Flexible metal-clad laminates and preparation of the same

1. Field of the Invention A flexible metal foil laminate sheet wherein a polyimide layer comprises a polyimide laminate having a three-layer structure in which thermoplastic polyimide layers are formed on both the surfaces of a polyimide film; metal foil layers are heated and pressed against both th...

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Main Authors Kitahara, Mikio, Mori, Minehiro, Mineta, Naoshi, Kayama, Takashi
Format Patent
LanguageEnglish
Published 22.01.2002
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Abstract 1. Field of the Invention A flexible metal foil laminate sheet wherein a polyimide layer comprises a polyimide laminate having a three-layer structure in which thermoplastic polyimide layers are formed on both the surfaces of a polyimide film; metal foil layers are heated and pressed against both the sides of the polyimide laminate; and the thickness of the thermoplastic polyimide layer is 100% or more of an average roughness at 10 points on the surface of the metal foil which contacts the thermoplastic polyimide layer; and a method for manufacturing the flexible metal foil laminate sheet. According to the present invention, there can be manufactured the flexible metal foil laminate sheet in which a necessary and sufficient adhesive force is present in an interface between a metal foil and an insulating layer and which is excellent in heat resistance, chemical resistance, electrical properties and the like.
AbstractList 1. Field of the Invention A flexible metal foil laminate sheet wherein a polyimide layer comprises a polyimide laminate having a three-layer structure in which thermoplastic polyimide layers are formed on both the surfaces of a polyimide film; metal foil layers are heated and pressed against both the sides of the polyimide laminate; and the thickness of the thermoplastic polyimide layer is 100% or more of an average roughness at 10 points on the surface of the metal foil which contacts the thermoplastic polyimide layer; and a method for manufacturing the flexible metal foil laminate sheet. According to the present invention, there can be manufactured the flexible metal foil laminate sheet in which a necessary and sufficient adhesive force is present in an interface between a metal foil and an insulating layer and which is excellent in heat resistance, chemical resistance, electrical properties and the like.
Author Mineta, Naoshi
Kayama, Takashi
Mori, Minehiro
Kitahara, Mikio
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References Tabayashi et al. (5262227) 19931100
Chen et al. (5306741) 19940400
Yamamoto et al. (6251507) 20010600
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Snippet 1. Field of the Invention A flexible metal foil laminate sheet wherein a polyimide layer comprises a polyimide laminate having a three-layer structure in which...
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Title Flexible metal-clad laminates and preparation of the same
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