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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Modelling the spreading of screen ink on non-porous substrates / J. M. Bradley in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B4 (12/2005)  

[article]  inSURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 88, B4 (12/2005) . - p. 231-236 Titre : Modelling the spreading of screen ink on non-porous substrates Type de document : texte imprimé Auteurs : J. M. Bradley, Auteur ; A. Manning, Auteur Année de publication : 2005 Article en page(s) : p. 231-236 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Encre Energie de surface Modélisation des dépôts liquides Revêtements organiques Sérigraphie Index. décimale : 667.9 Revêtements et enduits Résumé : The reduction of dot gain in half-tone printing is desirable in order to accurately reproduce designs in printed format. An important contribution to dot gain is the spreading of ink on the substrate after image formation but prior to immobilisation by curing or drying. The spreading of a typical screen ink was modelled to determine the thermodynamic processes controlling the rate of drop spreading and the timescales over which they are significant. Suggestions are offered as to the characteristics desirable in polymer substrates in order to minimise dot spreading. Note de contenu : - EXPERIMENTAL : Samples - Surface tension and surface energy measurements - Contact-angle measurement - Bulk viscosity - Modelling and error estimation - RESULTS AND DISCUSSION : Variation in surface tension - Correlations in the dynamic spreading parameters - Implications for the control of dot gain - Table 1 : Bulk viscosity of Uvispeed k at the temperature of contact angle relaxation measurements - Table 2 : Surface energy and compopnents of the polymer substrates as supplied - Table 3 : Fitted parameters for the dynamic spreading of Uvispeed k DOI : 10.1007/BF02699577 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699577.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5400 [article]

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