Extrusion
Look Out for Metal-to-Metal Wear
Wear that occurs as a result of metal-to-metal contact in extruders is quite common.
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Entrepreneur Puts Mixed-Polymer Recycling On Track to Success
Polywood Inc. in Edison, N.J., uses mixed recycled plastics to make fiber-reinforced structural profiles for railroad ties, I-beams, and decks.
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International Manufacturing Alliances Expand Processors' Reach
Processors looking to expand their 大象传媒 overseas or across the border into Mexico have several alternatives.
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Melt Fracture or Interfacial Instability? Different Ills Needs Different Cures
In blown film, clarity is often considered synonymous with quality.
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Close-Up On Technology - Interchangeable Dam Adds Versatility to Screw
A new barrier screw has removable keys to change the dam height, allowing the screw to be tuned for highest throughput with resins as different as LLDPE and nylon, says the screw’s designer, Robert Dray, president of R.
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A Family Film Business Goes High-Tech
Papa, as Norman Rabenstein is fondly called on the shop floor, brought his family up to make plastic film.
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How to Compare Barrier Screws
When processors asked screw designer Robert Dray how to compare different types of barrier screws, he modeled melting capacity based on the biggest single factor, solids channel area. It gives a quick way to evaluate barrier-screw designs.
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New Pressure Transducer For Food & Medical Extrusion
Processors of extruded products for food or medical applications have a new option in pressure transducers that gives improved performance at competitive cost.
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How United Plastics Became A Quick-Change Artist
United Plastics Corp., a small profile and sheet extruder with 125 employees in Mount Airy, N.C., combines an almost unbelievably diverse product mix (it has some 5000 dies in active use) with the ability to change over individual extrusion lines four or five times a day.
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Thermoforming Carves New Role in Decorating Wood
Membrane pressing—a process widely used by the lumber industry to decorate shaped wooden cores with a plastic surfacing material—deserves the attention of U.S. thermoformers.
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