Resin film and method of producing resin film

Patent metadata

Field	Value
Publication number	US-9340681-B2
Application number	US-201313970688-A
Country	US
Kind code	B2
Filing date	Aug 20, 2013
Priority date	Sep 3, 2012
Publication date	May 17, 2016
Grant date	May 17, 2016

Abstract

A resin film according to an embodiment of the present invention includes: a substrate film; and an antistatic layer formed on one side of the substrate film and including a binder resin and a conductive material. The binder resin includes a polyurethane-based resin; the antistatic layer has an arithmetic average surface roughness Ra of 10 nm or more; and the conductive material includes a conductive polymer.

First claim

What is claimed is:

1. A resin film, comprising:
a substrate film; and
an antistatic layer formed on one side of the substrate film and comprising a binder resin, a cross-linking agent in an amount of 1 part by weight to 30 parts by weight with respect to 100 parts by weight of the binder resin and a conductive material,
wherein:
the binder resin comprises a polyurethane-based resin;
the antistatic layer has an arithmetic average surface roughness Ra of 10 nm or more and 100 nm or less; and
the conductive material comprises a conductive polymer
wherein the antistatic layer is formed by applying a resin composition containing the binder resin and the cross-linking agent, and drying the resin composition.

2. A resin film according to claim 1 , wherein the antistatic layer is subjected to a stretching treatment.

3. A resin film according to claim 1 , wherein the substrate film is formed of a polyester-based resin.

4. A resin film according to claim 1 , wherein the conductive polymer comprises a polythiophene-based polymer.

5. A resin film according to claim 1 , wherein the antistatic layer has a surface resistance value of less than 10×10 13 Ω/□.

6. A resin film according to claim 1 , wherein the resin film has a total light transmittance (Tt) of 89% or more.

7. A resin film according to claim 1 , wherein the polyurethane-based resin has a carboxyl group.

8. A resin film according to claim 1 , wherein the antistatic layer is subjected to a stretching treatment and has a surface resistance value of less than 10×10 13 Ω/□, the substrate film is formed of a polyester-based resin, the conductive polymer comprises a polythiophene-based polymer, the polyurethane-based resin has a carboxyl group, and the resin film has a total light transmittance (Tt) of 89% or more.

Assignees

• Nitto Denko Corp

Inventors

• Kitagishi Hitoshi
• Kunikata Satoru
• Miyatake Minoru

Classifications

• C08J7/0427

  with only one layer of a composition containing a polymer binder (with more layers C08J7/042) · CPC title

• B29C55/026

  of preformed plates or sheets coated with a solution, a dispersion or a melt of thermoplastic material · CPC title

• B29K2995/0005

  Conductive · CPC title

• G02B1/16

  having an anti-static effect, e.g. electrically conducting coatings · CPC title

• B05D3/0473

  for heating, e.g. vapour heating · CPC title