Injection Molding
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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How to Injection Mold Cyclic Olefin Copolymers
This new family of clear engineering thermoplastics made its first big splash in extrusion, but now injection molders are learning how to process these amorphous resins into optical and medical parts.
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Hourly Rates Dipped Again
Mid-year custom injection molders' machine-hour rates dipped 1.3% on average in the second quarter of the year, according to 122 plants responding to our latest semi-annual survey.
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Unscrewing Molds Go Electric
Hydraulics are the usual power source driving unscrewing cores to separate threaded parts from injection tools.
Read MoreFirst Plastics Molders Sign Up For Ford's 'Supplier Park'
A 155-acre lot in the Chicago area, vacant for 40 years, will be converted into the site of the first automotive "supplier park" in the U.S.
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Molding Simulation Gets Easier Than Ever
In the mid-'90s, when Peter Rucinski worked for a plastics resin supplier, he broke his company's record by performing 30 mold simulations in one year.
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Hourly Rates Dipped Again at Midyear
Custom injection molders' machine-hour rates dipped 1.3% on average in the second quarter of the year, according to 122 plants responding to our latest semi-annual survey.
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Secrets of Successful Thin-Wall Molding
Demands to create smaller, lighter parts have made thin-wall molding one of the most sought after capabilities for an injection molder.
Read MoreNew Approach to PET Drying To Debut This Fall at K 2010 Show
An Italian maker of auxiliary equipment has come up with a new system that combines several unusual concepts to make high-volume PET drying faster and more consistent with lower energy use.
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