Long-Fiber Compounds Now Cost Less.
A new family of reinforced thermoplastics called Advanced Fiber Compounds (ADF) reportedly combines the processing ease and lower cost of short-glass compounds with structural properties similar to those of long-fiber reinforced thermoplastics (LFRT). ADF comes from RTP Co., Winona, Minn. Because it is made by a proprietary, modified extrusion compounding process rather than melt pultrusion, ADF products do not infringe an LNP patent and thus are not legally limited in fiber content, RTP says. ADF fiber length reportedly can be the same as in LFRT--typically up to 0.5 in. Cost is around 20% less than LFRT.