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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)
[article]
Titre : Influence of pigment and binder composition on the dynamic water penetration and dried structure of precoating layers for double-coated paper Type de document : texte imprimé Auteurs : Hye Jung Youn, Auteur ; Hak Lae Lee, Auteur Année de publication : 2022 Article en page(s) : p. 931-938 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Couleur
Enrobage (technologie)
Formulation (Génie chimique)
Humidité -- Absorption:Eau -- Absorption
Liants
Papier -- Revêtements
Papier et carton couché
Pigments
Rayonnement ultraviolet -- Absorption
Revêtements -- Analyse
SéchageIndex. décimale : 667.9 Revêtements et enduits Résumé : The influence of precoating colors on the dynamic water penetration behavior of double-coated paper was investigated using a laboratory coater equipped with two coating heads. Emphasis was placed on the effects of the pigment combination and binder type on dynamic water penetration. In addition, the latex content on the surface of the coating layer was examined by UV absorbance analysis. The amount of water that penetrated the base paper was found to be proportional to the square root of the contact time between the coating color and the base paper, regardless of the pigments and binders used. When a large amount of pigment with a fine particle size was used, or the starch binder content was increased, the low shear viscosity of the coating color increased, and the amount of water penetration into the base paper decreased. The UV absorbance analysis showed that higher water holding in the coating color increased the latex content on the surface of the coating layer. Increasing the viscosity or water retention of the coating color was found to reduce the amount of binder migration into the base paper. Note de contenu : - EXPERIMENTAL SECTION : Materials - Coating formulation - Coating and drying - Coating analysis
- RESULTS AND DISCUSSION : Dynamic absorption of coating color - Pore structure of the precoating layer - Surface properties of precoating layer
- Table 1 : Precoating color formulations in parts per hundred
- Table 2 : Properties of precoating color as a function of pigment mixing ratio
- Table 3 : Properties of precoating color as a function of the binder mixing ratio
- Table 4 : Structural parameters of precoated layers as a function of pigment composition
- Table 5 : Structural parameters of precoated layers as a function of pigment mixing ratio
- Table 6 : Surface properties of precoated layers as a function of pigment composition and pigment mixing ratio
- Table 7 : Precoated layer UV absorbance and water absorption into the base paperDOI : https://doi.org/10.1007/s11998-021-00569-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00569-8.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38087
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 3 (05/2022) . - p. 931-938[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23605 - Périodique Bibliothèque principale Documentaires Disponible De-inking of thick film UV-cured coatings using high intensity ultrasound / A. N. Manning in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 87, B1 (02/2004)
[article]
Titre : De-inking of thick film UV-cured coatings using high intensity ultrasound Type de document : texte imprimé Auteurs : A. N. Manning, Auteur ; R. C. Thompson, Auteur Année de publication : 2004 Article en page(s) : p. 21-26 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cavitation
Couches épaisses
Désencrage
Papier -- Revêtements
Sérigraphie
UltrasonsIndex. décimale : 667.9 Revêtements et enduits Résumé : The aim of this work was to investigate the use of high intensity ultrasound in the de-inking of papers printed with UV-cured inks. Thick ink films printed by screen process printing were subjected to 20kHz ultrasound. The effects of different exposure times were studied under conditions of neutral pH.
The treatment resulted in the controlled breakdown and detachment of solid and halftone printings into particle sizes that could be removed by commercial flotation and washing methods.Note de contenu : - Solid printings
- Halftone printingDOI : 10.1007/BF02699560 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699560.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5478
in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 87, B1 (02/2004) . - p. 21-26[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000392 - Périodique Bibliothèque principale Documentaires Disponible 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)
[article]
Titre : Modeling the penetration of polymer into paper during extrusion coating Type de document : texte imprimé Auteurs : Mubarak Khlewee, Auteur ; Mohammed Al-Gharrawi, Auteur ; Doug Bousfield, Auteur Année de publication : 2022 Article en page(s) : p. 25-34 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Enduction
Extrusion (mécanique)
Fibres cellulosiques
Modèles mathématiques
Nanofibres
Papier -- Revêtements
Papier et carton couché
Pénétration (physique)
Polyéthylène
Revêtements organiques
ThermocinétiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : During the extrusion coating of paper or paperboard, a molten film of polymer is pressed against a paper surface to generate waterproof packaging materials. Hot-melt glues are also applied to various porous materials and paperboard to generate packaging. In both cases, the penetration of the polymer into the pore space influences the product performance and the ability of the product to be recycled at the end of life. While there is much experimental work discussing various parameters in these operations, little theoretical work has been reported. Here, a simple model based on Darcy’s law is proposed to predict the penetration of polyethylene (PE) into paper and paper that has been coated with cellulose nanofibers (CNF). Another model, based on the flow of a polymer into a pore that includes dynamic heat transfer is developed, where the viscosity is a function of temperature. Experiments were conducted where a PE film is pressed against samples and the amount of fiber recovery is characterized. The model predictions are compared to experimental results. Good agreement for different paper types, pressing times, and temperatures is obtained after a calibration factor is used. DOI : https://doi.org/10.1007/s11998-021-00487-9 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00487-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37142
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 1 (01/2022) . - p. 25-34[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23313 - Périodique Bibliothèque principale Documentaires Disponible Optical-physical and inkjet printing properties of created hybrid CaCO3 coated papers / Ufuk Yilmaz in COLORATION TECHNOLOGY, Vol. 139, N° 6 (12/2023)
[article]
Titre : Optical-physical and inkjet printing properties of created hybrid CaCO3 coated papers Type de document : texte imprimé Auteurs : Ufuk Yilmaz, Auteur Année de publication : 2023 Article en page(s) : p. 654-666 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Amidon cationique
Carbonate de calciumLe 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.
Carboxyméthylcellulose
Enrobage (technologie)
Impression jet d'encre
Liants
Papier -- Revêtements
Papier enduit
Papier et carton couché
Revêtements -- Propriétés optiques
Revêtements -- Propriétés physiquesIndex. décimale : 667.4 Encres Résumé : The aim of this study is to examine the role of different formulations of calcium carbonates on the inkjet printing quality, with the use of cationic carboxymethyl cellulose (CMC)-starch as a binder in the formation of the coating structure of paper to use for inkjet printing. For this, GCC (ground calcium carbonate), PCC (precipitated calcium carbonate) and ECC (eggshell calcium carbonate), which have been tried as new coating materials in recent years, are mixed in different proportions to form a different coated formulation and plastered on the newly produced paper surface. Then, optical and physical tests of the obtained samples are carried out. Then, printing properties of the papers on which drop-on-demand system inkjet printing is made are examined. According to the obtained data, it is determined that the optical properties of coated paper with GCC + PCC blends outperformed papers coated with other blends. According to the physical test results, GCC + PCC blended coated papers showed the best performance in breaking length and tear indices. ECC + PCC blended coated papers however showed the best performance in burst indices. It is determined that as the particle size of the calcium carbonates in the coating materials decreased, the burst indices value also decreased. This situation is the opposite for breaking length and tear indices values. When the inkjet printing features are examined, it is seen that the best results are obtained from GCC + ECC coated papers in general. The most optimal metamerism indices results, measured under three different light sources, are obtained on GCC + PCC coated papers. Note de contenu : - Optical-physical properties of specimens
- Inkjet printing properties of specimensDOI : https://doi.org/10.1111/cote.12679 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12679 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40117
in COLORATION TECHNOLOGY > Vol. 139, N° 6 (12/2023) . - p. 654-666[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24320 - Périodique Bibliothèque principale Documentaires Disponible 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)
[article]
Titre : Preparation and characterization of PVOH/kaolin and PVOH/talc coating dispersion by one-step process Type de document : texte imprimé Auteurs : Vaishali Saroha, Auteur ; Hina Khan, Auteur ; Sharad Raghuvanshi, Auteur ; Dharm Dutt, Auteur Année de publication : 2022 Article en page(s) : p. 1171-1186 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alcool polyvinylique
Angle de contact
Caractérisation
Kaolin
Papier -- Revêtements
Papier et carton couché
Perméabilité
Résistance à la traction
Résistance aux huiles et graisses
Revêtements organiques
Stabilité thermique
Talc
Transmission de vapeur d'humiditéIndex. décimale : 667.9 Revêtements et enduits Résumé : The poor barrier of cellulosic paper against water vapor and oil limits its wide application as a packaging material. Lamination, extrusion, and dispersion coating are applied on paper surface to improve barrier properties. Dispersion coating can be applied to paper surface on line during paper preparation using rod coater. In the present study, an attempt has been made to increase the process speed of coating preparation by single-step process at varying pigment concentration. Coating dispersion was applied on kraft paper using laboratory rod coated and dried in hot air oven at 80°C for 5 min. Furthermore, thermal stability, water vapor barrier properties, and grease resistance of PVOH/kaolin and PVOH/talc-coated paper were studied. Additionally, the effect of single layer and bilayer coating on paper properties was also studied. Permeability model was used to predict the orientation of pigments to the surface of paper. Viscosity of both kaolin and talc-based dispersion increased with the increase in pigment concentration. Thermal studies showed that at 600°C residual mass (%) of PVOH film increased from 0.6 to 9.89% and 15% with the addition of 25% (by weight) kaolin and talc pigment. At high pigment concentration (40–50%, by weight), the highest reduction in WVTR was observed for both the pigments. Excellent coverage of paper surface and high grease resistance was observed for all coating formulations. Our study showed that talc provides better thermal and barrier properties to coated paper than kaolin. Note de contenu : - MATERIALS AND METHODS : Materials - Coating dispersion preparation - Paper coating and film preparation - Characterization - Thermogravimetric analysis (TGA) - FESEM - WVTR - KIT test - Statistical analysis
- RESULTS AND DISCUSSION : Effect of pigments on rheological properties of PVOH - X-ray diffraction (XRD) - ATR-FTIR - Thermal stability - Tensile strength - Roughness and porosity of coated paper - Contact angle
- Table 1 : Characteristic parameter of kaolin in PVA/kaolin nanocomposite film
- Table 2 : Crystallinity index of XRD diffractogram of composite film with respect to 101 plane reflections
- Table 3 : Residual mass of PVOH, PVOH/kaolin, and PVOH/talc composite film at different temperatures
- Table 4 : Roughness and porosity of uncoated and coated paper
- Table 5 : Contact angle of uncoated and PVOH/kaolin and PVOH/talc-coated papers
- Table 6 : Grease resistance (KIT test) of single- and double-coated paperDOI : https://doi.org/10.1007/s11998-021-00596-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00596-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38045
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 4 (07/2022) . - p. 1171-1186[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23574 - Périodique Bibliothèque principale Documentaires Disponible Relative permeability of barrier dispersion coatings applied on paper-based materials ; mathematical modeling and experimental validation / Gonzalo A. Martinez-Hermosilla in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 2 (03/2022)
PermalinkSustainable 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)
PermalinkThe 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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