Multiscrew

sustainability 1 Jun 2004

Solving Gravimetric Blender Problems

Gravimetric blenders offer plastics processors considerable savings.

Recycling 1 Jun 2004

Thermoplastic Polyesters: It's Time to Know Them Better

There’s more to TP polyesters than you think. You may know PET, PBT, and PETG—but what about PCT, PCTG, PCTA, and PTT? If you’re not sure what they are, how their properties compare, and who sells them, we have the answers—and lots of new developments to report.

Resin Conveying 1 May 2004

Cure Feeder Problems in Twin-Screw Compounding

The dilemma for compounders with starve-fed twin-screw extruders is how to keep the formulation constant within the extruder barrel.

Multiscrew 1 May 2004

Recycled PET/PE Alloys Show Promise In Monofilament, Pallets, Pipe

Alloys of polyethylene and recycled PET were the highlight of the annual SPE Global Plastics Environmental Conference (GPEC) in Detroit in February.

Extrusion 1 Apr 2004

They've Been Working on the Railroad

Composite RR ties could finally be on their way to becoming the next big thing in plastic lumber. They are attracting interest from makers of marine pilings, another category of structural wood replacements.

All Electric & Hybrid Machines 31 Mar 2004

Automotive Innovation Trend-Setting Technologies Garner SPE Awards

Paintless in-mold film decorating and carbon-fiber composites are making inroads in appearance and structural parts. Blow molding is finding new interior applications. And long-fiber thermoplastics are cutting weight and cost on the inside and outside of new passenger vehicles.

Engineering Resins 31 Mar 2004

Additive Masterbatches Make Polyolefins Degrade

Two masterbatch suppliers claim to have found effective ways to make polyethylene and polypropylene products degrade like paper or wood while remaining cost-competitive with conventional LDPE or PP.

Engineering Resins 31 Mar 2004

PVDF Latex Foam CompositesProvide High Flame Resistance

A new patent-pending technology developed by AtoFina Chemicals in Philadelphia creates highly flame-resistant foams of polyvinylidene fluoride (PVDF) fluoropolymer without the use of blowing agents or melt processing.