Patent US5137791A successfully refreshed from Google Patents.
US5137791A
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US
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Metal-film laminate resistant to delamination
Assignee: Multek Flexible Circuits Inc
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Filing: 1991-04-05
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Granted: 1992-08-11
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Expires: 2011-04-05
Abstract
Abstract A flexible metal-film laminate can comprise a layered film structure having a metal layer securely bonded to a film layer. The laminate contains a unique metal-oxide attachment structure between the film and metal layer comprising randomly distributed regions of metal-oxide. The peel strength of such a laminate is significantly improved over prior laminates and is resistant to peel strength reduction due to environmental stress. The preferred metal-film laminates made with polyester or polyimide can be used in the manufacture of high-quality, low cost, flexible printed circuit boards.
Inventors
- 👤 Richard L. Swisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:10
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/123; C23; C23C; C23C14/00; C23C14/02; C23C14/021; C23C14/022; C23C14/06; C23C14/08; C23C14/14; C23C14/20; H; H05; H05K; H05K3/00; H05K3/38; H05K3/388; C08J2379/00; C08J2379/04; C08J2379/08; H05K1/00; H05K1/02; H05K1/03; H05K1/0393; H05K2201/00; H05K2201/01; H05K2201/0137; H05K2201/0154; H05K2203/00; H05K2203/09; H05K2203/095; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12472; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12549; Y10T428/12556; Y10T428/12569; Y10T428/12611; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/1291
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
134 words
A metal-film laminate, resistant to the delamination of the metal from the film, which laminate comprises: (a) a film layer having at least one surface bearing a non-continuous random distribution of metal-oxide, said metal-oxide selected from the group consisting of oxides of iron, chromium, nickel, molybdenum, manganese, zirconium or mixtures thereof, said distribution less than 20 atomic layers in thickness; and (b) a metal surface adhered to the film through the random distribution, said metal surface comprising: (i) a first metal layer, formed on the metal-oxide regions by vapor metallization, having a thickness of about 50 to 500 nanometers; and (ii) a second metal layer having a thickness of 0.1 to 40 μm formed on the first metal layer; wherein the peel strength of the metal-film laminate is at least 3 pounds per inch.
Claim 2
Dependent Claim
134 words
A metal-film laminate, resistant to the delamination of the metal from the film, which laminate comprises: (a) a film layer having at least one surface bearing a non-continuous random distribution of metal-oxide, said metal-oxide selected from the group consisting of oxides of iron, chromium, nickel, molybdenum, manganese, zirconium or mixtures thereof, said distribution less than 20 atomic layers in thickness; and (b) a metal surface adhered to the film through the random distribution, said metal surface comprising: (i) a first metal layer, formed on the metal-oxide regions by vapor metallization, having a thickness of about 50 to 500 nanometers; and (ii) a second metal layer having a thickness of 0.1 to 40 μm formed on the first metal layer; wherein the peel strength of the metal-film laminate is at least 3 pounds per inch.
Claim 3
Dependent Claim
42 words
The laminate of claim 1 wherein the metal-oxide regions result from a film treatment with a plasma comprising ionized oxygen, produced from a metallic electrode comprising a metal selected from the group consisting of manganese, chromium, nickel, iron, molybdenum or mixtures thereof.
Claim 4
Dependent Claim
17 words
The laminate of claim 1 wherein the second metal layer is a copper layer formed by electrodeposition.
Claim 5
Dependent Claim
17 words
The laminate of claim 1 wherein the first metal layer comprises aluminum, gold, silver or alloys thereof.
Claim 6
Dependent Claim
12 words
The laminate of claim 3 wherein the first metal layer comprises copper.
Claim 7
Dependent Claim
12 words
The laminate of claim 5 wherein the second metal layer comprises copper.
Claim 8
Dependent Claim
11 words
The laminate of claim 1 wherein the film comprises a thermoplastic.
Claim 9
Dependent Claim
11 words
The laminate of claim 7 wherein the thermoplastic comprises a polyester.
Claim 10
Dependent Claim
12 words
The laminate of claim 1 wherein the film comprises a thermoset resin.
Claim 11
Dependent Claim
11 words
The laminate of claim 1 wherein the film comprises a polyimide.
Claim 12
Dependent Claim
13 words
The process of claim 1 wherein the film comprises a fluorine containing polymer.
Claim 13
Dependent Claim
11 words
The laminate of claim 1 wherein the film comprises a polyetherimide.
Claim 14
Dependent Claim
131 words
A metal-film laminate, resistant to the delamination of the metal from the film, which laminate comprises: (a) a polymeric film; (b) a non-continuous random distribution on the polymeric film, having a thickness of less than 5 atomic layers, said distribution comprising an oxide of a metal selected from the group consisting of chromium, iron, nickel, manganese, molybdenum, zirconium or mixtures thereof; and (c) a metal surface adhered to the film through the random distribution, said surface comprising: (i) a copper metal layer formed by vapor metallization having a thickness of about 50 to 500 nanometers; and (ii) a second metal layer having a thickness of 0.1 to 40 μm formed on the metallized layer; wherein the peel strength of the metal thermoplastic film laminate is at least 3 pounds per inch.
Claim 15
Dependent Claim
131 words
A metal-film laminate, resistant to the delamination of the metal from the film, which laminate comprises: (a) a polymeric film; (b) a non-continuous random distribution on the polymeric film, having a thickness of less than 5 atomic layers, said distribution comprising an oxide of a metal selected from the group consisting of chromium, iron, nickel, manganese, molybdenum, zirconium or mixtures thereof; and (c) a metal surface adhered to the film through the random distribution, said surface comprising: (i) a copper metal layer formed by vapor metallization having a thickness of about 50 to 500 nanometers; and (ii) a second metal layer having a thickness of 0.1 to 40 μm formed on the metallized layer; wherein the peel strength of the metal thermoplastic film laminate is at least 3 pounds per inch.
Claim 16
Dependent Claim
19 words
The laminate of claim 13 wherein the metal-oxide regions result from an oxygen plasma produced from a metallic electrode.
Claim 17
Dependent Claim
14 words
The laminate of claim 13 wherein the second metal layer is formed by electrodeposition.
Claim 18
Dependent Claim
25 words
The laminate of claim 13 wherein the first metal layer comprises a metal selected from the group consisting of gold, silver, aluminum, or alloys thereof.
Claim 19
Dependent Claim
12 words
The laminate of claim 13 wherein the second metal layer comprises copper.
Claim 20
Dependent Claim
21 words
The laminate of claim 13 wherein the metal-oxide regions comprise a chromium-oxide in a thickness of less than 5 atom monolayers.
Claim 21
Dependent Claim
11 words
The laminate of claim 13 wherein the film comprises a thermoplastic.
Claim 22
Dependent Claim
11 words
The laminate of claim 19 wherein the thermoplastic comprises a polyester.
Claim 23
Dependent Claim
10 words
The laminate of claim 20 wherein the polyester comprises poly-ethylene-terephthalate.
Claim 24
Dependent Claim
11 words
The laminate of claim 13 wherein the film comprises a polyimide.
Claim 25
Dependent Claim
11 words
The laminate of claim 13 wherein the film comprises a polyetherimide.
Claim 26
Dependent Claim
131 words
A metal-film laminate, resistant to delamination of the metal from the film, which laminate comprises: (a) a film layer having at least one surface bearing a non-continuous random distribution of metal-oxide, said metal-oxide selected from the group consisting of oxides of iron, chromium, nickel, molybdenum, manganese, zirconium, or mixtures thereof, said distribution less than 5 atomic layers in thickness; and (b) a copper surface adhered to the film through the random distribution, said copper surface comprising: (i) a first copper layer, formed on the metal-oxide regions by vapor metallization, having a thickness of about 50-500 nanometers; and (ii) a second copper layer having a thickness of 0.1 to 40 μm formed on the first copper layer; wherein the peel strength of the copper-film laminate is at least 3 pounds per inch.
Claim 27
Dependent Claim
131 words
A metal-film laminate, resistant to delamination of the metal from the film, which laminate comprises: (a) a film layer having at least one surface bearing a non-continuous random distribution of metal-oxide, said metal-oxide selected from the group consisting of oxides of iron, chromium, nickel, molybdenum, manganese, zirconium, or mixtures thereof, said distribution less than 5 atomic layers in thickness; and (b) a copper surface adhered to the film through the random distribution, said copper surface comprising: (i) a first copper layer, formed on the metal-oxide regions by vapor metallization, having a thickness of about 50-500 nanometers; and (ii) a second copper layer having a thickness of 0.1 to 40 μm formed on the first copper layer; wherein the peel strength of the copper-film laminate is at least 3 pounds per inch.
Claim 28
Dependent Claim
14 words
The laminate of claim 24 wherein the second copper layer is formed by electro-deposition.
Claim 29
Dependent Claim
11 words
The laminate of claim 24 wherein the film comprises a thermoplastic.
Claim 30
Dependent Claim
11 words
The laminate of claim 26 wherein the thermoplastic comprises a polyester.
Claim 31
Dependent Claim
11 words
The laminate of claim 26 wherein the film comprises a polyimide.
Claim 32
Dependent Claim
11 words
The laminate of claim 24 wherein the film comprises a polyetherimide.
References Cited (Backward Citations)
DE1225940B
Cited
US3149021A
Cited
US3477900A
Cited
US3700538A
Cited
US4081578A
Cited
US3981691A
Cited
US4093768A
Cited
US4193849A
Cited
US4153518A
Cited
US4189517A
Cited
DE3017713A1
Cited
EP0041850A2
Cited
US4420509A
Cited
US4414173A
Cited
US4444848A
Cited
US4582564A
Cited
US4402998A
Cited
US4395313A
Cited
US4568413A
Cited
US4524089A
Cited
US4835061A
Cited
US4720401A
Cited
US4597828A
Cited
US4863808A
Cited
US4916016A
Cited
US4886681A
Cited
US4772488A
Cited
WO1989004880A1
Cited
US4913938A
Cited
JPH01305595A
Cited
US5015538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-11 | 1996-02-10 | 1996-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-11 | 2000-02-10 | 2000-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-11 | 2004-02-10 | 2004-08-11 | $7700.00 | Window Closed / Lapsed |