Compositions and methods for use in three dimensional model printing

• US 20020016386A1
• Filed: 03/05/2001
• Published: 02/07/2002
• Est. Priority Date: 03/13/2000
• Status: Abandoned Application

• Current Assignee: Objet Geometries
• Original Assignee: Objet Geometries
• Inventors: Napadensky, Eduardo
• Application Number:
  US09/797,869
• Publication Number:
  US 20020016386A1
• Time in Patent Office: Days
• US Class Current: 523/201
• CPC Class Codes: B29C 64/112 using individual droplets, e.g. from jetting heads
• CPC Class Codes: B29C 64/40 Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
• CPC Class Codes: B33Y 70/00 Materials specially adapted for additive manufacturing

Abstract

Compositions for use in the manufacture of 3-D objects including compositions for use as a support and/or release material in the manufacture of said 3-D objects are provided. A composition for use in the manufacture of 3-D objects by a method of selective dispensing. The composition comprises at least one reactive component, at least one photo-initiator, a surface-active agent and a stabilizer.

Claims

1. A composition for use in the manufacture of three-dimensional objects by a method of selective dispensing, said composition comprising:

at least one reactive component;

at least one photo-initiator;

a surface-active agent; and

a stabilizer;

wherein said composition has a first viscosity above 50 cps at room temperature, and a second viscosity compatible with ink-jet printers at a second temperature, wherein said second temperature is higher than room temperature.

2. The composition according to claim 1, wherein said reactive component is an acrylic component, a molecule having one or more epoxy substituents, a molecule having one or more vinyl ether substituents, vinylcaprolactam, vinylpyrolidone, or any combination thereof.

3. The composition according to claim 1, wherein said reactive component is an acrylic component.

4. The composition according to claim 3, wherein said acrylic component is an acrylic monomer, an acrylic oligomer, an acrylic crosslinker, or any combination thereof.

5. The composition according to claim 3, wherein said reactive component further comprises a molecule having one or more epoxy substitutents, a molecule having one or more vinyl ether substituents, vinylcaprolactam, vinylpyrolidone, or any combination thereof.

6. The composition according to claim 3, further comprising vinylcaprolactam.

7. The composition according to claim 1, wherein said reactive component is a molecule having one or more vinyl ether substituents.

8. The composition according to claim 1, wherein said reactive component is a molecule having one or more epoxy substituents.

9. The composition according to claim 8, wherein said reactive component further comprises a molecule having one or more vinyl ether substituents.

10. The composition according to claim 1, wherein said photo-initiator is a free radical photo-initiator, a cationic photo-initiator, or any combination thereof.

11. The composition according to claim 1, further comprising at least one pigment and at least one dispersant.

12. The composition according to claim 11, wherein said pigment is a white pigment, an organic pigment, or a combination thereof.

13. The composition according to claim 11, further comprising a dye.

14. The composition according to claim 1, wherein said first viscosity is greater than 80 cps.

15. The composition according to claim 1, wherein said first viscosity is about 300 cps.

16. The composition according to claim 1, wherein said second viscosity is lower than 20 cps and wherein said second temperature is higher than 60 C.

17. The composition according to claim 1, wherein said second viscosity is between 8 and 15 cps and wherein said second temperature is higher than 60 C.

18. The composition according to claim 1, wherein said second viscosity is 11 cps and wherein said second temperature is about 85 C.

20. The composition according to claim 19, further comprising at least one reactive component and at least one photo-initiator.

21. The composition according to claim 20, wherein said reactive component is at least one of an acrylic component, a molecule having one or more vinyl ether substituents, or a water soluble component which is capable of swelling upon exposure to water or to an alkaline or acidic water solution.

22. The composition according to claim 20, wherein said reactive component is an acrylic component.

23. The composition according to claim 22, wherein the acrylic component is an acrylic monomer, an acrylic oligomer, or a combination thereof.

24. The composition according to claim 20, wherein said reactive component comprises a water soluble component which is capable of swelling upon exposure to water or to an alkaline or acidic water solution.

25. The composition according to claim 24, wherein said water soluble component is an acrylated urethane oligomer derivative of polyethylene glycol, a partially acrylated polyol oligomer, an acrylated oligomer having hydrophillic substituents, or any combination thereof.

26. The composition according to claim 25, wherein said hydrophilic substituents are acidic substituents, amino substituents, hydroxy substituents, or any combination thereof.

27. The composition according to claim 20, wherein said reactive component comprises a molecule having one or more vinyl ether substituents.

28. The composition according to claim 19, wherein said non-reactive component is polyethylene glycol, methoxypolyethylene glycol, glycerol, ethoxylated polyol, or caprolactone polyol.

29. The composition according to claim 20, wherein said photo-initiator is a free radical photo-initiator, a cationic photo-initiator, or any combination thereof.

30. The composition according to claim 19, wherein said first viscosity is greater than 80 cps.

31. The composition according to claim 19, wherein said first viscosity is about 300 cps.

32. The composition according to claim 19, wherein said second viscosity is lower than 20 cps and wherein said second temperature is higher than 60 C.

33. The composition according to claim 19, wherein said second viscosity is between 8 and 15 cps and wherein said second temperature is higher than 60 C.

34. The composition according to claim 19, wherein said second viscosity is 11 cps and wherein said second temperature is about 85 C.

36. The method according to claim 35, wherein said reactive component of said first interface material is an acrylic component, a molecule having one or more epoxy substituents, a molecule having one or more vinyl ether substituents, vinylpyrolidone, vinylcaprolactam, or any combination thereof.

37. The method according to claim 35, wherein said reactive component of said first interface material is comprised of at least one acrylic component.

38. The method according to claim 37, wherein said acrylic component is an acrylic monomer, an acrylic oligomer, an acrylic crosslinker, or any combination thereof.

39. The method according to claim 37, wherein said reactive component of said first interface material further comprises a molecule having one or more epoxy substituents, a molecule having one or more vinyl ether substituents, vinylcaprolactam, vinylpyrolidone, or any combination thereof.

40. The method according to claim 37, wherein said reactive component of said first interface material further comprises vinylcaprolactam.

41. The method according to claim 35, wherein said reactive component of said first interface material is a molecule having one or more vinyl ether substituents.

42. The method according to claim 35, wherein said reactive component of said first interface material is a molecule having one or more epoxy substituents.

43. The method according to claim 41, wherein said reactive component of said first interface material further comprises a molecule having one or more epoxy substituents.

44. The method according to claim 35, wherein said photo-initiator of said first interface material is a free radical photo-initiator, a cationic photo-initiator or any combination thereof.

45. The method according to claim 35, wherein said first interface material further comprises at least one pigment and at least one dispersant.

46. The method according to claim 45, wherein said pigment is a white pigment, an organic pigment, or a combination thereof.

47. The method according to claim 45, wherein said first interface material further comprises a dye.

48. The method according to claim 35, wherein said second interface material further comprises at least one reactive component and at least one photo-initiator.

49. The method according to claim 48, wherein said reactive component of said second interface material is at least one of an acrylic component, a molecule having one or more vinyl ether substituents, or a water soluble component which is capable of swelling upon exposure to water or to an alkaline or acidic water solution.

50. The method according to claim 48, wherein said reactive component of said second interface material is an acrylic component.

51. The method according to claim 50, wherein said acrylic component is an acrylic monomer, an acrylic oligomer or a combination thereof.

52. The method according to claim 48, wherein said reactive component of said second interface material comprises at least one water soluble component which is capable of swelling upon exposure to water or to an alkaline or acidic water solution.

53. The method according to claim 52, wherein the water-soluble component is an acrylated urethane oligomer derivative of polyethylene glycol, a partially acrylated polyol oligomer, an acrylated oligomer having hydrophillic substituents, or any combination thereof.

54. The method according to claim 53, wherein the hydrophilic substituents are acidic substituents, amino substituents, hydroxy substituents, or any combination thereof.

55. The method according to claim 48, wherein said reactive component of said second interface material comprises a molecule having one or more vinyl ether substituents.

56. The method according to claim 35, wherein said non-reactive component of said second interface material is polyethylene glycol, methoxypolyethylene glycol, glycerol, ethoxylated polyol, or caprolactone polyol.

57. The method according to claim 35, wherein said first interface material and said second interface material have different modulus of elasticity.

58. The method according to claim 57, wherein said first interface material has a higher modulus of elasticity than said second interface material.

59. The method according to claim 35, further comprising the step of combining said first interface material and said second interface material in pre-determined proportions to form a multiplicity of support layers for supporting said object, said support layers having a lower modulus of elasticity than said construction layers.

60. The method according to claim 59, further comprising the step of combining said first interface material and said second interface material in pre-determined proportions to form a multiplicity of release layers for releasing said support layers from said object, said release layers having a lower modulus of elasticity than said construction layers and said support layers.

61. The method according to claim 35, wherein said first interface material and said second interface material each have a first viscosity at room temperature, and a second viscosity compatible with ink-jet printers at a second temperature, which may be the same or different, wherein said second temperature is higher than room temperature.

62. The method according to claim 35, further comprising the step of curing said first interface material.

63. The method according to claim 48, further comprising the step of curing said second interface material.

64. A 3-D object comprised of a core consisting of a multiplicity of construction layers, wherein said construction layers are prepared by combining pre-determined proportions of a first interface material and a second interface material according to claim 35.

65. The object according to claim 64, further comprising a multiplicity of support layers for supporting said core, wherein said support layers are prepared by combining pre-determined proportions of said first interface material and said second interface material.

66. The object according to claim 65, further comprising a multiplicity of releases layer for releasing said support layers from said core, wherein said release layers are positioned between said support layers and said construction layers;

wherein said release layers are prepared by combining pre-determined proportions of said first interface material and said second interface material.

67. The object according to claim 65, wherein said support layers have a lower modulus of elasticity than said construction layers.

68. The object according to claim 65, wherein said release layers have a lower modulus of elasticity than said construction layers and said support layers.

19. A composition for use as a support and/or second interface material in the manufacture of 3-D objects by a method of selective dispensing, said composition comprising:

at least one non-reactive and low toxicity component;

a surface-active agent; and

a stabilizer;

wherein said composition has a first viscosity above 50 cps at room temperature, and a second viscosity compatible with ink-jet printers at a second temperature, wherein said second temperature is higher than room temperature.

35. A method for the preparation of a 3-D object by 3-D printing, said method comprising:

dispensing a first interface material from a printing head, said first interface material comprising;

at least one reactive component;

at least one photo-initiator;

a surface-active agent; and

a stabilizer;

dispensing a second interface material from said printing head, said second interface material comprising;

at least one non-reactive and low toxicity compound

a surface-active agent; and

a stabilizer; and

combining said first interface material and said second interface material in pre-determined proportions to produce a multiplicity of construction layers for forming said 3-D object.