Methods for fabrication and highway marking usage of agglomerated retroreflective beads
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G02B-005/128
G02B-005/13
G02B-001/12
E01F-009/04
G02B-005/126
G02B-005/136
B29D-011/00
출원번호
US-0833747
(2013-03-15)
등록번호
US-9207373
(2015-12-08)
발명자
/ 주소
Gelfant, Frederick
Mulowski, John
Stough, Jr., Kent
출원인 / 주소
StonCor Group, Inc.
대리인 / 주소
Quinn, Charles N.
인용정보
피인용 횟수 :
1인용 특허 :
113
초록▼
A retroreflective device securable to a highway by bonding thereto preferably with a viscous strip applied to the highway prior to solidifying cure of the strip includes a generally globular glass central member, a desirably pigmented adhesive layer over the central member and a plurality of periphe
A retroreflective device securable to a highway by bonding thereto preferably with a viscous strip applied to the highway prior to solidifying cure of the strip includes a generally globular glass central member, a desirably pigmented adhesive layer over the central member and a plurality of peripheral globular glass members connected to the central member by the pigmented adhesive layer. A method for fabricating the retroreflective device is also disclosed.
대표청구항▼
1. A method for fabricating agglomerated retroreflective glass media consisting of larger central globular glass members, each having a plurality of smaller globular glass members connected to the central member, for highway marking, comprising: a. assembling a supply of largely spherical essentiall
1. A method for fabricating agglomerated retroreflective glass media consisting of larger central globular glass members, each having a plurality of smaller globular glass members connected to the central member, for highway marking, comprising: a. assembling a supply of largely spherical essentially clear larger globular glass members;b. adding silane and water to the supply of larger members;c. blending the silane, water and larger members into a mixture;d. blending resin and accelerator into the mixture;e. blending pigment into the mixture;f. blending a crosslinker-blend into the mixture;g. blending the smaller glass members into the mixture until the larger globular glass members are substantially covered by the smaller members and the smaller members are secured to the larger members by a layer comprising the first silane, the resin and accelerator, the pigment, the crosslinker-blend; andh. blending an anti-wicking agent into the mixture. 2. The method of claim 1, wherein the larger globular glass member have an average diameter of from about six tenths (0.6) of a millimeter to about two (2.0) millimeters; wherein the layer has a thickness of from about ten (10) to about fifty (50) micrometers, and the smaller glass members have an average diameter of from about twenty (20) to about one hundred (100) micrometers. 3. The method of claim 1, wherein average thickness of the layer is from about fifteen percent (15%) to about fifty percent (50%) of the average diameter of the smaller glass members. 4. The method of claim 1, wherein the larger globular glass members have an average diameter of from about eighty-five hundredths (0.85) of a millimeter to about one and four-tenths (1.4) millimeters; the layer has a thickness of from about ten (10) to about forty (40) micrometers; and the smaller glass members have an average diameter of from about sixty (60) to about ninety (90) micrometers. 5. The method of claim 1, wherein the larger globular glass members have an average diameter of about one and two-tenths (1.2) millimeters; the layer has a thickness of about fifteen (15) micrometers; and the smaller glass members have an average diameter of about seventy-five (75) micrometers. 6. The method of claim 1, wherein the accelerator is water. 7. The method of claim 1 performed without temperature control. 8. The method of claim 1 performed without the addition of heat. 9. The method of claim 1 in which the adding and blending steps are performed in fewer than six minutes. 10. The method of claim 1 in which the adding and blending steps are performed in fewer than about five minutes. 11. The method of claim 1, wherein from about ten percent (10%) to about twenty percent (20%) of the smaller glass beads are trickled into the mixture slowly in advance of the remainder of the smaller glass beads. 12. A method for fabricating agglomerated retroreflective glass media for highway marking, comprising: a. assembling a first supply of generally spherical essentially clear glass beads where the beads range in size between about 14 and about 20 mesh and at least about 80% of the beads are round;b. adding silane and water to the first beads and blending the silane, water and beads into a mixture;c. blending resin and accelerator into the mixture;d. blending pigment into the mixture;e. blending a crosslinker-blend into the mixture;f. blending the smaller glass beads into the mixture for sufficient time to adhere to the generally spherical glass beads;g. blending an anti-wicking agent;h. straining the resulting mixture to remove from the mixture agglomerated glass beads of size excessive for road marking; andi. straining the remaining mixture to remove loose smaller glass beads which did not attach to a large glass bead. 13. The method of claim 12, wherein the addition of water comprises from about one tenth (0.1) to about one half (0.5) part by weight relative to the largely spherical essentially clear glass members. 14. The method of claim 13, wherein the addition of water comprises about one-quarter of one part (0.25) by weight relative to the largely spherical essentially clear glass members. 15. The method of claim 12 in which the adding and blending steps are performed in fewer than six minutes. 16. The method of claim 12 in which the adding and blending steps are performed in fewer than about five minutes. 17. The method of claim 12, wherein from about ten percent (10%) to about twenty percent (20%) of the smaller glass beads are trickled into the mixture slowly in advance of the remainder of the smaller glass beads. 18. A method for fabricating agglomerated retroreflective glass media consisting of larger central generally spherical glass members, each having a plurality of smaller generally spherical glass members connected to the central member, for providing reflected light of a preselected color when used for highway marking, comprising: a. assembling a supply of largely spherical essentially clear larger glass members that will amount to about 1000 parts by weight;b. blending between about zero (0) and about two (2.0) parts by weight, relative to the largely spherical essentially clear glass members, of a first silane and between zero (0) and about one (1.0) part by weight, relative to the largely spherical essentially clear glass members, of water together with the supply of larger members into a mixture;c. blending from about four (4.0) to about twenty (20.0) parts by weight, relative to the largely spherical essentially clear glass members, of resin and from about one-tenth ( 1/10) of one part to about two-tenths ( 2/10) of one part of an accelerator into the mixture;d. blending from about two (2.0) to about thirty (30.0) parts by weight of pigment, relative to the largely spherical essentially clear glass members, which pigment is chosen to produce the preselected color of reflected light, into the mixture;e. blending between about six (6) and about thirty-five (35) parts by weight, relative to the largely spherical essentially clear glass members, of a crosslinker-blend into the mixture;f. blending from about two hundred (200) to about four hundred (400) parts by weight, relative to the largely spherical essentially clear glass members, of the smaller glass members into the mixture until the larger glass members are substantially covered by the smaller members and the smaller members are secured to the larger members by a layer comprising the first silane, the resin and accelerator, the pigment, and the crosslinker-blend; andg. blending from about one-tenth (0.1) of one part to about one-half (0.5) of one part of an anti-wicking agent. 19. The method of claim 18, wherein the first silane comprises from about one half (0.5) to about one (1.0) part by weight relative to the largely spherical essentially clear glass members. 20. The method of claim 19, wherein the first silane comprises about one (1.0) part by weight relative to the largely spherical essentially clear glass members. 21. The method of claim 18, wherein the pigment comprises from about five (5.0) to about fifteen (15.0) parts by weight relative to the largely spherical essentially clear glass members. 22. The method of claim 21, wherein the pigment comprises about twelve parts (12.0) by weight relative to the largely spherical essentially clear glass members. 23. The method of claim 18, wherein the resin comprises from about five (5.0) to about twelve (12.0) parts by weight relative to the largely spherical essentially clear glass members. 24. The method of claim 23, wherein the resin comprises about nine parts (9.0) by weight relative to the largely spherical essentially clear glass members. 25. The method of claim 18, wherein the accelerator is water. 26. The method of claim 18, wherein the plasticizer comprises from about two-tenths of one part (0.2) to about two (2.0) parts by weight relative to the largely spherical essentially clear glass members. 27. The method of claim 26, wherein the plasticizer comprises about four tenths of one part (0.4) by weight relative to the largely spherical essentially clear glass members. 28. The method of claim 18, wherein the cross-linker comprises from about six (6.0) to about twelve (12.0) parts by weight relative to the largely spherical essentially clear glass members. 29. The method of claim 28, wherein the cross-linker comprises about ten parts (10.0) by weight relative to the largely spherical essentially clear glass members. 30. The method of claim 18, wherein the second silane comprises from about one half of one part (0.5) to about one (1.0) part by weight relative to the largely spherical essentially clear glass members. 31. The method of claim 30, wherein the second silane comprises about one part (1.0) by weight relative to the largely spherical essentially clear glass members. 32. The method of claim 18, wherein the smaller glass members comprise about three hundred (300.0) parts by weight relative to the largely spherical essentially clear glass members. 33. The method of claim 18, wherein the pigment is white. 34. The method of claim 18, wherein the pigment is a fifty-fifty blend by weight of white and yellow pigment. 35. The method of claim 18 in which the adding and blending steps are performed in fewer than six minutes. 36. The method of claim 18 in which the adding and blending steps are performed in fewer than about five minutes. 37. The method of claim 18, wherein from about ten percent (10%) to about twenty percent (20%) of the smaller glass beads are trickled into the mixture slowly in advance of the remainder of the smaller glass beads.
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