Polishing stack for the production of 120µm PET film

• Thickness of 120µm and less are possible
• Second design series with mechatronic roll set-on device launched
• Now also available for PP & PS

Within a short period of time, Reifenhauser Cast Sheet Coating has sold more than a dozen sheet extrusion lines provided 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, according to the company.

The new polishing stack allows the rapid changing from one film thickness to another and to produce thin films of 120µm and less, depending on configuration and product parameters. Up to now, minimum film thicknesses of less than 150µm could be realized in the industry only by using special equipment. 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 by a factor of 10 automatically during running production.

Following the success in the high-performance segment, the company has now equipped the next polishing stack series with a mechatronic roll set-on device. The first line provided with a polishing stack of the MIREX-MT-HS design series will already be launched in the first half of 2015 so that the advantages of the fast and reproducible adjustment of the polishing nip can then also be made available to producers of PS and PP film. The first line of this type will be supplied to a European producer of polypropylene cups. Due to the lack of hydraulic systems commonly used in the past, the lines now meet the requirements for installation in clean rooms and thus satisfy the ever
more stringent criteria in the production of food packaging.

Picture: MIREX-MT polishing stack from Reifenhauser Cast Sheet Coating (source: Reifenhauser)