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US 4,048,005 AGranted
Process for producing a laminated metallic sheet
AssigneeNitto Electric Industrial Co., Ltd.
InventorsKeisuke Nakagome, Toshiharu Suzuki
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AssigneeNitto Electric Industrial Co., Ltd.
InventorsKeisuke Nakagome, Toshiharu Suzuki
Estimating the term…
This invention provides a process for producing a heat resistant metallic laminated sheet which is composed of mutually insulated outer metallic sheets or foils and an inner binder layer sandwiched therebetween. In this process, the binder layer is a film of a heat resistant heterocyclic polymer from which volatile matter is substantially removed. The sandwiched structure composed of the outer metallic sheets and the binder film put therebetween is bonded at a temperature range above the heat distortion temperature of the binder film to form the metallic laminated sheet.
In a process for the production of heat resistant laminated articles comprising metallic sheets or foils with a polymer binder film laminated therebetween, the improvement comprising:
In a process for the production of heat resistant laminated articles comprising metallic sheets or foils with a polymer binder film laminated therebetween, the improvement comprising:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
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Comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material: of synthetic resin
Layered products comprising a layer of metal: comprising iron or steel
Layered products comprising a layer of metal: comprising aluminium or copper
Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers: involving heating of the applied adhesive
Term ended 13 Sep 1994 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
This invention relates to a metallic laminated sheet, and more particularly to a process for producing a heat resistant metallic laminated sheet composed of mutually isolated metallic sheets or foils and heat resistant, insulating films of heterocyclic polymer put between the metallic sheets or foils.
2. Description of the Prior Art
According to one embodiment of the process of this invention, a solution of heat resistant heterocyclic polymer is applied to at least one surface of a metallic sheet or foil, and is heated and dried thereon to form a strong film from which the volatile matter is substantially removed.
Thus, a heat resistant film of the heterocyclic polymer is adhered fixedly to the surface of a metallic sheet or foil to be bonded. Then, coated metallic sheets or foils are laminated so that the coated films are brought into intimate contact with each other, and compression is applied to the laminated structure at a temperature in the range higher than the heat distortion temperature of the polymer film, thereby to produce a heat resistant laminated sheet. Each of the polymers to be applied on the metallic sheet surfaces may have mutually different heterocycles.
According to another embodiment of this invention, the metallic sheet or foil coated with the polymer film is laminated to an uncoated metallic sheet or foil, and compression is applied to the laminated structure at a temperature in the range above the heat distortion temperature of the polymer.