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Coperion's meltblown PP production concept ready to scale up
Source:Adsale Plastics Network    Editor:JK    Date:29.Jul.2020

Coperion together with the technology licensor Lummus Novolen Technology have demonstrated the wide range of possible applications for the proven Coperion ZSK twin screw extruder series.

 

Within the test series performed in Coperion's test lab at Stuttgart, Germany, various Polypropylene (PP) pellets with very low melt viscosities were successfully produced. This so-called meltblown Polypropylene forms the raw material for the production of nonwovens, which are mainly used as filter media in medical protective masks.


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The concept of high performance production of meltblown PP.


The results obtained from the tests now allow the concept to be easily transferred from laboratory to production scale. Thus, the production of such products on existing and new large-scale extruders, as typically installed in modern PP production sites, becomes possible.

 

The tests are based on the proven ZSK extruder technology with ZS-EG side devolatilization and a screw design tailored exclusively for Novolen.

 

“The combination of a new screw concept for optimum dispersion and very good degassing thanks to ZS-EG technology secures first-class product qualities. This is achieved with outstanding process reliability, regardless of throughput rates and melt viscosity,” said Heiko Hornberger, Head of Team Polyolefins, Process Technology at Coperion

 

“With this process, the licensees of Lummus Novolen Technology are now able to produce these coveted products safely and reliably, without restrictions on the existing product portfolio," added Sebastian Schwarzer, Technology Manager Extrusion at Lummus Novolen Technology.

 

Lummus Novolen Technology makes this new development available to its interested licensees as part of a Process Design Package. The package contains all necessary process parameters and additive recipes. Coperion supplies the machine components for successful implementation.

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