Unlock instant, AI-driven research and patent intelligence for your innovation.

Adhesive layer for optical film and method for producing same, adhesive optical film and method for producing same, image display device, and coating liquid supply device

An optical film and adhesive layer technology, applied in film/sheet adhesive, pressure-sensitive film/sheet, optics, etc., can solve the problems of a lot of time and labor, insufficient bubble removal, etc. The effect of high efficiency, prolonging life and improving removal efficiency

Active Publication Date: 2014-01-01
NITTO DENKO CORP
View PDF16 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even if vacuum defoaming treatment or centrifugation treatment is used to remove the bubbles of the adhesive coating liquid, when the viscosity of the coating liquid is high, or when the bubbles with a small bubble diameter are removed, a lot of time and money are required. laborious, and often the removal of air bubbles will be insufficient

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Adhesive layer for optical film and method for producing same, adhesive optical film and method for producing same, image display device, and coating liquid supply device
  • Adhesive layer for optical film and method for producing same, adhesive optical film and method for producing same, image display device, and coating liquid supply device
  • Adhesive layer for optical film and method for producing same, adhesive optical film and method for producing same, image display device, and coating liquid supply device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0130] In Example 1, a water-dispersed acrylic adhesive was used as the adhesive coating liquid. When preparing the water-dispersed acrylic adhesive, 55554 parts of butyl acrylate, 2776 parts of acrylic acid, 1665 parts of mono[poly(propyleneoxy) methacrylate] phosphate ( The average degree of polymerization of the propyleneoxy group is 5.0), and 5 parts of 3-methacryloxypropyl-triethoxysilane, etc. (manufactured by Shin-Etsu Chemical Co., Ltd., KBM-503) and mixed to obtain a single body mixture. Next, 1,300 parts of AQUARON HS-10 (manufactured by Daiichi Kogyo Pharmaceutical Co., Ltd.) and 38,700 parts of ion-exchanged water were added as a reactive emulsifier to 60,000 parts of the prepared monomer mixture. Co., Ltd.), and stirred at 7000 rpm for 10 minutes to prepare a monomer emulsion. Then, in the reaction container equipped with a condenser tube, a nitrogen gas introduction tube, a thermometer, a dropping funnel, and a stirring blade, 20,000 parts and 35,000 parts of i...

Embodiment 2～9）

[0137] In the same manner as in Example 1, except that the filtration accuracy, the presence or absence of a gradient of filtration accuracy, and the pressure difference were changed to those in Table 1, the above-mentioned adhesive containing a water-dispersed acrylic adhesive The coating liquid is filtered (filtering step).

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
viscosityaaaaaaaaaa
particle sizeaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

A method for producing an adhesive layer for an optical film, characterized by comprising a filtering step of filtering an adhesive coating liquid containing a water-dispersible adhesive at a differential pressure of more than 0 kPa and 150 kPa or less using a depth-type filter having a filtration accuracy of 1 to 20 µm and a coating and drying step of coating the adhesive coating liquid after being filtered, followed by drying the liquid.

Description

technical field [0001] The present invention relates to an adhesive layer for an optical film with reduced appearance defects caused by air bubbles and / or foreign substances, a method for producing the same, and an adhesive layer laminated on at least one side of an optical film to reduce the adhesive layer Adhesive optical film with appearance defect in and method for manufacturing the same. Examples of the adhesive optical film include surface treatment films such as polarizing plates, retardation films, optical compensation films, brightness enhancement films, antireflection films, etc., on which an adhesive layer is laminated at least on one side, and those laminated with them. film. Furthermore, the present invention relates to an image display device using at least one of the adhesive optical film, and a coating liquid for supplying an adhesive coating liquid as a raw material of an adhesive layer constituting the adhesive optical film Supply device. Background techn...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J201/00G02B5/30C09J7/38
CPCC09J7/02C09J201/00C09J2203/318G02B5/30C09J7/38Y10T428/2848Y10T428/28Y10T428/249983C09J7/22C09J7/30C09J9/00G02B5/3025G02B5/305C09J2301/00
Inventor 塘口直树石井孝证卷幡阳介增田友昭柳成镇诸星勉
Owner NITTO DENKO CORP