Pipe, Profile & Tubing Extrusion
New Metallocene TP Elastomers Tackle Films, Fibers, TPOs
The Vistamaxx family of propylene-ethylene specialty elastomers recently unveiled by ExxonMobil Chemical (see Your Business In Brief, August 2003) holds promise in a broad range of applications from very soft fabrics and films to very hard TPOs.
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Computer Flow Analysis Helps Develop New Profile Dies Faster
Computational fluid dy namics (CFD), or flow analysis, is routinely applied to dies for cast or blown film.
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NPE News Wrap-Up: Extrusion
Gearless extrusion, cryogenic profile calibration, wireless data communications, and automatic start-up of blown film lines are just a few of the new ways to raise efficiency and output that were highlighted at NPE.
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Plastics a Carpenter Could Love
Jim Rock has tried to put sawdust into plastics off and on for 20 years, long before wood composites became fashionable.
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How to Fix Vent-Flow Problems
Putting one or two vents between the feed throat and die is a good way to remove moisture, trapped air, and other volatiles from melted plastic as it moves through an extruder.
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A Show Full of Surprises For Every Application
It doesn’t matter whether you extrude blown or cast film, sheet, pipe, profiles, or foam—the K 2001 show held something exciting and unexpected that will open your eyes to new possibilities.
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Nanocomposites Broaden Roles in Automotive, Barrier Packaging
Nanocomposites are gradually gaining acceptance in the mainstream of global plastics processing. These polymer compounds, containing relatively low loadings (under 6% by weight) of nanometer-sized mineral particles, are beginning to show up in polypropylene and TPO-based automotive exterior claddings, barrier beer bottles, nylon packaging films, polyethylene pipe and wire/cable coatings, and more.
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Extrusion (K 2001 Preview)
Probably the most intriguing news in extrusion at K 2001 will be a novel way to extrude clear film that differs from standard blown and cast methods.
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Foaming Expands Possibilities for Wood-Fiber Composites
Over a dozen processors already foam wood-fiber composites and an equal number are experimenting with it. Foaming with wood cuts resin cost and weight in half and brings design advantages. But it also requires particular know-how in materials formulation and extrusion hardware.
Read MoreDie Drawing Makes ‘Plastic Steel’From Wood-Filled PP
A developer of new plastics technologies is applying low-temperature die drawing to take advantage of a new raw material: expanded, oriented, wood-filled polypropylene (EOW-PP).
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