Sandwich metal sheet
US-2017136738-A1 · May 18, 2017 · US
Layered composite
US12508778B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12508778-B2 |
| Application number | US-202017781197-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 1, 2020 |
| Priority date | Dec 2, 2019 |
| Publication date | Dec 30, 2025 |
| Grant date | Dec 30, 2025 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
[Object]The purpose of the present invention is to provide a layered composite that is high in both flexural modulus and moldability.[Solving Means]Provided is a layered composite including a carbon-fiber-reinforced resin in which a chopped strand prepreg obtained by impregnating fiber in resin is oriented in such a manner as to exhibit pseudo-isotropic properties, and a steel plate that is layered on at least one surface of the carbon-fiber-reinforced resin and has a tensile breakage elongation φ of equal to or more than 20%, the flexural modulus in a flat plate state obtained in compliance with ASTM D-790 being equal to or more than 30 GPa.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A layered composite comprising: a carbon-fiber-reinforced resin in which a chopped strand prepreg including carbon fiber tow impregnated with resin is oriented in such a manner as to exhibit pseudo-isotropic properties; and a steel plate that is layered on at least one surface of the carbon-fiber-reinforced resin and has a tensile breakage elongation ϕ of equal to or more than 20%, wherein a flexural modulus of the layered composite in a flat plate state obtained in compliance with American Society for Testing and Materials D-790 is equal to or more than 30 GPa, and wherein the steel plate has a value S of the following formula of equal to or more than 7.5, wherein S [mm]=(thickness t [mm] of steel plate×tensile breakage elongation ϕ)/(frictional coefficient μ of steel plate), and the tensile breakage elongation ϕ is expressed in percent. 2 . The layered composite according to claim 1 , wherein a ratio of a thickness of the steel plate to a total thickness of the layered composite is 0.01 to 0.2. 3 . The layered composite according to claim 1 , wherein the steel plate is a surface treated steel plate, and the surface treatment is plating including Zn or Ni. 4 . The layered composite according to claim 1 , wherein a specific flexural modulus of the layered composite is equal to or more than 20 GPa.
Assignees
Inventors
Classifications
Carbon · CPC title
Iron, e.g. steel · CPC title
Flexural strength; Flexion stiffness · CPC title
Yield strength; Tensile strength · CPC title
Reinforcements · CPC title
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- What does patent US12508778B2 cover?
- [Object]The purpose of the present invention is to provide a layered composite that is high in both flexural modulus and moldability.[Solving Means]Provided is a layered composite including a carbon-fiber-reinforced resin in which a chopped strand prepreg obtained by impregnating fiber in resin is oriented in such a manner as to exhibit pseudo-isotropic properties, and a steel plate that is lay…
- Who is the assignee on this patent?
- Toyo Kohan Co Ltd, Suncorona Oda Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B29C70/14. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 30 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).