Technical Track Paper Session
Session chair: Martin Stimpson, Velsciol Chemical Ltd., U.K.

Structural Acrylic for Low Surface-Energy Plastics

Materials such as Polyethylene, Polypropylene, PTFE etc, can be classified

as "Low surface-energy plastics". Structurally bonding Low Surface

Energy (LSE) plastics to each other without pre-treatment was supposed

to be impossible. 3M thought otherwise…

3M launched Scotch-Weld ® DP 8005, a two part acrylic structural plastic

adhesive.

Scotch-Weld ® DP 8005 allows customers to:

® Utilize less costly but increasingly difficult-to-bond plastics.

® Avoid capital-intensive bonding techniques like friction, sonic or vibration

welding.

® Reduce direct and indirect costs associated with pre-treating of plastics

® Produce aesthetically pleasing plastic components without unsightly

bolts and rivets.

® Structurally bond plastic to a variety of other substrates including

metals and wood.

Valérie Juvin, 3M, France

Technical Track Workshop
Session chair: Hermann Onusseit, Henkel KGaA, Germany

Impact of Product Regulations on Adhesives and Raw Materials
Without modern adhesive technology many common products could not be imagined. Especially in the sector of mass production fully auto-mated joining processes allow an efficient and so low-cost production with adhesives. Next to technical demands on the adhesives, work safety, consumer protection and environmental protection are getting more and more important, as well in the development of adhesives as in the processing of adhesives. This trend can also be seen in an increasing number of regulations, whereas next to national laws more and more European regulations are coming into force today. The adhesive industry as well as the raw material industry has to realise such trends fast and has to convert them in accordance with responsible care.
Hermann Onusseit, Henkel KGaA, Germany

Environmental Labels for Products - Light in the Jungle of National Specifications

There are a lot of environmental labels for building products describing their impact on working man or on consumers: EU Flower, Blue Angel, Nordic Swan, M1, EMICODE, MAL code, GISCODE, CRI label, GuT, Greenguard, Toxproof, R phrases, S phrases, and many more.

All these labels have advantages and shortfalls which need to be known before application for license and use. A survey on labels and their significance for adhesives is given from the viewpoint of focus and usefulness. Special emphasis is on how one documentation can be used for several national labels.
Reinhard Oppl, MILJÖ-CHEMIE, Germany

Odour, or rather the absence thereof, is gaining an increasing importance as selection criterion for adhesives. Typical examples in which this topic plays in important role include the hygiene, the building and the automotive industries. All types of adhesive are affected, regardless of whether they are 100% solid systems (reactive or non-reactive), water or solvent-based.

The lecture will cover the following aspects

- The mechanism of odour detection by the human nose

- The nature of substances responsible for odour

- Formulation strategies to prevent irritating odours in adhesives

- Methods of odour detection and evaluation. Present and future (electronic

  nose)

Summary and conclusion

Adhesives with odour are in the most cases not desired. The understanding about the principles of odour developing helps to improve the properties of the adhesives. Selection of odourless or odourfree raw mater-ials, the accurate process control during manufacturing and application and the use of effective stabilisation systems will lead to less problems in the market.

Even if the electronic nose technology will be improved, it will never replace the human nose. The human nose is the instrument of our customers and has to be considered as the "standard" sensor.
Andreas Dobmann, Collano AG, Switzerland

To the top

Webmaster