PT ZONE: Injection Molding

New Culture, New Capabilities, New Challenges
Over the last few years, Henkel has not only transformed what its Richmond facility does, but also altered how it operates in terms of culture. More (+)
Two-Shot Molding and Tool Design
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MOST RECENT CONTENT: Injection Molding

Faster Is Not Always Better—Optimize Your Molding Cycle

It is possible for machines to run too fast, so find the sweet spot where maximum output overlaps with good parts.

New Cure for the Headaches of In-Mold Labeling/Decorating

New IML/IMD method combines the best aspects of precut label stacks and labels on a roll with none of their drawbacks.

SPE announces 2016 SPE foundation scholarship award recipients

The Society of Plastics Engineers (SPE) has announced the winners of the 2016 scholarship program administered by SPE Foundation, including 42 scholarships totaling more than $110,000.

More than a Buzzword, ‘Predictive Maintenance’ Is Key to Optimum Machine Utilization

I wrote here recently that this month’s K 2016 show in Dusseldorf (where I and the whole staff of Plastics Technology are headed next week) is evidence that the wave of “Industry 4.0” activity is building toward a crest.

INJECTION & EXTRUSION: New High-Wear Screw Coating

Smaller spherical tungsten carbide particles provide substantially better wear resistance.

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Injection Molding


In injection molding material is fed through a hopper into an extruder, where a reciprocating screw mixes and melts the material then injects it into a mold. Injection molding machines, or presses, are rated by tonnage, which expresses the amount of clamping force that the machine can exert to keep the mold closed during the process. Most polymers can be injection molded. The types of products that are molded are wide and varied, ranging from large automotive parts to tiny gears. Navigate from the Injection Molding Zone to more specific topics on all-electric/hybrid machine technology, liquid-silicone rubber molding, micro-molding and multiu-component molding.

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