View Full Version : EPS (Expandable Polystyrene) Molding and Machine

03-13-2006, 12:05 PM
I am planning on doing some parts in molded EPS (expandable polystyrene). I will be doing the aluminum mold and also I am planning on doing a small molding machine for my parts. I will use these parts for Lost Foam Castings, but if this works, I want to find some costumers for packaging products.
If anyone can give me some pointers, it will be appreciated.

George M.

One of Many
03-13-2006, 01:29 PM
This process usually takes quite a bit of equipment. Between the press, feeders, steam generation etc.

Here is an introduction to the basic process. (http://www.huntsman.com/polymers/Media/EPS1-1.0.pdf) It first goes through how the beads are made, then explains their use in molding.

The dies do need steam vents based on a given cavity volume. Many have water cooling jackets to reduce the cycle times too.