Technical Guides
Developed to answer your most frequently asked technical challenges
For any further information, please contact us.
Pigment & Coating Colour Preparation
The main aim of this guide is to provide useful, practical guidelines for users of coating pigments in the paper industry.
Issue Date: 08/03/11 | 1.27MB PDF File | 
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Filler Concepts for Linerboard
Linerboard producers globally are facing increased competition for fiber sources, which has resulted in higher raw material costs.
Issue Date: 16/10/11 | 1.5MB PDF File | Download
Fillers for Uncoated Wood-Free
Uncoated wood-free paper is the largest segment in the printing and writing category accounting for nearly 50% of printing and writing production globally.
Issue Date: 26/05/10 | 1.4MB PDF File | Download
Pigment Effects on Coating Strength
Coating strength is a critical property of printing papers if they are to survive the demands of modern printing processes.
Issue Date: 04/05/10 | 1.6MB PDF File | Download
E-Type - Plates in the Extreme
Imerys has developed a platform of platy clays from Middle Georgia with large plate diameterand thin crystal dimension that can deliver unique value in a variety of paper grades.
Issue Date: 13/04/10 | 2.4MB PDF File | Download
Pigments for Matt Coating
Historically glossy grades have tended to dominate the coated paper market, but matt and silk/satin grades (up to ~40 TAPPI 75° gloss) now make up a significant and growing percentage.
Issue Date: 16/11/09 | 2.0MB PDF File | Download
Formulation Effects in LWC Offset
Producers of coated printing and writing papers in the mature markets of North America and Europe are facing very challenging times.
Issue Date: 12/10/09 | 2.0MB PDF File | Download
Calcined Clay in LWC
Generally, calcined clay has been used as an economical opacifier and its use in light weight coated paper is limited only by its effect on coating viscosity and rheology.
Issue Date: 12/10/09 | (1.6KB PDF File | Download
Coatings for Offset Lithography
Offset Lithography is one of the dominant printing processes today and is predicted to grow in the future.
Issue Date: 08/10/09 | 1.53MB PDF File | Download
Fillers for Newsprint
Worldwide newsprint production is about 42M tonnes/year and uses a relatively low level of fresh filler of between 2 and 12%.
Issue Date: 05/10/09 | 1.5MB PDF File | Download
Rotogravure Printing
Rotogravure printing for publication and packaging is a significant market in Europe. It is widely used for long print runs for high circulation magazines and catalogues.
Issue Date: 18/05/09 | 1.20MB PDF File | Download
Capim™ Kaolin Applications
Imerys Rio Capim Caulim (IRCC) kaolins have been produced since the mid 1990's and have become firmly established as the high quality products of choice for the global paper market.
Issue Date: 17/03/09 | 1.01MB PDF File | Download
Topcoat Formulation Development
Multi-layer coating is common practice in glossy coated paper and board applications globally. In these applications the role of the topcoat is principally to provide a micro-smooth surface suitable for paper and print gloss development.
Issue Date: 17/02/09 | 1.49MB PDF File | Download
Rheology
The flow properties of mineral slurries and coating colours are critical in both handling (pumping, screening and storage) and during application of the coating onto the basepaper.
Issue Date: 06/01/09 | 2.67MB PDF File | Download
Advanced Rheology
Viscoelastic Effects in Coating - In general, pigments have relatively minor effects on the viscoelastic character of coating colours.
Issue Date: 06/01/09 | 447KB PDF File | Download
Effect of Fillers on LWC
In traditional LWC production, the majority of the mineral filler in the base paper comes from coated broke.
Issue Date: 10/12/08 | 7.16MB PDF File | Download
Print Mottle
The perception of paper and print quality is often linked to subtle phenomena such as the visual evenness of the paper or print surface.
Issue Date: 05/03/07 | 3.20MB PDF File | Download
Metered Size Press Coating
The metered size press (MSP) coater has become a key option for producing lightweight coated (LWC) grades and the precoat in double and triple coated grades.
Issue Date: 16/04/07 | 714KB PDF File | Download
Flexographic Printing
Recent improvements in the flexographic printing process have raised the print quality to the same level as offset lithography and rotogravure printing.
Issue Date: 16/04/07 | 3.56MB PDF File | Download
Carboflex Coating Concepts
Light scatter is the papermaker's most flexible tool for developing paper optics which in part has lead to the development and widespread use of engineered or narrow particle size distribution carbonates.
Issue Date: 14/04/08 | 1.76MB PDF File | Download
Film Press Pigmented Sizing
It is becoming increasingly common to include white pigments in sizing solutions, known as pigmented sizing.
Issue Date: 29/04/08 | 1.40MB PDF File | Download
New Concepts for Barrier Coatings
The increased focus on recycling and sustainable packaging is driving the trend for water-based barrier coatings to replace fluorocarbon and extruded polymer barrier coatings.
Issue Date: 15/05/08 | 2.08MB PDF File | Download
