CN-115195255-B - Laminate body

Abstract

The invention provides a laminate which has a glass plate, a1 st bonding layer, a polaroid, a 2 nd bonding layer and a thermoplastic resin film in sequence and has small variation of polarization degree even after a heat resistance test, an image display device comprising the laminate and a manufacturing method of the laminate. A laminated body in which a glass plate, a1 st lamination layer and a polarizing plate are laminated in this order, the glass plate and the polarizing plate are laminated in direct contact with the 1 st lamination layer, the thickness of the glass plate is 100 [ mu ] m or less, the thickness of the 1 st lamination layer is 10 [ mu ] m or less, the 1 st lamination layer contains a cured product of an active energy ray-curable composition or a pressure-sensitive adhesive composition, and a 2 nd lamination layer and a thermoplastic resin film are laminated in this order on the side of the polarizing plate opposite to the 1 st lamination layer.

Inventors

• TAKEUCHI TOMOYASU
• ZHAO TIANXI
• CUI YUNSHUO
• JIN XIAODONG

Assignees

• 住友化学株式会社

Dates

Publication Date

20260508

Application Date

20220407

Priority Date

20210409

Claims (4)

1. 1. A laminate of a laminate of two or more layers, wherein, A glass plate, a1 st lamination layer and a polaroid are laminated in sequence, The glass plate and the polarizing plate are laminated in direct contact with the 1 st lamination layer, The glass plate has a thickness of 10 μm or more and 100 μm or less, The thickness of the 1 st bonding layer is 1 μm or more and 10 μm or less, The 1 st adhesive layer comprises a cured product of an active energy ray-curable composition or a pressure-sensitive adhesive composition, The water content of the polarizer is 9.9 mass% or less, A2 nd lamination layer and a thermoplastic resin film are laminated in this order on the opposite side of the polarizer from the 1 st lamination layer, The amount of change in polarization degree after the heat resistance test after being left in an atmosphere of 95 ℃ for 48 hours in a heat resistance tester is 0.01 to 0.25.
2. 2. The laminate according to claim 1, wherein, The 2 nd lamination layer comprises a cured product of an aqueous adhesive composition.
3. 3. An image display device comprising the laminate according to claim 1 or 2.
4. 4. A method for producing the laminate according to claim 2, comprising: A step of applying a water-based adhesive composition to at least one of the polarizing plate and the thermoplastic resin film, A step of bonding the polarizing plate and the thermoplastic resin film via the aqueous adhesive composition, A step of curing the aqueous adhesive composition by heating to form a2 nd bonding layer containing a cured product of the aqueous adhesive composition, And a step of bonding a glass plate to the opposite side of the polarizing plate from the 2 nd bonding layer via the 1 st bonding layer.

Description

Laminate body Technical Field The present invention relates to a laminate, and further relates to a method for producing the laminate. Background The polarizing plate is used as an optical member constituting an image display device such as a liquid crystal display device. Patent document 1 proposes a polarizing plate including a polarizing plate, an adhesive layer, and a glass film. The glass film constituting the polarizing plate forms a viewing side surface on a display surface of the image display device. Prior art literature Patent literature Patent document 1 International publication No. 2013/175767 Disclosure of Invention Problems to be solved by the invention After a heat resistance test is performed on a polarizing plate including a polarizing plate, an adhesive layer, and a glass film, the degree of polarization may be significantly changed. The invention provides a laminate which has a glass plate, a 1 st bonding layer and a polaroid in order and has small variation of polarization degree after a heat resistance test, an image display device comprising the laminate and a manufacturing method of the laminate. Means for solving the problems The invention provides a laminate, an image display device and a method for manufacturing the laminate. [1] A laminated body in which a glass plate, a1 st lamination layer and a polarizing plate are laminated in this order, The thickness of the glass plate is 100 μm or less, The thickness of the 1 st bonding layer is 10 μm or less, The 1 st adhesive layer contains a cured product of an active energy ray-curable composition or a pressure-sensitive adhesive composition. [2] The laminate according to [1], wherein a 2 nd lamination layer and a thermoplastic resin film are laminated in this order on the opposite side of the polarizer from the 1 st lamination layer. [3] The laminate according to [2], wherein the 2 nd lamination layer comprises a cured product of an aqueous adhesive composition. [4] An image display device comprising the laminate of any one of [1] to [3 ]. [5] A method for producing a laminate according to [3], which comprises a step of applying a water-based adhesive composition to at least one of a polarizing plate and a thermoplastic resin film, A step of bonding the polarizing plate and the thermoplastic resin film via the aqueous adhesive composition, A step of curing the aqueous adhesive composition by heating to form a2 nd bonding layer containing a cured product of the aqueous adhesive composition, And bonding a glass plate to the opposite side of the polarizing plate from the 2 nd bonding layer via the 1 st bonding layer. [6] A laminated body in which a glass plate, a1 st lamination layer and a polarizing plate are laminated in this order, The glass plate and the polarizing plate are laminated in direct contact with the 1 st lamination layer, The thickness of the glass plate is 100 μm or less, The thickness of the 1 st bonding layer is 10 μm or less, The 1 st adhesive layer contains a cured product of an active energy ray-curable composition or a pressure-sensitive adhesive composition, A2 nd lamination layer and a thermoplastic resin film are laminated in this order on the opposite side of the polarizer from the 1 st lamination layer. Effects of the invention According to the present invention, a laminate having a glass plate, a1 st lamination layer, and a polarizing plate in this order, in which a decrease in polarization degree after a heat resistance test is suppressed, an image display device including the laminate, and a method of manufacturing the laminate can be provided. Drawings Fig. 1 is a schematic plan view showing a laminate according to an embodiment of the present invention. Fig. 2 is a schematic plan view showing a laminate according to another embodiment of the present invention. Fig. 3 is a schematic plan view showing a laminate according to still another embodiment of the present invention. Fig. 4 is a schematic cross-sectional view showing an image display device of the present invention. Description of the reference numerals 1 Glass plate, 2 st lamination layer, 3 polarizing plate, 4 nd lamination layer, 5 thermoplastic resin film, 6 surface protective film (protective film), 7 adhesive layer, 8 image display element, 10, 20, 30 lamination body, 40 image display device Detailed Description Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments. In all the drawings below, the proportions of the components shown in the drawings are not necessarily the same as the actual proportions of the components, and the proportions are appropriately adjusted to facilitate understanding of the components. < Laminate > In the laminate of the present invention, a glass plate, a1 st lamination layer and a polarizing plate are laminated in this order, the thickness of the glass plate is 100 [ mu ] m or less, the thickness of t