New patented pressure roller with imbedded air chamber system

Lüraflex's new patented rollers outstanding features are its effective compressibility and excellent resetting capabilities, which are achieved using an imbedded air chamber. The new construction also has the benefit of enabling the use of different rubber coverings to suit a wide range of applications.

With its imbedded air chamber system, the pressure roller equalises the surface pressure without excessively increasing the web tension. It is used in slitting machines as a contact roller, to more effectively control the problems of variable profile, conical wrapped, or unevenly wound products.

It has also proved to be a solution when a 'wide nip' is required, for example, on rollers for splicing operations or guide rollers. Before the introduction of this new pressure roller, a larger nip was usually achieved by increasing the roll diameter and reducing the rubber hardness. This can cause problems for machine builders and end users as the mechanical properties of the soft rubber coating, not being the optimum, has a negative effect of the life of the roller. Furthermore, the requirement for large rollers increases the investment costs, major modifications may need to be made to the machine, and it may not be possible to fit such large rollers due to the construction of particular machines.

Another winning feature of the pressure rollers is that they can be manufactured with a number of different elastomers according to specific processes and conditions. Lüraflex supplies rollers with coverings including anti-stick, high temperature resistant, non-wearing and covers which are electrically conductive.