Title:
FLEXIBLE LIGHTING CONTROL SHEET
Document Type and Number:
Japanese Patent JP2018001699
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a lighting control sheet in which light transmittance of a sheet is temperature-controlled, in particular, when a surface temperature of the sheet reaches a high temperature during the daytime, the light transmittance of a sheet body is attenuated in a step wise manner to develop a shading curtain effect to suppress a temperature of the inside lower by several degrees, and in the evening, due to the step wise increase of the light transmittance, indoor lighting can be secured and that has excellent weather resistance.SOLUTION: A light transmitting laminate body includes a surface protective layer and a back surface resin layer, and a temperature-sensitive discoloring resin layer therebetween, at least the surface protective layer is semi-transmissive and UV-blocking, 1) a resin layer containing whitish fine particles and a UV-absorbing agent, or 2) a layer containing a UV-absorbing agent in an incompatible resin blend, and the temperature sensitive discoloring resin layer is formed by two layers or three layers, each layer contains coloring/discoloring reversible microcapsules having a difference of 5°C or larger in a complete chromatic point, and depending on the coloring/discoloring of these temperature-sensitive discoloring resin layers, a total light transmittance of the light transmissive laminate body is decreased/increased in a step wise manner to obtain a light controlling effect.SELECTED DRAWING: Figure 1
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Inventors:
KARINO TOSHIYA
Application Number:
JP2016134928A
Publication Date:
January 11, 2018
Filing Date:
July 07, 2016
Export Citation:
Assignee:
HIRAOKA & CO LTD
International Classes:
B32B27/18; B32B7/02; C09D5/00; C09D5/32; C09D7/40; C09D201/00; G02F1/17