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Resin film with adhesive layer, laminated film, and touchpanel

An adhesive layer and resin film technology, applied in synthetic resin layered products, film/sheet adhesives, adhesives, etc., can solve the problem of whitening of transparent conductive laminated films, achieve good appearance, inhibit whitening , the effect of good adhesion

Active Publication Date: 2013-06-12
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when a transparent resin film such as polyethylene terephthalate is used as a transparent film substrate used for a transparent conductive laminated film, there is a factor of low molecular components (oligomers) contained in the transparent film substrate. Precipitation by heating, whitening of transparent conductive laminated film

Method used

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  • Resin film with adhesive layer, laminated film, and touchpanel
  • Resin film with adhesive layer, laminated film, and touchpanel
  • Resin film with adhesive layer, laminated film, and touchpanel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] (Formation of hard coat layer)

[0106] As a hard coat forming material, a solution was prepared by adding 5 parts by weight of 1- Hydroxy-cyclohexyl-phenyl ketone (IRGACURE184, manufactured by Seba Special Chemicals Co., Ltd.), a toluene solution diluted to a concentration of 30% by weight.

[0107] The material for forming the hard coat layer was coated on one side of a polyethylene terephthalate film having a thickness of 125 μm as the first transparent resin film, and dried at 100° C. for 3 minutes. Then use a high-pressure mercury lamp to accumulate light at 300mJ / cm 2 Under UV irradiation, a hard coat layer with a thickness of 7 μm was formed.

[0108] (Preparation of oligomer preventing layer formation material)

[0109] Prepare an oligomer layer-preventing material containing an active energy ray-curable compound (manufactured by JSR Corporation, trade name "OPSTAR-Z7540", solid content: 56% by weight, solvent: butyl acetate / methyl ethyl ketone (MEK) = 76 / 24 ...

Embodiment 2～6、 comparative example 1

[0119] In Example 1, except that the thickness of the oligomer preventive layer was changed as shown in Table 1 when forming the oligomer preventive layer, the same operation was performed as in Example 1 to obtain a hard coat film having an oligomer preventive layer. . Moreover, it carried out similarly to Example 1 using this hard-coat film, and carried out similarly to Example 1 using the hard-coat film with an adhesive layer, and obtained the transparent electroconductive laminated film.

Embodiment 7

[0121] (Preparation of oligomer preventing layer formation material)

[0122] In the oligomer preventing layer forming material prepared in Example 1, 0.1 parts by weight of an acrylic-styrene copolymer was further mixed with 100 parts by weight of the solid content of the active energy ray-curable compound of the oligomer preventing layer forming material. Cross-linked particles (manufactured by SEKISUI PLASTICS CO., Ltd., trade name "XX-160AA", average particle diameter: 0.8 μm, refractive index: 1.49). The mixture was diluted by adding methyl ethyl ketone so that the solid content concentration in the compounded product was 7% by weight, and an oligomer preventing layer-forming material was prepared.

[0123] In Example 1, except that the above-prepared oligomer preventive layer forming material was used when forming the oligomer preventive layer, and the thickness of the oligomer preventive layer was changed as shown in Table 1, it was performed in the same manner as in Ex...

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Abstract

This resin film with an adhesive layer laminates a first transparent resin film, an oligomer prevention layer, and an adhesive layer in the given order; the oligomer prevention layer is a cured layer formed by curing a composition containing a curable composition and inorganic oxide particles; the thickness of the oligomer prevention layer is at least 120 nm; the refractive index difference between the oligomer prevention layer and the adhesive layer is no greater than 0.04; and the anchoring force between the oligomer prevention layer and the adhesive agent layer is at least 1 N / 25 mm. The resin film with an adhesive layer is favorable in adhesion with the adhesive layer and is capable of suppressing the occurrence of interference bands while satisfying the scuff resistance and oligomer prevention properties that are required in an oligomer prevention layer even if the oligomer prevention layer has been made thinner.

Description

technical field [0001] The present invention relates to a resin film with an adhesive layer in which a first transparent resin film, an oligomer preventing layer, and an adhesive layer are sequentially laminated. A film in which a functional layer is further laminated on the first transparent resin film can be used as the resin film with an adhesive layer. These adhesive layer-attached resin films can be used, for example, to form a laminated film by laminating a second transparent resin film via the adhesive layer. This laminated film can be used in various applications such as optical applications. [0002] For example, when the second transparent resin film has a transparent conductive film, the laminated film can be used as a laminate of transparent conductive films. The transparent conductive film can be used as a transparent electrode in a display type such as a liquid crystal display or an electroluminescent display, an optical type, an ultrasonic type, a capacitive t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/00B32B7/02C09J7/02C09J133/00C09J201/00G02F1/1333H01B5/14C09J7/29
CPCB32B27/00C09J133/00G06F3/041C08K3/36C09J2203/318C09J2433/00C09D133/14C09J7/29Y10T428/24942C09J2301/162C09J2301/408B32B7/12G02F1/1333G06F3/0412
Inventor 高田胜则中川大五郎鹰尾宽行足立贵之仓本浩贵
Owner NITTO DENKO CORP
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