MATERIALS: Long Fiber Nylon Composites Offer Enhanced Surface Appearance

PlastiComp's new LFT nylon 6 and 66 composites boast enhanced aesthetics and easier molding.

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A new series of high-flow long fiber reinforced (LFT) nylon 6 and 66 from PlastiComp, Inc., Winona, Minn., are said to simplify the injection molding of LFT components by more easily producing the smooth, fiber-free finish desired on external surfaces.

            The company says it developed the new Velocity series to facilitate easier and quicker molding of high glass or carbon fiber content materials. Standard LFT materials with fiber loading of 50% or above exhibit high viscosity characteristics which can make them problematic to mold, especially in thin-wall sections.

“What was originally a side benefit of improving flow has turned out to be a very desirable attribute of our Velocity long fiber products. As the use of LFT’s progresses from industrial goods and internal structural elements to consumer goods and exposed housings, their appearance and surface finish has become a more important selection criteria,” says business development manager Eric Wollan.  Standard high fiber content materials require higher molding temperatures to obtain a smooth surface, resulting in slower cycle times and higher operating costs. With the Velocity grades, enhanced, fiber-free surfaces reportedly are obtainable at 30-40 F lower processing temperatures. 

Want to find or compare materials data for different resins, grades, or suppliers? Check out Plastic Technology’s Plaspec Global materials database.