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Effect of binder latex on printability of paper and board

Effect of binder latex on printability of paper and board Printing is usually the final application of graphical papers before they are delivered to the ultimate consumer. The demands of the printer determine what paper quality is all about. Different printing techniques require different quality parameters. In the following, offset printing — divided into heat set

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Impact of latex on the paper coating process and paper quality

Impact of latex on the paper coating process and paper quality Influence of latex on the coating colour In the preparation of coating colours latex gets into contact with other dispersed systems (mainly pigment slurries) and dissolved materials (e.g. carboxy methyl cellulose (CMC), starch, synthetic thickeners, dispersants). Although rheology additives play the main role in

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Properties of styrene-acrylic and styrene butadiene-latexes

Properties of styrene-acrylic and styrene butadiene-latexes The glass transition temperature (Tg) of styrene-acrylic and styrene butadiene copolymers can be varied within a wide range by changing the ratio of hard monomer (styrene) and soft monomer (butadiene respectively n-butylacrylate). Papers for rotogravure printing require a very flexible coating layer, which can easily adapt to the surface

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Manufacturing and handling of latexes

Manufacturing and handling of latexes Emulsion polymerisation Latexes are manufactured by emulsion polymerisation. The commonly used industrial emulsion polymerisation process is very different from the polymerisation process taking place in monomer emulsion droplets dispersed in water (droplet polymerisation). Emulsion polymerisation is a heterogeneous polymerisation process in which the four reactions of free-radical addition polymerisation (initiation,

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Binder latex – general

Binder latex – general Pigment coatings are applied to paper and paperboard to improve their appearance and printability. The pigment coating imparts smoothness, gloss, brightness and opacity to the base paper, improving the appearance. It also enhances the paper’s printability, which requires resistance to ink film-splitting forces, fountain-solution receptivity, balanced ink setting and holdout, ink

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Ink jet inks

Ink jet inks Ink jet inks have a low viscosity in order to enable accurate and reliable jetting of tiny ink droplets onto the paper. On the other hand, the low viscosity increases the spreading and penetration of ink and makes the ink layer thin, thus increasing the effect of paper properties on print quality.

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Toners in electrophotography and their interaction with paper

Toners in electrophotography and their interaction with paper As noted in the Electrophotography article, electrophotographic toners are commonly powdered materials. Their particle size is typically close to 5 µm. A narrow distribution has been found to be advantageous from the standpoint of resolution. With an increase in the nominal resolution, particle sizes have decreased. Approximately,

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Gluing

Gluing Traditionally, glues used in packaging are divided into three main types, solvent- based systems, water-based systems and hot melts. Because of environmental regulations and safety issues, however, there has been increasing pressure to limit the use of solvent-based systems. The glue to be selected for each individual case depends, among other things, on the

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Sealing

Sealing Since heat sealing is the main method used to prepare a wide variety of flexible and semi-rigid packagings, the heat sealability of extrusion-coated packaging products is one of the most important properties for their use. In packaging applications, seals must provide adequate mechanical strength and leak tightness. Hermetic integrity means gas tight sealing, but

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Ink jet

Ink jet Ink jet is a digital printing method, in which liquid ink droplets are sprayed from tiny nozzles directly onto the paper surface according to the digital page data. The nozzle arrays are located in print heads that are either stationary and page-wide or smaller elements scanning from side to side. The width of

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