November’s Most-Viewed Stories
What did visitors to Plastics Technology read in November—the right injection machine for you; controlling and optimizing pack and hold times; resin pricing; polyolefins insights (compounding, density, strain rate); automating pipette production; improving mold cooling and more.
Here are the most-read articles at Plastics Technology in November 2021. Always an eclectic mix, it was a variety of challenges and interests that drew reader interest. Ranging across technologies and article types, PT’s readers sought answers and knowledge touching on various aspects of plastics in the run up to Thanksgiving.
- MATERIALS: Understanding Strain-Rate Sensitivity In Polymers
- Density & Molecular Weight in Polyethylene
- Formulating LLDPE/LDPE Blends For Abuse–Resistant Blown Film
- What to Look for in High-Speed Automation for Pipette Production
- Electric, Hydraulic, or Hybrid? What's the Right Injection Press for You?
- How Does Your Molding Machine Control Pack Pressure?
- How to Optimize Pack & Hold Times for Hot-Runner & Valve-Gated Molds
- PE, PP, PS Prices Heading Down
- Improve The Cooling Performance Of Your Molds
- Improving Twin-Screw Compounding Of Reinforced Polyolefins

Happy Thanksgiving from Plastics Technology!
Photo Credit: Stock Image
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Optimizing Pack & Hold Times for Hot-Runner & Valve-Gated Molds
Using scientific procedures will help you put an end to all that time-consuming trial and error. Part 1 of 2.
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Fundamentals of Polyethylene – Part 6: PE Performance
Don’t assume you know everything there is to know about PE because it’s been around so long. Here is yet another example of how the performance of PE is influenced by molecular weight and density.
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Where and How to Vent Injection Molds: Part 3
Questioning several “rules of thumb” about venting injection molds.