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Unique development partnership

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Bridgestone is working with Don Law, which specializes in XJ220s, Group C cars and historic Jaguars, to develop new-generation tires for the XJ220.

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Michelin's new rubber changes shape depending whether it's on the road or the field, in order to increase the contact patch.

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News

SHOW NEWS: VMI introduces FLEXX Belt Maker

At Tire Technology Expo 2013, VMI will reveal its latest FLEXX Belt Maker, a unit that provides the means to produce OE-quality belts, for applications up to UHP tires, in a very flexible and cost effective way. This is done through an extrusion process, rather than calendaring.

The FLEXX Belt Maker may be considered as a means to increase belt production capacity in smaller, economic steps, without having to invest in another high capacity and inflexible calendar line with associated cutters. According to the simulation calculation of VMI’s experts, FLEXX belt making is always more economical than any alternative way of belt making.

The belt maker is a unique fusion of the latest breakthroughs in cutting and feeding technology, high-speed vision systems and extruder-gearpump technology. An extremely high level of splice accuracy is achieved with a modern servo driven magnetic placement conveyor, combined with state of the art vision technology for control over the high accuracy splice. The use of VMI’s own gear pump extruder technology ensures both dimensionally stable and accurate strip as well as high volume low temperature extrusion at the high pressures necessary for high-quality strip.

In the ‘in-line’ FLEXX systems for car tire belts, two reinforced strips of 30mm width are extruded at the same time through the same extruder-gearpump head, to produce the two belts required for radial passenger tires. The belts of varying length and width are produced within the tire building cycle time and applied to the tire-building drum.

This technology has now been adopted and refined for endless 'off-line' production of car tire belt material, where high levels of output are achieved by extruding a single reinforced strip of 250 to 300mm wide.

VMI Group is exhibiting on stand number 2065 at the Tire Technology Expo in Cologne, Germany February 5-7, 2013. 

 


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