FiberForce 650 is a synthetic macrofiber developed from a specific blend of polypropylene and polyethylene resins that possess unique engineering properties. Defined as a tape or ribbon fiber, FiberForce 650 has a rectangular cross-section and has been mechanically embossed to enhance bonding. The physical dimensions of FiberForce 650 are critical to the performance, as measured by ASTM C1399 and C1609. FiberForce 650 has excellent distribution and finishing properties.