ZOLT Message Board - Msg: 1139532

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Non-Tech : ZOLT

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To: Tulvio Durand who wrote (180)	4/7/1997 11:42:00 AM
From: Jake Heib	of 970

Zoltek has three main products, each representing about a third of the business. He buys acrylic spun fibers from Courtaulds in large 320,000 filament count tows. The first process is a oxidation step which thermally stabilizes the fibers. It is at this point that the fibers can be handled in the automated equipment to make forms for brake production. This fiber sells for less than $5 per pound. The second step is actually a two step carbonization which takes the fiber up to 94% carbon. It is at this stage that carbon fibers have their best structural properties and is the $8 fiber advertised. Zoltek also sells loads of milled and chopped fibers. These can be made from good carbonized fibers or from scrap fibers. Zoltek further high heat treats fibers and advertises these at 99+% purity. Talk of misleading, read the latest 10K. Zolt says that they used the Magyar Viscosa acrylic and made fibers which came back from testing as good. Whsat he didn't say is that these scrapped out on the line, and were then sent through the high temp heat treat process and ended up as milled fibers. Not a totally honest answer and definately designed to mislead. Regards. Jake

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