Method for manufacturing plastic-substitute goods by using natural materials
US6537474B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 6, 2000 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Jun 11, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L97/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for manufacturing plastic-substitute goods by using natural materials is disclosed. Agricultural byproducts and wood byproducts such as rice husks, rice plant stems, corn plant stems, bean plant stems, wheat plant stems, saw dust and the like are crushed into a particular size, then the crushed particles are mixed with natural adhesives (such as corn starch, potato starch and the like), and are coated with rosin or natural resins, and then a molding is carried out by applying a pressure in a molding machine, thereby manufacturing the plastic-substitute goods. The raw materials of the present invention are readily available from the rural areas, and the molding is carried out at a temperature of 100-300 degrees C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.