PP resin for extrusion blown film

Borealis (Nordic Chemical) Group and German Kiefel Extruder Co., Ltd. announced the newly developed PP (Polypropylene) grade Borclear RB707CF at the 2003 Chicago Fair (NPE2003), which broke through the traditional extrusion blown film and cannot use PP. Restricted by the resin, the new grade has excellent optical properties (transparency), good processability, and balanced rigidity/toughness. The goal of the application is to make a sealing layer of a coextruded multilayer film for flexible packaging.
Borealis recently developed the Borclear PP random copolymer product line, which is a new grade specifically for blown film production. At present, most of the PP grades cannot be subjected to extrusion blown film processing because of poor processability and low toughness, especially poor optical performance. The melt flow rate (MFR) of Borclear RB707CF was 1.8g/10min. The actual processing demonstration of this new product was performed on the NPE using the coextrusion blown film device of German Kiefel Extrusion Co., Ltd., indicating that the resin is easy to process and the sealing strength is high. And can be directly connected with the metallocene polyethylene and bonded firmly. Borealis plans to supply US customers directly from Europe. This breakthrough PP new brand.