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US4499157A Expired / Lapsed US ⏱️ 0.0 years remaining

Solderable plated plastic components and processes for manufacture and soldering

Assignee: Raytheon Co
•
Filing: 1983-05-31
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Granted: 1985-02-12
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Expires: 2003-05-31
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Abstract

Abstract A particular plastic material is formed into the desired component shape and then is plated by a process comprising; a particular surface preparation step, electroless deposition and electrolytic deposition which results in excellent plating adhesion. The plated component is then assembled with other components manufactured in the same manner or with compatible metal components such as aluminum and soldered together in a disclosed hot oil dip soldering process. In the soldering process, the plated plastic substrate is completely immersed in a hot oil medium at a temperature of approximately 243 DEG C. (470 DEG F.) for a time of approximately 60 seconds for solder reflow.

Inventors

  • 👤 Richard R. Mulliner
  • 👤 James S. Ajioka

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 15:20
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/22; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/0373; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/38; H05K3/381; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528; Y10T428/12535; Y10T428/12556; Y10T428/31504; Y10T428/31533; Y10T428/31678; Y10T428/31681

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 168 words
A metal plated plastic article for assembly with compatible articles including metallic articles, the assembly comprising soldering by a hot oil dip soldering process or a vapor phase soldering process, the metal plated plastic article comprising: a substrate comprising polyethersulfone impregnated with a selected amount of glass fill with chopped fibers, the amount selected so that the coefficient of thermal expansion of the polyethersulfone with glass fill is compatible with that of the metallic article to which it is to be assembled; the surface of the substrate being physically and chemically altered prior to plating so as to accept a metal plating with a peel strength capable of withstanding a total immersion of the metal plated plastic article in a medium having a temperature of at least 232° C. for at least 60 seconds without delamination of the plating; and metal plating on the substrate comprising a first layer of metal chemically deposited on the substrate and a second layer of metal electrolytically deposited on the first layer.
Claim 2
Dependent Claim 168 words
A metal plated plastic article for assembly with compatible articles including metallic articles, the assembly comprising soldering by a hot oil dip soldering process or a vapor phase soldering process, the metal plated plastic article comprising: a substrate comprising polyethersulfone impregnated with a selected amount of glass fill with chopped fibers, the amount selected so that the coefficient of thermal expansion of the polyethersulfone with glass fill is compatible with that of the metallic article to which it is to be assembled; the surface of the substrate being physically and chemically altered prior to plating so as to accept a metal plating with a peel strength capable of withstanding a total immersion of the metal plated plastic article in a medium having a temperature of at least 232° C. for at least 60 seconds without delamination of the plating; and metal plating on the substrate comprising a first layer of metal chemically deposited on the substrate and a second layer of metal electrolytically deposited on the first layer.
Claim 3
Dependent Claim 40 words
The metal plated plastic article of claim 1 wherein the amount of glass fill with chopped fibers is selected to be approximately 30 percent whereby the coefficient of thermal expansion of the polyethersulfone with glass fill is compatible with aluminum.
Claim 4
Dependent Claim 170 words
A metal plated plastic article for assembly with compatible articles including metallic articles, the assembly comprising soldering by a hot oil dip soldering process or a vapor phase soldering process, the metal plated plastic article comprising: a substrate comprising polyphenylene sulfide impregnated with a selected amount of glass fill with chopped fibers, the amount selected so that the coefficient of thermal expansion of the polyphenylene sulfide with glass fill is compatible with that of the metallic article to which it is to be assembled; the surface of the substrate being physically and chemically altered prior to plating so as to accept a metal plating with a peel strength capable of withstanding a total immersion of the metal plated plastic article in a medium having a temperature of at least 232° C. for at least 60 seconds without delamination of the plating; and metal plating on the substrate comprising a first layer of metal chemically deposited on the substrate and a second layer of metal electrolytically deposited on the first layer.
Claim 5
Dependent Claim 170 words
A metal plated plastic article for assembly with compatible articles including metallic articles, the assembly comprising soldering by a hot oil dip soldering process or a vapor phase soldering process, the metal plated plastic article comprising: a substrate comprising polyphenylene sulfide impregnated with a selected amount of glass fill with chopped fibers, the amount selected so that the coefficient of thermal expansion of the polyphenylene sulfide with glass fill is compatible with that of the metallic article to which it is to be assembled; the surface of the substrate being physically and chemically altered prior to plating so as to accept a metal plating with a peel strength capable of withstanding a total immersion of the metal plated plastic article in a medium having a temperature of at least 232° C. for at least 60 seconds without delamination of the plating; and metal plating on the substrate comprising a first layer of metal chemically deposited on the substrate and a second layer of metal electrolytically deposited on the first layer.
Claim 6
Dependent Claim 41 words
The metal plated plastic article of claim 3 wherein the amount of glass fill with chopped fibers is selected to be approximately 40 percent whereby the coefficient of thermal expansion of the polyphenylene sulfide with glass fill is compatible with aluminum.
Claim 7
Dependent Claim 168 words
A metal plated plastic article for assembly with compatible articles including metallic articles, the assembly comprising soldering by a hot oil dip soldering process or a vapor phase soldering process, the metal plated plastic article comprising: a substrate comprising polyimide-polyamide impregnated with a selected amount of glass fill with chopped fibers, the amount selected so that the coefficient of thermal expansion of the polyimide-polyamide with glass fill is compatible with that of the metalic article to which it is to be assembled; the surface of the substrate being physically and chemically altered prior to plating so as to accept a metal plating with a peel strength capable of withstanding a total immersion of the metal plated plastic article in a medium having a temperature of at least 232° C. for at least 60 seconds without delamination of the plating; and metal plating on the substrate comprising a first layer of metal chemically deposited on the substrate and a second layer of metal electrolytically deposited on the first layer.
Claim 8
Dependent Claim 168 words
A metal plated plastic article for assembly with compatible articles including metallic articles, the assembly comprising soldering by a hot oil dip soldering process or a vapor phase soldering process, the metal plated plastic article comprising: a substrate comprising polyimide-polyamide impregnated with a selected amount of glass fill with chopped fibers, the amount selected so that the coefficient of thermal expansion of the polyimide-polyamide with glass fill is compatible with that of the metalic article to which it is to be assembled; the surface of the substrate being physically and chemically altered prior to plating so as to accept a metal plating with a peel strength capable of withstanding a total immersion of the metal plated plastic article in a medium having a temperature of at least 232° C. for at least 60 seconds without delamination of the plating; and metal plating on the substrate comprising a first layer of metal chemically deposited on the substrate and a second layer of metal electrolytically deposited on the first layer.
Claim 9
Dependent Claim 40 words
The metal plated plastic article of claim 5 wherein the amount of glass fill with chopped fibers is selected to be approximately 40 percent whereby the coefficient of thermal expansion of the polyimidepolyamide with glass fill is compatible with aluminum.

References Cited (Backward Citations)

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US3953653A Cited
US4248921A Cited
US4192764A Cited
US4296217A Cited
DE2904200A1 Cited
GB2015414A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-02-12 1988-08-13 1989-02-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-02-12 1992-08-13 1993-02-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-02-12 1996-08-13 1997-02-12 $7700.00 Window Closed / Lapsed

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