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an adhesive film

A technology for bonding films and films, applied in the direction of film/sheet-shaped adhesives, adhesives, etc.

Active Publication Date: 2022-01-25
TORAY ADVANCED MATERIALS RES LAB CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, there is no foreign matter that may affect subsequent projects when being laser cut

Method used

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  • an adhesive film

Examples

Experimental program
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Effect test

Embodiment 1

[0092] Adhesive I (solid content 30%) was coated on one surface of base film A (thickness 75 μm) with a comma roll coater, with a wet thickness of about 67 μm. After drying at 120°C for 1 minute and 30 seconds, the obtained adhesive layer has a dry thickness of 20 μm. The adhesive film was compounded with a release film, and aged in an oven at 50° C. for 48 hours to prepare a sample. Various tests were performed after the release film was peeled off.

Embodiment 2

[0094] Adhesive I (solid content 30%) was coated on one surface of base film B (thickness 75 μm) with a comma roll coater, with a wet thickness of about 67 μm. After drying at 120°C for 1 minute and 30 seconds, the obtained adhesive layer has a dry thickness of 20 μm. The adhesive film was compounded with a release film, and aged in an oven at 50° C. for 48 hours to prepare a sample. Various tests were performed after the release film was peeled off.

Embodiment 3

[0096] Adhesive II (solid content 30%) was coated on one surface of base film A (thickness 75 μm) with a comma roll coater to a wet thickness of about 67 μm. After drying at 120°C for 1 minute and 30 seconds, the obtained adhesive layer has a dry thickness of 20 μm. The adhesive film was compounded with a release film, and aged in an oven at 50° C. for 48 hours to prepare a sample. Various tests were performed after the release film was peeled off.

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Abstract

The invention provides an adhesive film for an organic electroluminescence display element or an organic electroluminescence lighting element, comprising one or more base films and one or more adhesive layers, the base film is a poly Ethylene terephthalate film; in the wavelength range of 304nm to 312nm, the absorbance of the adhesive film is in the range of 1.5% to 5.0%; the adhesive film is temporarily bonded to the organic electrical The side of the light-emitting surface of a luminescent display element or an organic electroluminescent lighting element. When the adhesive film is bonded to the organic EL substrate, it should have good adhesion, air bubble exclusion and reworkability. In addition, there is no foreign matter that may affect subsequent projects when being laser cut.

Description

technical field [0001] The invention relates to a surface protection film used in the manufacturing process of an organic electroluminescent lighting element or an organic electroluminescent display element (hereinafter collectively referred to as organic EL element). Background technique [0002] In the manufacturing process of organic EL components, the glass substrate, organic EL light-emitting layer, and sealing layer materials are first combined to form an organic EL substrate, and then cut into required sizes. Because the laser will cause thermal ablation on the surface of the object to be cut, a protective adhesive film that protects the organic EL substrate during cutting, especially laser cutting, is required in the manufacturing process of organic EL elements. The adhesive film should have good weak adhesion, air bubble exclusion, and re-adhesion when it is bonded to the organic EL substrate. In addition, there is no foreign matter that affects the subsequent engi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/25
CPCC09J2467/006C09J2301/122C09J2301/312
Inventor 赵天心张磊贯井启介桂宗彦长田俊一
Owner TORAY ADVANCED MATERIALS RES LAB CHINA
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