Surface for a food preparation device
View Patent ↗A novel dense PTFE article in the form of a surface for a food preparation device is described in one embodiment, the surface being fabricated from a sheet of PTFE with a thermal resistance of 1.3° C. in 2 /W or less and having desirable tensile strength.
1. An article for use in the preparation of cooked food, which article has a surface comprising a densified polytetrafluoroethylene (PTFE) sheet having a density of 2.0 g/cc or more, a tensile strength of at least 8000 psi in two orthogonal directions and a thermal resistance of up to 1.3° C. in 2 /W, wherein said article has a surface thickness of up to about 2 mil.
2. The article of claim 1 , wherein the PTFE sheet has a tensile strength of at least 10,000 psi in two orthogonal directions.
3. The article of claim 1 , wherein the PTFE sheet has a thermal resistance of up to 1.0° C. in 2 /W.
4. The article of claim 1 , wherein the PTFE sheet has a thermal resistance of up to 0.5° C. in 2 /W.
5. The article of claim 1 , wherein the article comprises metal.
6. The article of claim 5 , wherein the metal comprises at least one metal selected from the group consisting of aluminum and copper.
7. The article of claim 1 , in the form of a grill platen.
8. The article of claim 1 , in the form of cooking belt.
9. The article of claim 1 , in the form of a cooking sheet.
10. The article of claim 1 , wherein the PTFE sheet has a density of 2.1 g/cc or more.
11. The article of claim 1 , wherein said article further includes at least one additive.
12. The article of claim 1 , wherein said article has a surface thickness of up to about 0.5 mil.
13. The article of claim 1 , wherein said article has a surface thickness of up to about 0.2 mil.
14. An article for use in the preparation of cooked food, which article has a surface comprising a densified polytetrafluoroethylene (PTFE) sheet having a thermal resistance of up to 1.3° C. in 2 /W and a tear resistance of 1 lb/mil in at least one direction, wherein said article has a surface thickness of up to about 2 mil.
15. The article of claim 14 , wherein the PTFE sheet has a density of 2.0 g/cc or more.
16. The article of claim 14 , wherein the PTFE sheet has a density of 2.1 g/cc or more.
17. The article of claim 14 , wherein the PTFE sheet has a tensile strength of at least 8000 psi in two orthogonal directions.
18. The article of claim 14 , wherein the PTFE sheet has a tensile strength of at least 10,000 psi in at least one direction.
19. The article of claim 14 , wherein the PTFE sheet has a tensile strength of at least 10,000 psi in two orthogonal directions.
20. The article of claim 14 , wherein the PTFE sheet has a tensile strength of at least 15,000 psi in at least one direction.
21. The article of claim 14 , wherein the PTFE sheet has a tensile strength of at least 24,500 psi in at least one direction.
22. The article of claim 14 , wherein the article comprises metal.
23. The article of claim 22 , wherein the metal comprises at least one metal selected from the group consisting of aluminum and copper.
24. The article of claim 14 , in the form of a grill platen.
25. The article of claim 14 , in the form of cooking belt.
26. The article of claim 14 , in the form of a cooking sheet.
27. The article of claim 14 , wherein said article further includes at least one additive.
28. The article of claim 14 , wherein said article has a surface thickness of up to about 0.5 mil.
29. The article of claim 14 , wherein said article has a surface thickness of up to about 0.2 mil.
30. An article for use in the preparation of cooked food, which article has a surface comprising a densified polytetrafluoroethylene (PTFE) sheet having a thermal resistance of up to 1.3° C. in 2 /W and a tensile strength of at least 8000 psi in two orthogonal directions, wherein said article has a surface thickness of up to about 2 mil.
31. The article of claim 30 , wherein the PTFE sheet has a density of 2.0 g/cc or more.
32. The article of claim 30 , wherein the PTFE sheet has a density of 2.1 g/cc or more.
33. The article of claim 30 , wherein the PTFE sheet has a tensile strength of at least 10,000 psi in two orthogonal directions.
34. The article of claim 30 , wherein the article comprises metal.
35. The article of claim 34 , wherein the metal comprises at least one metal selected from the group consisting of aluminum and copper.
36. The article of claim 30 , in the form of a grill platen.
37. The article of claim 30 , in the form of cooking belt.
38. The article of claim 30 , in the form of a cooking sheet.
39. The article of claim 30 , wherein said article further includes at least one additive.
40. A grill cover sheet adapted for use in the preparation of cooked food, which sheet comprises densified polytetrafluoroethylene (PTFE) sheet having a density of 2.0 g/cc or more, a tensile strength of at least 8000 psi in two orthogonal directions, a thermal resistance of up to 1.3° C. in 2 /W and a tear resistance of 1 lb/mil in at least one direction, wherein said article has a surface thickness of up to about 2 mil.
41. The grill cover sheet of claim 40 , wherein said sheet further comprises at least one attachment component comprising a tunnel.
42. The grill cover sheet of claim 40 , wherein said article further includes at least one additive.
43. An article for use in the preparation of cooked food, which article has a surface comprising a densified polytetrafluoroethylene (PTFE) sheet having a thermal resistance of up to 1.3° C. in 2 /W and a tensile strength of at least 10,000 psi in at least one direction, wherein said article has a surface thickness of up to about 2 mil.
44. The article of claim 43 , wherein the PTFE sheet has a tensile strength of at least 15,000 psi in at least one direction.
45. The article of claim 43 , wherein the PTFE sheet has a tensile strength of at least 24,500 psi in at least one direction.
46. The article of claim 43 , wherein said article further includes at least one additive.
47. The article of claim 43 , wherein said article has a surface thickness of up to about 0.5 mil.
48. The article of claim 43 , wherein said article has a surface thickness of up to about 0.2 mil.
49. An article for use in the preparation of cooked food, which article has a surface comprising a densified polytetrafluoroethylene (PTFE) sheet having a density of 2.0 g/cc or more, a tensile strength of at least 10,000 psi in at least one direction and a thermal resistance of up to 1.3° C. in 2 /W, wherein said article has a surface thickness of up to about 2 mil.
50. The article of claim 49 , wherein the PTFE sheet has a tensile strength of at least 15,000 psi in at least one direction.
51. The article of claim 49 , wherein the PTFE sheet has a thermal resistance of up to 1.0° C. in 2 /W.
52. The article of claim 49 , wherein the PTFE sheet has a thermal resistance of 0.5° C. in 2 /W.
53. The article of claim 49 , wherein the article comprises metal.
54. The article of claim 53 , wherein the metal comprises at least one metal selected from the group consisting of aluminum and copper.
55. The article of claim 49 , in the form of a grill platen.
56. The article of claim 49 , in the form of cooking belt.
57. The article of claim 49 , in the form of a cooking sheet.
58. The article of claim 49 , wherein said article further includes at least one additive.