IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0187323
(2002-07-01)
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등록번호 |
US-7314591
(2008-01-01)
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발명자
/ 주소 |
- Priedeman, Jr.,William R.
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
21 인용 특허 :
73 |
초록
▼
A three-dimensional model and its support structure are built by fused deposition modeling techniques, wherein a thermoplastic material containing silicone is used to form the support structure and/or the model. The thermoplastic material containing silicone exhibits good thermal stability, and resi
A three-dimensional model and its support structure are built by fused deposition modeling techniques, wherein a thermoplastic material containing silicone is used to form the support structure and/or the model. The thermoplastic material containing silicone exhibits good thermal stability, and resists build-up in the nozzle of an extrusion head or jetting head of a three-dimensional modeling apparatus. The silicone contained in a support material acts as a release agent to facilitate removal of the support structure from the model after its completion.
대표청구항
▼
The invention claimed is: 1. An additive-process method for building a three-dimensional model comprising: providing a solid feedstock of a first thermoplastic material to at least one extrusion head; melting the solid feedstock of the first thermoplastic material in the at least one extrusion head
The invention claimed is: 1. An additive-process method for building a three-dimensional model comprising: providing a solid feedstock of a first thermoplastic material to at least one extrusion head; melting the solid feedstock of the first thermoplastic material in the at least one extrusion head; depositing layers of the first thermoplastic material from the at least one extrusion head into a heated build chamber to form the three-dimensional model; providing a solid feedstock of a second thermoplastic material to the at least one extrusion head; melting the solid feedstock of the second thermoplastic material in the at least one extrusion head; and depositing layers of the second thermoplastic material into the heated build chamber to form a support structure for the three-dimensional model, wherein the second thermoplastic material contains between about 0.5 and 10 weight percent of a silicone release agent. 2. The method of claim 1, wherein the second thermoplastic material contains less than about 2 weight percent of the silicone release agent. 3. The method of claim 1, wherein the second thermoplastic material contains greater than about 1 weight percent of the silicone release agent. 4. The method of claim 1, wherein the second thermoplastic material further comprises a base polymer selected from the group consisting of polyethersulfones, polyetherimides, polyphenylsulfones, polyphenylenes, polycarbonates, high-impact polystyrenes, polysulfones, polystyrenes, acrylics, amorphous polyamides, polyesters, nylons, PEEK, PEAK and ABS. 5. The method of claim 1, wherein the second thermoplastic material has a heat deflection temperature of greater than about 220�� C. 6. The method of claim 5, wherein the second thermoplastic material has a melt flow in the range of about 5-30 gms/10 mm. under a 1.2 kg load at a temperature of up to 450�� C., and a tensile strength of between about 5,000 psi and 12,000 psi. 7. The method of claim 6, wherein the second thermoplastic material further comprises a base polymer selected from the group consisting of polyethersulfones, polyphenylsulfones and polyetherimides. 8. The method of claim 1, wherein the silicone release agent has a viscosity on the order of about 104-10 centistokes. 9. The method of claim 1, wherein the silicone release agent is hydroxy-terminated polysiloxane. 10. The method of claim 1, wherein the second thermoplastic material has a heat deflection temperature of greater than about 40�� C., a melt flow in the range of about 5-30 gins/10 mm. under a 1.2 kg load at a temperature of up to 450�� C., and a tensile strength of between about 3,000 psi and 12,000 psi. 11. The method of claim 1, wherein the build chamber has a temperature of between about 180�� C. and 250�� C. 12. An additive-process method for building a three-dimensional model and a support structure therefor, the method comprising: feeding a modeling material in a solid state to a deposition modeling system; melting the modeling material in the deposition modeling system; depositing layers of the melted modeling material into a heated build chamber of the deposition modeling system to form the three-dimensional model; feeding a support material in a solid state to the deposition modeling system, wherein the support material comprises a thermoplastic composition containing between about 1-10 weight percent of a silicone release agent; melting the support material in the deposition modeling system; depositing layers of the melted support material into the heated build chamber to form the support structure; and separating the support structure from the three-dimensional object. 13. The method of claim 12, wherein the thermoplastic composition further comprises a base polymer selected from the group consisting of polyethersulfones, polyetherimides, polyphenylsulfones, polyphenylenes, polycarbonates, high-impact polystyrenes, polysulfones, polystyrenes, acrylics, amorphous polyamides, polyesters, nylons, PEEK, PEAK and ABS. 14. The method of claim 12, wherein the support material has a heat deflection temperature of greater than about 220�� C. 15. The method of claim 14, wherein the support material has a melt flow in the range of about 5-30 gins/10 mm. under a 1.2 kg load at a temperature of up to 450�� C., and a tensile strength of between about 5,000 psi and 12,000 psi. 16. The method of claim 15, wherein the thermoplastic composition further comprises a base polymer selected from the group consisting of polyethersulfones, polyphenylsulfones and polyetherimides. 17. The method of claim 13, wherein the base polymer is polyethersulfone and wherein the support material further comprises high-impact polystyrene. 18. The method of claims 16 or 17, wherein the modeling material comprises as a major component a polyphenylsulfone resin. 19. The method of claim 12, wherein the silicone release agent has a viscosity on the order of about 104-105 centistokes. 20. The method of claim 12, wherein the silicone release agent is hydroxy-terminated polysiloxane. 21. The method of claim 12, wherein the support material has a heat deflection temperature of greater than about 40�� C., a melt flow in the range of about 5-30 gms/10 mm. under a 1.2 kg load at a temperature of up to 450�� C., and a tensile strength of between about 3,000 psi and 12,000 psi. 22. The method of claim 12, wherein the build chamber has a temperature of between about 180�� C. and 250�� C. 23. The method of claim 12, wherein the thermoplastic composition further comprises between about 60-99 weight percent polyethersulfone and the modeling material comprises as a major component a polyphenylsulfone resin. 24. The method of claim 12, wherein the thermoplastic composition further comprises between about 90-95 weight percent of a polyethersulfone base polymer, and wherein the modeling material comprises as a major component a polyphenylsulfone resin.
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