Reactor-modified polypropylene copolymers that flow through molds at unprecedented high speed can lift productivity for the end user, enchance colour, taste and odor properties, and improve part performance, according to the supplier. Target applications include housewares, food packaging, an DVD cases. The Pro-fax ultra range is available in four grades, all nucleated.

Two 100g/10 min melt flow rate grades, Pro-fax Ultra SC973 and SG982, are primarily for thinwall yogurt and dairy product cups, and other food containers. The first contains antistatic and slip additives, and is stiffer.

"The new slate" says Mark Knorr, Montell’s packaging manager "should enable injection molders to stay ahead of thermoformers, trading on their ability to make thinwall containers with high topload strength."

Density is 0.90 g/cm³. Flexural modulus is 1240 MPa; notched Izod impact strength at 23°C is 42.7 j/m. Other features include an easier colour match capability, moderate cold-temperature impact, and excellent gloss.

Pro-fax Ultra SG833 is a 35 MFR grade designed for thinwall frozen dairy containers, as well as housewares and consumer goods in which extra low-temperature toughness is desired. It contains antistatic and slip additives. Features include easier colour match, resistance to dust and dirt pickup, and excellent gloss. These properties suit the material for DVD cases.

Finally, SG853, a 55 MFR material, also antistatic and slip modified, is for electronic cases and thinwall consumer goods.