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Infrared light reflecting film

An infrared light and reflective technology, applied in optics, optical components, instruments, etc., can solve problems such as unfavorable color changes

Inactive Publication Date: 2010-11-10
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, when membranes are dyed with multiple dyes, the dyes often fade at different rates, resulting in unfavorable color changes over the lifetime of the membrane

Method used

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  • Infrared light reflecting film
  • Infrared light reflecting film
  • Infrared light reflecting film

Examples

Experimental program
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Effect test

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Abstract

An infrared light reflecting article is disclosed and includes a visible light transparent substrate including a polymer and an infrared light reflecting cholesteric liquid crystal layer disposed on the substrate. The substrate and infrared light reflecting cholesteric liquid crystal layer have a combined haze value of less than 3%.

Description

Infrared reflective film Background technique The present disclosure generally relates to infrared light reflecting films. More particularly, the present invention relates to an infrared light reflecting film including a cholesteric liquid crystal layer. Tinted plastic films and vacuum-coated plastic films have been applied to windows to reduce heat loads from sunlight. To reduce thermal loading, sunlight transmission in the visible or infrared portion of the solar spectrum (ie, the portion of the wavelength range from 400nm to 2500nm or above) may be blocked. Tinted films can control visible light transmission primarily through absorption and thus provide glare reduction. However, dyed films generally do not block near-infrared solar energy, so they are not very effective as infrared reflective films or solar control films. Stained films also often fade with exposure to sunlight. In addition, when the membrane is dyed with multiple dyes, the dyes often fade at differen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B7/02B32B27/16G02B5/08
CPCG02B5/08B32B17/10018C09K2019/0448C09K19/2007G02B5/3016G02B5/0841G02B5/3083G02B5/305
Inventor 拉古纳特·帕迪亚斯马克·D·拉德克利夫克里斯蒂娜·U·托马斯查尔斯·A·马蒂拉曼尼诗·贾殷迈克尔·F·韦伯白峰
Owner 3M INNOVATIVE PROPERTIES CO