IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0584126
(1984-02-27)
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우선권정보 |
CA-436397 (1983-09-09) |
발명자
/ 주소 |
- Arena, Joseph W.
- Gilson, Karle B.
- Malcolm, David T.
- Mellander, John A. R.
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출원인 / 주소 |
- Crown Forest Industries Limited
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대리인 / 주소 |
Limbach, Limbach & Sutton
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인용정보 |
피인용 횟수 :
3 인용 특허 :
0 |
초록
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Overlaid plywood is made by filling surface defects on a plywood panel with a thermosetting resin; overlaying the filled surface(s) with sheet(s) of overlay paper and then compressing the panel, while heating the panel. Gluelines in the plywood veneer and in the overlay paper(s) are cured during the
Overlaid plywood is made by filling surface defects on a plywood panel with a thermosetting resin; overlaying the filled surface(s) with sheet(s) of overlay paper and then compressing the panel, while heating the panel. Gluelines in the plywood veneer and in the overlay paper(s) are cured during the hot pressing operation, which also flattens and hardens the resin-filled defects to form a smooth-surfaced overlaid plywood panel.
대표청구항
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1. A method of making overlaid plywood, comprising the steps of: (a) filling surface defects on a side of a plywood panel with a thermosetting resin; (b) overlaying said side with a sheet of overlay paper while said resin remains in the liquid state; and, (c) compressing said panel while heatin
1. A method of making overlaid plywood, comprising the steps of: (a) filling surface defects on a side of a plywood panel with a thermosetting resin; (b) overlaying said side with a sheet of overlay paper while said resin remains in the liquid state; and, (c) compressing said panel while heating said panel. 2. A method as defined in claim 1, wherein said compressing step comprises compressing said panel at a pressure of from about 150 pounds per square inch to about 250 pounds per square inch. 3. A method as defined in claim 2, wherein said heating step comprises heating said panel to a temperature of from about 250° F. to about 350° F. 4. A method as defined in claim 1, further comprising, prior to said filling step, blocking surface defects which extend to an edge of said panel side by applying tape along said edges, at said defects. 5. A method as defined in claim 4, wherein said tape is blown neoprene rubber tape. 6. A method as defined in claim 1, 2 or 3, wherein said resin is selected from the group consisting of: (i) epoxies; (ii) epoxides; (iii) oxiranes; and, (iv) ethoxylines. 7. A method as defined in claim 1, 2 or 3, wherein said resin is selected from the group consisting of: (i) bis-epi resins; (ii) epoxy novolac resins; and, (iii) cycloaliphatic epoxies. 8. A method as defined in claim 1, 2 or 3 further comprising, prior to said filling step, adding to said resin a curing agent or catalyst which promotes cross linking or homo polymerization of said resin. 9. A method as defined in claim 1, 2 or 3 further comprising, prior to said filling step, adding to said resin a curing agent or catalyst selected from the group consisting of: (i) primary and secondary amines; (ii) lewis acids; (iii) acid anhydrides; and, (iv) lewis bases. 10. A method as defined in claim 1, 2 or 3 further comprising, prior to said filling step, adding to said resin a calcium carbonate filler. 11. A method as defined in claim 1, 2 or 3 wherein said resin is a two part expoxy resin, the first part thereof comprising epoxy resin and 1, 3- benzenediol accelerator; the second part thereof including compounds selected from the group consisting of: (i) diethylene triamine; (ii) aminoethyl piperazine; (iii) diethylaminopropylamine with a dibutyl phthalate; (iv) nonyl phenol; and, (v) dinonyl phenol diluents. 12. A method of making overlaid plywood, comprising the steps of: (a) forming a plywood panel with layers of glued veneer; (b) compressing said panel for a period of from about three minutes to about ten minutes; (c) filling surface defects on a side of said panel with a thermosetting resin; (d) overlaying said side with a sheet of overlay paper while said resin remains in the liquid state; and, (e) compressing said panel while heating said panel. 13. A method as defined in claim 12, wherein said compressing steps comprise compressing said panel at a pressure of from about 150 pounds per square inch to about 250 pounds per square inch. 14. A method as defined in claim 13, wherein said heating step comprises heating said panel to a temperature of from about 250° F. to about 350° F. 15. A method defined in claim 12, 13 or 14 wherein no more than about thirty minutes elapse between said conpressing steps. 16. A method as defined in claim 14, further comprising, prior to said filling step, blocking surface defects which extend to an edge of said panel side by applying tape along said edges, at said defects. 17. A method as defined in claim 16, wherein said tape is blown neoprene rubber tape. 18. A method as defined in claim 12, 13 or 14, wherein said resin is selected from the group consisting of: (i) epoxies (ii) epoxides; (iii) oxiranes; and, (iv) ethoxylines. 19. A method as defined in claim 12, 13 or 14, wherein said resin is selected from the group consisting of: (i) bis-epi resins; (ii) epoxy novolac resins; and, (iii) cycloaliphatic epoxies. 20. A method as defined in claim 12, 13 or 14, further comprising, prior to said filling step, adding to said resin a curing agent or catalyst which promotes cross linking or homo polymerization of said resin. 21. A method as defined in claim 12, 13 or 14 further comprising, prior to said filling step, adding to said resin a curing agent or catalyst selected from the group consisting of: (i) primary and secondary amines; (ii) lewis acids; (iii) acid anhydrides; and, (iv) lewis bases. 22. A method as defined in claim 12, 13 or 14 further comprising, prior to said filling step, adding to said resin a calcium carbonate filler. 23. A method as defined in claim 12, 13 or 14 wherein said resin is a two part epoxy resin, the first part thereof comprising epoxy resin and 1, 3-benzenediol accelerator; the second part thereof including compounds selected from the group consisting (i) diethylene triamine; (ii) aminoethyl piperazine; (iii) diethylaminopropylamine with a dibutyl phthalate; (iv) nonyl phenol; and, (v) dinonyl phenol diluents. 24. A method as defined in claim 1, 2 or 3, wherein no more than about sixty minutes elapse between said filling step and said compressing step. 25. A method of making overlaid plywood, comprising the steps of: (a) forming a plywood panel with layers of glued veneer; (b) compressing said panel while heating said panel; (c) cooling said panel; (d) filling surface defects on a side of said panel with a thermosetting resin; (e) overlaying said side with a sheet of glue-impregnated overlay paper while said resin remains in the liquid state; and, (f) compressing said panel while heating said panel. 26. A method as defined in claim 25, wherein said cooling step comprises cooling said panel to about 110° F. 27. A method as defined in claim 26, wherein said compressing steps comprise compressing said panel at a pressure of about 150 pounds per square inch to about 250 pounds per square inch. 28. A method as defined in claim 27, wherein said heating steps comprise heating said panel to a temperature of about 250° F. to about 350° F. 29. A method as defined in claim 25, 27 or 28 wherein no more than about sixty minutes elapse between said filling step and said second compressing step. 30. A method as defined in claim 25, further comprising, prior to said filling step, blocking surface defects which extend to an edge of said panel side by applying tape along said edges, at said defects. 31. A method as defined in claim 30, wherein said tape is blown neoprene rubber tape. 32. A method as defined in claim 25, 27 or 28, wherein said resin is selected from the group consisting of: (i) epoxies; (ii) epoxides; (iii) oxiranes; and, (iv) ethoxylines. 33. A method as defined in claim 25, 27 or 28, further comprising, prior to said filling step, adding to said resin a curing agent or catalyst which promotes cross linking or homo polymerization of said resin. 34. A method as defined in claim 25, 27 or 28, further comprising, prior to said filling step, adding to said resin a curing agent or catalyst selected from the group consisting of: (i) primary and secondary amines; (ii) lewis acids; (iii) acid anhydrides; and, (iv) lewis bases. 35. A method as defined in claim 25, 27 or 28, further comprising, prior to said filling step, adding to said resin a calcium carbonate filler. 36. A method as defined in claim 25, 27 or 28, wherein said resin is a two part epoxy resin, the first part thereof comprising epoxy resin and 1, 3-benzenediol accelerator; the second part thereof including compounds selected from the group consisting of: (i) diethylene triamine; (ii) aminoethyl piperazine; (iii) diethylaminopropylamine with a dibutyl phthalate; (iv) nonyl phenol; and, (v) dinonyl phenol diluents. 37. A method of making overlaid plywood, comprising the steps of: (a) applying thermosetting resin to a side of a plywood panel; (b) overlaying said side with a sheet of overlay paper while said resin remains in the liquid state; and, (c) compressing said panel while heating said panel. 38. A method as defined in claim 37, wherein said resin is selected from the group consisting of: (i) epoxies; (ii) epoxides; (iii) oxiranes; and, (iv) ethoxylines. 39. A method as defined in claim 37, wherein said resin is selected from the group consisting of: (i) bis-epi resins; (ii) epoxy novolac resins; and, (iii) cycloaliphatic epoxies. 40. A method as defined in claim 37, further comprising, prior to said applying step, adding to said resin a curing agent or catalyst which promotes cross linking or homo polymerization of said resin. 41. A method as defined in claim 37, further comprising, prior to said applying step, adding to said resin a curing agent or catalyst selected from the group consisting of: (i) primary and secondary amines; (ii) lewis acids; (iii) acid anhydrides; and, (iv) lewis bases. 42. A method as defined in claim 41 further comprising, prior to said applying step, adding to said resin a calcium carbonate filler. 43. A method as defined in claim 37, wherein said resin is a two part epoxy resin, the first part thereof comprising epoxy resin and 1, 3-benzenediol accelerator; the second part thereof including compounds selected from the group consisting of: (i) diethylene triamine; (ii) aminoethyl piperazine; (iii) diethylaminopropylamine with a dibutyl phthalate; (iv) nonyl phenol; and, (v) dinonyl phenol diluents.
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