Infrared-blocking transparent film

• US 6,261,684 B1
• Filed: 12/17/1998
• Issued: 07/17/2001
• Est. Priority Date: 12/17/1997
• Status: Expired due to Term

• Current Assignee: Tomoegawa Paper Company Limited
• Original Assignee: Tomoegawa Paper Company Limited
• Inventors: Takahashi, Shinichi, Ikegaya, Kazunori
• Primary Examiner(s): Zirker, Daniel
• Assistant Examiner(s): Dean, Frederick G.
• Application Number:
  US09/215,623
• Time in Patent Office: 943 Days
• Field of Search: 428/345, 428/354, 428/328, 428/327, 428/323
• US Class Current: 428/345
• CPC Class Codes: C09D 5/00 Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced electrically insulating plastics, resins or waxes H01B3/30; Filling pastes
• CPC Class Codes: G02B 5/208 for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
• CPC Class Codes: Y10T 428/25 Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• CPC Class Codes: Y10T 428/254 Polymeric or resinous material
• CPC Class Codes: Y10T 428/256 Heavy metal or aluminum or compound thereof
• CPC Class Codes: Y10T 428/2809 including irradiated or wave energy treated component
• CPC Class Codes: Y10T 428/2848 Three or more layers

Abstract

The present invention provides an infrared ray blocking transparent film which can be produced at low cost despite using indium tin oxide powder (which can inhibit metallic luster) and which can exhibit excellent electromagnetic wave transmissivity. An infrared ray blocking layer is provided on at least a surface of a base film, and the infrared ray blocking layer includes indium tin oxide powder and resin in a weight ratio of 90/10 to 60/40.

Claims

1. An infrared ray blocking transparent film comprising a base film, an infrared ray blocking layer provided on at least a surface of said base film, a hard coat layer provided on a front surface of said infrared ray blocking layer, and an adhesive layer provided on a rear surface of said base film, wherein said infrared ray blocking layer includes an indium tin oxide powder and a resin in a weight ratio from 90/10 to 60/40, and said hard coat layer comprises an epoxy-type compound and a photo-cation polymerization initiator.

3. The infrared ray blocking transparent film of claim 1 wherein said infrared ray blocking layer further comprises pigments.

5. The infrared ray blocking transparent film of claim 1 wherein said indium tin oxide powder has a mole ratio of oxygen to indium of 0.5/100 to 10/100.

7. The infrared ray blocking transparent film of claim 3 wherein said indium tin oxide powder has a mole ratio of oxygen to indium of 0.5/100 to 10/100.

2. An infrared blocking transparent film comprising a base film, an infrared ray blocking layer provided on at least a surface of said base film, and an adhesive layer provided on a rear surface of said base film, wherein said infrared ray blocking layer includes an indium tin oxide powder and a resin in a weight ratio from 90/10 to 60/40, and said resin is a hard coat material comprising an epoxy-type compound and a photo-cation polymerization initiator.

4. The infrared ray blocking transparent film of claim 2 wherein said infrared ray blocking layer further comprises pigments.

6. The infrared ray blocking transparent film of claim 2 wherein said indium tin oxide powder has a mole ratio of oxygen to indium of 0.5/100 to 10/100.

8. The infrared ray blocking transparent film of claim 4 wherein said indium tin oxide powder has a mole ratio of oxygen to indium of 0.5/100 to 10/100.