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Pressure-sensitive adhesive layer-attached transparent resin film, laminated film, and touch panel

A transparent resin and adhesive layer technology, which is applied in the direction of synthetic resin layered products, adhesive types, ester copolymer adhesives, etc., can solve problems such as whitening of transparent conductive laminated films, poor screen recognition, and precipitation , to achieve excellent oligomer prevention, good anchoring force, and excellent humidification adhesion

Inactive Publication Date: 2012-10-17
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 in a transparent conductive laminated film, there are low molecular components (oligomers) contained in the transparent film substrate. ) precipitation due to heating, and the problem of whitening of the transparent conductive laminated film
As a result, the above-mentioned transparent conductive laminate has the problem of poor visibility of the screen.

Method used

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  • Pressure-sensitive adhesive layer-attached transparent resin film, laminated film, and touch panel
  • Pressure-sensitive adhesive layer-attached transparent resin film, laminated film, and touch panel
  • Pressure-sensitive adhesive layer-attached transparent resin film, laminated film, and touch panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] (Preparation of Oligomer Preventive Layer Formation Material)

[0104] A solution obtained by diluting silica sol (COLCOAT P manufactured by COLCOAT CO., Ltd.) with ethanol to a solid content concentration of 2% was used.

[0105] (Oligomer prevents layer formation)

[0106] On one side of a polyethylene terephthalate film (hereinafter referred to as PET film 1) with a thickness of 125 μm as the first transparent resin film, the above-mentioned oligomer preventing layer forming material was coated by a silicon coating method, and Thereafter, it was heated at 150° C. for 2 minutes, dried and cured to form a 20 nm-thick oligomer preventing layer, thereby obtaining a PET film 1 having an oligomer preventing layer.

[0107] (Production of PET film with adhesive layer 1)

[0108] An adhesive layer was formed on the oligomer preventing layer of the above-mentioned PET film 1 having an oligomer preventing layer to obtain a hard coat film with an adhesive layer. The above-me...

Embodiment 2～3、 comparative example 1、2

[0114] In Example 1, when the oligomer prevention layer was formed, the thickness of the oligomer prevention layer was changed as shown in Table 1, except that, the same operation as in Example 1 was performed to obtain the PET film 1 with the oligomer prevention layer. . Moreover, it carried out similarly to Example 1, and obtained the PET film 1 with an adhesive layer, and also carried out similarly to Example 1, and obtained the transparent electroconductive laminated film.

[0115] The following evaluations were performed on the PET film 1 having an oligomer preventing layer and the transparent conductive laminated film obtained in Examples and Comparative Examples. The results are shown in Table 1.

[0116]

[0117] A 50 mm×50 mm PET film 1 having an oligomer preventing layer was cut out and used as a sample. The PET film 1 side of this sample was bonded to a glass plate with a thickness of 5 mm through an adhesive layer having a thickness of 5 μm formed by the adhesi...

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Abstract

A pressure-sensitive adhesive layer-attached transparent resin film of the invention includes a first transparent resin film, an oligomer blocking layer, and a pressure-sensitive adhesive layer, which are laminated in this order, wherein the oligomer blocking layer is made of a curing product of alkoxysilane and / or a partial condensate thereof, and the oligomer blocking layer has a thickness of 5 nm to 35 nm. The pressure-sensitive adhesive layer-attached transparent resin film can has satisfactory oligomer-blocking properties as desired, and provides good adhesion of the oligomer blocking layer.

Description

technical field [0001] The present invention relates to an adhesive layer-attached transparent resin film in which a first transparent resin film, an oligomer preventing layer, and an adhesive layer are sequentially laminated. The adhesive layer-attached transparent resin film is 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. Transparent conductive films are used as transparent electrodes in display systems such as liquid crystal displays and electroluminescent displays, optical systems, ultrasonic systems, capacitance systems, and resistive film systems, and other touch panels. In addition, transparent conductive films are also used for static preventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J133/00B32B7/12B32B27/06B32B27/36G06F3/041H01B5/14
CPCC09J133/08G06F3/041C09J7/0246C09J2483/001G06F3/044C09J2203/318C09D183/04C09J7/0285G06F3/045C09J2433/00B32B7/12B32B27/08B32B27/36B32B2307/412B32B2405/00B32B2457/20C09J7/255Y10T428/2848Y10T428/31663G02F1/13338C08J7/044
Inventor 小泽博纪鹰尾宽行菅原英男
Owner NITTO DENKO CORP
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