Title:
PASSIVE RADIATIVE COOLING FILM AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/114605
Kind Code:
A1
Abstract:
Disclosed is a passive radiative cooling film which has a structure able to substantially implement radiative cooling performance for a subject and as such, can be used as a packing material due to the heat sealability thereof. The present invention provides a passive radiative cooling film comprising: a first infrared radiation layer containing a polyolefin in which dielectric particles with an average diameter of 0.01 to 30 ㎛ are dispersed at a content of 0.1 to 25 weight%, and applying selective radiative cooling at an average emissivity of 0.5 to 1 for the radiation of a wavelength range of 8 to 13 ㎛ to an object to be deprived of heat; a second infrared radiation layer disposed over the first infrared radiation layer, containing a polymer substrate in which dielectric particles with an average diameter of 0.01 to 30 ㎛ are dispersed at a content of 0.1 to 25 weight%, and dissipating outside the heat resulting from the selective radiative cooling; and a solar light reflection layer disposed between the first infrared radiation layer and the second infrared radiation layer and reflecting solar light.
Inventors:
AHN JOON GYU (KR)
PARK SUN A (KR)
CHOI BYUNG DOO (KR)
LEE HYUN SUP (KR)
PARK SUN A (KR)
CHOI BYUNG DOO (KR)
LEE HYUN SUP (KR)
Application Number:
PCT/KR2021/016270
Publication Date:
June 02, 2022
Filing Date:
November 09, 2021
Export Citation:
Assignee:
LOTTE CHEMICAL CORP (KR)
International Classes:
F25B23/00; B32B7/12; B32B27/18; B32B27/32; B65D81/18; F28F13/18
Foreign References:
| US20190086164A1 | 2019-03-21 | |||
| KR102036071B1 | 2019-10-24 | |||
| KR20160147649A | 2016-12-23 | |||
| KR20190087469A | 2019-07-24 | |||
| US20070021566A1 | 2007-01-25 |
Attorney, Agent or Firm:
PARK, Sang Hoon (KR)
Download PDF: