Recent content by CRmolding

I think that I am going to move ahead with a compressed-air type drier and modify to run with an inert gas. I can't be real specific using this forum. Again, if there is someone that knows of an of-the-shelf plastic drier that can provide a nitrogen or argon environment I would be interested...

Oxidation is the issue. The molded parts are not exposed to heat.

I have talked to the material supplier and they say that it can and is done. They have data in regard to surface O2 levels. They work with companies that have come up with proprietary methods of removal.

I have developoed a system to flow N2 into the feed throat of the molding machine and monitor the atmosphere in that area. The cavity is also purged of O2 before plastic is injected.

Thanks. I'm not sure that the vacuum system will be practical in continious use. In a batch oven, I think that the N2 atmosphere would be easy. How closed is a "closed-loop" drier? If a standard plastic-pellet desiccant-drier was fed N2, could this system dry and remove surface O2?

We are molding parts that need to be very inert. The Maquire LPD vacuum drier uses air to dry and convey. I need to remove surface O2 as well as moisture. The material is not hygroscopic. My initial thought was to vacuum dry but it becomes complicated because the drying and conveying need to be...

Is there an of-the-shelf solution to drying plastic in an oxygen free environment? This would be used prior to N2 blanketing.