Filler-capable mixhead now accepts scrap foam. (RIM/Urethanes).A specialized mixhead developed for metering fillers has been modified to allow addition of recycled polyurethane foam Noun 1. polyurethane foam - a foam made by adding water to polyurethane plastics polyfoam polyurethan, polyurethane - any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or to new slabstock or rigid molded foams. The FFH FFH Far From Home (band) FFH Fast Frequency Hopping FFH Frigate Helicopter FFH Final Fantasy High (gaming) FFH Fauji Foundation Hospital (Pakistan) FFH Falling for Her (Filler Fed Head) mixhead introduced two years ago by Edge-Sweets, Grand Rapids, Mich., now has a redesigned hopper/feeder that can feed PUR scrap in the form of fine powder or larger pieces directly into the head. The system comprises a metering unit, hopper/feeder, and high-shear dynamic mixer that controls shear rate independently from the metering rate. The FFH was originally developed to handle fillers such as melamine melamine (mĕl`əmēn'), common name for 2,4,6-triamino-1,3,5-triazine. Melamine is a trimer (see polymer) of cyanamide, H2NC≡N, and is synthesized from calcium carbide. for imparting flame retardancy and barium sulfate barium sulfate: see barite. for increasing the density of PUR foams. The newer modifications still allow the system to be used for these purposes. |
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