Hurds are made up of a brittle exterior and a soft in texture interior and makes up 70% of the hemp stalk.  Hurds are rich in cellulose, highly absorbent, and a low generator of dust. Hemp hurds possess measurable thermal and acoustical properties along with fire retardant capabilities.  Hemp's woody core fibers are short -about 0.55 mm - and, similar to hardwood fibers, are naturally combined with organic lignin. After retting, the woody core can be broken-down into varying sized smaller pieces that can be separated from the fibers by SDMS processing line to custom fit your orders requirements.