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Adhesive film and adhesive composite sheet

A technology for bonding films and composite sheets, applied in the direction of adhesive types, ester copolymer adhesives, film/sheet release liners, etc. And other issues

Pending Publication Date: 2021-05-11
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, it is difficult to increase the production scale of such colored glass plates
This is due to the fact that large glass panels tend to warp and thus easily break, making them more difficult to handle

Method used

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  • Adhesive film and adhesive composite sheet
  • Adhesive film and adhesive composite sheet
  • Adhesive film and adhesive composite sheet

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0288] "Preparation Method of Adhesive Composition"

[0289] An adhesive composition (thermosetting adhesive composition, energy ray-curable adhesive composition) can be obtained by blending each component which comprises this composition.

[0290] The order of addition of each component is not particularly limited, and two or more components may be added simultaneously.

[0291] When using a solvent, the solvent may be mixed with any blending component other than the solvent, and the blended component may be diluted beforehand, or any blending component other than the solvent may not be diluted in advance, and the solvent may be mixed with These blending ingredients are used.

[0292] When blending, the method of mixing the components is not particularly limited, and may be appropriately selected from the following known methods: a method of mixing by rotating a stirrer or a stirring blade, and a method of mixing using a mixer (mixer). , a method of mixing by applying ultra...

Embodiment 1

[0419] "Manufacture of Adhesive Film"

[0420]

[0421] Polymer component (a)-1 (9.8 parts by mass), epoxy resin (b1)-1 (25.3 parts by mass), epoxy resin (b1)-2 (22.5 parts by mass), thermosetting agent (b2)- 1 (24.6 parts by mass), curing accelerator (c)-1 (0.2 parts by mass), filler (d)-1 (14.6 parts by mass), coupling agent (e)-1 (1 part by mass) and colorant (i)-1 (2 parts by mass) was dissolved or dispersed in methyl ethyl ketone, and stirred at 23° C., whereby the total concentration of all the above-mentioned components except methyl ethyl ketone was 50 mass % adhesive composition. In addition, the compounding quantity of the components other than methyl ethyl ketone shown here is the quantity of the target product which does not contain a solvent component.

[0422]

[0423] Using a release film ("SP-PET381031" manufactured by LINTEC CORPORATION, thickness 38 μm, 1st release film) that has been released on one side of a polyethylene terephthalate (PET) film by si...

Embodiment 2～4、 comparative example 1～4

[0454] In addition to changing the type and blending amount of any or both of the blending ingredients when preparing the adhesive composition, so that the type and blending amount of the adhesive composition containing ingredients are as shown in Table 1. Except for one point, an adhesive film and an adhesive composite sheet were produced by the same method as in Example 1, and the adhesive film was evaluated. Among them, the total concentration of all components except methyl ethyl ketone in the adhesive composition was 35% by mass in Examples 2 to 4, Comparative Example 2 and Comparative Example 4, and 35% by mass in Comparative Example 1 and Comparative Example 3. Medium is 50% by mass. The results are shown in Table 1.

[0455] In addition, "-" in the column of the component contained in Table 1 means that an adhesive composition does not contain this component.

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Abstract

Provided is a curable adhesive film for bonding two plates to each other, the two plates having a linear transmittance of 70% or more with respect to light having a wavelength of 800-1400 nm, the linear transmittance of a cured product of the adhesive film with respect to light having a wavelength of 850 nm being 60% or more, the linear transmittance of the cured product with respect to light having a wavelength of 400 nm being 40% or less. The present invention provides the cured product of the adhesive film having a size of 2 mm*2 mm and a thickness of 20 [mu]m, a first glass sheet having a thickness of 900 [mu]m provided on the entire surface of one surface of the cured product, and a second glass sheet having a thickness of 350 [mu]m provided on the entire surface of the other surface of the cured product. The shear strength of a test piece is 5 MPa or more. The present invention also provides an adhesive composite sheet having a support sheet and having the adhesive film on one surface of the support sheet.

Description

technical field [0001] The present invention relates to an adhesive film and an adhesive composite sheet. [0002] This application claims priority on the basis of Japanese Patent Application No. 2019-203084 filed in Japan on November 8, 2019, and its content is incorporated herein. Background technique [0003] In electronic equipment, for example, a sensor is fixed on a substrate, and the light receiving part side thereof is protected by a cover glass. In addition, in order to prevent light in a specific wavelength range other than the target from reaching the light receiving part of the sensor, a device for suppressing transmission of light in the specific wavelength range is provided between the cover glass and the sensor. This is to allow the sensor to detect light in the target wavelength range and to prevent the sensor from malfunctioning due to light in a wavelength range other than the target. For example, when the sensor detects infrared rays, visible light may b...

Claims

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Application Information

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IPC IPC(8): C09J7/24C09J7/30C09J163/00C09J133/08C09J163/04C09J11/04C09J11/06G01D11/00
CPCC09J7/241C09J7/30C09J163/00C09J133/066C09J11/04C09J11/06G01D11/00C09J2423/006C09J2463/00C09J2433/00C08L33/20C08L63/04C08K9/04C08K7/18C08K5/5435C08L63/00C08K9/06C09J7/20C09J7/40C08L33/04C09J2301/416C09J2301/312
Inventor 梅本夏树佐藤阳辅
Owner LINTEC CORP