GB925021A - Improvements in or relating to methods of forming internal coatings on hollow vessels - Google Patents

Improvements in or relating to methods of forming internal coatings on hollow vessels

Info

Publication number
GB925021A
GB925021A GB3618359A GB3618359A GB925021A GB 925021 A GB925021 A GB 925021A GB 3618359 A GB3618359 A GB 3618359A GB 3618359 A GB3618359 A GB 3618359A GB 925021 A GB925021 A GB 925021A
Authority
GB
United Kingdom
Prior art keywords
film
envelope
tube
vessel
fluorescent
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
Application number
GB3618359A
Inventor
Donald Cecil Major
Evan Herbert Nelson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB3618359A priority Critical patent/GB925021A/en
Publication of GB925021A publication Critical patent/GB925021A/en
Expired legal-status Critical Current

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • B05D1/045—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field on non-conductive substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • B05D7/227—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of containers, cans or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

925,021. Electrostatic precipitation. GENERAL ELECTRIC CO. Ltd. Oct. 14, 1960 [Oct. 26, 1959], No. 36183/59. Class 39 (1). [Also in Groups XI and XV] A method of electrostatically depositing a layer of particulate material on the inner surface of a hollow vessel includes the steps of forming over the part of the surface on which the material is to be deposited a film of a conducting liquinol, establishing an electric potential between the film and an electrode positioned within the vessel and, before the film as dried, applying the particulate material to the surface charged in such a sense that it is attracted towards the film and forms a coating on the surface. The particulate material is the fluorescent coating of a bulbous HPMV lamp or a tubular lamp or a light-diffusing silica coating of an incandescent lamp. The envelope may be of glass or metal. In the method the bulb is sprayed with water containing 0.1-1% of a wetting agent such as " Teepol " or " Lissapol " (Registered Trade Marks), and the lamp is mounted in a rotatable holder 4 of the suction kind and drained to leave a liquid film. A glass tube 7 is introduced into the bulb. It contains a needle electrode 9 carried by wires 8 held by resilient metal bands 10 of part circular shape. A corona discharge is set up between electrode 9 and liquid film 12 and the fluorescent material which may be magnesium fluorogermanate is blown upwards through tube 7, e.g. as in Specification 925,023, while holder 4 rotates the envelope and the envelope or tube 7 is oscillated vertically or moved in one direction, the vertical speed being varied in accordance with the diameter of the envelope, as in Specification 925,022 by cam 13. The gas is blown upwards through glass fibre pad 27 and glass balls 28 which exert a milling action on the fluorescent powder. After the envelope is coated it is baked in an oven to dry it. The various operations may take place while the tubes are advanced along a single production line. The fluorescent or light-diffusing material may or may not be charged electrically, e.g. by friction before introduction into the vessel. The liquid may or may not have drained when the vessel is fitted over tube 7. A spring clip 5 provides a terminal for the liquid film.
GB3618359A 1959-10-26 1959-10-26 Improvements in or relating to methods of forming internal coatings on hollow vessels Expired GB925021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3618359A GB925021A (en) 1959-10-26 1959-10-26 Improvements in or relating to methods of forming internal coatings on hollow vessels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3618359A GB925021A (en) 1959-10-26 1959-10-26 Improvements in or relating to methods of forming internal coatings on hollow vessels

Publications (1)

Publication Number Publication Date
GB925021A true GB925021A (en) 1963-05-01

Family

ID=10385733

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3618359A Expired GB925021A (en) 1959-10-26 1959-10-26 Improvements in or relating to methods of forming internal coatings on hollow vessels

Country Status (1)

Country Link
GB (1) GB925021A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4950497A (en) * 1989-06-15 1990-08-21 S.L. Electrostatic Technology, Inc. Method and apparatus for coating interior surfaces of objects
US5242718A (en) * 1987-06-15 1993-09-07 Electrostatic Technology, Inc. Coating apparatus and method with fluidized bed feed effect

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5242718A (en) * 1987-06-15 1993-09-07 Electrostatic Technology, Inc. Coating apparatus and method with fluidized bed feed effect
US4950497A (en) * 1989-06-15 1990-08-21 S.L. Electrostatic Technology, Inc. Method and apparatus for coating interior surfaces of objects

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