Improved optics and toughness for VLDPE

Three new grades of Sclair very low density polyethylene introduced by NOVA Chemicals demonstrate improved performance in optics, toughness and percentage shrink. They meet FDA requirements for food contact and cook-in film applications.

The resins also exhibit extremely high dart impact resistance and very good puncture resistance.

The exceptionally low seal initiation temperature of the 0.906 density VLDPE resin provides production benefits for sealant film applications.

NOVA Chemicals Corp.

888/750-4002

PPS for connectors molds faster

Fortron 8670A61 linear polyphenylene sulfide is a new PPS molding compound offered by Ticona for advanced, high-density, fibre optic connectors. It offers better flow, faster molding cycles and superior dimensional stability versus competing thermoplastics and thermosets.

Customer trials show that Fortron 8670A61 PPS molds up to 30 percent faster than amorphous engineering plastics, such as polyethersulfone (PES) and polyetherimide (PEI), and up to 40 percent faster than thermosets.

Its flowability allows for more intricate designs, with features as fine as 125 microns, and runners that are reduced by more than 50 percent compared with more viscous resins.

Ticona 908/598-4139

Film additives move into other extruded products

Dyneon’s Dynamar Polymer Processing Additives (PPAs), which have traditionally played a key role in polyolefin blown film applications, are now breaking into non-traditional markets including wire and cable insulation and jacketing, extrusion blow molding, pipe and tubing, and other extrusion processes.

With second-generation, multi-purpose PPAs, Dyneon is better able to serve these new markets. Dynamar PPAs are used at far lower levels than conventional processing waxes such as hydrocarbon waxes to help eliminate or significantly reduce problems such as melt fracture, die head wear and die build-up.

Dyneon LLC 651/737-6700

New colors for conduit

Ampacet has developed a full line of cost- effective color concentrates with lightfast pigments suitable for communications conduit. The colors are suitable for buried or aerial applications, are stable for extended periods above ground and demonstrate chemical resistance when buried.

The colors are super concentrated, designed for a let-down ratio of one percent in 125 mil thick HDPE pipe or conduit. An identical color line with a boosted UV inhibitor package is available for coextrusion of a thinner skin layer of color for long-term outdoor stability.

Ampacet Canada Co. 800/265-6711