US 12,269,953 B2
Monoextruded hemp composite board
John D. Graham, Portland, OR (US); and John J. Bradley, Harlingen, TX (US)
Appl. No. 18/278,450
Filed by John D. Graham, Portland, OR (US); and John J. Bradley, Harlingen, TX (US)
PCT Filed May 26, 2023, PCT No. PCT/US2023/023776
§ 371(c)(1), (2) Date Aug. 23, 2023,
PCT Pub. No. WO2024/049521, PCT Pub. Date Mar. 7, 2024.
Claims priority of provisional application 63/576,428, filed on Feb. 3, 2023.
Claims priority of provisional application 63/403,450, filed on Sep. 2, 2022.
Prior Publication US 2024/0084143 A1, Mar. 14, 2024
Int. Cl. C08L 97/02 (2006.01); C08J 9/00 (2006.01); C08J 9/04 (2006.01)
CPC C08L 97/02 (2013.01) [C08J 9/0061 (2013.01); C08J 9/04 (2013.01); C08J 2201/03 (2013.01); C08J 2397/02 (2013.01); C08J 2423/06 (2013.01); C08J 2423/12 (2013.01); C08J 2477/00 (2013.01); C08L 2203/14 (2013.01); C08L 2205/16 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A mono-extruded hemp composite board (EHB) comprising:
a mixed extrudate comprising a binder material and a hemp feedstock,
wherein said mixed extrudate has been shaped into a rigid composite board,
wherein said rigid composite board comprises a bottom surface, top surface, first edge, second edge, upper edge, and lower edge,
wherein said rigid composite board comprises at least one channel on said bottom surface,
wherein said mixed extrudate of said rigid composite board is of a single layer,
wherein said mixed extrudate comprises at least 8% of a total weight percentage of a hemp feedstock and no more than 50% of said total weight percentage of said hemp feedstock,
wherein components of said hemp feedstock comprise hemp hurd and hemp bast fiber,
wherein said hemp hurd and said hemp bast fiber are separate components of a hemp biomass,
wherein said hemp hurd is separated from said hemp bast fiber prior to creation of said mixed extrudate,
wherein a length of said components of said hemp feedstock is no greater than ⅜ inches,
wherein said mixed extrudate comprises at least 50% of said total weight percentage of said binder material,
wherein said components of said hemp feedstock are substantially encapsulated by said binder material within said mixed extrudate,
wherein said components of said hemp feedstock are evenly dispersed throughout said mixed extrudate,
wherein said binder material comprises at least one of polyolefin, polyethylene, polyamide, and polypropylene, and
wherein said mixed extrudate is substantially oriented in an output direction of an extruder due to a shear force acting on said mixed extrudate as it was ejected from a manifold,
a pipe configured to fit within said at least one channel of said rigid composite board.