Composite and method for producing the same

Patent metadata

Field	Value
Publication number	US-10532545-B2
Application number	US-201515306001-A
Country	US
Kind code	B2
Filing date	Apr 20, 2015
Priority date	Apr 22, 2014
Publication date	Jan 14, 2020
Grant date	Jan 14, 2020

Abstract

It is an object to provide a composite in which the adhesion between a sheet layer and a curable resin layer or a film layer is high, and which has high strength and high transparency. The present invention provides a composite wherein a curable resin layer or a film layer is laminated on the one or both surfaces of the sheet layer with a covering layer interposed therebetween, the sheet layer containing fine fibers with an average fiber width of 2 to 1000 nm.

First claim

The invention claimed is:

1. A composite comprising a sheet layer and one of a curable resin layer or a film layer formed on one or both surfaces of the sheet layer, the sheet layer containing as a main component fine fibers with an average fiber width of 2 to 1000 nm,
wherein the sheet layer comprises a hydrophilic polymer or a hydrophilic low-molecular weight compound;
wherein the sheet layer is a nonwoven fabric; and
wherein a density of the sheet layer is greater than or equal to 0.90 g/cm 3 and is less than or equal to 1.60 g/cm 3 .

2. The composite according to claim 1 , wherein the one of the curable resin layer or the film layer is laminated on the one or both surfaces of the sheet layer with a covering layer interposed therebetween, the covering layer being provided on one or both surfaces of the sheet layer.

3. The composite according to claim 1 , wherein a haze is less than or equal to 3%.

4. The composite according to claim 2 , wherein a haze is less than or equal to 3%.

5. The composite according to claim 1 , wherein the average fiber width of the fine fibers is 2 to 100 nm.

6. The composite according to claim 1 , wherein the fine fibers are fibers comprising cellulose fibers.

7. The composite according to claim 2 wherein a thickness of the sheet layer is 2 to 150 μm, a thickness per covering layer is 0.1 to 30 μm, and a thickness per curable resin layer or film layer is 0.2 to 100 μm.

8. The composite according to claim 2 , wherein an adhesion between the sheet layer and the curable resin layer or the film layer, in terms of a number of peeled cells out of 100 cells in a cross-cut test conducted in accordance with JIS K 5400, is less than or equal to 10.

9. The composite according to claim 2 , wherein a total luminous transmittance is greater than or equal to 85%, and a haze is less than or equal to 10%.

10. The composite according to claim 2 , wherein the covering layer is a hybrid material of an organic component and an inorganic component.

11. The composite according to claim 10 , wherein the hybrid material of the organic component and the inorganic component contains an organic component and an inorganic component having a silicone skeleton.

12. The composite according to claim 10 , wherein the organic component is at least one component selected from the group consisting of a methyl group, a mercapto group, a methacryl group, an acryloyl group, a vinyl group, and an amino group.

13. The composite according to claim 10 , wherein the hybrid material of the organic compound and the inorganic compound is silsesquioxane.

14. The composite according to claim 2 , wherein the covering layer contains at least one type of resin selected from the group consisting of heat-curable resin, thermoplastic resin, and photo-curable resin.

15. The composite according to claim 2 , wherein the covering layer is an adhesive.

16. An illumination device, a projection device, a signboard or an image display device, a touch panel, or a solar cell, which comprises the composite according to claim 1 .

Assignees

• Oji Holdings Corp

Inventors

• FUSHIMI Hayato
• Mikami Eiichi
• Tanaka Hiroki
• Han Jintong

Classifications

• D21H11/20

  Chemically or biochemically modified fibres · CPC title

• B32B2590/00

  Signboards, advertising panels, road signs · CPC title

• B32B2457/204

  Plasma displays · CPC title

• B32B2457/208

  Touch screens · CPC title

• B32B2457/206

  Organic displays, e.g. OLED · CPC title