GB2188065A - Composite material - Google Patents

Composite material Download PDF

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Publication number
GB2188065A
GB2188065A GB08606390A GB8606390A GB2188065A GB 2188065 A GB2188065 A GB 2188065A GB 08606390 A GB08606390 A GB 08606390A GB 8606390 A GB8606390 A GB 8606390A GB 2188065 A GB2188065 A GB 2188065A
Authority
GB
United Kingdom
Prior art keywords
plastics material
sheet
layer
perforate
metal
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.)
Withdrawn
Application number
GB08606390A
Other versions
GB8606390D0 (en
Inventor
James Howard Cox
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB08606390A priority Critical patent/GB2188065A/en
Publication of GB8606390D0 publication Critical patent/GB8606390D0/en
Publication of GB2188065A publication Critical patent/GB2188065A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/54—Electroplating of non-metallic surfaces
    • C25D5/56—Electroplating of non-metallic surfaces of plastics
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B1/00—Hats; Caps; Hoods
    • A42B1/16—Millinery
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C27/00—Making jewellery or other personal adornments
    • A44C27/001—Materials for manufacturing jewellery
    • A44C27/005—Coating layers for jewellery
    • A44C27/006—Metallic coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/08—Stamping or bending

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

A plastics material which may be perforated is rendered conducting on all exposed surfaces and a metallic layer is deposited by electrolysis to all the exposed surfaces producing an article in which the plastics material is totally encapsulated in metal. The plastics material may be a sheet which is shaped before being rendered conductive. Shaping may be done by vacuum forming and if the plastics material is perforated it is overlayed with a sheet of imperforate plastics material which is discarded after the vacuum forming step. The material may be styrene and the metal may be copper or nickel. The material will be particularly useful in the manufacture of decorative items such as ornaments and ladies hats.

Description

SPECIFICATION Composite Material This invention relates to a novel composite material, a method of manufacturing the material and a method of producing articles through forming of the material.
In one aspect, the present invention consists in a method of manufacturing an article from a thin sheet of perforate plastics material, comprising the steps of overlaying said perforate sheet with a thin sheet of imperforate plastics material; vacuum forming said overlying sheets in a pre-shaped mould; discarding said imperforate sheet; applying an electrically conductive layer to all exposed surfaces of the perforate sheet including edge surfaces in said perforations and depositing by electrolysis a metallic layer to said exposed surfaces to produce a shaped article in which said plastics material is totally encapsulated in metal.
If desired, a decorative metallic layer, which may be of precious metal, can be applied over said metallic layer.
Suitably, the plastics material is styrene and the metal applied by electrolysis is copper or nickel.
In another aspect, the present invention consists in a method of manufacturing an article, comprising the steps of forming a thin sheet of plastics material to a desired shape; applying to all exposed surfaces of the plastics material an electrically conductive coating and depositing by electrolysis a metallic layer over said exposed surfaces to produce a shaped article in which said plastics material is totally encapsulated in metal.
Advantageously, the plastics material is vacuum formed to the desired shape; alternatively, the plastics material is manually formed.
In yet a further aspect, the present invention consists in a perforate composite material comprising a central layer of perforate plastics material; a layer of conductive paint over the entire surface of the plastics layer and an outer layer of electrolytically deposited metal.
Suitably, the plastics material comprises styrene and the electrolytically deposited metal comprises copper or nickel.
Advantageously, the material is provided on at least one side with a thinly deposited layer of zinc, silver, gold or chrome.
This invention will now be described by way of examples.
An important application of the material and methods according to this invention lies in the production of decorative items such as jewellery ornaments or-in one special application-millinery. In order to produce a ladies hat of novel and striking appearance, the following method may be employed.
A mould may be formed in the appropriate shape from turned wood or any other suitable technique.
One other technique which is of particular usefulness employs a sheet of aluminium which is cut to form a spiral strip. By pulling the strip out of the plane of the aluminium sheet, the surface defined by the envelope of the spiral strip can be brought to the desired form.
A sheet of styrene approximately 0.5 mm in thickness is used with a regular array of relatively closely spaced perforations. The shape, size and arrangement of the perforations may be selected to give the required aesthetic effect in the finished article. The perforate sheet is covered with a sheet of imperforate but otherwise identical material and the two sheets are arranged in appropriate juxtaposition with the mould in a vacuum forming machine. Once the vacuum forming operation has been completed, the imperforate sheet is discarded.
To enable deposition by electrolysis, the entire exposed surface of the formed perforate sheet must be rendered conductive and this is conveniently achieved by the use of an air brush and commercially available silver paint. Care is taken to ensure that all exposed surfaces, including edge surfaces of the perforations, are coated with paint.
After a suitable drying period, the now conductive article is positioned in a bath with a copper sulphate sulphuric acid electrolyte. Electrical connection is made to the silver coating of the article and with a copper anode also disposed in the elctrolyte bath.
An appropriate current is supplied for a sufficient length of time to deposit a layer of approximately 0.2 mm of copper. The now metallic article may be finished in a number of ways. In one example, the copper is merely polished and a suitable edging applied to the periphery of the sheet to form a finished hat. One or more hat pins may be conveniently passed through the perforations.
Alternatively, a decorative coating may be applied by depositing zinc, chrome, silver or gold or any other appropriate metal. This layer may be electroplated or chemically deposited. By suitable choice of the mould, this method may be extended to the production of a wide range of decorative items. In certain cases, an article may be formed by the bonding together of two shells, each shell being formed in an analogous fashion to the above described hat. This technique may be applied, for example to the production of bracelets or ornaments. Using the shell technique, the final decorative layer, if felt necessary, may be applied only to those surfaces which are exposed in the final construction.
In a further modification of the technique, plastics sheet may be used which is not perforated. The appearance of the finished article is then less distinctive but various techniques of surface treatment may be used to impart a decorative effect.
In yet a further modification, the plastics sheet is formed by techniques other than vacuum forming.
The sheet may for example be formed manually by cutting and folding with adhesive being used, if necessary, to hold the sheet in the desired shape.
This manual forming may be combined with techniques of hot forming if necessary.
This invention has been described by way of examples only and a wide variety of further modifications all falling within the scope of the invention will occur to those skilled in the art.

Claims (10)

1. A method of manufacturing an article from a thin sheet of perforate plastics material, comprising the steps of overlaying said perforate sheet with a thin sheet of imperforate plastics material; vacuum forming said overlying sheets in a pre-shaped mould; discarding said imperforate sheet; applying an electrically conductive layer to all exposed surfaces of the perforate sheet including edge surfaces in said perforations and depositing by electrolysis a metallic layer to said exposed surfaces to produce a shaped article in which said plastics material is totally encapsulated in metal.
2. A method according to claim 1, wherein a decorative metallic layer is applied over said metallic layer.
3. A method according to Claim 1, or Claim 2, wherein the plastics material is styrene and the metal applied by electrolysis is copper or nickel.
4. A method of manufacturing an article, comprising the steps of forming a thin sheet of plastics material to a desired shape; applying to all exposed surfaces of the plastics material an electrically conductive coating and depositing by electrolysis a metallic layer over said exposed surfaces to produce a shaped article in which said plastics material is totally encapsulated in metal.
5. A method according to Claim 4, wherein the plastics material is vacuum formed to the desired shape.
6. A method according to Claim 4, wherein the plastics material is manually formed.
7. A perforate composite material comprising a central layer of perforate plastics material; a conductive layer over the entire surface of the plastics layer and an outer layer of electrolytically deposited metal.
8. A material according to Claim 7, wherein the plastics material comprises styrene.
9. A material according to Claim 7 or Claim 8, wherein the electrolytically deposited metal comprises copper or nickel.
10. A material according to Claim 7, Claim 8 or Claim 9, wherein the material is provided on at least one side with a thinly deposited layer of zinc, silver, gold or chrome.
GB08606390A 1986-03-14 1986-03-14 Composite material Withdrawn GB2188065A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08606390A GB2188065A (en) 1986-03-14 1986-03-14 Composite material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08606390A GB2188065A (en) 1986-03-14 1986-03-14 Composite material

Publications (2)

Publication Number Publication Date
GB8606390D0 GB8606390D0 (en) 1986-04-23
GB2188065A true GB2188065A (en) 1987-09-23

Family

ID=10594638

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08606390A Withdrawn GB2188065A (en) 1986-03-14 1986-03-14 Composite material

Country Status (1)

Country Link
GB (1) GB2188065A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2705063A1 (en) * 1993-05-10 1994-11-18 Besancenot Eric Improvement in the method of manufacturing a decorative article for the building.
IT201800010756A1 (en) * 2018-12-03 2020-06-03 Salim Mouhadab PROCESS OF MANUFACTURING OF ORNAMENTAL OBJECTS

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
F.A. LOWENHEIM (EDITOR), }MODERN ELECTROPLATING}, 1974, WILEY INTERSCIENCE, CHAPTER 28, PAGES 636-637 *
KIRK-OTHMER ENCYCLOPEDIA OF CHEMICAL TECHNOLOGY, 2ND EDITION 1970, WILEY-INTERSCIENCE, VOLUME 13 PAGES 832-843, PAGES 832 AND 833 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2705063A1 (en) * 1993-05-10 1994-11-18 Besancenot Eric Improvement in the method of manufacturing a decorative article for the building.
WO1994026538A1 (en) * 1993-05-10 1994-11-24 Eric Besancenot Method of production and surface treatment
IT201800010756A1 (en) * 2018-12-03 2020-06-03 Salim Mouhadab PROCESS OF MANUFACTURING OF ORNAMENTAL OBJECTS

Also Published As

Publication number Publication date
GB8606390D0 (en) 1986-04-23

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)