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Wood flour is finely pulverized wood that has a consistency fairly equal to sand, but can vary considerably, with particles ranging in size from a fine powder to roughly the size of a grain of rice. Most wood flour manufacturers are able to create batches of wood flour that have the same consistency throughout. All high quality wood flour is made from hardwoods because of its durability and strength. Very low grade wood flour is occasionally made from sapless softwoods such as pine or fir. Wood flour is commonly used as a filler in thermosetting resins such as Polyoxybenzylmethylenglycolanhydride, also known as Bakelite; and in Linoleum floor coverings. Wood flour is also the main ingredient in wood/plastic composite building products such as decks and roofs. Prior to 1920, wood flour was used as the filler in ¼-inch thick Edison Diamond Discs.

References

1. Edison Diamond Disc information from Tim Gracyk

• Clemons, Craig M.,Caufield, Daniel F. 2005. In: Functional fillers for plastics. Weinheim : Wiley-VCH. pages 249-270.

• Engineered wood
• Wood