle-size reduction using ultrasound and aqueous washing suggests that Indigo digitally printed papers may not be so difficult to deink and recycle as originally thought. Note de contenu : - Experimental - Results for preliminary trials - Discussion of preliminary results - Sapphire coated paper - Text and image prints - Indigo inks printed as solids on sapphire coated paper - Summary of reesults for sapphire coated paper - Table 1 : Summary of preliminary findings - Table 2 : Summary of counts for unsonicated and 20 minutes sonicated text and image samples - Table 3 : Percentages removed onwashing DOI : 10.1007/BF02699644 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699644.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5385 [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 grey component replacement processing and varnishing on the light fastness of colours on cardboard prints / Tomislav Cigula in COLORATION TECHNOLOGY, Vol. 139, N° 1 (02/2023)  

[article]  inCOLORATION TECHNOLOGY > Vol. 139, N° 1 (02/2023) . - p. 16-27 Titre : Effect of grey component replacement processing and varnishing on the light fastness of colours on cardboard prints Type de document : texte imprimé Auteurs : Tomislav Cigula, Auteur ; Tamara Tomasegovic, Auteur ; Davor Donevski, Auteur ; Tomislav Hudika, Auteur Année de publication : 2023 Article en page(s) : p. 16-27 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Emballages Fourier, Spectroscopie infrarouge à transformée de Impression en couleur Mesure Papier et carton couché Photostabilité Réflexion totale atténuée Résistance à l'abrasion Solidité de la couleur Vernis en phase aqueuse Index. décimale : 535.6 Couleur Résumé : The visual appearance of packaging is one of its most important features. Electromagnetic irradiation causes a change in colour and often leads to colour fading (ie, to diminished visual appearance of a printed product). This research study aimed to determine the combined effect of grey component replacement image processing and varnishing on the protection of prints' appearance when exposed to accelerated ageing. For that purpose, two test charts were printed in a lithographic press and coated with water-based and ultraviolet-curable varnish before exposing them to xenon light. The prepared prints were evaluated by determining the tone values and colour difference, as well as the rub and abrasion resistance. In addition, Fourier Transform–infrared-attenuated total reflectance spectra were recorded to detect possible chemical changes caused by the (AcA). The results showed that the investigated period of (AcA) caused significant differences in the tone values of yellow, while the other primary colours proved to be more resistant. The water-based varnish provided better protection than the ultraviolet-curable varnish. The grey component replacement image processing diminished the colour difference caused by (AcA) on all the prepared print samples, and was particularly detected in tertiary colours containing the mid-range tone values of yellow (34%-68%). Both varnishes improved the rub resistance of aged prints, but only ultraviolet-curable varnish improved the abrasion resistance of both the unaged and the aged prints. In conclusion, applying varnish to prints ensured enhanced rub and abrasion resistance and diminished the colour change caused by (AcA). Finally, improved resistance to colour change was achieved by processing images with the grey component replacement method. Note de contenu : - EXPERIMENTAL : Materials and preparation of samples - Methods of measurement and analysis - RESULTS AND DISCUSSION : TVs of process colours and colour difference of tertiary colours - Rub and abrasion resistance of the prints - FTIR-ATR spectroscopy DOI : https://doi.org/10.1111/cote.12630 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12630 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39202 [article]

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Enhancing coated paper mechanical properties via doping kaolin with ammonium molybdate / Samya El-Sherbiny in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 6 (11/2018)  

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Enhancing egyptian kaolinite via calcination and dealumination for application in paper coating / Samya El-Sherbiny in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 4 (07/2015)  

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Influence of pigment and binder composition on the dynamic water penetration and dried structure of precoating layers for double-coated paper / Hye Jung Youn in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)  

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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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Modeling the penetration of polymer into paper during extrusion coating / Mubarak Khlewee in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 1 (01/2022)  

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Modélisation de la rigidité du papier couché / F. Cella in LES CAHIERS DE RHEOLOGIE, Vol. XII, N° 3 (10/1994)

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Optical-physical and inkjet printing properties of created hybrid CaCO3 coated papers / Ufuk Yilmaz in COLORATION TECHNOLOGY, Vol. 139, N° 6 (12/2023)  

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Preparation and characterization of PVOH/kaolin and PVOH/talc coating dispersion by one-step process / Vaishali Saroha in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 4 (07/2022)  

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Rhéologie de suspensions complexes : les bains d'enduction en papéterie / J. P. Faure in LES CAHIERS DE RHEOLOGIE, Vol. XIV, N° 2 (09/1995)

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A study of the effect of several extenders on the colour properties of water-based corrugated flexographic inks : Red inks based on pigment red 49:2 / Juan Segurola in SURFACE COATINGS INTERNATIONAL. PART A : COATINGS JOURNAL, Vol. 87 A, 06 (07/2004)  

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Sustainable coatings based on core-shell pigments to enhance antibacterial and other beneficial paper properties / M. G. Mohamed in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 6 (11/2023)  

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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)  

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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)  

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The evaluation of new printed standards for colour fastness to light / S. L. Pugh in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 87, B1 (02/2004)  

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The evaluation of printability and non-enzymatic NADH reduction of 4'-chlorophenylazo-2-naphthol for use as a printing pigment / M. Oktav in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B3 (09/2005)  

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