Composite product and a process for producing said product
US11370894B2 · kind B2 · utility
1Cited by
3References
36Claims
0Family size
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Key dates
| Filing date | Sep 20, 2016 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Nov 27, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2401/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a method of making a foamed cellulosic fiber-thermoplastic composite article. The method includes the steps of providing a copolymer composition, combining the copolymer composition and cellulosic fibers, applying heat, mixing energy and pressure to form a foamable mixture, and forming the foamable article in a molding or extruding operation. The method is characterized in that at least 10% of the cellulosic fibers have been thermally modified prior to being combined with the copolymer composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.