Laminate, its manufacturing method, and gate seal

Patent metadata

Field	Value
Publication number	US-11220089-B2
Application number	US-201816495423-A
Country	US
Kind code	B2
Filing date	Mar 22, 2018
Priority date	Mar 30, 2017
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

Provided are a laminate including a metal substrate having a surface with an anodic oxide coating formed thereon, a fluororesin layer laminated in contact with the anodic oxide coating and a fluoroelastomer layer laminated in contact with a surface of the fluororesin layer facing away from the metal substrate, and a gate seal including the laminate.

First claim

The invention claimed is:

1. A laminate comprising:
a metal substrate having a surface with an anodic oxide coating formed thereon;
a fluororesin layer, consisting of fluororesin, fusion-bonded to the anodic oxide coating; and
a fluoroelastomer layer laminated in contact with a surface of the fluororesin layer facing away from the metal substrate.

2. The laminate according to claim 1 , wherein the fluoroelastomer layer includes a crosslinked product of a crosslinkable perfluoroelastomer.

3. The laminate according to claim 1 , wherein the anodic oxide coating has an arithmetic average roughness Ra, as defined in JIS B 0601: 1994, of 0.05 to 100 μm.

4. The laminate according to claim 1 , wherein the metal substrate includes aluminum.

5. A gate seal comprising the laminate according to claim 1 .

6. A method for manufacturing a laminate, comprising:
providing a metal substrate having a surface with an anodic oxide coating formed thereon;
fusion-bonding a fluororesin layer, consisting of fluororesin, on a surface of the anodic oxide coating;
forming a layer including a crosslinkable fluoroelastomer on a surface of the fluororesin layer facing away from the metal substrate; and
crosslinking the layer including the crosslinkable fluoroelastomer to form a fluoroelastomer layer.

7. The method for manufacturing a laminate according to claim 6 , wherein forming the fluororesin layer includes disposing fused fluororesin on a surface of the anodic oxide coating and subsequently solidifying the disposed, fused fluororesin.

8. The method for manufacturing a laminate according to claim 6 , wherein the crosslinkable fluoroelastomer is a crosslinkable perfluoroelastomer.

9. The method for manufacturing a laminate according to claim 6 , wherein the anodic oxide coating has an arithmetic average roughness Ra, as defined in JIS B 0601: 1994, of 0.05 to 100 μm.

10. The method for manufacturing a laminate according to claim 6 , wherein the metal substrate includes aluminum.

Assignees

• Valqua Ltd

Inventors

• Yoshida Nobuhiro
• Noguchi Masayuki
• Kinoshita Hiromi

Classifications

• H10P72/0466

  characterised by the construction of the load-lock chamber · CPC title

• B32B15/18

  comprising iron or steel {(B32B15/011, B32B15/012 and B32B15/013 take precedence)} · CPC title

• B32B2307/538

  Roughness · CPC title

• C25D11/243

  using organic dyestuffs · CPC title

• B32B25/08

  of synthetic resin · CPC title