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Reflective film laminate

一种反射膜、层叠体的技术，应用在反射器、涂层、分层产品等方向，能够解决反射膜透明化反射率下降等问题，达到抑制溶出和氧化、高反射率、维持反射率的效果

Inactive Publication Date: 2011-08-03
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when water droplets are generated, the reflective film of the vehicle lamp will be made transparent (oxidized) and the reflectance will be reduced.

Method used

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  • Reflective film laminate

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1～24

[0074] The substrate uses polycarbonate (PC) with a diameter of 50.8 mm×thickness 1 mm, and the sputtering target uses pure Al or an Al-based alloy sputtering target with a diameter of 101.6 mm×thickness 5 mm. First, evacuate to make the pressure in the sputtering chamber 1×10 -3 Below Pa. Next, Ar gas was introduced into the sputtering chamber, so that the pressure in the sputtering chamber was 2.6×10 -1 Pa, DC (direct current) power of 250 W was applied to the electrode to generate plasma, and the sputtering target was sputtered to form the first layer (Al film) on the PC substrate. The distance between the sputtering target and the PC substrate is 80mm, and the PC substrate is formed while revolving.

[0075] The formation of the second layer is that after the Al film of the first layer is formed, the sputtering chamber is not opened, and the Ar gas is introduced into the sputtering chamber so that the pressure in the sputtering chamber is 2.6×10 -1 Pa is performed by sp...

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Abstract

A reflective film laminate is provided with high productivity and at low cost in which a protective film with minimized pinholes is provided to improve the alkali resistance and warm water resistance of the reflective film laminate including a pure Al film or an Al-based alloy film so that a reflectivity reduction resulting from the elution or oxidization of the Al film in an alkaline or warm water environment is less likely to occur. The reflective film laminate of the present invention includes, over a substrate, a pure Al film or an Al-based alloy film as a first layer, and an oxide film of a metal containing one or more elements selected from the group consisting of Zr, Cr, Y, Nb, Hf, Ta, W, Ti, Si, and Mo as a second layer over the first layer. The thickness of the second layer is 0.1 to 10 nm.

Description

technical field [0001] The present invention relates to a reflective film laminate, and a vehicle lamp, lighting fixture, and optical mirror including the reflective film laminate. Background technique [0002] A pure Al film has a high reflectance (88% to 90%), so it is used as a reflective film for vehicle lamps, lighting fixtures, or decorations. The durability required for the reflective film includes acid resistance, alkali resistance, warm water resistance, heat resistance, moisture resistance, sulfide resistance, salt water resistance, and the like. However, since a pure Al film is an amphoteric metal, its corrosion resistance to acids and alkalis is low. Therefore, when a reflective film made of a pure Al film (pure Al reflective film) is used in a vehicle lamp or the like, there is a problem that the reflective film deteriorates in a short period of time and cannot maintain a high reflectance for a long period of time. [0003] As a method of maintaining the high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/08B32B9/04B32B15/00C23C14/34C23C14/14C23C14/08F21V7/22F21W101/02F21W107/10
CPCC23C14/5853C22C21/00C23C14/205G02B5/0858Y10T428/265
Inventor 桂翔生小林宣裕铃木顺佐藤俊树
Owner KOBE STEEL LTD
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