EP0395871A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Protected conductive foil and procedure for protecting an electrodeposited metallic foil during further processing
Assignee: Gould Electronics Inc
•
Filing: 1990-03-22
•
Granted: —
•
Expires: 2010-03-22
Abstract
Abstract A conductive copper foil (20) for use in preparing printed circuit boards is protected from damage during storage, shipment and further processing by covering one side of the foil with a sheet of polyethylene film (24). The film is removably joined with the foil by an adhesive material (36) placed between the film and the foil in a marginal area of the latter (32). The film is selected to be sufficiently resistant to laminating temperature and pressure conditions so as to remain in its covering, protecting relationship to the foil and avoid sticking to the laminating press plate and retain its removability from the foil after lamination.
Inventors
- 👤 D. Savage.Rolland
- 👤 John P. Callahan
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 09:35
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/06; B32B15/00; B32B15/04; B32B15/08; H; H05; H05K; H05K3/00; H05K3/46; B32B15/20; B32B27/00; B32B27/36; B32B37/00; B32B37/0007; B32B7/12; B32B7/14; H05K3/02; H05K3/022; B32B2307/00; B32B2307/20; B32B2307/202; B32B2307/204; B32B2310/00; B32B2310/021; B32B2310/025; B32B2311/00; B32B2311/12; B32B2367/00; B32B2457/00; B32B2457/08; H05K3/025
Claims Analysis
Total Claims: 61
Claim 1
Independent Claim
138 words
A protected conductive foil assemblage comprising: a conductive metallic foil having two side, one side of the foil being adapted for bonding to a dielectric support during a lamination process involving pressing between plates of a laminating press; and a plastic film layer overlying the other side of the foil in covering, protecting relationship thereto, said plastic film layer being removably joined to the foil sufficiently to permit movement and further processing of the foil with the film layer remaining in said covering, protecting relationship to said other side of the foil, said plastic film being sufficiently resistant to the temperature and pressure conditions encountered during a lamination process to avoid sticking to a laminating press plate and to retain its removability from the other side of the foil after lamination of the foil to a dielectric support.
Claim 2
Dependent Claim
138 words
A protected conductive foil assemblage comprising: a conductive metallic foil having two side, one side of the foil being adapted for bonding to a dielectric support during a lamination process involving pressing between plates of a laminating press; and a plastic film layer overlying the other side of the foil in covering, protecting relationship thereto, said plastic film layer being removably joined to the foil sufficiently to permit movement and further processing of the foil with the film layer remaining in said covering, protecting relationship to said other side of the foil, said plastic film being sufficiently resistant to the temperature and pressure conditions encountered during a lamination process to avoid sticking to a laminating press plate and to retain its removability from the other side of the foil after lamination of the foil to a dielectric support.
Claim 3
Dependent Claim
47 words
A protected foil assemblage as set forth in claim 1, wherein said metallic foil, has a peripheral marginal area and said assemblage includes an adhesive disposed between said film layer and said other side at said marginal area for removably joining the foil and the plastic layer.
Claim 4
Dependent Claim
23 words
A protected foil assemblage as set forth in claim 2, wherein said adhesive is arranged in a series of spots in said area.
Claim 5
Dependent Claim
48 words
A protected film assemblage as set forth in claim 1, wherein said foil and said film layer are coextensive in at least one dimension to present a common edge and said assemblage includes an adhesive disposed at said common edge for releasably joining the foil and plastic layer.
Claim 6
Dependent Claim
40 words
A protected film assemblage as set forth in claim 1, wherein said foil is an electrodeposited foil having a matte side and a shiny side, said one side being the matte side and said other side being the shiny side.
Claim 7
Dependent Claim
42 words
A protected foil assemblage as set forth in claim 5, wherein said shiny side has been treated for enhanced lamination bond strength between the shiny side and a dielectric support and said plastic film is removable after laminating without disturbing said treatment.
Claim 8
Dependent Claim
44 words
A protected foil assemblage as set forth in claim 6, wherein said plastic film layer is sufficiently transparent to permit visual inspection of the treatment on the shiny side of the metallic foil while said film layer is in said covering, protecting relationship thereto.
Claim 9
Dependent Claim
41 words
A protected foil assemblage as set forth in claim 1, wherein said plastic film layer is sufficiently transparent to permit visual inspection of the other side of the metallic foil while said film layer is in said covering, protecting relationship thereto.
Claim 10
Dependent Claim
41 words
A protected foil assemblage as set forth in claim 1, 3, 4, 5, 6, 7 or 8, wherein said foil and said film layer are in the form of webs and are wound up together in the form of a roll.
Claim 11
Dependent Claim
52 words
A protected foil assemblage as set forth in claim 1, 3, 4, 5, 6, 7 or 8, wherein said foil and said plastic film layer are coextensive in size and said assemblage includes a coextensively sized dielectric support layer containing a curable laminating resin disposed against said one side of the foil.
Claim 12
Dependent Claim
37 words
A protected foil assemblage as set forth in claim 1, 3, 4, 5, 6, 7 or 8, wherein said plastic film layer has a thickness in the range of from about 0.5 mil to about 5.0 mils.
Claim 13
Dependent Claim
24 words
A protected foil assemblage as set forth in claim 11, wherein said plastic film layer has a thickness of about 2.0 mils or less.
Claim 14
Dependent Claim
42 words
A protected foil assemblage as set forth in claim 1, 3, 4, 5, 6, 7 or 8, wherein said plastic film layer is capable of being exposed to the conditions encountered in a laminating press without releasing chemicals which contaminate the foil.
Claim 15
Dependent Claim
22 words
A protected foil assemblage as set forth in claim 1, 3, 4, 5, 6, 7 or 8, wherein said foil comprises copper.
Claim 16
Dependent Claim
16 words
A protected assemblage as set forth in claim 14, wherein said plastic film comprises a polyester.
Claim 17
Dependent Claim
16 words
A protected assemblage as set forth in claim 15, wherein said polyester comprises a polyethylene terphthalate.
Claim 18
Dependent Claim
24 words
A protected assemblage as set forth in claim 1, 3, 4, 5, 6, 7 or 8, wherein said plastic film layer comprises a polyester.
Claim 19
Dependent Claim
16 words
A protected assemblage as set forth in claim 17, wherein said polyester comprises a polyethylene terphthalate.
Claim 20
Dependent Claim
160 words
A procedure for protecting an electrodeposited conductive metallic foil during further processing comprising: providing a piece of conductive foil having two sides, one side of the foil being adapted for bonding to a dielectric support by a lamination process involving pressing between plates of a laminating press; providing a layer of plastic film; placing said layer of film over the other side of said piece of metallic foil in covering, protecting relationship to said other side; and removably joining said layer of film with the metallic foil sufficiently to permit movement and further processing of the foil with the film layer remaining in said covering, protecting relationship to said other side of the foil, said plastic film being sufficiently resistant to the temperature and pressure conditions encountered during a lamination process to avoid sticking to a laminating press plate and to retain its removability from the other side of the foil after lamination of the foil to a dielectric support.
Claim 21
Dependent Claim
160 words
A procedure for protecting an electrodeposited conductive metallic foil during further processing comprising: providing a piece of conductive foil having two sides, one side of the foil being adapted for bonding to a dielectric support by a lamination process involving pressing between plates of a laminating press; providing a layer of plastic film; placing said layer of film over the other side of said piece of metallic foil in covering, protecting relationship to said other side; and removably joining said layer of film with the metallic foil sufficiently to permit movement and further processing of the foil with the film layer remaining in said covering, protecting relationship to said other side of the foil, said plastic film being sufficiently resistant to the temperature and pressure conditions encountered during a lamination process to avoid sticking to a laminating press plate and to retain its removability from the other side of the foil after lamination of the foil to a dielectric support.
Claim 22
Dependent Claim
47 words
A procedure as set forth in claim 19, wherein said piece of metallic foil is provided with a peripheral marginal area and said joining step includes the placement of an adhesive between the layer of film and said other side of the foil at said marginal area.
Claim 23
Dependent Claim
26 words
A procedure as set forth in claim 20, wherein said placement of the adhesive comprises arranging the adhesive in a series of spots in said area.
Claim 24
Dependent Claim
45 words
A procedure as set forth in claim 19, wherein said piece of foil and said film layer are provided to be coextensive in at least one dimension to present a common edge and said removably joining step comprises placing an adhesive at said common edge.
Claim 25
Dependent Claim
38 words
A procedure as set forth in claim 19, wherein said foil is an electrodeposited foil having a matte side and a shiny side, said one side being the matte side and said other side being the shiny side.
Claim 26
Dependent Claim
44 words
A procedure as set forth in claim 23, wherein is included the step of treating said shiny side for enhanced lamination bond strength between the shiny side and a dielectric support, said layer of plastic film being removable after laminating without disturbing said treatment.
Claim 27
Dependent Claim
45 words
A procedure as set forth in claim 24, wherein said plastic film layer is provided to be sufficiently transparent to permit visual inspection of the treatment on the shiny side of the metallic foil while said film layer is in said covering, protecting relationship thereto.
Claim 28
Dependent Claim
43 words
A procedure as set forth in claim 19, wherein said layer of plastic film is provided to be sufficiently transparent to permit visual inspection of the other side of the metallic foil while said film layer is in said covering, protecting relationship thereto.
Claim 29
Dependent Claim
52 words
A procedure as set forth in claim 19, 21, 22, 23, 24, 25 or 26, wherein said piece of foil and said film layer are in the form of webs and said procedure includes the step of winding the foil and the film layer up together in the form of a roll.
Claim 30
Dependent Claim
62 words
A procedure as set forth in claim 19, 21, 22, 23, 24, 25 or 26, wherein said piece of foil and said plastic film layer are coextensive in size and said procedure includes the step of providing a coextensively sized dielectric support layer containing a curable laminating resin and placing said support layer against said one side of the piece of foil.
Claim 31
Dependent Claim
34 words
A procedure as set forth in claim 19, 21, 22, 23, 24, 25 or 26, wherein said plastic film layer has a thickness in the range of from about 0.5 to about 5.0 mils.
Claim 32
Dependent Claim
21 words
A procedure as set forth in claim 29, wherein said plastic film has a thickness of about 2.0 mils or less.
Claim 33
Dependent Claim
40 words
A procedure as set forth in claim 19, 21, 22, 23, 24, 25 or 26, wherein said plastic film layer is capable of being exposed to the conditions encountered in a laminating press without releasing chemicals which contaminate the foil.
Claim 34
Dependent Claim
24 words
A procedure as set forth in claim 19, 21, 22, 23, 24, 25 or 26, wherein said foil is provided as a copper foil.
Claim 35
Dependent Claim
19 words
A procedure as set forth in claim 32, wherein said plastic film layer is provided as a polyester film.
Claim 36
Dependent Claim
17 words
A metallic foil protecting procedure as set forth in claim 33, wherein said polyester comprises polyethylene terphthalate.
Claim 37
Dependent Claim
26 words
A procedure as set forth in claim 19, 21, 22, 23, 24, 25 or 26, wherein said plastic film layer is provided as a polyester film.
Claim 38
Dependent Claim
14 words
A procedure as set forth in claim 35, wherein said polyester comprises polyethylene terphthalate.
Claim 39
Dependent Claim
145 words
A protected conductive foil laminate comprising: a conductive metallic foil having two sides; a plastic film layer overlying one side of the foil in covering, protecting relationship thereto; and a dielectric support bound to the other side of the foil as a result of having undergone a lamination process involving pressing between plates of a laminating press, said plastic film layer being removably joined to the foil sufficiently to permit movement and further processing of the foil with the film layer remaining in said covering, protecting relationship to said other side of the foil, said plastic film being characterized as having initially been sufficiently resistant to the temperature and pressure conditions encountered during the lamination process to avoid sticking to a laminating press plate and to retain its removability from the other side of the foil after lamination of the foil to said dielectric support.
Claim 40
Dependent Claim
145 words
A protected conductive foil laminate comprising: a conductive metallic foil having two sides; a plastic film layer overlying one side of the foil in covering, protecting relationship thereto; and a dielectric support bound to the other side of the foil as a result of having undergone a lamination process involving pressing between plates of a laminating press, said plastic film layer being removably joined to the foil sufficiently to permit movement and further processing of the foil with the film layer remaining in said covering, protecting relationship to said other side of the foil, said plastic film being characterized as having initially been sufficiently resistant to the temperature and pressure conditions encountered during the lamination process to avoid sticking to a laminating press plate and to retain its removability from the other side of the foil after lamination of the foil to said dielectric support.
Claim 41
Dependent Claim
40 words
A protected foil laminate as set forth in claim 37, wherein said foil is an electrodeposited foil having a matte side and a shiny side, said one side being the matte side and said other side being the shiny side.
Claim 42
Dependent Claim
41 words
A protected foil laminate as set forth in claim 38, wherein said shiny side has been treated for enhanced lamination bond strength between the shiny side and a second dielectric support and said plastic film is removable without disturbing said treatment.
Claim 43
Dependent Claim
45 words
A protected foil laminate as set forth in claim 39, wherein said plastic film layer is sufficiently transparent to permit visual inspection of the shiny side of the metallic foil and the treatment thereon while said film layer is in said covering, protecting relationship thereto.
Claim 44
Dependent Claim
41 words
A protected foil laminate as set forth in claim 37, wherein said plastic film layer is sufficiently transparent to permit visual inspection of the other side of the metallic foil while said film layer is in said covering, protecting relationship thereto.
Claim 45
Dependent Claim
33 words
A protected foil laminate as set forth in claim 37, 38, 39, 40 or 41, wherein said plastic film layer has a thickness in the range from about 0.5 to about 5.0 mils.
Claim 46
Dependent Claim
22 words
A protected foil laminate as set forth in claim 42, wherein said layer has a thickness of about 2.0 mil or less.
Claim 47
Dependent Claim
45 words
A protected foil laminate as set forth in claim 37, 38, 39, 40 or 41, wherein said plastic film layer is characterized as having initially been capable of being exposed to the conditions encountered in a laminating press without releasing chemicals which contaminate the foil.
Claim 48
Dependent Claim
20 words
A protected foil laminate as set forth in claim 37, 38, 39, 40 or 41, wherein said foil comprises copper.
Claim 49
Dependent Claim
16 words
A protected laminate as set forth in claim 45, wherein said plastic film comprises a polyester.
Claim 50
Dependent Claim
16 words
A protected laminate as set forth in claim 46, wherein said polyester comprises a polyethylene terphthalate.
Claim 51
Dependent Claim
21 words
A protected laminate as set forth in claim 37, 38, 39, 40 or 41, wherein said plastic film comprises a polyester.
Claim 52
Dependent Claim
16 words
A protected laminate as set forth in claim 48, wherein said polyester comprises a polyethylene terphthalate.
Claim 53
Dependent Claim
16 words
A protected laminate as set forth in claim 37, wherein said foil comprises a wrought foil.
Claim 54
Dependent Claim
15 words
A procedure as set forth in claim 19, wherein said foil comprises a wrought foil.
Claim 55
Dependent Claim
18 words
A protected conductive foil assemblage as set forth in claim 1, wherein said foil comprises a wrought foil.
Claim 56
Dependent Claim
14 words
A protected laminate as set forth in claim 37, wherein said foil comprises nickel.
Claim 57
Dependent Claim
13 words
A procedure as set forth in claim 19, wherein said foil comprises nickel.
Claim 58
Dependent Claim
16 words
A protected conductive foil assemblage as set forth in claim 1, wherein said foil comprises nickel
Claim 59
Dependent Claim
16 words
A protected laminate as set forth in claim 37, wherein said foil comprises a clad foil.
Claim 60
Dependent Claim
15 words
A procedure as set forth in claim 19, wherein said foil comprises a clad foil.
Claim 61
Dependent Claim
18 words
A protected conductive foil assemblage as set forth in claim 1, wherein said foil comprises a clad foil.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.