Recycling
Graphical Analysis Helps Find and Fix Ultrasonic Welding Problems
Using Real-Time Weld Graphs to Achieve Process Repeatability and Control Limits in Ultrasonic Welding
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Used Car Windshields Are Reborn As Carpet Backing
Two years ago, the Kaiser Permanente hospital chain challenged its two institutional carpet suppliers to come up with a carpet containing no PVC.
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K 2004 Wrap-Up on Recycling & Scrap Reclaim: Turn Trash to Cash with New Compactors, Shredders and Grinders
Topping recycling news at the latest giant K Show in Dusseldorf, Germany, were new compactor technologies for films and foams that can densify plastic waste for recycling and even mold finished parts—not just save space in a landfill.
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Dedusting Turns Risky Regrind Into a Valuable Resource
Custom injection molder Tessy Plastics, Elbridge, N.Y., used to spend around $117,000 every year on resins that it would not use.
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Plastics Welding: Laser and Infrared Systems Expand Capabilities
A breakthrough in laser welding of three-dimensional parts that eliminates traditional clamping systems was among several innovations in welding and joining highlighted at two recent shows—last month’s Plastics USA in Chicago and this month’s K 2004 in Dusseldorf, Germany.
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From Paper-Mill Sludge to Plastic Decking
Kadant Composites’ self-appointed mission for the past eight years has been to find commercial uses for paper sludge, a soggy mix of short cellulose fibers, calcium carbonate, and clay that is the copious byproduct of paper recycling.
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How to Turn Auto Shredder Waste Into 60 Million Lb of Plastic Pellets
While much of the world is studying the possibility of getting any economic value out of auto shredder residue—for example, as fuel for cement kilns or power plants—Europe’s second largest scrap-metal reclaimer cranks out polyolefin and polystyrene pellets made from shredder residue at 20,000 to 100,000 lb/hr, or about 40 million lb/yr.Galloo Plastics, the recycling unit of the Galloo Group in Halluin, France, has been so successful at supplying automotive markets with its black PP compounds that it built a second auto shredder residue (ASR) recycling plant this year next to the first, inside its huge scrap yard.
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Solving Gravimetric Blender Problems
Gravimetric blenders offer plastics processors considerable savings.
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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.
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