sustainability
Energy Prices Restrain Plastics' Recovery
In recent weeks, prices for crude oil and natural gas have risen to levels last seen just prior to the war in Iraq.
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Garbage In, Good Plastics Out
Experts consider it the most high-tech recycling plant in the world: Schwarzataler Kunststoff in Germany takes dirty bottles and film from post-consumer recycling and turns them into automotive and other compounds in a fully automated process.
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New Granulators Galore at NPE
Processors with scrap to grind must have noticed the prominence of screenless granulators with distinctive hooked “S-rotor” blades at the NPE show in Chicago.
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‘Dry Cleaning’ Process Recycles Contaminated Film Without Water
Cleaning contaminated plastic film with water only transfers the contamination from the film to the water.
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Coinjection's New Look: Two Screws, One Barrel By Mikell Knights
Coinjection molding has always been viewed as a cost-saving technique that can put a lower cost material such as off-spec, recycled, unpigmented, or foamed resin into the core of a two-material sandwich. Coinjection also aids a molder looking to make value-added products such as soft-touch parts or ones with a cosmetic surface over a glass-reinforced core.
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New Ways to Salvage Plastic Waste
European plants are the first to use several new technologies for solvent-based recovery of PVC wire coatings, centrifugal recycling of post-consumer nylon carpet, and mechanical separation of multi-material flakes.
Read MoreEquipment Solutions Incorporate Recycled Plastics into Wood and Fiberglass Composite Materials
New systems to process mixed plastic waste and to upgrade it with fiberglass or wood flour were prominent at last June’s show in Chicago. Single-shaft rotary grinders made a strong showing as newer alternatives to conventional granulators and shredders.
Read MoreBlow Molding
The latest introductions in extrusion blow molding focused on faster color changeovers, higher bottle production, and integration with form-and-fill operations. In PET stretch-blow equipment, new models showed enhanced capabilities, such as making a 90-liter container from 100% recycled PET, molding PET jars and bottles on a standard injection-blow press, and stretch-blowing a wider range of resins. There was also news in downstream deflashing technology.
Read MoreNPE Offered Extensive Line-Up Of New Granulators & Shredders
While most of the new granulators shown at NPE 2000 last month were beside-the-press models, there was also an accent on larger units with an appetite for tough hunks of large-diameter PVC pipe, bundles of textile fibers, and wads of molten bottle flash. Many are configured for “difficult” resins from engineering types to soft TP elastomers.
Read MoreMachinery News Aplenty At Interplas Show in England
Interplas 99 in Birmingham held news in injection molding, extrusion, blow molding, RIM, and recycling.
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