Polishing stack for the production of 120µm PET film

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  • Roll stack technology now also available for PS and PP films
  • Second series with mechatronic roll set-on device launched
  • Replacement of hydraulic allows production under clean room conditions

Within a short period of time, Reifenhauser Cast Sheet Coating has sold more than a dozen sheet extrusion lines with the new MIREX-MT-V polishing stack. Mainly companies operating high-performance lines for the production of PET film are currently investing in this new mechatronic roll set-on system. Now the roll stack technology is also available for the production of PS and PP films.

PET film: Thickness of 120µm and less are possible

The MIREX-MT-V polishing stack allows the rapid changing from one film thickness to another and to produce thin PET films of 120µm and less, depending on configuration and product parameters. Due to the reduction in thickness, producers of blister and display packaging can benefit from essential cost advantages. According to Reifenhauser, producers are able to reduce product changeover times and rejects by about 80%, and digitally adjust the nip more precisely during running production by a factor of 10.

Roll stack technology now also available for PS and PP films

Following the success in the high-performance segment, the company has now equipped the next polishing stack series with the mechatronic roll set-on device.  Due to smaller roll diameters (between 310 and 510 mm) and a vertical roll arrangement, the roll stack is suitable for the production of polystyrene, polypropylene and barrier films with output capacities from 400 kg/h to about 1,200 kg/h. The first extrusion line equipped with the new MIREX-MT-HS polishing stack design was shipped to an European customer. The line featuring a capacity of 800 kg/h will produce 0.4 to 1.6 mm thick PP films in a finished width of up to 850 mm. Due to the fact that the normally used hydraulic roll set-on system was replaced with a mechatronic system in the MIREX-MT-HS polishing stack, the customer is able to produce also under clean room conditions which increasingly important to producers in the food industry.

Rifenhauser Roll Stack

The second series of Reifenhausers’ mechatronic polishing stacks is optimized for the production of polystyrene, polypropylene and barrier films with output capacities from 400 kg/h to about 1,200 kg/h (source: Reifenhauser)

As the mechatronic polishing stacks have been very well received by the market, the company plans in the medium term to equip all future polishing stacks with the new technology.

Main picture: MIREX-MT polishing stack for the production of PET film (source: Reifenhauser)

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