GB1105091A - Improvements in and relating to the coating of tubes during the manufacture of light sources - Google Patents
Improvements in and relating to the coating of tubes during the manufacture of light sourcesInfo
- Publication number
- GB1105091A GB1105091A GB3325165A GB3325165A GB1105091A GB 1105091 A GB1105091 A GB 1105091A GB 3325165 A GB3325165 A GB 3325165A GB 3325165 A GB3325165 A GB 3325165A GB 1105091 A GB1105091 A GB 1105091A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- liquid
- coating
- phosphor
- propelling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
- H01J9/22—Applying luminescent coatings
- H01J9/221—Applying luminescent coatings in continuous layers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
A method of coating the inner surface of a translucent tube for use in a self luminous light source wherein a phosphor coating is excited to luminescence by a gaseous radio nucleide, comprises dissolving or suspending a binder in a liquid medium, for example, orthophosphoric acid in acetone or ether introducing the liquid into the tube to form a body of liquid supported therein by surface tension to block said tube, propelling the body of liquid through the tube at a speed sufficient to coat the tube with the liquid by air under pressure, the air at the same time evaporating the liquid from the deposit, drying the deposited coating, adding excess of a phosphor, e.g. zinc sulphide, removing surplus phosphor and baking the tube.ALSO:A method of coating the inner surface of an open ended tube with an adherent material comprises introducing a body of liquid medium containing a coating material in solution or in suspension into the tube, whereby the surface tension of the liquid is chosen such that the body is not separated from the tube propelling the plug through the tube by a jet of pressurised air at a speed sufficient to coat the tube with liquid and evaporate the liquid. In a preferred embodiment, the inner surface of a glass tube is coated with orthophosphoric acid using a solution thereof in acetone or ether, the resultant coating being dried and a phosphor, e.g. zinc sulphide applied thereto, the coated tube being used as a self-luminous light source wherein the excitation is effected by a gaseous radionucleide.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3325165A GB1105091A (en) | 1965-08-03 | 1965-08-03 | Improvements in and relating to the coating of tubes during the manufacture of light sources |
| NL6606649A NL6606649A (en) | 1965-08-03 | 1966-05-13 | |
| DE19661646095 DE1646095B1 (en) | 1965-08-03 | 1966-05-27 | Process for applying a uniform, thin coating to the inner surface of capillaries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3325165A GB1105091A (en) | 1965-08-03 | 1965-08-03 | Improvements in and relating to the coating of tubes during the manufacture of light sources |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1105091A true GB1105091A (en) | 1968-03-06 |
Family
ID=10350499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3325165A Expired GB1105091A (en) | 1965-08-03 | 1965-08-03 | Improvements in and relating to the coating of tubes during the manufacture of light sources |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1646095B1 (en) |
| GB (1) | GB1105091A (en) |
| NL (1) | NL6606649A (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE554819A (en) * | 1956-02-09 | 1900-01-01 | ||
| US3041204A (en) * | 1959-03-24 | 1962-06-26 | Leland W Green | Internal conduit coating method and apparatus |
-
1965
- 1965-08-03 GB GB3325165A patent/GB1105091A/en not_active Expired
-
1966
- 1966-05-13 NL NL6606649A patent/NL6606649A/xx unknown
- 1966-05-27 DE DE19661646095 patent/DE1646095B1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1646095B1 (en) | 1970-10-01 |
| NL6606649A (en) | 1967-02-06 |
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