The invention claimed is:
1. A metal-coated nonwoven fabric with an adhesive layer comprising:
a metal-coated nonwoven fabric; and
an adhesive layer disposed on one surface side of the metal-coated nonwoven fabric,
the metal-coated nonwoven fabric including a nonwoven fabric and a metal portion coating the surface of a fiber in the nonwoven fabric,
an average thickness of the metal portion being 2 μm or less,
an average thickness of the metal-coated nonwoven fabric being 25 μm or less,
an open area ratio of the metal-coated nonwoven fabric being 1% or more and 50% or less.
2. The metal-coated nonwoven fabric with an adhesive layer according to claim 1 , the average thickness of the metal portion being 1 μm or less.
3. The metal-coated nonwoven fabric with an adhesive layer according to claim 1 , a material of the metal portion including nickel, copper or silver.
4. The metal-coated nonwoven fabric with an adhesive layer according to claim 1 , the average thickness of the metal-coated nonwoven fabric being 20 μm or less.
5. The metal-coated nonwoven fabric with an adhesive layer according to claim 1 , the open area ratio of the metal-coated nonwoven fabric being 30% or less.
6. The metal-coated nonwoven fabric with an adhesive layer according to claim 1 , the open area ratio of the metal-coated nonwoven fabric being 3% or more.
7. The metal-coated nonwoven fabric with an adhesive layer according to claim 1 , a glass transition temperature of a material of the nonwoven fabric being 150° C. or higher.
8. The metal-coated nonwoven fabric with an adhesive layer according to claim 1 , the adhesive layer containing a conductive filler.
9. The metal-coated nonwoven fabric with an adhesive layer according to claim 8 , the content of the conductive filler in the adhesive layer being 0.1% by weight or more and 80% by weight or less.
10. A process for producing a metal-coated nonwoven fabric with an adhesive layer according to claim 1 , the process comprising:
a step of compressing an uncompressed nonwoven fabric to obtain an nonwoven fabric having an average thickness of ⅘ or less of an average thickness of the uncompressed nonwoven fabric;
a step of coating a surface of a fiber in the nonwoven fabric with a metal portion to obtain a metal-coated nonwoven fabric; and
a step of disposing an adhesive layer on one surface side of the metal-coated nonwoven fabric to obtain a metal-coated nonwoven fabric with an adhesive layer.
11. The process for producing a metal-coated nonwoven fabric with an adhesive layer according to claim 10 , the uncompressed nonwoven fabric being compressed by calendering treatment.
12. The process for producing a metal-coated nonwoven fabric with an adhesive layer according to claim 10 , the surface of the fiber in the nonwoven fabric being coated with the metal portion by sputtering.
13. A covered core wire comprising:
a core wire; and
a covering portion covering a surface of the core wire,
the covering portion being the metal-coated nonwoven fabric with an adhesive layer according to claim 1 .