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A Novel Coating Formulation for Silica Inkjet Layer Coatings

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Silica based inkjet layer coatings made with the addition of special binders are widely used for inkjet coatings today. However, one limiting factor of the existing formulations is that they can only be used at low solids (<30%), which makes high speed coating very complicated. Another limiting factor is that most current formulations require the addition of special binders. However, the level of binder required is a compromise. Low levels of binders give good pigmented ink compatibility but poor physical properties. High volumes plasticize coating layer but reduce ink receptivity. This paper introduces a new nano structured silica coating formulation designed to overcome the limitations of existing inkjet technologies. The differentiating factors of this formulation are its high solids (up to 50%) and its self binding mechanism. Therefore, the ready-to-use formulation requires no organic binders. The rheology of the formulation gives very good runnability on various size presses and coaters. This new formulation has been proven in pilot and mill trials. Results showed high print density, dimensional stability, good water fastness and sharpness with most aqueous inkjet printers.

Document Type: Research Article

Publication date: January 1, 2008

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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