Injection Molding

Think Your Molding Operation Is Productive? Find Out How You Stack Up Against Others

Participate in Plastics Technology’s ”Top Shops” benchmarking survey and gain access to a free customized report measuring your key metrics against the cream of the crop.  
#bestpractices #topshops #editorial

Extrusion Know How

Why Barrel Temperatures Have a Small Effect on Melt Temperature

Extruders are not like ovens. Tweaking barrel-temperature profiles will not influence melt temperature all that much. Here’s why.
#bestpractices #screws


Part 4: Heat Deflection Temperature vs. Dynamic Mechanical Analysis

The presentation of DMA data can sometimes frustrate users and discourage its adoption. Those unfamiliar with DMA should insist on receiving data relevant to the manner in which the part they are developing will be used.
#bestpractices #Elastomers

Injection Know How

The 'Butterfly Effect' in Injection Molding—A Connected Process

In injection molding, a seemingly minor change in a setpoint can have a significant impact on part quality and process robustness and repeatability. That’s why Scientific Molding focuses on process outputs, not setpoints.
#processingtips #scientificmolding #bestpractices

Injection Molding

Part 2: Back to Basics on Mold Venting

Here’s how to get the most out of your stationary mold vents.

Stretch Blow Molding

Solving the Bane of Stretch-Blow Molding: Off-Center Gates

There are many reasons why off-center gates happen, and processors should be aware of all of them to quickly find the ones causing the problem.
#processingtips #bestpractices


Profile Processor Looks Beyond Windows and Doors

Intek Plastics intends to maintain a leadership position in its core fenestration business. At the same time, it’s on a mission to leverage its expertise in materials know-how, engineering, technology and customer collaboration to become a force in other profile extrusion markets as well.
#planttour #bestpractices #technologyinaction

Injection Molding

Mold-Clamping Details for Profit

Taking time to sweat the details of clamping is not much fun, but they do make a difference in a company’s bottom line.
#scientificmolding #bestpractices

Injection Molding

Part 1: Back to Basics on Mold Venting

Here’s what you need to know to improve the quality of your parts and to protect your molds.


Simple Scale-Up Calculations for Melting

You can avoid complicated melting equations when designing or evaluating a screw by using simpler methods that can save time and provide good results.
#bestpractices #screws


Heat Deflection Temperature vs. Dynamic Mechanical Analysis (Part 3)

DMA provides a rich and detailed picture of polymer performance, and it can be challenging to understand all the things that we can and should know about our materials. But the fact that it may be hard does not mean that it should not be attempted.
#bestpractices #Elastomers


Molder Increases Capabilities—But Not Risk—With Flexible Two-Shot Technology

A customer request for multi-material molding presented a market opportunity and potential financial peril: How do you add two-shot without also overextending yourself from an investment perspective?
#bestpractices #processorsedge #technologyinaction

Mold Maintenance

Time to Turn Up the Heat on Your Hot-Runner Maintenance Program

Molders are running more hot-runner manifolds than ever, a trend that’s expected to continue. But once you have them, you need to keep them in shape. Follow these tips to get going.

Injection Know How

What’s With All the Static?

Static buildup on polymers can cause a variety of problems, some rather unpleasant. Yet there’s an inexpensive way to eliminate it, and we have data as proof.

Single-Screw Compounding

Follow These Guidelines to Select the Right Pelletizing System

Which pelletizing system is right for your application? Is the one you’re using today necessarily the right choice for tomorrow? Here’s is an analysis that can help you decide among the three major options.
#processingtips #bestpractices

Molds & Tooling

What You Should Know About Injection Mold Safety Straps

Every mold should have one in order to be safe and OSHA compliant.

Materials Know How

PART 2 Heat Deflection Temperature vs. Dynamic Mechanical Analysis

Here’s a real-world example of a part failure demonstrating why DMA curves have more value than single-point data generated by HDT.  
#bestpractices #Elastomers

Creating Tomorrow’s Workers Today

Plastics processors are increasingly taking matters into their own hands when it comes to bridging the yawning skills gap, drawing a sharpened focus on high schoolers. Could Switzerland’s apprentice system provide a model?
#bestpractices #business

The Top 10 Most-Viewed Plastics Technology Articles of 2018

Sinks, flash, gels, weld lines—many of the most-viewed articles at PTOnline.com in 2018 offered processors advice on how to deal with some of plastics most nettlesome problems.

Plastics Technology’s Most-Viewed Columns of 2018

Here are the expert columns that visitors to PT’s site viewed the most in 2018, covering mold and melt temperatures; shot sizes; barrel capacity; material properties and more.