Claims
- 1. A container for asphalt, comprising:
a sidewall; a bottom assembled to the sidewall to form the container for holding the asphalt in the container, the bottom thereafter being melted with the asphalt without adversely affecting the asphalt properties.
- 2. A container according to claim 1, wherein said sidewall comprises a cylinder with a pair of open ends and the bottom is attached to a first one of the open ends.
- 3. A container according to claim 2, wherein said bottom comprises a disc having a top surface with an annular flange extending substantially perpendicular thereto, said flange having an interference fit to the open end of the sidewall.
- 4. A container according to claim 3, wherein said annular flange has an interference fit to an interior wall of the open end of the sidewall.
- 5. A container according to claim 3, wherein said bottom comprises a second annular flange extending substantially parallel to the first flange, said open end of the sidewall being inserted between said flanges.
- 6. A container according to claim 3, wherein said bottom comprises a second annular flange extending substantially perpendicular to the disc, substantially concentric with the first annular flange, one of said first and second flanges fitting to an inside surface of the open end of the sidewall, and the second of the flanges fitting to an exterior outside surface of the open end of the sidewall.
- 7. A container according to claim 3, wherein said bottom comprises a second disc having a second annular flange extending substantially perpendicular to the second disc, the first annular flange fitting to an internal surface of the first open end and the second flange fitting to an outside surface of the open end of the sidewall.
- 8. A container according to claim 7, wherein the first disc has a hole provided therein for allowing the asphalt to contact the second disc when the asphalt is poured into the container.
- 9. A container according to claim 1, wherein said sidewall comprises a cylinder with a pair of open ends, a first end having a plurality of notches in the sidewall to form a plurality of tabs, the tabs bent with respect to the sidewall to form a radial flange, and the bottom comprises a pair of discs, one of said discs being assembled to a bottom surface of the radial flange and the second disc being assembled to a top surface of the radial flange.
- 10. A container according to claim 9, wherein the second disc comprises an annular flange for installation to an interior surface of the sidewall at the first end of the sidewall adjacent the radial flange.
- 11. A container according to claim 10, wherein the second disc has a hole formed therein for asphalt to flow therethrough to engage the first disc when pored into the container.
- 12. A container according to claim 11, wherein the first disc comprises an annular flange for installation to an exterior surface of the sidewall at the first end of the sidewall adjacent the radial flange.
- 13. A container according to claim 12, wherein the first disc comprises a second annular flange for engagement with the second disc.
- 14. A container according to claim 3, wherein the asphalt and bottom are placed into a vessel and heated to melt the asphalt and the bottom.
- 15. A container according to claim 14, wherein the sidewall comprise a plurality of perforations formed longitudinally thereon for tearing the sidewall to remove the sidewall from the asphalt.
- 16. A container according to claim 15, further comprising a string provided in the container adjacent the sidewall perforations for tearing the sidewall after the asphalt is poured into the container.
- 17. A container according to claim 16, wherein the sidewall is made from a paper material and discarded prior to melting the asphalt and bottom.
- 18. A container according to claim 2, wherein the sidewall is made from a polymer material.
- 19. A container according to claim 14, further comprising a string provided in the container adjacent the sidewall perforations for tearing the sidewall after the asphalt is poured into the container.
- 20. A container according to claim 1, wherein the asphalt and bottom are placed into a vessel and heated to melt the asphalt and bottom, the molten asphalt normally emitting fumes from the vessel, and the consumable bottom comprises about 0.2 weight percent to about 6 weight percent of a polymer added to the asphalt to reduce the visual opacity of the fumes by at least about 25% with respect to the same asphalt without the consumable bottom.
- 21. A container according to claim 20, wherein the polymer from the bottom forms a skim on the upper surface of the molten asphalt.
- 22. A container according to claim 21, wherein the polymer has a melt flow index of from about 4 grams/10 minutes to about 150 grams/10 minutes.
- 23. A container according to claim 22, wherein the bottom is made from a material comprising from about 0 weight percent to about 80 weight percent of an asphalt and from about 20 weight percent to about 100 weight percent of the polymer.
- 24. A container according to claim 23, wherein both the asphalt without the polymer and the asphalt with the added polymer from the bottom meet the requirements for at least one type of roofing asphalt according to ASTM D312.
- 25. A container according to claim 24, wherein the addition of the polymer to the molten asphalt neither changes the softening point of the asphalt by more than about 9° C. nor changes the penetration of the asphalt by more than about 10 dmm at 25° C.
- 26. A container according to claim 25, wherein the polymer is selected from the group consisting of polypropylene, ethylene-vinyl acetate copolymer having a vinyl acetate content of from about 5 weight percent to about 40 weight percent, ethylene-methyl acrylate copolymers, rubber, and mixtures thereof.
- 27. A container according to claim 19, wherein the asphalt and bottom are placed into a vessel and heated to melt the asphalt and bottom, the molten asphalt normally emitting fumes from the vessel, and the consumable bottom comprises about 0.2 weight percent to about 6 weight percent of a polymer added to the asphalt to reduce the total emissions of benzene soluble suspended particulates by at least about 15% over the same asphalt without the polymer.
- 28. A container according to claim 27, wherein the added polymer from the bottom forms a skim on the upper surface of the molten asphalt.
- 29. A container according to claim 3, wherein said sidewall is melted with the bottom and asphalt without adversely affecting the asphalt properties.
- 30. A container according to claim 2, wherein said bottom comprises a first disc having a top surface and said sidewall comprises a plurality of tabs extending therefrom, a bottom surface of said tabs positioned upon said top surface of said first disc.
- 31. A container according to claim 31, further comprising a second disc having a bottom surface, said bottom surface positioned upon a top surface of said tabs.
- 32. A container according to claim 31, further comprising a flange provided on each of said discs, each of said flanges mutually engaging the other of said flanges to capture said flanges between the discs.
- 33. A method of asphalt production, comprising:
forming a sidewall; forming a consumable bottom; attaching the bottom to the sidewall to form a container; pouring molten asphalt into the container and solidifying the asphalt in the container; and melting the solidified asphalt and bottom to form a molten mixture of the asphalt and bottom.
- 34. A method according to claim 33, further comprising the steps of:
forming a plurality of longitudinal perforations in the sidewall; providing a string in the container adjacent the perforations; pulling the string to tear the sidewall; and removing the sidewall prior to melting the solidified asphalt.
- 35. A method according to claim 33, wherein the container comprises a cylinder having an end closed by the bottom.
- 36. A method according to claim 35, wherein the bottom has a flange with an interference fit to the end of the cylinder.
- 37. A method according to claim 33, wherein the step of melting the asphalt and bottom comprises placing the asphalt and bottom into a vessel and heated to melt the asphalt and bottom, the molten asphalt normally emitting fumes from the vessel, the bottom made from a polymer which comprises about 0.2 weight percent to about 6 weight percent of a polymer to the asphalt to reduce the visual opacity of the fumes by at least about 25% with respect to the same asphalt without the polymer.
- 38. A method according to claim 37, wherein the added polymer forms a skim on the upper surface of the molten asphalt.
- 39. A method according to claim 38, wherein the polymer has a melt flow index of from about 4 grams/10 minutes to about 150 grams/10 minutes.
- 40. A method according to claim 39, wherein the polymer is added in the form of a consumable container bottom for closing the end of the container to hold the amount of unmelted asphalt, the bottom made from a material comprising from about 40 weight percent to about 90 weight percent of an asphalt and from about 10 weight percent to about 60 weight percent of the polymer.
- 41. A method according to claim 40, wherein both the asphalt without the polymer and the asphalt with the added polymer meet the requirements for at least one type of roofing asphalt according to ASTM D312.
- 42. A method according to claim 41, wherein the addition of the polymer to the molten asphalt neither changes the softening point of the asphalt by more than about 9° C. nor changes the penetration of the asphalt by more than about 10 dmm at 25° C.
- 43. A method according to claim 42, wherein the polymer is selected from the group consisting of polypropylene, ethylene-vinyl acetate copolymer having a vinyl acetate content of from about 5 weight percent to about 40 weight percent, ethylene-methyl acrylate copolymers, rubber, and mixtures thereof.
- 44. A method according to claim 33, wherein the step of melting the asphalt and bottom comprises placing the asphalt and bottom into a vessel and heated to melt the asphalt and bottom, the molten asphalt normally emitting fumes from the vessel, and the bottom comprises about 0.2 weight percent to about 6 weight percent of a polymer to the asphalt to reduce the total emissions of benzene soluble suspended particulates by at least about 15% over the same asphalt without the polymer from the bottom.
- 45. A method according to claim 44, wherein the added polymer forms a skim on the upper surface of the molten asphalt.
- 46. A method according to claim 45, wherein the polymer has a melt flow index of from about 4 grams/10 minutes to about 150 grams/10 minutes.
- 47. A method according to claim 43, wherein the step of melting the asphalt and bottom comprises placing the asphalt and bottom into a vessel and heated to melt the asphalt and bottom, the molten asphalt normally emitting fumes from the vessel, and the bottom comprises about 0.2 weight percent to about 6 weight percent of a polymer to the asphalt to reduce the visual opacity of the fumes by at least about 25% with respect to the same asphalt without the polymer.
- 48. A method according to claim 47, further comprising the steps of:
forming a plurality of longitudinal perforations in the sidewall; providing a string in the container adjacent the perforations; pulling the string to tear the sidewall; and removing the sidewall prior to melting the solidified asphalt.
- 49. A method according to claim 47, further comprising the steps of:
providing a string in the container adjacent the sidewall; pulling the string to tear the sidewall; and removing the sidewall prior to melting the solidified asphalt.
CROSS-REFERENCE TO RELATED APPLICATIONS
1. This application is a continuation-in-part of copending Serial No. 09/169,964 to Marzari et al., filed Oct. 13, 1998.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09169964 |
Oct 1998 |
US |
Child |
09732675 |
Dec 2000 |
US |