GB1266402A - - Google Patents
Info
- Publication number
- GB1266402A GB1266402A GB1266402DA GB1266402A GB 1266402 A GB1266402 A GB 1266402A GB 1266402D A GB1266402D A GB 1266402DA GB 1266402 A GB1266402 A GB 1266402A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conductors
- etching
- tank
- reaction
- solution
- 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
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
- H01B3/306—Polyimides or polyesterimides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
- H01B7/0838—Parallel wires, sandwiched between two insulating layers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0393—Flexible materials
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/0154—Polyimide
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/03—Metal processing
- H05K2203/0346—Deburring, rounding, bevelling or smoothing conductor edges
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/15—Position of the PCB during processing
- H05K2203/1545—Continuous processing, i.e. involving rolls moving a band-like or solid carrier along a continuous production path
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/06—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing Of Printed Wiring (AREA)
Abstract
1,266,402. Coated products. WESTINGHOUSE ELECTRIC CORP. 18 March, 1969, No. 14091/69. Heading B2E. [Also in Division H1] A plurality of spaced conductors on a resin film are formed by etching a metal foil coated with a resin film, removing the etching resist used to define the conductors, and etching the metal conductors to round the sharp edges thereof. Copper foil from roll 10 is kiss coated on one side with a resin film in bath 11 to the required thickness, dried in tower 14 and then applied with parallel strips of paraffin wax or thermoplastic resin etching resist from extruder head 15 on the other side. After etching in tank 16 the resist is removed in tank 17 and after washing in tank 18 the conductors are subjected to a further etching process in tank 19 to round off the sharp edges of the conductors, Fig. 4. A resin coating is deposited on both sides of the composite by passing through tank 22. By performing the additional etching step sharp undercut edges of the metal conductors are removed so that they do not notch into the final resin coating. The conductors may be plated with a thin nickel flash prior to the final coating stage. The resin film kiss coated on the copper film may be a dimethyl acetamide solution of an aromatic polyamide-imide amic acid precursor formed by the reaction of pyromellitic dianhydride and 3,4'-diaminobenzanilide and the final resin coating a dimethyl acetamide, N-methylpyrrolidone and toluene solution of a soluble aromatic polyimide precursor derived from the reaction of the 4-acid chloride of trimellitic anhydride and p,p'- methylene bis(dianiline). Alternatively the final resin may be a dimethyl acetamide and xylene solution of an aromatic polyamic-acid precursor formed by the reaction of benzophenone tetracarboxylic dianhydride and 4,4'-diaminophenyl ether. The final resin coating solution may also be a dimethyl acetamide solution of precursor formed by the reaction of pyromellitic dianhydride and 4,4'-diaminophenyl ether and 3,4'-diaminobenzanilide. Reference has been directed by the Comptroller to Specification 1,104,100.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1409169 | 1969-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1266402A true GB1266402A (en) | 1972-03-08 |
Family
ID=10034832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1266402D Expired GB1266402A (en) | 1969-03-18 | 1969-03-18 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1266402A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0193156A2 (en) * | 1985-02-25 | 1986-09-03 | Oki Electric Industry Company, Limited | Flexible cable and method of manufacturing thereof |
-
1969
- 1969-03-18 GB GB1266402D patent/GB1266402A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0193156A2 (en) * | 1985-02-25 | 1986-09-03 | Oki Electric Industry Company, Limited | Flexible cable and method of manufacturing thereof |
| EP0193156A3 (en) * | 1985-02-25 | 1989-03-01 | Oki Electric Industry Company, Limited | Flexible cable and method of manufacturing thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |