Laminated body and method of producing shaped article

Patent metadata

Field	Value
Publication number	US-11040518-B2
Application number	US-201815939391-A
Country	US
Kind code	B2
Filing date	Mar 29, 2018
Priority date	Mar 31, 2017
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

Abstract

Provided is a laminated body of at least one metal foil and resin layers, which is suitable for drawing. The laminated body includes at least one metal foil and at least two resin layers. The laminated body has a thickness of 25 to 500 μm. In the laminated body, both surfaces of each metal foil are closely laminated to the resin layers, and the relationships: 60≤σY≤150, and 1.4≤σb/σY are satisfied, in which σY represents a nominal stress (MPa) at a nominal strain of 5% when a tensile test according to JIS K 7127: 1999 is performed on the laminated body, and σb represents a nominal stress (MPa) at a nominal strain at which the metal foil in the laminated body is broken when a tensile test according to JIS K 7127: 1999 is performed on the laminated body.

First claim

What is claimed is:

1. A laminated body comprising at least one metal foil and at least two resin layers, the at least two resin layers having at least one adhesive layer, the laminated body having a thickness of 25 μm to 500 μm,
wherein both surfaces of each metal foil are laminated to the resin layers with an adhesive strength of 0.2 N/mm or more, respectively; and
wherein the relationships: 60≤Y≤150, and 1.5≤σb/σY are satisfied, in which σY represents a nominal stress (MPa) at a nominal strain of 5% when a tensile test according to JIS K 7127:1999 is performed on the laminated body, and ab represents a nominal stress (MPa) at a nominal strain at which the metal foil in the laminated body is broken when a tensile test according to JIS K 7127:1999 is performed on the laminated body.

2. The laminated body according to claim 1 , wherein the laminated body has an r value (Lankford value) at a logarithmic strain of 0.4 of from 0.7 to 4.0.

3. The laminated body according to claim 1 , wherein the surfaces of the resin layers forming both outermost layers comprise a dynamic friction coefficient of from 0.15 to 0.45.

4. The laminated body according to claim 1 , wherein both sides of each metal foil are laminated to the resin layers with an adhesive strength of 0.6 N/mm or more, respectively.

5. The laminated body according to claim 1 , wherein each metal foil has a thickness of 4 μm to 100 μm.

6. The laminated body according to claim 1 , wherein each resin layer has a thickness of 9 μm to 500 μm.

7. A method of producing a shaped article, comprising molding the laminated body according to claim 1 .

8. The method of producing the shaped article according to claim 7 , wherein the method comprises carrying out the molding by drawing.

Assignees

• Jx Nippon Mining & Metals Corp

Inventors

• Tanaka Koichiro

Classifications

• B32B2307/212

  Electromagnetic interference shielding · CPC title

• B32B25/04

  comprising rubber as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a layer of a particular substance B32B9/043; next to a bituminous or tarry layer B32B11/044; next to a water setting substance layer B32B13/042; next to a metal layer B32B15/06; next to a glass layer B32B17/063; next to a layer formed of natural mineral fibres or particles B32B19/043; next to a wood layer B32B21/045; next to a cellulosic plastic layer B32B23/046)} · CPC title

• B32B2307/54

  Yield strength; Tensile strength · CPC title

• B32B15/082

  comprising vinyl resins; comprising acrylic resins · CPC title

• H05K9/0084

  comprising a single continuous metallic layer on an electrically insulating supporting structure, e.g. metal foil, film, plating coating, electro-deposition, vapour-deposition · CPC title