Extrusion
Smaller Screws Impose Bigger Challenges
Very small extruder screws work just about like their larger cousins, but some critical differences make them harder to design and machine.
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How to Estimate and Control Head Pressure
You rightfully worry about melt temperature, but don’t overlook head pressure, because the two are closely linked and will influence line performance.
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OMV Names Banach V.P. Sales, Marketing
Banach to manage global equipment sales effort, help establish North American service and training networks, and help in development and introduction of company’s thermoforming and extrusion product lines.
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Air Ring Add-On Brings Output to New Level
The Short Stack from Addex sits between the air ring and die and provides high-velocity air flow to boost output and lock in the bubble.
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Specialty Purging Compounds Optimize Color and Material Changeovers
Selecting of the correct purging compound can speed up material and color changeover time and reduce scrap. You’ll even save on material.
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Dual-Lip Air Ring Simplifies Auto-Profiling
New unit from D.R. Joseph reportedly easier to install, operate, modify and maintain than other auto-gauge control air rings on the market.
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Davis-Standard Appoints New V.P. for Canadian Businesses
Mike Brown responsible for executing the business operating plan, strategy and performance initiatives for Toronto-based subsidiaries Brampton Engineering, Deacro, and Gamma.
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Cooling the Feed Throat and Screw: How Much Water Do You Need?
It’s one of the biggest quandaries in extrusion, as there is little or nothing published to give operators some guidance. So let’s try to shed some light on this trial-and-error process.
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Belling Machine Forms 'Rieber' Socket in PVC-O Pipe
Italy’s SICA has developed an innovative Rieber belling process specific for PVC-O pipes. At the same operating pressure, these pipes require a wall thickness of about 35-40% less than those in conventional PVC pipe and allow the construction of water supply pipes up to 25 bar of operating pressure.
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Formulating LLDPE/LDPE Blends For Abuse–Resistant Blown Film
A new study shows how the type and amount of LDPE in blends with LLDPE affect the processing and strength/toughness properties of blown film. Data are shown for both LDPE-rich and LLDPE-rich blends.
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