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The “mixing room” has always been the heart of production at Optibelt. With the mixing of basic ingredients – and various additives – the basic properties of the end product are predetermined early in the production process. Their quality decides the quality of the end product. We therefore put great emphasis on buying first-class raw materials.
 
Thanks to the targeted selection of additives and fillers, softeners and antioxidants, a decisive course is set very early on in the production process for the later wear and noise behaviour or the heat and cold resistance.

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Rubber polymers
The essential base for all Optibelt drive solutions. Their selection determines the temperature resistance, drive and noise behaviour of the end product.

Bonding catalysts

Resol influences the adhesion of the rubber compound to other materials.

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Accelerators

Control the curing rate of the vulcanisation process.

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Softeners

Mineral oil-based and synthetic softeners determine cold resistance and noise behaviour.

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Cross-linking agent

Influence the dynamic, mechanical properties.

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Processing aids

Stearic acid is used for the reduction of cylinder adhesion.

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Fillers

Carbon blacks and fibres (particularly cotton, polyester) improve the transverse rigidity.

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Antioxidants

Additives for the prevention of ageing effects and for the improvement of ozone resistance.

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