Extrusion
What to Do When the Bubble Won't Behave
Bubble instability in blown-film extrusion creates problems from fluctuating film gauge and width to scratches and tears.
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Reborn HPM Launches New Injection & Extrusion Machinery
Much has changed in a year for HPM Corp., the 125-year-old Ohio manufacturer of injection, extrusion, and die-casting equipment.
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Automatic Gauge Control: Comparing the Options
Until recently, blown-film processors looking for auto-gauge control had a choice of one segmented-die system, one IBC-based system, and several segmented air rings. Now there are at least nine auto-dies, including two for high-stalk bubbles, and lots of air-ring variations. All claim to improve gauge uniformity, but there are differences.
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Convert PVC Pipe Dies to Make Fence Profiles
If you are a PVC pipe extruder who wants to get into the burgeoning market for fence profiles, you have several new options from American Maplan.
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Cut the 'Chatter' in Window Profile Extrusion
A new class of heat stabilizer and an unusual lubricant are said to allow high-speed extrusion of rigid PVC window profiles without such common problems as "chatter" lines, die plateout, and frictional heat build-up in the calibrator.
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Big German Plant May Relieve U.S. Bottleneck in Recycling Carpet Nylon
An unexpected bottleneck in U.S. nylon recycling could be alleviated by a giant new carpet recycling plant in Germany.
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Boron Nitride Processing Aid Boosts Quality of mLLDPE Film
Compounders and processors of mLLDPE blown film who are looking for improved processability and film quality at comparable or even lower total cost may want to take a look at a new family of boron nitride (BN) processing aids.
Read MoreHow to Extrude Copolyester TPE Film
From building construction to medical supplies to food packaging, copolyester thermoplastic elastomers are seeing a resurgence of interest in high-tech films and extrusion coatings that combine low-temperature flexibility, heat resistance, elasticity, permeability to water vapor, and chemical resistance.
Read MoreFoamed Films Find New Niches
Thin polyolefin foams have been made for decades for decorative ribbons, wire wrap, and sleeve-type labels.
Read MoreWhite Mineral Oil A New Way to Lubricate Rigid PVC
Processors of rigid PVC pipe, window profiles, siding, fencing, and doors can save money and speed compound mixing by using a new grade of white mineral oil as an external lubricant in place of the usual paraffin wax.
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