Abstracts of the VKRT meetings of Plastic and Rubber sector      


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  Meeting Abstracts: Select & Consult

Abstract of No Future Without Rubber Technology     2005

Application of rubber slates on baggage handling systems for airports

On baggage handling systems for airports they use carousels. At the upper side of these carousels the rubber slates are mounted. It seems that these rubber slates are simple and made from standard rubber compounds. For 10 years ago (in the last century) it was true but through many reasons and experience it occurs that the requirements increase through the years. For example appearance, flame-retardant and mounting-time of the slates are now much more imortant then in the past. To fulfil all these requirements the customer needs to optimise the design of the rubber slates and the rubber technologist needs to optimise the rubber compound. The results are to produce rubber products with properties according to all requirements, but it is sure that nobody (who is standing in front of the carousel, with these "simple" Rubber Slates, and waiting for their luggage) realize how many technial research and development hours were made to come to such a special rubber product. During this conversation we will summarize the different rubber compound developments and optimising (with there reasons) of last years. Also the production process with there different probelms and optimising will be explained.

Challanges in the processing of silica filled compounds on an industrial scale

The application of silica as a white filler in tread compounds for passenger car tyres has been grown tremendously in the last decade. Tyre performance, such as wet skid, ice and snow properties and rolling resistance, could be improved enormously and justified the problems during the production of silica compounds. During mixing of silica compounds a chemical reaction is taking place. As a matter of fact rheology, tackiness and compound properties depend a lot to the degree of silanisation. The within batch variation of this chemical reaction and batch to batch variation do cause a lot of problems in processing such compounds. The presentation will show the results of a EU sponsored research project, called SATPRO. Especially on the applicability on industrial scale of the results will be focussed. The chemical reaction is influenced by the amount of ethanol in the compound, a side result product of the chemical reaction. It will be shown that the rate of silanisation will be higher if the ethanol concentration in the compound is lower. Practical solutions to take away the ethanol out of a mixer will be discussed during the presentation.

Fabricageproces van het intermediate voor de kleurenprinters

In de lezing wordt ingegaan op het fabricageproces van het intermediate voor de kleurenprinters. In de lezing komen de volgende onderwerpen aan de orde 1] de functie van een intermediate in onze CPS800/900 printers (3 min promotiefilm Oc

Minelco s functionele vulstoffen voor plastics en rubbers

Minelco is een leverancier van customized minerals, die worden gebruikt in vele verschillende industrie

Re-using and recycling of end-of-life tyres: Rubber reclaim and fine rubber powder in truck tread compounds

Retreading is the process whereby selected and inspected worn tyres receive a new tread. The worn tread is buffed off and a new tread is vulcanized onto the casing in a process very similar to the manufacture of a new tyre

The changing outlook for natural rubber

Over the years, economic models developed at the Free University, Amsterdam have been used to project future developments in the Natural Rubber market. While in 1995, world NR production was forecasted to reach levels of 7.5 million tonnes by 2010, present forecast are around 9 million tonnes. Major differences are found in the projections for the production capacity in Thailand and Malaysia. Forecasts for Thailand (for 2010) in particular changed from 1.6 million to 2.6 million tonnes. This paper elaborates on the reasons behind the change in outlook for NR, focussing on the changes in NR production. The higher production levels, notably in Thailand, can be attributed to higher yields of existing area, rather than to larger areas being planted. Economic developments in the major producing countries help to explain this phenomenon. The strong devaluation of the relevant currencies after 1997 improved the profitability of rubber cultivation, whereas opportunities for alternative employment weakened. As the peak of new planting took place in the 1980s, future developments depend crucially on what happens to these cohorts of trees that now reach the age of declining yields and enhanced probability of discarding.

The role of Alcryn MPR in the specialty TPE field for fluid resistance

While the technology and chemistry that go into Alcryn MPR is complex, the benefits are quite simple. A key benefit of Alcryn is it's broad resistance to changes in dimensions and other physical properties on exposure to various fluids This is off course dictated by it's flexible composition and chemistry, which allowed Alcryn MPR still to be present in the market .It's long-lasting performance in many domains is still a challenge for design engineers and appliance manufacturers to find new features and technologies that will give their products a unique property solution behaviour. The data presented in this paper show the required formula precautions and effects of a broad variety of fluids on the properties of different TPE's, and Alcryn MPR in particular! This paper also highlights the influence of alloying polymers to obtain the optimal behaviour in different oils and fuels.