Know How - Injection Molding

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Published: 11/26/2013

Minimizing Black Specks
Black specks in molded parts are one of the most infuriating problems to resolve on the shop floor. Here's how to fix them.

Published: 10/24/2013

How to Stop Flash
Troubleshooting flash is complicated, and often there is a lot of tail-chasing on the shop floor in trying to get a solution. This approach should lead you to the solution via a data-driven procedure.

Published: 9/23/2013

Don’t Forget the Cold Slug Well
Its primary function—as the name suggests—is to act as a trap, or “well,” for the cold slug.

Published: 8/26/2013

‘Auto Compensate’ Your Press To Handle Viscosity Variations
Here's how to put your injection molding machine on cruise control to make consistently good parts even in the face of material viscosity variations.

Published: 7/29/2013

Level Your Press in an Hour or Less
A level injection molding machine is necessary to keep producing high-quality parts. Here's how to do it right.

Published: 6/24/2013

Pay Attention to Heat Transfer
Money will be lost if cooling is not done right.

Published: 5/28/2013

What's Different About Molding Engineering Plastics
If you try to run them like commodity materials such as PP you'll have problems.

Published: 4/29/2013

Take a Scientific Approach to Troubleshooting
Taking a scientific approach minimizes the 'art' of molding, which is particularly helpful when troubleshooting

Published: 3/25/2013

Screw Decompress Before Screw Rotate
Thoughtfully determining when to start screw rotation to build the charge for the next shot can reduce the wear and tear on the screw tip, check valve, and screw motor.

Published: 2/26/2013

Coping with Weak Weld Lines
Weld lines cause significant reject rates and are a common problem that all molders face.