System and method of extruding a hemp composite board using hemp feedstocks
US12269927B2 · kind B2 · utility
Inventors
Key dates
| Filing date | May 26, 2023 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | May 26, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2497/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for producing environmentally friendly, mono-extruded hemp composite board (EHB) is provided. By using hemp fiber and hemp hurd in combination with virgin and/or recycled binders, the system and method may be used to create preferable substitutes for traditional construction boards. The method generally comprises steps of processing hemp hurd/fiber and injecting said hemp hurd/fiber into an extruder along with a binder. Waste products from other production streams may be added as well to reduce waste/cost of said production streams. The resulting EHB is structurally superior to traditional construction boards largely due to the structural characteristics of dispersed hemp hurd and hemp fiber, their complete encapsulation in a binder material, and their lower hygroscopic properties. Additionally, since the EHB is created using an extruder, a downstream extrusion arrangement may be used to mold the EHB into shapes that are difficult to achieve with traditional construction boards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.