EP0507332A2
Expired / Lapsed
EP
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Laminate
Assignee: Kuraray Co Ltd
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Filing: 1992-04-03
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Granted: —
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Expires: 2012-04-03
Abstract
Abstract A laminate obtained by placing in layers at least one film comprising a liquid crystal polymer and at least one metal foil and pressing the resulting layers at a temperature in a range of from 80 DEG C below the melting point of said liquid crystal polymer to 5 DEG C below the same melting point. The film layer of the laminate has high mechanical strength. The laminate has good shape with the film layer and the metal layer being firmly bonded to each other and high thermal resistance.
Inventors
- 👤 Koichi Saito
- 👤 Takeichi Tsudaka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 09:31
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/09; B32B27/00; B32B27/36; B32B37/00; B32B37/14; B32B37/24; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; B32B2367/00; B32B2457/00; B32B2457/08; H05K1/032; H05K1/0326; H05K2201/00; H05K2201/01; H05K2201/0137; H05K2201/0141; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
73 words
A laminate comprising a laminated structure obtained by placing in layers at least one film comprising a liquid crystal polymer capable of forming an optically anisotropic melt phase and at least one metal foil and pressing the resulting layers by passing them through a nip between press rolls at a temperature in a range of from 80°C below the melting point of said liquid crystal polymer to 5°C below the same melting point.
Claim 2
Dependent Claim
64 words
A laminate comprising a laminated structure obtained by placing in layers at least one single-layer film comprising a liquid crystal polymer capable of forming optically anisotropic melt phase and at least one metal foil and pressing the resulting layers at a temperature in a range of from 80°C below the melting point of said liquid crystal polymer to 5°C below the same melting point.
Claim 3
Dependent Claim
46 words
A laminate according to Claim 1 or 2, wherein said film and said metal foil are heat pressed under a pressure as converted into a linear pressure of at least 5 kg/cm or a pressure as converted into an areal pressure of at least 20 kg/cm².
Claim 4
Dependent Claim
56 words
A laminate according to any one of Claims 1 to 3, wherein said liquid crystal polymer is a thermotropic liquid crystal polyester consisting essentially of the following structural units (I) and (II) with the molar ratio between the structural unit (I) and the structural unit (II), [(I)/(II)], being in a range of from 90/10 to 10/90.
Claim 5
Dependent Claim
72 words
A process for producing laminates which comprises placing in layers at least one film comprising a liquid crystal polymer capable of forming an optically anisotropic melt phase and at least one metal foil and pressing the resulting layers by passing them through a nip between press rolls at a temperature in a range of from 80°C below the melting point of said liquid crystal polymer to 5°C below the same melting point.
Claim 6
Dependent Claim
44 words
A process according to Claim 5, wherein said film and said metal foil are heat pressed under a pressure as converted into a linear pressure of at least 5 kg/cm or a pressure as converted into an areal pressure of at least 20 kg/cm².
Claim 7
Dependent Claim
29 words
A process according to Claim 5 or 6, wherein said press rolls include at least one roll with a rubber surface having a hardness of at least 80 degrees.
Claim 8
Dependent Claim
56 words
A process according to any one of Claims 5 to 7, wherein said liquid crystal polymer is a thermotropic liquid crystal polyester consisting essentially of the following structural units (I) and (II) with the molar ratio between the structural unit (I) and the structural unit (II), [(I)/(II)], being in a range of from 90/10 to 10/90.
Claim 9
Dependent Claim
47 words
A flexible printed wiring board obtained by chemically etching the laminate of Claim 1 or 2 and comprising a structure that comprises a film comprising a liquid crystal polymer and a metal foil forming electric circuit, said film and said metal foil being laminated with each other.
References Cited (Backward Citations)
No citation records indexed.
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