processing tips
A New Way to Mold Better Parts Faster and Easier
A new injection molding process ‘breaks all the rules’ by using low, constant pressure to achieve faster cycles and better-quality parts.
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Tooling: Hot Sprues—Mold a Disk or Not?
Having a hot sprue shut off against the parting line versus intentionally molding a thin disk has been the subject of controversy for many years.
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Extrusion: Understanding Weld Failures
Hard-surfacing failures without evidence of burrs indicate possible weld bond issues.
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Injection Molding: How to Set Barrel Zone Temps
Start by picking a target melt temperature, and double-check data sheets for the resin supplier’s recommendations. Now for the rest...
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A Processor’s Most Important Job, Part 3: Unintended Consequences
Processors are often expected to compensate for ill-advised decisions made earlier in the product-development process. In the case of shrinkage, one of the most common ‘fixes’ is to simply reduce the mold temperature.
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Vacuum Drying Sucks Wasted Time From Process Set-Up
A switch to vacuum drying resulted in a completely revamped process for this custom molder.
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What is Your Extruder Trying to Tell You?
Being in tune with your film extrusion equipment will allow you to identify issues before they start impacting production.
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Follow These Tips to Power Up Your Purging Process
A properly executed purging process can save processors thousands a year in lost production while helping them increase output and avoid scrap. Here’s how to optimize your results.
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Tooling: Tunnel Gates for Processors, Part 2
What you need to know to overcome problems out on the production floor.
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Injection Molding: Melting Amorphous vs. Semi-Crystalline Plastics
Understanding the differences in how each melts is crucial to obtaining melt uniformity.
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