posted April 28, 2004 01:25 PM               

No body seems to want to answer your question. I've waited because I only have limited experience in this area.

These are my best guesses:

All wood+plastic processes have to deal with the issue of moisture in the wood. Flour may be easier to dry and/or process in the extruder.

Fiber is likely to give better physical properties because of the aspect ratio.

Fiber is likely to give a poorer surface finish.

Both may be difficult to mix for different reasons. Fiber need to be wetted, without breaking down the fiber too much in order to keep the physical properties. Flour has a large surface area, and therefore needs a lot of mixing to wet all surfaces.

Both are likely to be difficult to handle and convey.

Both are likely to have problems with scorching in the extruder if processed too hot.

I'm not sure wha the price difference is between them. If it is similar, then it is likely that fiber is the better choice.

Tom C