| |
 |
| |
| |
European Coatings Conference
Extra
Pre-Conference Tutorial
11 June 2008
Berlin, Germany
Main conference
"Food Contact Coatings"
12/13 June 2008
Berlin, Germany
|
|
| |
 Welcome
At a Glance
Tutorial
Abstracts
Delegates Section
|
| |
|
|
| Events > Coatings Events > Food Contact Coatings > Abstracts |
|
|
 |
|
|
|
|
| |
MAIN CONFERENCE: Abstracts
| THURSDAY, 12 June 2008 |
| |
| |
An overview of food contact legislation
Rob Veraart, Keller und Heckman LLP, Belgium
|
| SESSION I: Raw material developments |
| |
Additive solutions for food contact coatings - general recommendations and new developments
Andreas Kreutzer, Byk-Chemie GmbH, Germany
Andreas Kreutzer, Byk-Chemie GmbH, Germany Formulators of packaging coatings face the same challenges to optimize their coatings to the customers needs like anybody else in the coatings industry: How to improve scratch and abrasion resistance, bad substrate wetting, poor levelling, flooding and floating of pigments, defoaming issues and loss of adhesion? Legal limitations minimize the choice of solutions to overcome all these challenges. The presentation will show possibilities and options in such a very limited environment. Established additive solutions will be shown in an overview, with a focus on new product developments like a new wax additive to improve scratch resistance and an adhesion promoter for metal substrates which meets food contact requirements.
|
| |
| |
Low odor/low extractable energy curable acrylates for food packaging applications
Paul Gevaert, Cytec Surface Specialities, Belgium
UV and EB technologies have already made significant inroads into non food applications due to the numerous advantages which they provide over other technologies (e.g. high gloss, excellent resistance properties, high printing speed, fast drying or cure times, no VOC, low system cost).
Penetration of these technologies into food packaging applications, however, is limited. Constraints which are usually quoted are odor and taste transfer, migration of existing resins and additives, lack of a cost-effective migration testing protocol. To date resin suppliers and ink makers have mainly focused on solving odor issues. The future tightening of the food contact regulations in Europe will force them to consider impurity profiles, migration levels and manufacturing practices more thoroughly.
|
| |
| |
Adressing photoinitiator migration in UV-inks
Dr. Katia Studer, Ciba Speciality Chemicals Inc., Switzerland
Migration of photoinitiators from the packaging into food is definitely a sensitive issue that has to be addressed by optimizing UV-curing processes. This paper reports results on the influence of curing conditions on the extent of photoinitiator migration with special focus on photoinitiator structure, UV-dose and curing atmosphere. The amount of migrating species was evaluated by a specially designed analytical method. UV-dose-indicating inks were used to allow on-line monitoring of the UV-curing process with the objective of minimizing photoinitiator migration. A careful selection of the formulation components combined to right curing conditions could permit the production of high-quality packaging at viable cost.
|
| |
| SESSION II: Facing the legislation |
| |
No reserve for packaging coatings in food contact
Hubert Culik, Rembrandtin Lack, Austria
We are going to present:
- Development of packaging coatings in the field of rigid packaging concerning food contact.
- Production requirements to comply with legal requirements in the sector food contact.
- Problems and methods of resolution as well as experiences in formulation.
- New development and future trends.
|
| |
| |
Biopolymers as barrier coatings for paper and boards
Dr. Claudia Schönweitz, Fraunhofer Institut für Verfahrenstechnik und Verpackung, Germany
|
| |
| >>Top |
| FRIDAY, 13 June 2008 |
| |
| |
Plasma polymerised layers for anti-fogging and barrier properties in food contact
Prof. Dr. Eva-Maria Moser, Incoat GmbH, Geneva School of Engineering, Switzerland
Surprising effects can be achieved if a material or the deposited layer on its surface is nano functionalized. In many cases, thin plasma polymerized coatings serve as a protection such as hindering the diffusion or the migration of gases, water vapour or small substances across or out of the packaging, respectively. Selective and effective permeation properties are obtained by encapsulating nano particles into the sustainable plasma polymerized matrix and by combining with structure effects. In addition, the wettability properties of the packaging surface and as a result, the direct contact with its content can be optimized to a large extent.
Our plasma deposition processes are developed to work at ambient temperature, so called "soft" conditions, an important restriction for temperature sensitive materials. Plasma polymerrized deposition processes are known to be environmentally harmless since the process gases are consumed for the production of the coatings in a closed chamber system or exhausted off by the pumping system. Consequently, the safe production of nano features is enabled according to sustainable material management.
Novel plasma coating systems such as durable anti-fogging layers with a water contact angle of about 6° and nano featured diffusion barrier coatings with tailored properties will be presented. Since the conventional plasma polymerized layers, such as the diamond like carbon coatings - serving nowadays as diffusion barrier layer - already exists, the manufacturing of our coating systems using web coaters up to several meters of width or batch systems is straight forward.
|
| |
| |
Bioswitch: Release on demand for food packages
Ted Slaghek, TNO Science and Technology, The Netherlands
In literature countless examples of delivery systems for controlled release or slow release have been described. However when delivery should be targeted or an active ingredient should be released only when it is necessary then most of these systems do not qualify.
The general concept of BioSwitch is based on the development of surfaces which are able to respond to an external stimulus and is able to react automatically. For instance the external stimulus may be a change in temperature, pH, ionic strength, and metabolites such as enzymes. The stimulus will subsequently trigger a response in order to neutralize the change is detected. The delivery system is built up using natural polymers such as polysaccharides and proteins, which are cross linked into a three dimensional network. Typical polysaccharides that have been used are starch (and derivatives both positive charged via quaternairy ammonium groups linked onto the polysaccharide back bone or negatively charged via carboxylic acids obtained via oxidation or carboxymethylation), carboxy methyl cellulose, and pectin. In the case of proteins soy and gelatin are used. Once the cage is formed it is possible to entrap active ingredients such as biocides inside the cage, which act against certain groups of micro organisms. These micro organisms will recognize the outside of the cage as a source of food. Subsequently the micro organisms will excrete enzymes which hydrolyse the biopolymers resulting in release of the biocide. The system can be compared to a Trojan horse.
|
| |
| |
MIGRESIVES - Research programme on migration from adhesives in food packaging materials in support of European legislation and standardisation
Angela Störmer, Fraunhofer Institute for Process Engineering and Packaging
Most food packages and food contact materials (FCMs) are manufactured using adhesives. The EU regulates FCMs, as their constituents may contaminate food and endanger consumer’s health. In contrary to plastics which are regulated by positive lists of authorised ingredients, adhesives have not yet a specific regulation. The project wants to elaborate a scientific global risk assessment approach to meet current general EU regulatory requirements and as a basis for future specific EU legislation and to provide SME industry a tool to ensure safety of their adhesives in food packaging applications.
|
| |
| |
Offset printing inks for food packages
Dr. Hans-Peter Seyer, Flint Group, Germany
In contrary to the situation with flexible packaging, the number of regulations valid for paper and board packaging is relatively small. There are two regulations which have to be followed: 1935/2004 and 2023/2006.
To comply to these regulations it is necessary to make a comprehensive risk assessment evaluation of both the packaging and the packaged product as well as there interaction.
It is essential to divide the packaging and products into classes ranging from no sensory and migration risk through to high sensory and migration risk. Depending on the risk assessment, the best combination of packaging criterion and inks can be chosen.
In this presentation three different classes of packaging are identified and recommendations for the appropriate process conditions, inks and coatings are given.
|
| |
| |
Printed oxygen indicators for food packages
Thea Sipiläinen-Malm, VTT, Finnland
There is a distinct need for specific means giving information on the actual product quality in food packages. Intelligent packaging systems attached as labels, incorporated into a packaging material, or printed onto a food packaging material have been presented to offer enhanced possibilities to monitor the product quality throughout the supply chain. As many products today are packed in oxygen-free atmosphere, oxygen sensitive sensors attached inside the package can be used to show whether the package has been damaged or opened/tampered. VTT has developed a number of low-cost indicator technologies for food and medical industries. The new developments on printable indicators will be presented with emphasis on the ink formulation, the printing techniques, and the indicator performance.
|
| >>Top |
|
|
|
|
|
