A new polypropylene impact copolymer reportedly offers high transparency, a wide processing window, and good stiffness for sheet used in form-fi ll-seal (FFS) packaging trays.

A new polypropylene impact copolymer reportedly offers high transparency, a wide processing window, and good stiffness for sheet used in form-fi ll-seal (FFS) packaging trays. Clyrell RC514L from Basell Polyolefi ns, Elkton, Md., is the latest addition to this line of heterophasic copolymers made with the Catalloy process. They are said to be distinguished by an outstanding combination of high transparency, gloss, and impact strength. According to Basell, RC514L is an alternative to more conventional FFS resins such as PS and APET. In comparison tests at a FFS machine manufacturer, RC514L was used as a drop-in alternative on FFS lines with an APET machine confi guration (one sandwich contact heater) and tooling with no plug assist. In test runs of food trays, the new PP allowed 97% of the APET stroke, and re-shrinkage of only about 1%. Haze and gloss values were 10.1% and 127.3% respectively vs. 8.9% and 129.3% for APET. PP trays also weighed 35% less. Tel: (410) 996-1600 . www.basell.com

Basell North America Inc.
2801 Centerville Rd. PO Box 15439
Wilmington, DE 19850-5439
Phone (302) 996-6070 Fax (302) 996-6380