IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0934704
(2007-11-02)
|
| 등록번호 |
US-8535591
(2013-09-17)
|
|
발명자
/ 주소 |
- Woerdeman, Dara L.
- Joyce, Peter J.
- Joyce, John E.
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 |
피인용 횟수 :
0 인용 특허 :
28 |
초록
▼
A process for making biodegradable articles is presented. The process comprises providing a biodegradable material. A molding assembly comprising a mold and a carrier for affixing the mold to a centrifuge is provided. The biodegradable material is inserted into the mold and the mold subjected to a c
A process for making biodegradable articles is presented. The process comprises providing a biodegradable material. A molding assembly comprising a mold and a carrier for affixing the mold to a centrifuge is provided. The biodegradable material is inserted into the mold and the mold subjected to a centrifugal force wherein solvent is separated from the biodegradable material and the shaped article is formed.
대표청구항
▼
1. A process for making solid biodegradable articles, the process consisting essentially of: a) providing a solvent-containing, cohesive, deformable, biodegradable material comprising at least 10% by weight of water, but no more than 70% by weight of water, said solvent-containing, cohesive, deforma
1. A process for making solid biodegradable articles, the process consisting essentially of: a) providing a solvent-containing, cohesive, deformable, biodegradable material comprising at least 10% by weight of water, but no more than 70% by weight of water, said solvent-containing, cohesive, deformable, biodegradable material prepared by mixing a solvent and a protein-based biodegradable material to form a material that is flexible and capable of yielding to various forces;b) providing at least one molding assembly consisting essentially of a mold and a carrier for affixing the mold to a centrifuge;c) inserting the solvent-containing, cohesive, deformable, biodegradable material into the mold;d) subjecting the molding assembly having the solvent-containing, cohesive, deformable, biodegradable material inserted into the mold to a centrifugal force wherein the centrifugal force causes the solvent to escape from the solvent-containing, cohesive, deformable, biodegradable material and wherein a solid, densified, three dimensional, complex-shaped, article is formed within the mold;wherein the mold has a means for allowing solvent to escape. 2. A process according to claim 1, wherein the protein-based material comprises a wheat gluten-based material. 3. A process according to claim 1, wherein the protein-based material comprises a corn zein-based material. 4. A process according to claim 1, wherein the protein-based material comprises a soy protein-based material. 5. A process according to claim 1, wherein the protein-based material comprises a keratin protein-based material. 6. A process according to claim 1, wherein the mold is affixed to the centrifuge by a horizontal swinging bucket rotor. 7. A process according to claim 1, wherein the means for allowing solvent to escape comprises at least one opening in the mold. 8. A process according to claim 1, wherein the mold is a one-sided mold. 9. A process according to claim 1, wherein the mold is a porous mold. 10. A process according to claim 1, wherein the means for allowing the solvent to escape comprises an insert for drawing solvent away from the material. 11. A process according to claim 1, further consisting essentially of introducing a gas into the centrifuge wherein solvent is evaporated from the solvent-containing, cohesive, deformable, biodegradable material. 12. A process according to claim 1, further consisting of applying a mechanical force to the mold in addition to the centrifugal force in a simultaneous or alternating fashion. 13. A process according to claim 1, further consisting of exposing the mold having the solvent-containing, cohesive, deformable, biodegradable material disposed therein to the centrifugal force in a controlled temperature, pressure and humidity environment. 14. A process according to claim 13, wherein the temperature, pressure and humidity are varied on a pre-determined cycle while the mold having the solvent-containing, cohesive, deformable, biodegradable material disposed therein is subjected to the centrifugal force. 15. A process according to claim 1, further consisting of exposing the mold having the solvent-containing, cohesive, deformable, biodegradable material disposed therein to microwave energy under vacuum. 16. A process according to claim 1, wherein the solvent-containing, cohesive, deformable, biodegradable material conforms to the shape of the mold.
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