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Your contact

Arne Müller

Arne Müller

Head of department
Print finishing & ID-cards

E-mail
mueller
transparent 11x15@fogra.org

Telephone
+49 89. 431 82 - 271

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Current research projects (in the field "print finishing")

50.039
Influences on the appearance of metallic effects in printing exerted by materials, processes, finishing and ambient conditions

Timescale: 01.09.2011 to 28.02.2014
Funding:
Programme of the Federal Ministry of Economics and Energy for the support of “Industrielle Gemeinschaftsforschung (IGF)” via the German Federation of Industrial Research Associations (AiF)

The influence of typical substrates, different metallic pigments, different types of ink binding agents and coatings on the appearance of metallic effects in different printing processes together with their resistance to ageing under changing ambient conditions will be investigated. The proposed research project forms part of a concerted drive by Fogra to investigate the problems associated with metallic effects and it will specifically deal with aspects of material and process influences.

The aim is to be able to provide material, printing process and finishing combinations for the technical implementation of defined levels of metallic effect that allow print buyers to make an independent choice. To this end, the possibilities and limits of the various printing processes and finishing options will be identified. The anticipated reduction in the metallic effect due to coatings will also be documented, as will the achievable improvements in abrasion resistance that these offer. The causes of poor adhesion between the layers of metallic inks and the coating films will be discovered and ways to avoid them demonstrated. A sample book will be produced featuring the metallic effects achievable with different substrates, metallic pigments, ink binding agents and printing processes and will describe them in quantitative terms. The influence of ambient conditions on pigment corrosion will be investigated and guidelines will be developed for avoiding such changes. The possibility of the printing industry adopting assessments of metallic surface colour differences that have been developed in the motor industry will be examined.

 

 

71.011
Use of the laser engraving process for spine and material preparation in the industrial bookbindery

Timescale: 01.11.2012 to 30.10.2014
Funding:
Programme of the Federal Ministry of Economics and Energy for the support of “Industrielle Gemeinschaftsforschung (IGF)” via the German Federation of Industrial Research Associations (AiF)

The purpose of this investigation is to look at the use of laser engraving to solve existing problems with various adhesive procedures in industrial bookbinding. Firstly, laser engraving is a non-contact process with great potential for releasing the fibres of difficult papers when preparing spines, whereas, despite their advanced state of development, the rotary tools used by almost all perfect binders continue to experience basic problems with releasing fibres. Secondly, the process can be used to remove and roughen up layers that jeopardize adhesion and cohesion (ink, varnish, paper coating) in order to prepare for gluing. Important objectives for the research project to investigate are increases in adhesion when producing perfect bindings, when gluing thread stitched book blocks and when side gluing softcovers.

This should make it possible for bookbinding companies to adopt measures to increase and ensure quality when dealing with problematic upstream products and to handle difficult product concepts. Given that industrial bookbinding needs to adjust to a sustained trend to difficult to process papers resulting from the wide variety of paper grades, inks and coating systems to be found in the market, this is something that is important. The binding of papers with multiple coating layers that have been printed with heavy applications of ink and full surface coated, high grammage papers has now become an everyday requirement. Additionally, the constantly increasing market share of digitally printed products and the variety of materials and the new requirements associated with these makes this an even more important challenge.  

 



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