US Patent No. 10,987,895

ROOF MEMBER OR CEILING MEMBER, AND CONSTRUCTION


Patent No. 10,987,895
Issue Date April 27, 2021
Title Roof Member Or Ceiling Member, And Construction
Inventorship Tomoo Hirota, Chiba (JP)
Hirokazu Matsui, Chiba (JP)
Assignee SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo (JP)

Claim of US Patent No. 10,987,895

1. A member for roofing or ceiling, comprising:an outdoor-side heat insulating layer (A);
an indoor-side heat insulating layer (B); and
a heat storage layer between the outdoor-side heat insulating layer (A) and the indoor-side heat insulating layer (B), wherein
R?0.10 where R is represented by Equation (3):
R=2(R1?0.5)2+(R2?1)2+(R3?0.55)2  (3),
where R1 is represented by Equation (1):
R1=(Tb/Kb)/(Ta/Ka+Tb/Kb)  (1),where Ka is a thermal conductivity of the outdoor-side heat insulating layer (A), Ta is a thickness of the outdoor-side heat insulating layer (A), Kb is a thermal conductivity of the indoor-side heat insulating layer (B), and Tb is a thickness of the indoor-side heat insulating layer (B),R2 is a ratio of a latent heat amount of the heat storage layer in a temperature range of 15° C. to 50° C. with respect to a latent heat amount of the heat storage layer in a temperature range of ?10° C. to 60° C., and
R3 is represented by Equation (2):
R3=L5/L20  (2),where L5 is a latent heat amount of the heat storage layer in a temperature range X, and L20 is a latent heat amount of the heat storage layer in a temperature range of (X??10)° C. inclusive to (X?+10)° C. inclusive,X is a 5° C.-width temperature range in which the latent heat amount of the heat storage layer is the largest among latent heat amounts of given 5° C.-width temperature ranges within the temperature range of ?10° C. to 60° C., andX? is a center temperature of the temperature range X.