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Roy, Rigid PVC Compounding - Twin Screw or Banbury/Mill Flexible PVC Compounding - Buss A single will probably work, but the Buss is more versatile. My 2 cents worth, Len

There must be a blockage in the feed area of the screw or in the hopper. When it occurs, does pounding on the hopper correct the problem or do you need to slow down the screw? Put the powder on a melting stage and determine its melt point. If it is less that the feed section temperature, it is likely the powder is the cause of your problem. Reduce the input section of the extruder by 20 ...

Compuplast has developed a software based systematic and semi-automatic method for profile die design that has been used with success. http://compuplast.com/ProfileDieProduct ... tion.shtml A design methodology; "The Cross Flow Minimalization Method" is used to make dies which will operate over a range of output rates. You can contact me for more information.

Can you add an antistatic additive to the material?

Tom, This begs for a take off of Hamelt's Soliloquy "To Be or Not to Be, That is the question" Any body want to take up the gauntlet ?

Plastic laminated film material can be ground and then used back into a compatible material as a filler for bulk type products. I know of no one who is recycling it back into film applications.

What type of die?

Roy, Rigid PVC Compounding - Twin Screw or Banbury/Mill Flexible PVC Compounding - Buss A single will probably work, but the Buss is more versatile. My 2 cents worth, Len