GB2301049A - Coating a wire rope by electrophoretic painting or electrostatic powder coating - Google Patents

Coating a wire rope by electrophoretic painting or electrostatic powder coating Download PDF

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Publication number
GB2301049A
GB2301049A GB9506473A GB9506473A GB2301049A GB 2301049 A GB2301049 A GB 2301049A GB 9506473 A GB9506473 A GB 9506473A GB 9506473 A GB9506473 A GB 9506473A GB 2301049 A GB2301049 A GB 2301049A
Authority
GB
United Kingdom
Prior art keywords
coating
rope
wire rope
coating material
powder
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.)
Granted
Application number
GB9506473A
Other versions
GB2301049B (en
GB9506473D0 (en
Inventor
Michael David Hitchen
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.)
Jennifer Smith
Original Assignee
Jennifer Smith
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 Jennifer Smith filed Critical Jennifer Smith
Priority to GB9506473A priority Critical patent/GB2301049B/en
Publication of GB9506473D0 publication Critical patent/GB9506473D0/en
Publication of GB2301049A publication Critical patent/GB2301049A/en
Application granted granted Critical
Publication of GB2301049B publication Critical patent/GB2301049B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • 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
    • B05D1/007—Processes for applying liquids or other fluent materials using an electrostatic field
    • 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
    • B05D1/06—Applying particulate materials
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
    • C23C2/24—Removing excess of molten coatings; Controlling or regulating the coating thickness using magnetic or electric fields
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process
    • C25D13/12—Electrophoretic coating characterised by the process characterised by the article coated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

A method of coating a wire rope 1 with a durable, preferably non-glossy black coating for use in theatrical and film productions, for example for suspending lighting equipment and scenery, comprising attracting a coating material on to the rope by means of an electric charge, and then curing or fusing the coating material. Electrophoretic painting or electrostatic powder coating may suitably by used with the coating then being baked to cure or fuse it.

Description

COATING WIRE ROPE Field of the Invention This invention relates to a method of providing a coating on wire rope, especially a black coating of reduced reflectivity for use in theatrical and like applications.
Background to the Invention Ropes for disguised suspension of articles (or indeed persons) in theatrical and film productions are typically coloured black so that they are less easily seen and, in the case of film productions, can be more readily removed from the final film image by image processing. There are two main methods in current use for providing a black rope. Plastics ropes can be formed from coloured plastics stock, and steel and other wire ropes can be painted.
Plastics ropes are regarded as unsatisfactory for studio and theatrical use in the UK because of the risk that they will be brought into contact with lights, creat- ing the risk of toxic fumes being emitted, or even of fire. Painted wire ropes require frequent repainting, because of the difficulty of adhering paint to them; the flexing and other manipulation of the wires in use tends to cause the paint to be- come detached.
Summary of the Invention According to a first aspect of the invention there is provided a method of providing a durable coating on wire rope, comprising attracting a coating material on to the rope by means of an electric charge, and then curing or fusing the coat- ing material.
Preferably, the method comprises electrophoretically attracting a liquid coating material on to the wire rope. The material may be any paint or like coating suitable for electrophoretic coating techniques, and is suitably applied by immersing the rope in a bath of the material and applying a D.C. voltage for a period sufficient to ensure that a continuous coating is built up. The paint is then cured by baking to form a cured film, which is flexible and strongly adhering to the rope so that, under normal use, it does not flake or otherwise deteriorate.
Alternatively, the coating material may be a fusible powder material which is attracted to the wire rope by electrostatically charging the powder while propelling it towards the rope by means of a gas flow, the rope then being baked to fuse the coating powder. Powder coating techniques are generally well-known, and it has been found that their application to wire rope provides a coating superior to that achieved by conventional painting techniques.
Preferably, for theatrical use and the like, the coating material is a black pigmented material which is non-glossy when cured or fused.
Brief Description of the Drawing In the drawings: Figure 1 illustrates diagrammatically apparatus for carrying out a method of electrophoretic coating of a wire rope in accordance with one embodiment of the invention; and Figure 2 illustrates diagrammatically apparatus for carrying out powder coating of a wire rope in accordance with another embodiment of the invention.
Detailed Description of the Illustrated Embodiment Referring first to Figure 1, the wire rope 1 to be coated is suspended in loose coils in a tank 2 containing the paint. The rope is negatively charged via its sus- pension means 3, and the tank 2 forms the cathode. The paint, in the form of charged colloidal particles, migrates into contact with the wires constituting the rope and adheres to them. The wire rope is then removed from the tank and suspended in an oven 4 at 2000C for about 10 minutes to cure the paint to form a continuous and flexible film over the surface of the rope.
In the process illustrated by Figure 2, the rope 5 is suspended in relatively short lengths in a spray booth 6, the suspension points 7 being electrically grounded, and a powder coating is sprayed on to the rope by a manually-operated powder spray device 8 which applies an electrostatic charge to the particles as they are propelled from the device by compressed air. The charged particles are attracted to the grounded ropes and coat the surface of the wires uniformly. The ropes are then removed to an oven 9, where they are baked to fuse the coating on to the surface to form a continuous flexible and durable film.
The ropes produced by the method of the invention may be used to form supports and slings for suspending equipment, articles of scenery, or even persons, while being invisible to the audience, or readily removable from film or video recordings of the scene. It will be appreciated that the technique is usable to form coatings on wire ropes for other purposes than theatrical.

Claims (6)

1. A method of providing a durable coating on wire rope, comprising attracting a coating material on to the rope by means of an electric charge, and then curing or fusing the coating material.
2. A method according to Claim 1, comprising electrophoretically attracting a liquid coating material on to the wire rope.
3. A method according to Claim 2, comprising immersing the rope in a bath of the material and applying a D.C. voltage for a period sufficient to ensure that a continuous coating is built up.
4. A method according to Claim 3, wherein the coated rope is baked to cure the coating.
5. A method according to Claim 1, wherein the coating material is a fusible powder material which is attracted to the wire rope by electrostatically charging the powder while propelling it towards the rope by means of a gas flow, the rope then being baked to fuse the coating powder.
6. A method of providing a durable coating on wire rope, substantially as described with reference to Figure 1 or Figure 2 of the drawings.
6. A method according to any preceding claim, wherein the coating material is such as to provide a non-glossy substantially non-light-reflecting coating.
7. A method of providing a durable coating on wire rope, substantially as described with reference to Figure 1 or Figure 2 of the drawings.
Amendments to the claims have been filed as follows
1. A method of providing a durable coating on wire rope, comprising attracting a coating material on to the rope by means of an electric charge, and then curing or fusing the coating material, comprising electrophoretically attracting a liquid coating material on to the wire rope.
2. A method according to Claim 1, comprising immersing the rope in a bath of the material and applying a D.C. voltage for a period sufficient to ensure that a continuous coating is built up.
3. A method according to Claim 2, wherein the coated rope is baked to cure the coating.
4. A method of providing a durable coating on wire rope, comprising attracting a coating material on to the rope by means of an electric charge, and then curing or fusing the coating material, wherein the coating material is a fusible powder material which is attracted to the wire rope by electrostatically charging the powder while propelling it towards the rope by means of a gas flow, the rope then being baked to fuse the coating powder.
5. A method according to any preceding claim, wherein the coating material is such as to provide a non-glossy substantially non-light-reflecting coating.
GB9506473A 1995-03-30 1995-03-30 Coating a wire rope by electrophoretic painting Expired - Fee Related GB2301049B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9506473A GB2301049B (en) 1995-03-30 1995-03-30 Coating a wire rope by electrophoretic painting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9506473A GB2301049B (en) 1995-03-30 1995-03-30 Coating a wire rope by electrophoretic painting

Publications (3)

Publication Number Publication Date
GB9506473D0 GB9506473D0 (en) 1995-05-17
GB2301049A true GB2301049A (en) 1996-11-27
GB2301049B GB2301049B (en) 1998-09-16

Family

ID=10772129

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9506473A Expired - Fee Related GB2301049B (en) 1995-03-30 1995-03-30 Coating a wire rope by electrophoretic painting

Country Status (1)

Country Link
GB (1) GB2301049B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104562154B (en) * 2015-01-06 2017-11-03 中国科学院金属研究所 A kind of method of refractory metal material surface Zr base ceramic coatings protection

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1347502A (en) * 1971-08-27 1974-02-27 Middlesex Oil Chemical Works L Wax coating motor vehicle bodies
GB1536797A (en) * 1976-03-19 1978-12-20 Sekisui Chemical Co Ltd Method of coating metal substrates
US5208077A (en) * 1990-11-09 1993-05-04 Florida Wire And Cable Company Method for a composite material comprising coated and filled metal strand for use in prestressed concrete, stay cables for cable-stayed bridges and other uses

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1347502A (en) * 1971-08-27 1974-02-27 Middlesex Oil Chemical Works L Wax coating motor vehicle bodies
GB1536797A (en) * 1976-03-19 1978-12-20 Sekisui Chemical Co Ltd Method of coating metal substrates
US5208077A (en) * 1990-11-09 1993-05-04 Florida Wire And Cable Company Method for a composite material comprising coated and filled metal strand for use in prestressed concrete, stay cables for cable-stayed bridges and other uses

Also Published As

Publication number Publication date
GB2301049B (en) 1998-09-16
GB9506473D0 (en) 1995-05-17

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20140330