Infrared ray-reflective substrate

A reflective substrate and infrared technology, which is applied in optics, instruments, film/sheet adhesives, etc., can solve the problems of decreased light transmittance, poor visual recognition, and reduced visible light transmittance, and achieve low heat insulation coefficient, the effect of high visible light transmittance

Inactive Publication Date: 2020-02-18
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In such an infrared reflective substrate, it can be said that the higher the thermal insulation, the more preferable, but if the thermal insulation is increased, the transmittance of visible light will decrease, and the visibility from the inside will deteriorate.
That is, in the prior art, when the transmittance of light is lowered, the thermal insulation can also be improved, but if the transmittance is lowered in this way to improve the thermal insulation, the visible light transmittance will also decrease.

Method used

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  • Infrared ray-reflective substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0134] On one side of a polyethylene terephthalate (PET) film substrate with a thickness of 50 μm, a titanium oxide (TiO 2 ), a silver alloy containing copper (2.5%) as an impurity with a thickness of 10nm, a titanium oxide (TiO 2 ), and the first laminate is formed on the substrate. Then, a photocurable urethane acrylate resin solution is applied on the first laminate, dried, and then irradiated with ultraviolet rays to cure the resin solution to form a transparent spacer layer. The amount of the resin solution was adjusted so that the thickness of the transparent spacer layer formed by curing the resin was 100 nm. For the cured transparent spacer layer, a titanium oxide (TiO 2 ), a silver alloy containing copper (2.5wt%) as an impurity with a thickness of 10nm, a titanium oxide (TiO 2 ) was bonded to a 17-μm-thick adhesive layer made of an acrylic adhesive to form the polarizing film laminate of Example 1. The layer structure of the polarizing film laminate of Example 1 ...

Embodiment 2

[0136] The polarizing film laminate of Example 2 was laminated with the polarizing film of Example 1 only in the aspects where the thickness of the silver alloy metal layer of the first and second laminates was 12 nm and the thickness of the adhesive layer was 70 nm. different, but identical in other respects.

Embodiment 3

[0138] The polarizing film laminate of Example 3 differs from the polarizing film laminate of Example 1 only in that the silver alloy metal layers of the first and second laminates have a thickness of 12 nm, and is the same in other respects.

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Abstract

Provided is an infrared ray-reflective substrate that features both high visible light transmittance and high heat-shielding property. This infrared ray-reflective substrate is provided with a transparent base material and an infrared reflective layer, wherein the visible light absorption rate of the infrared ray-reflective substrate is at most 0.3, and the slope of the reflectivity of the infrared ray-reflective substrate between 600 nm and 700 nm is at least 0.12.

Description

technical field [0001] The present invention relates to an infrared reflective substrate having a thin film of an infrared reflective layer on a transparent substrate. Background technique [0002] Conventionally, an infrared reflective substrate having an infrared reflective layer on a substrate such as glass or a film is known. Such an infrared reflective substrate, for example, uses glass as a base material and integrates an infrared reflective layer formed on the indoor side of the window glass, or uses a film as a base material and sticks a film on the indoor side of the window glass, so that the infrared rays incident from the outside can be reduced. Reflects near-infrared rays such as sunlight to the room, and exerts a heat-insulating effect. Of course, in addition to window glass, it can also be used for other purposes such as showcases where light from the outside needs to be blocked. [0003] In such an infrared reflective substrate, it can be said that the highe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/26B32B7/023B32B17/06C09J7/20C09J201/00G02B5/28
CPCB32B7/02B32B17/06C09J7/20C09J201/00G02B5/26G02B5/282G02B5/28B32B7/023B32B17/061G02B5/208G02B5/281
Inventor 绀谷友广大森裕
Owner NITTO DENKO CORP
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