Materials

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Published: 8/28/2018

Materials: A Processor’s Most Important Job, Part 8
How processing adjustments can control molded-in stress.

Published: 8/1/2018

Materials: A Processor's Most Important Job, Part 7
There are several process-related issues that influence crystallinity besides cooling rate. Let’s examine a few.

Published: 7/31/2018

Get Free Guidance on Molding Resins
Mobile Specs app and website provide processing parameters on thousands of resins … at no cost.

Published: 6/1/2018

Materials: A Processor's Most Important Job, Part 6
The importance of mold temperature to the development of the desired polymer crystalline structure becomes absolutely crucial in the case of high-performance materials.

Published: 6/1/2018

The Pellets Have Returned, Too
Materials suppliers came back to NPE2018 in a big way last month.

Published: 4/27/2018

Materials: A Processor's Most Important Job, Part 5
Using a mold temperature above a polymer’s Tg ensures a degree of crystallinity high enough to provide for dimensional stability, even if the part must be used at elevated temperatures. But POM is an exception. Why?

Published: 3/29/2018

Materials: A Processor’s Most Important Job, Part 4
Engineering polymers require higher mold temperatures to achieve their ideal structure. The temptation to turn down the mold temps can hurt part performance.

Published: 3/1/2018

Materials: A Processor’s Most Important Job, Part 3
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.

Published: 1/23/2018

Materials: A Processor’s Most Important Job, Part 2
Process conditions help determine the difference between the maximum degree of crystallinity that can be achieved in a polymer and the degree that is present in a molded part.

Published: 1/2/2018

Materials: A Processor’s Most Important Job, Part 1
Many processors don’t realize that preserving material characteristics is crucial to product success and failure. The focus here is on molecular weight.