Extrusion
Extrusion: Start Up and Shut Down Properly
A key goal during startup and shutdown of the extruder is to prevent degradation of the polymer left in the extruder and downstream components such as screen changers, adapters, and dies.
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EXTRUSION & COMPOUNDING: Five-Layer Film Structures Set to Supplant Three Layers?
In blown film, equipment and material suppliers have come together to push five-layer technology into non-barrier applications previously held by three-layer films.
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K 2010 Preview, Extrusion More…Layers, Output & Quality
In most segments of extrusion technology, the word at K 2010 is more.
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Boosting Extrusion Productivity-Part II of III: Optimize Product Changeover & Purging
Extrusion processors typically run a number of different products and resins.
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Dryers Use Less Energy to Dry PET
Novatec Inc., Baltimore (novatec.com), is introducing two patented dryer control technologies intended to cut energy costs for processors of PET.
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Solving the Puzzle of Chinese Bags
How do the Chinese get such high quality at such low cost? They have been accused of dumping, but Chinese bag makers are mostly small mom-and-pop businesses that survive on razor-thin profit margins. Their plants and the way they run them are like nothing you’ve ever seen.
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NPE News Wrap-up: Resin Dryers
At least 16 companies introduced new dryers at the big show in Chicago. The new models span a range of drying technologies, but most sport features that save space and cost and make the dryers simpler and more reliable.
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Extrusion: Take Care of Your Rolls So They Can Play Their Role
In the sheet extrusion business, one of your most important manufacturing assets is your cooling rolls.
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Tooling: The Science of Profile Die Balancing
In our last column, we discussed the five things profile extruders need to know about profile die design—proper land length, land-length ratio, drawdown, considerations for sensitive materials, and decompression.
Read MoreTests Show Direct-Drive Extruders Are Quieter, More Energy Efficient
Green machines may be coming to extrusion.
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