Wood Flour by American Wood Fibers is a functional filler. It is insoluble in water. Compatible with thermoset resins like melamine's and phenolics for high heat automotive and appliance products. Suitable for use in extrusion, injection molding, compression molding, rotational molding. Also used in the development of wood plastic composites (WPC’s) using polyethylene (PE) and poly-vinyl chloride (PVC) for the building as well as construction market. Wood Flour is available in 10, 20, 40, 60, 80, 100, 120, and 140 mesh sizing.