Multiscrew
Polyurethanes 2000: The Clock is Ticking For HCFCs
The polyurethanes industry appears to have entered a new phase in its decade-long struggle to meet approaching deadlines for phasing out HCFC blowing agents in favor of “cleaner” alternatives for rigid foams.
Read MoreNow Molders Make Their Own GMT Sheet
The latest sign of an upsurge of interest in direct long-fiber compounding by molders of reinforced thermoplastics is a technology that allows molders to produce their own glass-mat thermoplastic (GMT) composite sheet.
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Injection Molding Troubleshooter: Common Mistakes in Long-Fiber Molding
As the superior mechanical properties of long-fiber compounds attract growing popularity among OEM designers, an increasing number of injection molders are being introduced to these materials for the first time.
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White Mineral Oil A New Way to Lubricate Rigid PVC
Processors of rigid PVC pipe, window profiles, siding, fencing, and doors can save money and speed compound mixing by using a new grade of white mineral oil as an external lubricant in place of the usual paraffin wax.
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Purified Cellulose Fibers Show Promise In Reinforced Thermoplastics
Purified cellulose fibers could be the next lightweight reinforcements for thermoplastics.
Read MoreNPE 2000 News Wrap-Up: Compounding
Compounding news at NPE included a wealth of new batch and continuous machines to mix in high loadings of wood flour, glass fiber, carbon black, and more exotic fillers.
Read MoreNPE 2000 News Wrap-Up: Extrusion
At this year’s NPE, new processes to put wood flour into plastic were virtually everywhere—several even start with undried flour.
Read MoreNPE Newsfinder: Compounding and Mixing
For the second straight NPE show, the focus in compounding is on twin-screw machines that deliver more speed and torque—thus more output—than ever before. No fewer than six suppliers of twin-screw compounders are showing such machines. There’s something to see in in-line systems as well. And there’s plenty of news in PVC mixers and pelletizing equipment, too.
Read MoreNPE Newsfinder: Extrusion
NPE will show higher outputs of practically everything, as advances in grooved feeds, servo drives, screw torque, mixing screws, dies, and downstream cooling, cutting, and handling make everything run faster.
Read MoreWood Tubes Close-Up
Hollow tubing with a high loading of wood fiber is one of the newest products—and one of the trickiest—in the booming business of wood-filled thermoplastic extrusion.
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